首页 > 最新文献

EcoMat最新文献

英文 中文
From Pb-based MAPbI3−xClx to Pb-free FASnI3−xClx and CsSbCl4 derivatives fabrication in atmospheric conditions for optoelectronic and solar cell applications 在大气条件下从铅基 MAPbI3-xClx 到无铅 FASnI3-xClx 和 CsSbCl4 衍生物的制造,用于光电和太阳能电池应用
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-10-07 DOI: 10.1002/eom2.12489
M. Kamruzzaman, Md. Faruk Hossain, J. Antonio Zapien, A. M. M. Tanveer Karim, H. N. Das, M. A. Helal

MAPbI3 is the most attractive perovskite, but toxicity and instability issues hinder its commercial applications. Stability can be improved by halide mixing; however, Pb-free perovskites are designed to alleviate the toxicity and to enable green photovoltaics (PVs). To this end, MAPbI3-xClx, FASnI3-xClx and CsSbCl4 films are deposited by spay pyrolysis technique in atmospheric conditions. SEM images demonstrated that through this process, high quality film fabrication is possible. Color of the precursor solutions changes with stirring time. High crystallinity and existence of mixed-phases are confirmed by XRD analysis. Compositions greatly impact the morphology and optical properties. Value of α is larger than 105 cm−1 for all films. Band gaps of FASnI3-xClx and CsSbCl4 are 1.46 eV and 1.52 eV, which are more suitable for PVs, optoelectronic applications than MAPbI3-xClx (Eg = 1.59 eV). The efficiency was obtained as 16.34%, 9.90%, and 13.08% for deposited MAPbI3-xClx, FASnI3-xClx, and CsSbCl4 films. The lower efficiency can further be enhanced by optimizing parameters, and in this study it was found as 20.78%, 11.93%, and 18.02%. Theoretical calculations show the films can easily produce O2 by a strong oxidation process. Thus, the favorable characteristics of FASnI3-xClx and CsSbCl4 make alternative Pb-free perovskites for PV, electronic, and optoelectronic applications.

MAPbI3 是最具吸引力的过氧化物,但毒性和不稳定性问题阻碍了它的商业应用。稳定性可以通过卤化物混合来改善;然而,无铅过氧化物的设计是为了减轻毒性并实现绿色光伏(PV)。为此,MAPbI3-xClx、FASnI3-xClx 和 CsSbCl4 薄膜在大气条件下通过溅射热解技术沉积而成。扫描电子显微镜图像表明,通过这种工艺可以制造出高质量的薄膜。前驱体溶液的颜色随搅拌时间而变化。XRD 分析证实了高结晶度和混合相的存在。成分对形态和光学特性有很大影响。所有薄膜的 α 值都大于 105 cm-1。FASnI3-xClx 和 CsSbCl4 的带隙分别为 1.46 eV 和 1.52 eV,与 MAPbI3-xClx 相比(Eg = 1.59 eV),更适合光伏和光电应用。沉积的 MAPbI3-xClx、FASnI3-xClx 和 CsSbCl4 薄膜的效率分别为 16.34%、9.90% 和 13.08%。通过优化参数可以进一步提高较低的效率,本研究发现其效率分别为 20.78%、11.93% 和 18.02%。理论计算表明,薄膜很容易通过强氧化过程产生 O2。因此,FASnI3-xClx 和 CsSbCl4 的有利特性使其成为光伏、电子和光电应用领域的无铅过氧化物替代品。
{"title":"From Pb-based MAPbI3−xClx to Pb-free FASnI3−xClx and CsSbCl4 derivatives fabrication in atmospheric conditions for optoelectronic and solar cell applications","authors":"M. Kamruzzaman,&nbsp;Md. Faruk Hossain,&nbsp;J. Antonio Zapien,&nbsp;A. M. M. Tanveer Karim,&nbsp;H. N. Das,&nbsp;M. A. Helal","doi":"10.1002/eom2.12489","DOIUrl":"https://doi.org/10.1002/eom2.12489","url":null,"abstract":"<p>MAPbI<sub>3</sub> is the most attractive perovskite, but toxicity and instability issues hinder its commercial applications. Stability can be improved by halide mixing; however, Pb-free perovskites are designed to alleviate the toxicity and to enable green photovoltaics (PVs). To this end, MAPbI<sub>3-x</sub>Cl<sub>x</sub>, FASnI<sub>3-x</sub>Cl<sub>x</sub> and CsSbCl<sub>4</sub> films are deposited by spay pyrolysis technique in atmospheric conditions. SEM images demonstrated that through this process, high quality film fabrication is possible. Color of the precursor solutions changes with stirring time. High crystallinity and existence of mixed-phases are confirmed by XRD analysis. Compositions greatly impact the morphology and optical properties. Value of α is larger than 10<sup>5</sup> cm<sup>−1</sup> for all films. Band gaps of FASnI<sub>3-x</sub>Cl<sub>x</sub> and CsSbCl<sub>4</sub> are 1.46 eV and 1.52 eV, which are more suitable for PVs, optoelectronic applications than MAPbI<sub>3-x</sub>Cl<sub>x</sub> (E<sub>g</sub> = 1.59 eV). The efficiency was obtained as 16.34%, 9.90%, and 13.08% for deposited MAPbI<sub>3-x</sub>Cl<sub>x</sub>, FASnI<sub>3-x</sub>Cl<sub>x</sub>, and CsSbCl<sub>4</sub> films. The lower efficiency can further be enhanced by optimizing parameters, and in this study it was found as 20.78%, 11.93%, and 18.02%. Theoretical calculations show the films can easily produce O<sub>2</sub> by a strong oxidation process. Thus, the favorable characteristics of FASnI<sub>3-x</sub>Cl<sub>x</sub> and CsSbCl<sub>4</sub> make alternative Pb-free perovskites for PV, electronic, and optoelectronic applications.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 10","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12489","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Minimizing perovskite solar cells' lead leakage with a cost-effective and 160 days stable encapsulant 用一种成本效益高、160 天稳定的封装剂最大限度地减少过氧化物太阳能电池的铅泄漏
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-10-06 DOI: 10.1002/eom2.12490
Haoxuan Liu, Can Li, Zongxu Zhang, Yating Shi, Fei Zhang

