Symmetrical solid oxide fuel cells (SSOFCs) with identical electrodes have gained interesting attention because of their simplified fabrication procedure and reduced processing costs. However, their development is limited by their electrocatalytic activity and stability of the electrode materials used. Here, we report a prototypical SrFeO-based perovskite oxide with formula GdSrFeO (GSF) as a highly effective SSOFC electrode material. It was found that A-site Gd substitution in SrFeO greatly improved its structural stability under reducing atmosphere. Furthermore, doping Gd was able to significantly enhance the electrochemical activity, achieving area-specific resistances of 0.18 Ω cm for the cathode and 0.003 Ω cm for the anode at 800 °C, respectively. The lower polarization resistance could be attributed to the abundant surface oxygen species through the Gd-doping in SrFeO. Benefiting from superior electrochemical activity and structural stability, the symmetrical cell with GSF-0.2 electrode showed reasonable stability and electrochemical performance. These results show that the developed GSF perovskite oxide may be a promising candidate as electrode material for symmetrical SOFCs.
具有相同电极的对称固体氧化物燃料电池（SSOFC）因其简化的制造程序和降低的加工成本而备受关注。然而，它们的发展受到所使用电极材料的电催化活性和稳定性的限制。在此，我们报告了一种基于 SrFeO 的过氧化物原型，其化学式为 GdSrFeO（GSF），作为一种高效的 SSOFC 电极材料。研究发现，在还原气氛下，SrFeO 中的 A 位钆取代大大提高了其结构稳定性。此外，掺杂钆还能显著提高电化学活性，在 800 °C 时，阴极和阳极的特定区域电阻分别为 0.18 Ω cm 和 0.003 Ω cm。较低的极化电阻可归因于通过在 SrFeO 中掺杂钆而产生的丰富的表面氧物种。得益于优异的电化学活性和结构稳定性，采用 GSF-0.2 电极的对称电池表现出了合理的稳定性和电化学性能。这些结果表明，所开发的 GSF 包晶氧化物有可能成为对称 SOFC 的电极材料。
{"title":"Gadolinium-doped SrFeO3 as a highly active and stable electrode for symmetrical solid oxide fuel cells","authors":"Xinyuan Li, Guanghu He, Xinkun Zhou, Haiyan Zhang, Heqing Jiang, Yongcheng Jin, Lei Chu, Minghua Huang","doi":"10.1016/j.mtener.2024.101615","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101615","url":null,"abstract":"Symmetrical solid oxide fuel cells (SSOFCs) with identical electrodes have gained interesting attention because of their simplified fabrication procedure and reduced processing costs. However, their development is limited by their electrocatalytic activity and stability of the electrode materials used. Here, we report a prototypical SrFeO-based perovskite oxide with formula GdSrFeO (GSF) as a highly effective SSOFC electrode material. It was found that A-site Gd substitution in SrFeO greatly improved its structural stability under reducing atmosphere. Furthermore, doping Gd was able to significantly enhance the electrochemical activity, achieving area-specific resistances of 0.18 Ω cm for the cathode and 0.003 Ω cm for the anode at 800 °C, respectively. The lower polarization resistance could be attributed to the abundant surface oxygen species through the Gd-doping in SrFeO. Benefiting from superior electrochemical activity and structural stability, the symmetrical cell with GSF-0.2 electrode showed reasonable stability and electrochemical performance. These results show that the developed GSF perovskite oxide may be a promising candidate as electrode material for symmetrical SOFCs.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"198 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-29DOI: 10.1016/j.mtener.2024.101611
Li Tao, Yuanqiang Huang, Bin Ding, Haoran Wang, Jiahao Tang, Song Zhang, Jun Zhang, Mohammad Khaja Nazeeruddin, Hao Wang
The distinctive benefits of perovskite solar cells, such as their lightweight nature, high flexibility, and ease of deformation, have garnered significant interest. These characteristics make them well-suited for use in portable electronic devices. Nevertheless, a large efficiency gap still exists between laboratory-based small cells and industrial-oriented large-scale modules. One of the primary reasons for the efficiency losses is the limited adhesion at the brittle interface between the perovskite layer and hole transport layer. Herein, potassium acetate is selected to tailor the interface of perovskite/hole transport layer. The presence of potassium acetate between the perovskite layer and hole transport layer has the potential to enhance the p-type perovskite interface. The strengthening of the interface contact could be verified by the utilization of KPFM and DFT calculations. As a result, the charge separation is accelerated associated with the substantial enhancement in from 1.118 V to 1.139 V and the power conversion efficiency of the solar cell has been enhanced, resulting in an increase from 23.76% to 24.81%. Additionally, the perovskite solar module exhibits little loss, with an efficiency of 21.13% with an aperture area of 29.0 cm.
包晶体太阳能电池的独特优势，如轻质、高柔性和易变形等，引起了人们的极大兴趣。这些特性使它们非常适合用于便携式电子设备。然而，基于实验室的小型电池与面向工业的大型模块之间仍然存在巨大的效率差距。效率损失的主要原因之一是过氧化物层和空穴传输层之间的脆性界面粘附力有限。在此，我们选择醋酸钾来定制包晶石/空穴传输层的界面。在包晶层和空穴传输层之间存在醋酸钾有可能增强 p 型包晶界面。利用 KPFM 和 DFT 计算可以验证界面接触的加强。因此，电荷分离加快，电压从 1.118 V 大幅提高到 1.139 V，太阳能电池的功率转换效率也得到提高，从 23.76% 提高到 24.81%。此外，过氧化物太阳能模块的损耗很小，在孔径面积为 29.0 厘米的情况下，效率为 21.13%。
{"title":"Interfacial toughening for high-efficiency perovskite solar modules","authors":"Li Tao, Yuanqiang Huang, Bin Ding, Haoran Wang, Jiahao Tang, Song Zhang, Jun Zhang, Mohammad Khaja Nazeeruddin, Hao Wang","doi":"10.1016/j.mtener.2024.101611","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101611","url":null,"abstract":"The distinctive benefits of perovskite solar cells, such as their lightweight nature, high flexibility, and ease of deformation, have garnered significant interest. These characteristics make them well-suited for use in portable electronic devices. Nevertheless, a large efficiency gap still exists between laboratory-based small cells and industrial-oriented large-scale modules. One of the primary reasons for the efficiency losses is the limited adhesion at the brittle interface between the perovskite layer and hole transport layer. Herein, potassium acetate is selected to tailor the interface of perovskite/hole transport layer. The presence of potassium acetate between the perovskite layer and hole transport layer has the potential to enhance the p-type perovskite interface. The strengthening of the interface contact could be verified by the utilization of KPFM and DFT calculations. As a result, the charge separation is accelerated associated with the substantial enhancement in from 1.118 V to 1.139 V and the power conversion efficiency of the solar cell has been enhanced, resulting in an increase from 23.76% to 24.81%. Additionally, the perovskite solar module exhibits little loss, with an efficiency of 21.13% with an aperture area of 29.0 cm.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"8 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-29DOI: 10.1016/j.mtener.2024.101613
Shuming Zhang, Tao Zhou, Yanjun Chen
The lower intrinsic electronic conductivity of NaV(PO)(NVP) has seriously limited its further development. Herein, Ca/Ni co-doped and carbon nanotubes (CNTs)-coated NaVCaNi(PO)/C@CNTs (CaNi0.07@CNTs) system is presented. Both Ca and Ni are substituted for V, triggering charge compensation and producing p-type doping effect, generating abundant hole carriers to improve electronic conductivity. Furthermore, the ionic radius of Ca is significantly larger than that of V, so introduction of Ca can support NVP crystal structure and improve the stability. Furthermore, the introduction of Ca can increase the lattice spacing, thus expanding the transport channels for sodium ions. The introduction of Ni reduces the resistance suffered during charge transport and optimizes the chemical properties. Meanwhile, due to low valence of Ca and Ni, more Na are designed to be introduced to the NVP system for charge balance. The Na-rich strategy induces excess active Na participating in the de-intercalation process to supply more reversible capacities. Furthermore, the CNTs wrapped around the active grains serves to buffer deformation of the crystal and to establish a conductive network connecting the particles. The after-cycling XRD/SEM/XPS further confirms the improved crystal stability of CaNi0.07@CNTs. Comprehensively, CaNi0.07@CNTs possess superior sodium storage in half and full cells.