Perovskite solar cells' (PSCs) potential lead leakage seriously threatens ecosystems and human health, significantly hindering their commercialization. In this paper, we develope a cost-effective (less than 2$/m2) and long-term stable SSP film by mixing sulfonated SiO2 with polyvinyl alcohol (PVA). Combined with polydimethylsiloxane (PDMS) forming the encapsulation layer, it can effectively prevent over 99% of lead leakage under simulated adverse weather conditions with different structures of devices (p-i-n and n-i-p) and modules. Even after 160 days of air storage, the film maintains excellent lead sequestration efficiency. Additionally, it has no negative impact on the performance and stability. This work offers a practical and economical strategy to mitigate the toxicity of perovskite photovoltaic devices, thereby promoting their commercialization.

过氧化物太阳能电池(PSCs)潜在的铅泄漏严重威胁生态系统和人类健康,极大地阻碍了其商业化进程。在本文中,我们通过将磺化二氧化硅与聚乙烯醇(PVA)混合,开发出一种具有成本效益(低于 2 美元/平方米)且长期稳定的 SSP 薄膜。在不同结构的器件(p-i-n 和 n-i-p)和模块的模拟恶劣气候条件下,结合聚二甲基硅氧烷(PDMS)形成的封装层可有效防止 99% 以上的铅泄漏。即使在空气中存放 160 天后,薄膜仍能保持出色的铅隔离效率。此外,它对性能和稳定性也没有负面影响。这项工作为减轻过氧化物光伏器件的毒性提供了一种实用而经济的策略,从而促进了其商业化。
{"title":"Minimizing perovskite solar cells' lead leakage with a cost-effective and 160 days stable encapsulant","authors":"Haoxuan Liu,&nbsp;Can Li,&nbsp;Zongxu Zhang,&nbsp;Yating Shi,&nbsp;Fei Zhang","doi":"10.1002/eom2.12490","DOIUrl":"https://doi.org/10.1002/eom2.12490","url":null,"abstract":"<p>Perovskite solar cells' (PSCs) potential lead leakage seriously threatens ecosystems and human health, significantly hindering their commercialization. In this paper, we develope a cost-effective (less than 2$/m<sup>2</sup>) and long-term stable SSP film by mixing sulfonated SiO<sub>2</sub> with polyvinyl alcohol (PVA). Combined with polydimethylsiloxane (PDMS) forming the encapsulation layer, it can effectively prevent over 99% of lead leakage under simulated adverse weather conditions with different structures of devices (p-i-n and n-i-p) and modules. Even after 160 days of air storage, the film maintains excellent lead sequestration efficiency. Additionally, it has no negative impact on the performance and stability. This work offers a practical and economical strategy to mitigate the toxicity of perovskite photovoltaic devices, thereby promoting their commercialization.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 11","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12490","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient and spectrally stable pure blue light-emitting diodes enabled by phosphonate passivated CsPbBr3 nanoplatelets with conjugated polyelectrolyte-based energy transfer layer 具有共轭聚电解质能量转移层的膦酸盐钝化 CsPbBr3 纳米微晶实现高效、光谱稳定的纯蓝光发光二极管
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-09-29 DOI: 10.1002/eom2.12487
Jinu Park, Hyunjin Cho, Joonyun Kim, Yu-Ching Huang, Nakyung Kim, Seoyeon Park, Yunna Kim, Sukki Lee, Jiyoung Kwon, Doh C. Lee, Byungha Shin

Lead halide perovskites exhibit a very wide color gamut due to their extremely narrow emission spectra, typically characterized by a full-width at half-maximum (FWHM) of less than 20 nm. Significant advancements have been made in developing highly efficient and stable green, red, and near-infrared perovskite light-emitting diodes (PeLEDs). However, achieving efficient and stable pure blue-emitting PeLEDs remains a significant challenge. In this work, we successfully synthesized monoanionic octyl-phosphonate capped CsPbBr3 nanoplatelets (OPA-NPLs) using a combination of octyl-phosphonic acid and oleylamine at room temperature, diverging from common approaches that necessitate complex high-temperature methods, such as hot injection, to accommodate short-chain ligands. The OPA-NPLs exhibit pure blue photoluminescence at 462 nm with a FWHM of 14 nm. Compared with CsPbBr3 nanoplatelets synthesized using oleic acid, OPA-NPLs demonstrate significantly improved thermal stability and higher photoluminescence quantum yield (PLQY) of 90%. Additionally, we introduced Poly[(9,9-bis(3′-((N,N-dimethyl)-N-ethylammonium)-propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)]dibromide (PFN-Br), a conjugated polyelectrolyte material, as a hole transport layer. This facilitated energy transfer between PFN-Br and the CsPbBr3 nanoplatelets. The resulting device demonstrated an electroluminescence peak at 462 nm, an extremely narrow FWHM of 14 nm, and a maximum external quantum efficiency (EQE) of 4%. Notably, the device maintained pure blue emission without spectral peak shift even during degradation caused by excess joule heating.