由于 NaV(PO)(NVP)的本征电子电导率较低，严重限制了其进一步发展。本文提出了钙镍共掺杂和碳纳米管（CNTs）包覆的 NaVCaNi(PO)/C@CNTs（CaNi0.07@CNTs）体系。钙和镍都被 V 取代，引发电荷补偿并产生 p 型掺杂效应，产生大量空穴载流子，从而提高电子导电性。此外，Ca 的离子半径明显大于 V，因此引入 Ca 可以支撑 NVP 晶体结构并提高其稳定性。此外，Ca 的引入还能增加晶格间距，从而扩大钠离子的传输通道。镍的引入可减少电荷传输过程中的阻力，优化化学特性。同时，由于钙和镍的价数较低，为了平衡电荷，NVP 系统需要引入更多的 Na。富含 Na 的策略促使过量的活性 Na 参与去钙化过程，从而提供更多的可逆容量。此外，包裹在活性晶粒周围的 CNT 可缓冲晶体的变形，并建立连接颗粒的导电网络。循环后的 XRD/SEM/XPS 进一步证实了 CaNi0.07@CNTs 晶体稳定性的提高。综合来看，CaNi0.07@CNTs 在半电池和全电池中都具有优异的钠存储能力。
{"title":"Simultaneous modification of Na-rich and Ca2+/Ni2+ dual-substitution boosting superior electrochemical performance of Na3V2(PO4)3","authors":"Shuming Zhang, Tao Zhou, Yanjun Chen","doi":"10.1016/j.mtener.2024.101613","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101613","url":null,"abstract":"The lower intrinsic electronic conductivity of NaV(PO)(NVP) has seriously limited its further development. Herein, Ca/Ni co-doped and carbon nanotubes (CNTs)-coated NaVCaNi(PO)/C@CNTs (CaNi0.07@CNTs) system is presented. Both Ca and Ni are substituted for V, triggering charge compensation and producing p-type doping effect, generating abundant hole carriers to improve electronic conductivity. Furthermore, the ionic radius of Ca is significantly larger than that of V, so introduction of Ca can support NVP crystal structure and improve the stability. Furthermore, the introduction of Ca can increase the lattice spacing, thus expanding the transport channels for sodium ions. The introduction of Ni reduces the resistance suffered during charge transport and optimizes the chemical properties. Meanwhile, due to low valence of Ca and Ni, more Na are designed to be introduced to the NVP system for charge balance. The Na-rich strategy induces excess active Na participating in the de-intercalation process to supply more reversible capacities. Furthermore, the CNTs wrapped around the active grains serves to buffer deformation of the crystal and to establish a conductive network connecting the particles. The after-cycling XRD/SEM/XPS further confirms the improved crystal stability of CaNi0.07@CNTs. Comprehensively, CaNi0.07@CNTs possess superior sodium storage in half and full cells.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"45 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-28DOI: 10.1016/j.mtener.2024.101614
Xiangda Liu, Xiujun Liu, Zezhou Xia, Yitong Ji, Dongyang Zhang, Yingying Cheng, Xiaotong Liu, Jun Yuan, Xueyuan Yang, Wenchao Huang
Semitransparent organic solar cells (ST-OSCs) based on silver nanowires (AgNWs) top electrodes have attracted significant interest due to their high transmittance and high electrical conductivity characteristics and showed great potential in the field of building integrated photovoltaics (BIPVs). However, the deposition of AgNWs will partially damage the underlying electron transport layer, leading to poor interfacial performance. Thus, the efficiency of ST-OSCs based on AgNWs still lags behind those based on ultrathin metal electrodes. This work develops a bilayer electron transport layer combining zinc oxide nanoparticles (ZnO) and PDINN to improve the interface between the active layer and the top electrode. The best-performing semitransparent device achieves a remarkable 12.5% power conversion efficiency with an average visible light transmittance of 22.9%. By adjusting the acceptor-to-donor ratio and concentration of the active layer, the ST-OSC can achieve the highest light utilization efficiency of 4.0% with a power conversion efficiency of 9.5%. Furthermore, by further optimizing the top electrode and active layer, a bifacial factor of 99.1% is achieved for the ST-OSCs, which is the highest reported bifacial factor so far. This work provides a promising pathway to develop high-efficiency ST-OSCs for the application of building integrated photovoltaics.
{"title":"A semitransparent organic solar cell with a bifacial factor of 99.1%","authors":"Xiangda Liu, Xiujun Liu, Zezhou Xia, Yitong Ji, Dongyang Zhang, Yingying Cheng, Xiaotong Liu, Jun Yuan, Xueyuan Yang, Wenchao Huang","doi":"10.1016/j.mtener.2024.101614","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101614","url":null,"abstract":"Semitransparent organic solar cells (ST-OSCs) based on silver nanowires (AgNWs) top electrodes have attracted significant interest due to their high transmittance and high electrical conductivity characteristics and showed great potential in the field of building integrated photovoltaics (BIPVs). However, the deposition of AgNWs will partially damage the underlying electron transport layer, leading to poor interfacial performance. Thus, the efficiency of ST-OSCs based on AgNWs still lags behind those based on ultrathin metal electrodes. This work develops a bilayer electron transport layer combining zinc oxide nanoparticles (ZnO) and PDINN to improve the interface between the active layer and the top electrode. The best-performing semitransparent device achieves a remarkable 12.5% power conversion efficiency with an average visible light transmittance of 22.9%. By adjusting the acceptor-to-donor ratio and concentration of the active layer, the ST-OSC can achieve the highest light utilization efficiency of 4.0% with a power conversion efficiency of 9.5%. Furthermore, by further optimizing the top electrode and active layer, a bifacial factor of 99.1% is achieved for the ST-OSCs, which is the highest reported bifacial factor so far. This work provides a promising pathway to develop high-efficiency ST-OSCs for the application of building integrated photovoltaics.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"14 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Years of working on perovskite solar cells (PSCs)-based tandem devices and single-junction devices have approved that low annealing temperatures can be beneficial for improving device performances. In this study, pseudo-halogen ion engineering works well in the evaporation/spray-coating method. According to our research, it is has been proven that the addition of formamidine acetate (FAAc) can effectively reduce the annealing temperature from 170 °C to 150 °C, accelerate the maturation process of the perovskite films, and broaden the annealing window. As a result, a perovskite film with homogeneous crystallization and low residual stress is achieved, leading to extended charge carrier lifetimes, elevated photoluminescence quantum yields (PLQY), reduced Urbach energies. The corresponding PSCs were prepared through evaporation/spray-coating method achieves an impressive power conversion efficiency (PCE) of 19.46%, which is the highest efficiency among wide-bandgap (WBG) PSCs fabricated by this method. And the unencapsulated devices exhibit satisfactory stability, retaining 80% of the initial PCE after 600 h of thermal aging at 60 °C and retaining 90% of the initial PCE after 1500 h of 50% humidity aging at 25 °C, respectively.