卤化铅包晶石具有极窄的发射光谱,典型特征是半最大值全宽(FWHM)小于 20 纳米,因而具有非常宽的色域。在开发高效稳定的绿色、红色和近红外过氧化物发光二极管(PeLED)方面取得了重大进展。然而,实现高效稳定的纯蓝色发光 PeLED 仍然是一项重大挑战。在这项工作中,我们采用辛基膦酸和油胺的组合,在室温下成功合成了单阴离子辛基膦酸封端的 CsPbBr3 纳米片(OPA-NPLs),这有别于为适应短链配体而必须采用热注入等复杂高温方法的常见方法。OPA-NPL 在 462 纳米波长处显示出纯正的蓝色光致发光,FWHM 为 14 纳米。与使用油酸合成的 CsPbBr3 纳米颗粒相比,OPA-NPLs 的热稳定性显著提高,光致发光量子产率(PLQY)高达 90%。此外,我们还引入了共轭聚电解质材料聚[(9,9-双(3′-((N,N-二甲基)-N-乙基铵)-丙基)-2,7-芴)-盐-2,7-(9,9-二辛基芴)]二溴化物(PFN-Br)作为空穴传输层。这促进了 PFN-Br 和 CsPbBr3 纳米片之间的能量转移。由此产生的器件在 462 纳米波长处显示出电致发光峰值,极窄的 FWHM 为 14 纳米波长,最大外部量子效率 (EQE) 为 4%。值得注意的是,即使在过量焦耳热引起的降解过程中,该器件也能保持纯蓝色发射,而不会出现光谱峰值偏移。
{"title":"Efficient and spectrally stable pure blue light-emitting diodes enabled by phosphonate passivated CsPbBr3 nanoplatelets with conjugated polyelectrolyte-based energy transfer layer","authors":"Jinu Park,&nbsp;Hyunjin Cho,&nbsp;Joonyun Kim,&nbsp;Yu-Ching Huang,&nbsp;Nakyung Kim,&nbsp;Seoyeon Park,&nbsp;Yunna Kim,&nbsp;Sukki Lee,&nbsp;Jiyoung Kwon,&nbsp;Doh C. Lee,&nbsp;Byungha Shin","doi":"10.1002/eom2.12487","DOIUrl":"https://doi.org/10.1002/eom2.12487","url":null,"abstract":"<p>Lead halide perovskites exhibit a very wide color gamut due to their extremely narrow emission spectra, typically characterized by a full-width at half-maximum (FWHM) of less than 20 nm. Significant advancements have been made in developing highly efficient and stable green, red, and near-infrared perovskite light-emitting diodes (PeLEDs). However, achieving efficient and stable pure blue-emitting PeLEDs remains a significant challenge. In this work, we successfully synthesized monoanionic octyl-phosphonate capped CsPbBr<sub>3</sub> nanoplatelets (OPA-NPLs) using a combination of octyl-phosphonic acid and oleylamine at room temperature, diverging from common approaches that necessitate complex high-temperature methods, such as hot injection, to accommodate short-chain ligands. The OPA-NPLs exhibit pure blue photoluminescence at 462 nm with a FWHM of 14 nm. Compared with CsPbBr<sub>3</sub> nanoplatelets synthesized using oleic acid, OPA-NPLs demonstrate significantly improved thermal stability and higher photoluminescence quantum yield (PLQY) of 90%. Additionally, we introduced Poly[(9,9-bis(3′-((<i>N,N</i>-dimethyl)-<i>N</i>-ethylammonium)-propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)]dibromide (PFN-Br), a conjugated polyelectrolyte material, as a hole transport layer. This facilitated energy transfer between PFN-Br and the CsPbBr<sub>3</sub> nanoplatelets. The resulting device demonstrated an electroluminescence peak at 462 nm, an extremely narrow FWHM of 14 nm, and a maximum external quantum efficiency (EQE) of 4%. Notably, the device maintained pure blue emission without spectral peak shift even during degradation caused by excess joule heating.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 10","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12487","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recommended practice for measurement and evaluation of oxygen evolution reaction electrocatalysis 测量和评估氧进化反应电催化的推荐做法
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-09-17 DOI: 10.1002/eom2.12486
Hongmin An, Wonchul Park, Heejong Shin, Dong Young Chung

The Oxygen evolution reaction (OER) is a pivotal technology driving next-generation sustainable energy conversion and storage devices. Establishing a robust analytical methodology is paramount to fostering innovation in this field. This review offers a comprehensive discussion on measurement and interpretation, advocating for standardized protocols and best practices to mitigate the myriad factors that complicate analysis. The initial focus is directed toward substrate electrodes and gas bubbles, both significant contributors to reduced reliability and reproducibility. Subsequently, the review focuses on intrinsic activity assessment, identification of electrochemical active sites, and the disentanglement of competing process contributions. These careful methodologies ensure the systematic delivery of insights crucial for assessing OER performance. In conclusion, the review highlights the critical role played by precise measurement techniques and unbiased activity comparison methodologies in propelling advancements in OER catalyst development.

氧进化反应(OER)是推动下一代可持续能源转换和储存设备的关键技术。建立健全的分析方法对于促进该领域的创新至关重要。本综述对测量和解释进行了全面讨论,提倡采用标准化协议和最佳实践,以减少导致分析复杂化的各种因素。最初的重点是基底电极和气泡,它们都是降低可靠性和可重复性的重要因素。随后,评述将重点放在内在活性评估、电化学活性位点的识别以及竞争过程贡献的分离上。这些细致的方法可确保系统性地提供对评估开放式辐射计性能至关重要的见解。总之,综述强调了精确测量技术和无偏见的活性比较方法在推动 OER 催化剂开发方面所发挥的关键作用。
{"title":"Recommended practice for measurement and evaluation of oxygen evolution reaction electrocatalysis","authors":"Hongmin An,&nbsp;Wonchul Park,&nbsp;Heejong Shin,&nbsp;Dong Young Chung","doi":"10.1002/eom2.12486","DOIUrl":"10.1002/eom2.12486","url":null,"abstract":"<p>The Oxygen evolution reaction (OER) is a pivotal technology driving next-generation sustainable energy conversion and storage devices. Establishing a robust analytical methodology is paramount to fostering innovation in this field. This review offers a comprehensive discussion on measurement and interpretation, advocating for standardized protocols and best practices to mitigate the myriad factors that complicate analysis. The initial focus is directed toward substrate electrodes and gas bubbles, both significant contributors to reduced reliability and reproducibility. Subsequently, the review focuses on intrinsic activity assessment, identification of electrochemical active sites, and the disentanglement of competing process contributions. These careful methodologies ensure the systematic delivery of insights crucial for assessing OER performance. In conclusion, the review highlights the critical role played by precise measurement techniques and unbiased activity comparison methodologies in propelling advancements in OER catalyst development.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 10","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lanthanides in the water electrolysis 电解水中的镧系元素
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-09-12 DOI: 10.1002/eom2.12484
Ashish Gaur, Jatin Sharma, Enkhtuvshin Enkhbayar, Min Su Cho, Jeong Ho Ryu, HyukSu Han

The most feasible technique for producing green hydrogen is water electrolysis. In recent years, there has been significant study conducted on the use of transition metal compounds as electrocatalysts for both anodes and cathodes. Peoples have attempted several strategies to improve the electrocatalytic activity of their original structure. One such technique involves introducing rare earth metals or creating heterostructures with compounds based on rare earth metals. The incorporation of rare earth metals significantly enhances the activity by many folds, while their compounds offer structural stability and the ability to manipulate the electronic properties of the original system. These factors have led to a recent boom in investigations on rare earth metal-based electrocatalysts. There is currently a pressing demand for a review article that can provide a comprehensive overview of the scientific advancements and elucidate the mechanistic aspects of the impact of lanthanide doping. This review begins by explaining the electronic structure of the lanthanides. We next examine the mechanistic aspects, followed by recent advancements in lanthanide doping and heterostructure formation for water electrolysis applications. It is expected that this particular effort will benefit a broad audience and stimulate more research in this area of interest.

生产绿色氢气最可行的技术是水电解法。近年来,人们对使用过渡金属化合物作为阳极和阴极的电催化剂进行了大量研究。人们尝试了多种策略来提高其原始结构的电催化活性。其中一种方法是引入稀土金属或与稀土金属化合物形成异质结构。稀土金属的加入使活性显著提高了许多倍,而其化合物则提供了结构稳定性和操纵原始系统电子特性的能力。这些因素导致了最近对稀土金属电催化剂的研究热潮。目前,人们迫切希望能有一篇综述性文章,对科学进展进行全面概述,并阐明镧系元素掺杂的机理影响。本综述首先解释镧系元素的电子结构。接下来,我们将探讨机理方面的问题,然后介绍镧系元素掺杂和异质结构形成在水电解应用中的最新进展。我们希望这一特别的研究工作能使广大读者受益,并激励人们在这一感兴趣的领域开展更多的研究。
{"title":"Lanthanides in the water electrolysis","authors":"Ashish Gaur,&nbsp;Jatin Sharma,&nbsp;Enkhtuvshin Enkhbayar,&nbsp;Min Su Cho,&nbsp;Jeong Ho Ryu,&nbsp;HyukSu Han","doi":"10.1002/eom2.12484","DOIUrl":"https://doi.org/10.1002/eom2.12484","url":null,"abstract":"<p>The most feasible technique for producing green hydrogen is water electrolysis. In recent years, there has been significant study conducted on the use of transition metal compounds as electrocatalysts for both anodes and cathodes. Peoples have attempted several strategies to improve the electrocatalytic activity of their original structure. One such technique involves introducing rare earth metals or creating heterostructures with compounds based on rare earth metals. The incorporation of rare earth metals significantly enhances the activity by many folds, while their compounds offer structural stability and the ability to manipulate the electronic properties of the original system. These factors have led to a recent boom in investigations on rare earth metal-based electrocatalysts. There is currently a pressing demand for a review article that can provide a comprehensive overview of the scientific advancements and elucidate the mechanistic aspects of the impact of lanthanide doping. This review begins by explaining the electronic structure of the lanthanides. We next examine the mechanistic aspects, followed by recent advancements in lanthanide doping and heterostructure formation for water electrolysis applications. It is expected that this particular effort will benefit a broad audience and stimulate more research in this area of interest.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 9","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12484","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142244615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Double transition metal MXenes for enhanced electrochemical applications: Challenges and opportunities 用于增强电化学应用的双过渡金属 MXenes:挑战与机遇
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-09-09 DOI: 10.1002/eom2.12485
Faiza Bibi, Abdul Hanan, Irfan Ali Soomro, Arshid Numan, Mohammad Khalid