{"title":"Low temperature method-based evaporation/spray-coating technology for wide bandgap perovskite solar cells","authors":"Cheng Liang, Hong-Qiang Du, Cong Geng, Xinxin Yu, Xiongzhuang Jiang, Shangwei Huang, Fei Long, Liyuan Han, Wangnan Li, Guijie Liang, Bin Li, Yi-Bing Cheng, Yong Peng","doi":"10.1016/j.mtener.2024.101612","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101612","url":null,"abstract":"Years of working on perovskite solar cells (PSCs)-based tandem devices and single-junction devices have approved that low annealing temperatures can be beneficial for improving device performances. In this study, pseudo-halogen ion engineering works well in the evaporation/spray-coating method. According to our research, it is has been proven that the addition of formamidine acetate (FAAc) can effectively reduce the annealing temperature from 170 °C to 150 °C, accelerate the maturation process of the perovskite films, and broaden the annealing window. As a result, a perovskite film with homogeneous crystallization and low residual stress is achieved, leading to extended charge carrier lifetimes, elevated photoluminescence quantum yields (PLQY), reduced Urbach energies. The corresponding PSCs were prepared through evaporation/spray-coating method achieves an impressive power conversion efficiency (PCE) of 19.46%, which is the highest efficiency among wide-bandgap (WBG) PSCs fabricated by this method. And the unencapsulated devices exhibit satisfactory stability, retaining 80% of the initial PCE after 600 h of thermal aging at 60 °C and retaining 90% of the initial PCE after 1500 h of 50% humidity aging at 25 °C, respectively.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"65 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-25DOI: 10.1016/j.mtener.2024.101610
Dong Chen, Di Yin, Shaoce Zhang, SenPo Yip, Johnny C. Ho
Ammonia, with its wide-ranging applications in global industries, plays an indispensable role in the growth and sustainability of modern society. Electrochemical nitrate reduction (eNORR) presents an environmentally friendly pathway for ammonia production, sidestepping the energy consumption and greenhouse gas emissions associated with the conventional Haber–Bosch process. However, developing efficient and selective catalysts for eNORR is challenging due to its intricate multiproton-coupled electron transfer process and the competing hydrogen evolution reaction. This review dives deep into the recent advancements in eNORR, shedding light on the mechanism through spectroscopic studies and innovative strategies for catalyst design. We first lay out the possible reaction pathways and products in eNORR and then introduce a variety of electrochemical characterizations that provide real-time insights into the reaction mechanism. We also explore strategies for rational electrocatalyst design to optimize the performance. Representative examples of advanced materials with high activity, selectivity, and stability are highlighted to underscore the progress made in this field. Finally, we outline emerging opportunities and future directions, such as developing multifunctional nanostructured catalysts through integrated computational and combinatorial approaches. This review aims to provide valuable insights and guidance for developing nitrate electroreduction and the efficient production of green ammonia in industry.
{"title":"Nitrate electroreduction: recent development in mechanistic understanding and electrocatalyst design","authors":"Dong Chen, Di Yin, Shaoce Zhang, SenPo Yip, Johnny C. Ho","doi":"10.1016/j.mtener.2024.101610","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101610","url":null,"abstract":"Ammonia, with its wide-ranging applications in global industries, plays an indispensable role in the growth and sustainability of modern society. Electrochemical nitrate reduction (eNORR) presents an environmentally friendly pathway for ammonia production, sidestepping the energy consumption and greenhouse gas emissions associated with the conventional Haber–Bosch process. However, developing efficient and selective catalysts for eNORR is challenging due to its intricate multiproton-coupled electron transfer process and the competing hydrogen evolution reaction. This review dives deep into the recent advancements in eNORR, shedding light on the mechanism through spectroscopic studies and innovative strategies for catalyst design. We first lay out the possible reaction pathways and products in eNORR and then introduce a variety of electrochemical characterizations that provide real-time insights into the reaction mechanism. We also explore strategies for rational electrocatalyst design to optimize the performance. Representative examples of advanced materials with high activity, selectivity, and stability are highlighted to underscore the progress made in this field. Finally, we outline emerging opportunities and future directions, such as developing multifunctional nanostructured catalysts through integrated computational and combinatorial approaches. This review aims to provide valuable insights and guidance for developing nitrate electroreduction and the efficient production of green ammonia in industry.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"26 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-30DOI: 10.1016/j.mtener.2024.101589