Double transition metal (DTM) MXenes are a recently discovered class of two-dimensional composite nanomaterials with excellent potential in energy storage applications. Since their emergence in 2015, DTM MXenes have expanded their composition boundary beyond traditional single-metal carbide and nitride MXenes. DTM MXenes offer tunable structures and properties through variations in the constituent transition metals and positioning within the layered lattice. These MXenes can exist in two primary forms: ordered DTMs and solid solutions. The compositional versatility of DTM MXenes offers opportunities to enhance their performance in electrochemical energy storage applications. However, the quality, stability, and surface chemistry of DTM MXenes are influenced by several factors, including the etching process, etchant type, and synthesis route. Currently, limited literature is available on experimentally synthesized DTM MXenes, with most studies focusing on carbide-based MXenes. Most of the articles have dedicated their efforts only to generalized synthesis strategies. Although extensive theoretical studies have explored the suitability of etchants, synthesis parameters, and methods for producing high-quality MXene with selective terminal functional groups, their stability issues have not been thoroughly examined. This review addresses various types of DTM MXenes, their synthesis techniques, and the impact of these methods on their physicochemical properties and electrochemical performance. Additionally, it provides a critical analysis of the causes of instability in MXenes, particularly DTMs, from synthesis to application. The challenges associated with these materials are discussed, along with opportunities and prospects for enhancing synthesis, structural tuning, surface modification, and applications in electrochemical energy storage.

双过渡金属(DTM)MXenes 是最近发现的一类二维复合纳米材料,在储能应用方面具有卓越的潜力。自 2015 年出现以来,DTM MXenes 已将其组成边界扩展到传统的单金属碳化物和氮化物 MXenes 之外。DTM MXenes 通过改变组成过渡金属和层状晶格内的位置,提供了可调的结构和性能。这些 MXenes 可以两种主要形式存在:有序 DTM 和固溶体。DTM MXenes 的组成多样性为提高其在电化学储能应用中的性能提供了机会。然而,DTM MXenes 的质量、稳定性和表面化学性质受到多种因素的影响,包括蚀刻工艺、蚀刻剂类型和合成路线。目前,有关实验合成 DTM MXenes 的文献有限,大多数研究都集中在碳化物基 MXenes 上。大多数文章只致力于研究通用的合成策略。虽然大量理论研究探讨了蚀刻剂的适用性、合成参数以及生产具有选择性末端官能团的高质量 MXene 的方法,但对其稳定性问题还没有进行深入研究。本综述探讨了各种类型的 DTM MX 烯、其合成技术以及这些方法对其物理化学特性和电化学性能的影响。此外,它还对 MXenes(尤其是 DTM)从合成到应用过程中的不稳定性原因进行了批判性分析。报告还讨论了与这些材料相关的挑战,以及加强合成、结构调整、表面改性和电化学储能应用的机遇和前景。
{"title":"Double transition metal MXenes for enhanced electrochemical applications: Challenges and opportunities","authors":"Faiza Bibi,&nbsp;Abdul Hanan,&nbsp;Irfan Ali Soomro,&nbsp;Arshid Numan,&nbsp;Mohammad Khalid","doi":"10.1002/eom2.12485","DOIUrl":"10.1002/eom2.12485","url":null,"abstract":"<p>Double transition metal (DTM) MXenes are a recently discovered class of two-dimensional composite nanomaterials with excellent potential in energy storage applications. Since their emergence in 2015, DTM MXenes have expanded their composition boundary beyond traditional single-metal carbide and nitride MXenes. DTM MXenes offer tunable structures and properties through variations in the constituent transition metals and positioning within the layered lattice. These MXenes can exist in two primary forms: ordered DTMs and solid solutions. The compositional versatility of DTM MXenes offers opportunities to enhance their performance in electrochemical energy storage applications. However, the quality, stability, and surface chemistry of DTM MXenes are influenced by several factors, including the etching process, etchant type, and synthesis route. Currently, limited literature is available on experimentally synthesized DTM MXenes, with most studies focusing on carbide-based MXenes. Most of the articles have dedicated their efforts only to generalized synthesis strategies. Although extensive theoretical studies have explored the suitability of etchants, synthesis parameters, and methods for producing high-quality MXene with selective terminal functional groups, their stability issues have not been thoroughly examined. This review addresses various types of DTM MXenes, their synthesis techniques, and the impact of these methods on their physicochemical properties and electrochemical performance. Additionally, it provides a critical analysis of the causes of instability in MXenes, particularly DTMs, from synthesis to application. The challenges associated with these materials are discussed, along with opportunities and prospects for enhancing synthesis, structural tuning, surface modification, and applications in electrochemical energy storage.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 9","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Addressing electrode passivation in lithium–sulfur batteries by site-selective morphology-controlled Li2S formation 通过位点选择性形貌控制 Li2S 的形成解决锂硫电池中的电极钝化问题
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-08-22 DOI: 10.1002/eom2.12483
Ilju Kim, Jinkwan Jung, Sejin Kim, Hannah Cho, Hyunwon Chu, Wonhee Jo, Dongjae Shin, Hyeokjin Kwon, Hee-Tak Kim