Chuguang Yu, Feng Wu, Mengmeng Qian, Hanlou Li, Ran Wang, Jing Wang, Xiaoyi Xie, Jiaqi Huang, Guoqiang Tan
Titanium-based materials, including titanium dioxide, alkali-titanium oxides, titanium phosphates/oxyphosphates, titanium-based MXenes, and some other complex titanium compounds, have been regarded as promising anode candidates for Li/Na ion batteries, due to their advantages of good stability, high safety, low cost, and easy synthesis. However, poor electrical conductivity, high work potential, and low output capacity largely hinder the practical applications. Core-shell structure has been widely reported as an effective way to address these problems, and tremendous efforts have been made toward this direction. In this review, we offer an overview of core-shell titanium-based anode engineering for highly efficient and stable Li/Na ion batteries. The review presents the recent progresses and challenges in materials discovery, structure design, and electrode engineering, and highlights the advantages and drawbacks of a series of core-shell engineering strategies. In detail, the material structure, morphology, and composition of various core-shell nanocomposites are reviewed; the structure-activity-stability relationship between core-shell electrodes and electrochemical properties is discussed; the effective strategies for core-shell engineering are summarized, and the development prospects of titanium-based anodes are proposed. We anticipate that this review could provide a systematic understanding of core-shell engineering design of high-performance titanium-based anodes.
{"title":"Core-shell engineering of titanium-based anodes toward enhanced electrochemical lithium/sodium storage performance: a review","authors":"Chuguang Yu, Feng Wu, Mengmeng Qian, Hanlou Li, Ran Wang, Jing Wang, Xiaoyi Xie, Jiaqi Huang, Guoqiang Tan","doi":"10.1016/j.mtener.2024.101589","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101589","url":null,"abstract":"Titanium-based materials, including titanium dioxide, alkali-titanium oxides, titanium phosphates/oxyphosphates, titanium-based MXenes, and some other complex titanium compounds, have been regarded as promising anode candidates for Li/Na ion batteries, due to their advantages of good stability, high safety, low cost, and easy synthesis. However, poor electrical conductivity, high work potential, and low output capacity largely hinder the practical applications. Core-shell structure has been widely reported as an effective way to address these problems, and tremendous efforts have been made toward this direction. In this review, we offer an overview of core-shell titanium-based anode engineering for highly efficient and stable Li/Na ion batteries. The review presents the recent progresses and challenges in materials discovery, structure design, and electrode engineering, and highlights the advantages and drawbacks of a series of core-shell engineering strategies. In detail, the material structure, morphology, and composition of various core-shell nanocomposites are reviewed; the structure-activity-stability relationship between core-shell electrodes and electrochemical properties is discussed; the effective strategies for core-shell engineering are summarized, and the development prospects of titanium-based anodes are proposed. We anticipate that this review could provide a systematic understanding of core-shell engineering design of high-performance titanium-based anodes.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"3 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141146625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nowadays, the safety concern for lithium batteries is mostly on the usage of flammable electrolytes and the lithium dendrite formation. The emerging solid polymer electrolytes (SPEs) have been extensively applied to construct solid-state lithium batteries, which hold great promise to circumvent these problems due to their merits including intrinsically high safety, good stability, and high capacity of lithium (Li) metal. Single-ion conducting polymer electrolytes (SICPEs) have great advantages over traditional SPEs due to their high lithium transference numbers (LTN) (near to 1). SICPEs improve the overall performance of the battery by suppressing both concentration polarization and impedance. Herein, this review is to offer timely update of the development of SPEs for solid-state lithium battery applications. Generally, the fundamental principles, classification, key parameters, and ion transport mechanisms of SPEs are summarized, followed by a discussion on the modification method. Furthermore, for SICPEs, a special focus is on synthesis and tuning of negative charge dispersion. In addition, artificial intelligence (AI) and machine learning (ML) in material design for SPEs are pointed out. Moreover, we bring up the challenges and offer solutions for further development of SPEs in solid-state lithium batteries.