The sulfur utilization efficiency of lithium–sulfur batteries is often limited by the uncontrolled electrodeposition of the insulating Li2S and the resulting electrode passivation. Herein, purposeful electrode and electrolyte design is used to realize site-selective three-dimensional (3D) Li2S electrodeposition and thus mitigate the above problem. Site-selective Li2S nucleation is induced at the tips of CoP nanoneedles grown on a carbon cloth electrode, and the 3D growth of Li2S at these tips without the passivation of the inner part is achieved using a LiBr-containing high-donor-number electrolyte. The controlled Li2S morphology is rationalized by considering the tip effect, the energy of Li2S binding on the electrode surface, and the solubility of Li2S in the electrolyte. Owing to the suppressed electrode passivation, CoP nanoneedle–decorated carbon cloth electrode and LiBr-containing electrolyte deliver a capacity of >1400 mAh gs−1 at a current density of 0.33 A gs−1. Thus, this work paves the way for the active control of Li2S morphology for high-performance lithium–sulfur batteries.

锂硫电池的硫利用效率通常受制于绝缘的 Li2S 不受控制的电沉积以及由此导致的电极钝化。在此,利用有目的的电极和电解质设计实现了位点选择性三维(3D)Li2S 电沉积,从而缓解了上述问题。在碳布电极上生长的 CoP 纳米针尖上诱导了定点选择性 Li2S 成核,并使用含 LiBr 的高钝化数电解质在这些针尖上实现了 Li2S 的三维生长,而无需对内部进行钝化。通过考虑尖端效应、Li2S 与电极表面结合的能量以及 Li2S 在电解质中的溶解度,实现了对 Li2S 形态的合理控制。由于抑制了电极钝化,CoP 纳米针状装饰碳布电极和含 LiBr 的电解液在 0.33 A gs-1 的电流密度下可产生 1400 mAh gs-1 的容量。因此,这项工作为主动控制 Li2S 形态以实现高性能锂硫电池铺平了道路。
{"title":"Addressing electrode passivation in lithium–sulfur batteries by site-selective morphology-controlled Li2S formation","authors":"Ilju Kim,&nbsp;Jinkwan Jung,&nbsp;Sejin Kim,&nbsp;Hannah Cho,&nbsp;Hyunwon Chu,&nbsp;Wonhee Jo,&nbsp;Dongjae Shin,&nbsp;Hyeokjin Kwon,&nbsp;Hee-Tak Kim","doi":"10.1002/eom2.12483","DOIUrl":"10.1002/eom2.12483","url":null,"abstract":"<p>The sulfur utilization efficiency of lithium–sulfur batteries is often limited by the uncontrolled electrodeposition of the insulating Li<sub>2</sub>S and the resulting electrode passivation. Herein, purposeful electrode and electrolyte design is used to realize site-selective three-dimensional (3D) Li<sub>2</sub>S electrodeposition and thus mitigate the above problem. Site-selective Li<sub>2</sub>S nucleation is induced at the tips of CoP nanoneedles grown on a carbon cloth electrode, and the 3D growth of Li<sub>2</sub>S at these tips without the passivation of the inner part is achieved using a LiBr-containing high-donor-number electrolyte. The controlled Li<sub>2</sub>S morphology is rationalized by considering the tip effect, the energy of Li<sub>2</sub>S binding on the electrode surface, and the solubility of Li<sub>2</sub>S in the electrolyte. Owing to the suppressed electrode passivation, CoP nanoneedle–decorated carbon cloth electrode and LiBr-containing electrolyte deliver a capacity of &gt;1400 mAh g<sub>s</sub><sup>−1</sup> at a current density of 0.33 A g<sub>s</sub><sup>−1</sup>. Thus, this work paves the way for the active control of Li<sub>2</sub>S morphology for high-performance lithium–sulfur batteries.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 9","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12483","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiled mechanism of prolonged stability of Zn anode coated with two-dimensional nanomaterial protective layers toward high-performance aqueous Zn ion batteries 揭示涂有二维纳米材料保护层的锌阳极对高性能水性锌离子电池的长期稳定性机理
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-08-14 DOI: 10.1002/eom2.12482
Yunhee Ahn, Jueun Baek, Seulgi Kim, Ingyu Choi, Jungjoon Yoo, Segi Byun, Dongju Lee

Rechargeable aqueous zinc (Zn) ion batteries (AZIBs) are gaining popularity in large-scale energy storage due to their low cost, high safety, and environmental friendliness; however, dendrite growth and side reactions in Zn metal anodes limit their practical applications. Additionally, the difficulty of developing successful passivation of Zn anodes, combined with large-area coating of protective layers, remains a major limitation to the commercialization of AZIBs. Here, we introduce two-dimensional (2D) nanomaterials including MoS2, h-BN, and Ti3C2Tx MXene as protective layers for Zn anodes, created on a Zn surface using a scalable, large-area spray-coating process. Examinations of electrochemical performance-related material characterizations revealed that a specific type of 2D material with an optimal thickness prevents vertical growth of Zn dendrites, as well as side reactions including hydrogen evolution and corrosion, resulting in stable device operation with minimal overpotential and extended life, even under harsh measurement conditions. The highly stable MoS2@Zn anode allowed the MoS2@Zn//MnO2 full cell to achieve significantly more stable capacity retention, compared with the bare Zn//MnO2 cell. Our versatile and scalable solution-based coating technique for easily forming large-area 2D protective layers on Zn anodes offers new insights concerning improvements to AZIB reliability and performance.

可充电锌(Zn)离子水电池(AZIBs)因其低成本、高安全性和环保性而在大规模储能领域越来越受欢迎;然而,锌金属阳极中的枝晶生长和副反应限制了其实际应用。此外,开发成功钝化锌阳极的难度以及大面积涂覆保护层仍然是 AZIBs 商业化的主要限制因素。在这里,我们介绍了二维(2D)纳米材料,包括 MoS2、h-BN 和 Ti3C2Tx MXene,作为锌阳极的保护层,采用可扩展的大面积喷涂工艺在锌表面形成。对电化学性能相关材料特性的研究表明,具有最佳厚度的特定类型二维材料可以防止锌枝晶的垂直生长,以及包括氢演化和腐蚀在内的副反应,从而使器件即使在苛刻的测量条件下也能以最小的过电位稳定运行,并延长使用寿命。与裸锌//MnO2 电池相比,高度稳定的 MoS2@Zn 阳极使 MoS2@Zn//MnO2 全电池实现了更稳定的容量保持。我们基于溶液的多功能、可扩展涂层技术可在锌阳极上轻松形成大面积二维保护层,这为提高 AZIB 的可靠性和性能提供了新的视角。
{"title":"Unveiled mechanism of prolonged stability of Zn anode coated with two-dimensional nanomaterial protective layers toward high-performance aqueous Zn ion batteries","authors":"Yunhee Ahn,&nbsp;Jueun Baek,&nbsp;Seulgi Kim,&nbsp;Ingyu Choi,&nbsp;Jungjoon Yoo,&nbsp;Segi Byun,&nbsp;Dongju Lee","doi":"10.1002/eom2.12482","DOIUrl":"10.1002/eom2.12482","url":null,"abstract":"<p>Rechargeable aqueous zinc (Zn) ion batteries (AZIBs) are gaining popularity in large-scale energy storage due to their low cost, high safety, and environmental friendliness; however, dendrite growth and side reactions in Zn metal anodes limit their practical applications. Additionally, the difficulty of developing successful passivation of Zn anodes, combined with large-area coating of protective layers, remains a major limitation to the commercialization of AZIBs. Here, we introduce two-dimensional (2D) nanomaterials including MoS<sub>2</sub>, h-BN, and Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene as protective layers for Zn anodes, created on a Zn surface using a scalable, large-area spray-coating process. Examinations of electrochemical performance-related material characterizations revealed that a specific type of 2D material with an optimal thickness prevents vertical growth of Zn dendrites, as well as side reactions including hydrogen evolution and corrosion, resulting in stable device operation with minimal overpotential and extended life, even under harsh measurement conditions. The highly stable MoS<sub>2</sub>@Zn anode allowed the MoS<sub>2</sub>@Zn//MnO<sub>2</sub> full cell to achieve significantly more stable capacity retention, compared with the bare Zn//MnO<sub>2</sub> cell. Our versatile and scalable solution-based coating technique for easily forming large-area 2D protective layers on Zn anodes offers new insights concerning improvements to AZIB reliability and performance.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 9","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12482","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Li1.3Al0.3Ti1.7P3O12 activated PVDF solid electrolyte for advanced lithium–oxygen batteries 用于先进锂-氧电池的 Li1.3Al0.3Ti1.7P3O12 活性 PVDF 固体电解质
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-07-31 DOI: 10.1002/eom2.12481
Caizheng Ou, Hao Zhang, Dan Ma, Hailiang Mu, Xiangqun Zhuge, Yurong Ren, Maryam Bayati, Ben Bin Xu, Xiaoteng Liu, Xiaoqin Zou, Kun Luo

Lithium-ion composite solid electrolyte membranes embedded with Li1.3Al0.3Ti1.7P3O12 and poly(vinylidene fluoride) are prepared using a facile casting method. Furthermore, we added LiI as an active agent for decomposing the anode product. The synergy resulted in a high conductivity of 7.4 mS·cm−1 and lithium-ion mobility of 0.59 and a reduction of the overpotential to 0.86 V for lithium–oxygen batteries (LOBs). The membrane has enhanced Young's modulus of 6.6 GPa that effectively blocked the lithium dendrite growth during the battery operation and puncturing to the membrane led to a significant LOB cycle life of 542 cycles. Meanwhile, Li|Li symmetrical battery overpotential maintained at 42 mV after 470 h of operation.