{"title":"Development of solid polymer electrolytes for solid-state lithium battery applications","authors":"Jieyan Li, Xin Chen, Saz Muhammad, Shubham Roy, Haiyan Huang, Chen Yu, Zia Ullah, Zeru Wang, Yinghe Zhang, Ke Wang, Bing Guo","doi":"10.1016/j.mtener.2024.101574","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101574","url":null,"abstract":"Nowadays, the safety concern for lithium batteries is mostly on the usage of flammable electrolytes and the lithium dendrite formation. The emerging solid polymer electrolytes (SPEs) have been extensively applied to construct solid-state lithium batteries, which hold great promise to circumvent these problems due to their merits including intrinsically high safety, good stability, and high capacity of lithium (Li) metal. Single-ion conducting polymer electrolytes (SICPEs) have great advantages over traditional SPEs due to their high lithium transference numbers (LTN) (near to 1). SICPEs improve the overall performance of the battery by suppressing both concentration polarization and impedance. Herein, this review is to offer timely update of the development of SPEs for solid-state lithium battery applications. Generally, the fundamental principles, classification, key parameters, and ion transport mechanisms of SPEs are summarized, followed by a discussion on the modification method. Furthermore, for SICPEs, a special focus is on synthesis and tuning of negative charge dispersion. In addition, artificial intelligence (AI) and machine learning (ML) in material design for SPEs are pointed out. Moreover, we bring up the challenges and offer solutions for further development of SPEs in solid-state lithium batteries.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"40 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140837890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-05DOI: 10.1016/j.mtener.2024.101570
Chenghao Qian, Mengna Shi, Changcheng Liu, Que Huang, Yanjun Chen
NaV(PO) (trisodium divanadium (III) tris (orthophosphate [NVP]), the cathode material for sodium ion batteries, faces several challenges, such as lower intrinsic electronic and ionic conductivities, which hinder its commercial viability. In this work, NVP system is modified by introducing sodium carboxymethyl cellulose (Na CMC) to achieve triple modification effects: sodium-rich, cross-linked carbon coating network, and carbon layer surface modification. Meanwhile, CMC, as a porous carbon substrate with large pores, provides a fast migration channel for Na. Similarly, carbon nanotubes (CNTs) grown from the active particles become the connecting carriers between the active particles, thus effectively improving the electron transport. Notably, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images after cycling verify the stabilized porous structure of the NaV(PO)/C@0.7wt.%CMC@CNTs (0.7wt.%CMC@CNTs) composite. Distinctively, the modified 0.7wt.%CMC@CNTs reveals a capacity of 111.4 mAh/g at 0.1 C. It submits a high value of 105.0 mAh/g at 1 C with a capacity retention rate of 84.10% after 1,000 cycles. Even at 15 C, it still releases 86.6 mAh/g with a low capacity decay rate of 0.0230% per cycle after 3,600 cycles. Notably, its capacity retention reaches an astonishing 96.09% after 13,000 cycles at an ultra-high rate of 80 C.