我们采用简便的浇铸法制备了嵌入 Li1.3Al0.3Ti1.7P3O12 和聚(偏氟乙烯)的锂离子复合固体电解质膜。此外,我们还添加了 LiI 作为分解阳极产物的活性剂。通过协同作用,锂氧电池(LOB)的电导率达到 7.4 mS-cm-1,锂离子迁移率达到 0.59,过电位降低到 0.86 V。膜的杨氏模量提高到 6.6 GPa,可有效阻止电池运行过程中锂枝晶的生长,穿刺膜可使锂氧电池的循环寿命达到 542 次。同时,锂锂对称电池的过电位在运行 470 小时后保持在 42 mV。
{"title":"Li1.3Al0.3Ti1.7P3O12 activated PVDF solid electrolyte for advanced lithium–oxygen batteries","authors":"Caizheng Ou,&nbsp;Hao Zhang,&nbsp;Dan Ma,&nbsp;Hailiang Mu,&nbsp;Xiangqun Zhuge,&nbsp;Yurong Ren,&nbsp;Maryam Bayati,&nbsp;Ben Bin Xu,&nbsp;Xiaoteng Liu,&nbsp;Xiaoqin Zou,&nbsp;Kun Luo","doi":"10.1002/eom2.12481","DOIUrl":"10.1002/eom2.12481","url":null,"abstract":"<p>Lithium-ion composite solid electrolyte membranes embedded with Li<sub>1.3</sub>Al<sub>0.3</sub>Ti<sub>1.7</sub>P<sub>3</sub>O<sub>12</sub> and poly(vinylidene fluoride) are prepared using a facile casting method. Furthermore, we added LiI as an active agent for decomposing the anode product. The synergy resulted in a high conductivity of 7.4 mS·cm<sup>−1</sup> and lithium-ion mobility of 0.59 and a reduction of the overpotential to 0.86 V for lithium–oxygen batteries (LOBs). The membrane has enhanced Young's modulus of 6.6 GPa that effectively blocked the lithium dendrite growth during the battery operation and puncturing to the membrane led to a significant LOB cycle life of 542 cycles. Meanwhile, Li|Li symmetrical battery overpotential maintained at 42 mV after 470 h of operation.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 8","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12481","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141880510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conjugated cobalt-based metal complex nanosheet for fabricating high-performance supercapacitor electrode 用于制造高性能超级电容器电极的共轭钴基金属复合物纳米片
IF 10.7 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-07-16 DOI: 10.1002/eom2.12480
Qian Liu, Zengqi Guo, Zhiwei Xu, Cong Wang, Wai-Yeung Wong

In order to cope with the increasingly serious problem of energy shortage, supercapacitors have been developed as a clean and renewable energy source, and the supercapacitors with excellent energy density and long cycle life are imperative. Here, by employing a facile liquid–liquid (L-L) interfacial method at room temperature (RT), a set of two-dimensional (2D) metal complex nanosheets N1-N3 have been synthesized by the facile coordination between Co2+ ion and 2,3,6,7,10,11-hexaiminotriphenylene (HITP). Given the layered superstructure with well-ordered nanopores, the N1-N3 electrodes displayed excellent capacities of 4751.9, 5770.9 and 6075.2 F g−1 at 1 A g−1, and a good cyclic stability with 92.1% capacity retention after 1000 cycles for the N3 electrode. The asymmetric supercapacitor device with N3 as the positive electrode delivers a maximum energy density of 238.2 Wh kg−1 at a power density of 1610.1 W kg−1 and an excellent cycling stability with a capacitance retention of 109.1% after 5000 cycles. This is the best electroactive bottom-up metal complex nanosheet reported so far for use in supercapacitor, which greatly expands the applicability of this 2D nanomaterial in energy device applications.

为了应对日益严重的能源短缺问题,超级电容器作为一种清洁的可再生能源被开发出来,具有优异能量密度和长循环寿命的超级电容器势在必行。本文采用液-液(L-L)界面法,在室温(RT)下通过Co2+离子与2,3,6,7,10,11-六亚氨基三亚苯(HITP)的简单配位合成了一组二维(2D)金属复合物纳米片N1-N3。由于 N1-N3 电极具有层状上层结构和有序的纳米孔,因此在 1 A g-1 的条件下,N1-N3 电极的容量分别为 4751.9、5770.9 和 6075.2 F g-1,并且具有良好的循环稳定性,N3 电极在 1000 次循环后的容量保持率为 92.1%。以 N3 为正极的非对称超级电容器装置在功率密度为 1610.1 W kg-1 时的最大能量密度为 238.2 Wh kg-1,循环稳定性极佳,5000 次循环后电容保持率为 109.1%。这是迄今为止报道的用于超级电容器的最佳电活性自下而上金属复合物纳米片,极大地扩展了这种二维纳米材料在能源设备应用中的适用性。
{"title":"Conjugated cobalt-based metal complex nanosheet for fabricating high-performance supercapacitor electrode","authors":"Qian Liu,&nbsp;Zengqi Guo,&nbsp;Zhiwei Xu,&nbsp;Cong Wang,&nbsp;Wai-Yeung Wong","doi":"10.1002/eom2.12480","DOIUrl":"10.1002/eom2.12480","url":null,"abstract":"<p>In order to cope with the increasingly serious problem of energy shortage, supercapacitors have been developed as a clean and renewable energy source, and the supercapacitors with excellent energy density and long cycle life are imperative. Here, by employing a facile liquid–liquid (L-L) interfacial method at room temperature (RT), a set of two-dimensional (2D) metal complex nanosheets N1-N3 have been synthesized by the facile coordination between Co<sup>2+</sup> ion and 2,3,6,7,10,11-hexaiminotriphenylene (HITP). Given the layered superstructure with well-ordered nanopores, the N1-N3 electrodes displayed excellent capacities of 4751.9, 5770.9 and 6075.2 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, and a good cyclic stability with 92.1% capacity retention after 1000 cycles for the N3 electrode. The asymmetric supercapacitor device with N3 as the positive electrode delivers a maximum energy density of 238.2 Wh kg<sup>−1</sup> at a power density of 1610.1 W kg<sup>−1</sup> and an excellent cycling stability with a capacitance retention of 109.1% after 5000 cycles. This is the best electroactive bottom-up metal complex nanosheet reported so far for use in supercapacitor, which greatly expands the applicability of this 2D nanomaterial in energy device applications.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 8","pages":""},"PeriodicalIF":10.7,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12480","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141721910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
EcoMat
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1