{"title":"In-situ construction of porous carbon substrate from sodium carboxymethyl cellulose boosting ultra-long lifespan for Na3V2(PO4)3 cathode material","authors":"Chenghao Qian, Mengna Shi, Changcheng Liu, Que Huang, Yanjun Chen","doi":"10.1016/j.mtener.2024.101570","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101570","url":null,"abstract":"NaV(PO) (trisodium divanadium (III) tris (orthophosphate [NVP]), the cathode material for sodium ion batteries, faces several challenges, such as lower intrinsic electronic and ionic conductivities, which hinder its commercial viability. In this work, NVP system is modified by introducing sodium carboxymethyl cellulose (Na CMC) to achieve triple modification effects: sodium-rich, cross-linked carbon coating network, and carbon layer surface modification. Meanwhile, CMC, as a porous carbon substrate with large pores, provides a fast migration channel for Na. Similarly, carbon nanotubes (CNTs) grown from the active particles become the connecting carriers between the active particles, thus effectively improving the electron transport. Notably, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images after cycling verify the stabilized porous structure of the NaV(PO)/C@0.7wt.%CMC@CNTs (0.7wt.%CMC@CNTs) composite. Distinctively, the modified 0.7wt.%CMC@CNTs reveals a capacity of 111.4 mAh/g at 0.1 C. It submits a high value of 105.0 mAh/g at 1 C with a capacity retention rate of 84.10% after 1,000 cycles. Even at 15 C, it still releases 86.6 mAh/g with a low capacity decay rate of 0.0230% per cycle after 3,600 cycles. Notably, its capacity retention reaches an astonishing 96.09% after 13,000 cycles at an ultra-high rate of 80 C.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"62 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.1016/j.mtener.2024.101565
Ke Wang, Peiyu Wang, Yue Qian, Xiaoyu Wang, Jianmin Luo, Xinyong Tao, Weiyang Li
Sodium metal batteries (SMBs) are an affordable and energy-dense alternative to meet future energy storage requirements. However, the commercialization of sodium metal anodes (SMAs) is facing challenges of unstable solid electrolyte interphase (SEI), uncontrolled dendrite growth, and large volume change during cycles. To overcome these obstacles, a range of strategies has been explored including the design of composite anode, artificial SEI, modification of separator, as well as solid-state electrolyte. Two-dimensional (2D) materials with atomic thickness exhibit large surface area, attractive physicochemical properties, and high mechanical strength, which offers great promise for enabling SMBs with enhanced stability, cycling performance, and safety. In this review, we first summarize the recent development of SMAs that employ 2D nanomaterials engineering. In addition, different mechanisms of 2D nanomaterials in stabilizing SMAs are discussed in detail. Last, we highlighted future opportunities for 2D nanomaterials to enable the next-generation high-performance SMBs.
钠金属电池（SMB）是一种经济实惠的高能量替代品，可满足未来的储能需求。然而，钠金属阳极（SMA）的商业化正面临着固态电解质相间层（SEI）不稳定、树枝状晶粒生长不受控制以及循环过程中体积变化大等挑战。为了克服这些障碍，人们探索了一系列策略，包括设计复合阳极、人工 SEI、改良分离器以及固态电解质。具有原子厚度的二维（2D）材料具有较大的表面积、诱人的物理化学特性和较高的机械强度，这为实现具有更高的稳定性、循环性能和安全性的 SMB 带来了巨大的希望。在本综述中，我们首先总结了采用二维纳米材料工程的 SMA 的最新发展。此外，还详细讨论了二维纳米材料稳定 SMA 的不同机制。最后，我们强调了二维纳米材料在实现下一代高性能 SMB 方面的未来机遇。
{"title":"Enabling high-performance sodium metal anodes by 2D nanomaterials engineering: a review","authors":"Ke Wang, Peiyu Wang, Yue Qian, Xiaoyu Wang, Jianmin Luo, Xinyong Tao, Weiyang Li","doi":"10.1016/j.mtener.2024.101565","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101565","url":null,"abstract":"Sodium metal batteries (SMBs) are an affordable and energy-dense alternative to meet future energy storage requirements. However, the commercialization of sodium metal anodes (SMAs) is facing challenges of unstable solid electrolyte interphase (SEI), uncontrolled dendrite growth, and large volume change during cycles. To overcome these obstacles, a range of strategies has been explored including the design of composite anode, artificial SEI, modification of separator, as well as solid-state electrolyte. Two-dimensional (2D) materials with atomic thickness exhibit large surface area, attractive physicochemical properties, and high mechanical strength, which offers great promise for enabling SMBs with enhanced stability, cycling performance, and safety. In this review, we first summarize the recent development of SMAs that employ 2D nanomaterials engineering. In addition, different mechanisms of 2D nanomaterials in stabilizing SMAs are discussed in detail. Last, we highlighted future opportunities for 2D nanomaterials to enable the next-generation high-performance SMBs.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"63 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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