Haiyan Fan, Xinxin Zhang, Jianhua Xiao, Wenjie Chen, Qiyuan Lin, Zi Shyun Ng, Yitao Lin, Yi Su, Ludi Pan, Yipeng Su, Shuaiyang Ren, Haowen Liu, Xuanzhang Li, Yuegang Zhang
Rechargeable magnesium metal batteries need an electrolyte that forms a stable and ionically conductive solid electrolyte interphase (SEI) on the anodes. Here, we used molecular dynamic simulation, density functional theory calculation, and X-ray photoelectron spectroscopy analysis to investigate the solvation structures and SEI compositions in electrolytes consisting of dual-salts, magnesium bis(trifluoromethanesulfonyl)imide (MgTFSI2), and MgCl2, with different additives in 1,2-dimethoxyethane (DME) solvent. We found that the formed [Mg3(μ-Cl)4(DME)mTFSI2] (m = 3, 5) inner-shell solvation clusters in MgTFSI2-MgCl2/DME electrolyte could easily decompose and form a MgO- and MgF2-rich SEI. Such electron-rich inorganic species in the SEI, especially MgF2, turned out to be detrimental for Mg plating/stripping. To reduce the MgF2 and MgO contents in SEI, we introduce an electron-deficient tri(2,2,2-trifluoroethyl) borate (TFEB) additive in the electrolyte. Mg//Mg cells using the MgTFSI2-MgCl2/DME-TFEB electrolyte could cycle stably for over 400 h with a small polarization voltage of ~150 mV. Even with the presence of 800 ppm H2O, the electrolyte with TFEB additive could still preserve its good electrochemical performance. The optimized electrolyte also enabled stable cycling and high-rate capability for Mg//Mo6S8 and Mg//CuS full cells, showing great potential for future applications.
{"title":"Tailoring Electrode–Electrolyte Interface Using an Electron-Deficient Borate-Based Additive in MgTFSI2-MgCl2/DME Electrolyte for Rechargeable Magnesium Batteries","authors":"Haiyan Fan, Xinxin Zhang, Jianhua Xiao, Wenjie Chen, Qiyuan Lin, Zi Shyun Ng, Yitao Lin, Yi Su, Ludi Pan, Yipeng Su, Shuaiyang Ren, Haowen Liu, Xuanzhang Li, Yuegang Zhang","doi":"10.1002/eem2.12792","DOIUrl":"https://doi.org/10.1002/eem2.12792","url":null,"abstract":"Rechargeable magnesium metal batteries need an electrolyte that forms a stable and ionically conductive solid electrolyte interphase (SEI) on the anodes. Here, we used molecular dynamic simulation, density functional theory calculation, and X-ray photoelectron spectroscopy analysis to investigate the solvation structures and SEI compositions in electrolytes consisting of dual-salts, magnesium bis(trifluoromethanesulfonyl)imide (MgTFSI<sub>2</sub>), and MgCl<sub>2</sub>, with different additives in 1,2-dimethoxyethane (DME) solvent. We found that the formed [Mg<sub>3</sub>(μ-Cl)<sub>4</sub>(DME)<sub>m</sub>TFSI<sub>2</sub>] (<i>m</i> = 3, 5) inner-shell solvation clusters in MgTFSI<sub>2</sub>-MgCl<sub>2</sub>/DME electrolyte could easily decompose and form a MgO- and MgF<sub>2</sub>-rich SEI. Such electron-rich inorganic species in the SEI, especially MgF<sub>2</sub>, turned out to be detrimental for Mg plating/stripping. To reduce the MgF<sub>2</sub> and MgO contents in SEI, we introduce an electron-deficient tri(2,2,2-trifluoroethyl) borate (TFEB) additive in the electrolyte. Mg//Mg cells using the MgTFSI<sub>2</sub>-MgCl<sub>2</sub>/DME-TFEB electrolyte could cycle stably for over 400 h with a small polarization voltage of ~150 mV. Even with the presence of 800 ppm H<sub>2</sub>O, the electrolyte with TFEB additive could still preserve its good electrochemical performance. The optimized electrolyte also enabled stable cycling and high-rate capability for Mg//Mo<sub>6</sub>S<sub>8</sub> and Mg//CuS full cells, showing great potential for future applications.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586494","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}
Jie Zhang, Li Zhou, Xiaohong Xia, Yun Gao, Zhongbing Huang
Decoupling electrical and thermal properties to enhance the figure of merit of thermoelectric materials underscores an in-depth understanding of the mechanisms that govern the transfer of charge carriers. Typically, a factor that contributes to the optimization of thermal conductivity is often found to be detrimental to the electrical transport properties. Here, we systematically investigated 26 dimeric MX2-type compounds (where M represents a metal and X represents a nonmetal element) to explore the influence of the electronic configurations of metal cations on lattice thermal transport and thermoelectric performance using first-principles calculations. A principled scheme has been identified that the filled outer orbitals of the cation lead to a significantly lower lattice thermal conductivity compared to that of the partly occupied case for MX2, due to the much weakened bonds manifested by the shallow potential well, smaller interatomic force constants, and higher atomic displacement parameters. Based on these findings, we propose two ionic compounds, BaAs and BaSe2, to realize reasonable high electrical conductivities through the structural anisotropy caused by the inserted covalent X2 dimers while still maintaining the large lattice anharmonicity. The combined superior electrical and thermal properties of BaSe2 lead to a high n-type thermoelectric ZT value of 2.3 at 500 K. This work clarifies the structural origin of the heat transport properties of dimeric MX2-type compounds and provides an insightful strategy for developing promising thermoelectric materials.
{"title":"Occupied Outer Cationic Orbitals in Dimeric MX2-Type BaSe2 Compound Lead to Reduced Thermal Conductivity and High Thermoelectric Performance","authors":"Jie Zhang, Li Zhou, Xiaohong Xia, Yun Gao, Zhongbing Huang","doi":"10.1002/eem2.12799","DOIUrl":"https://doi.org/10.1002/eem2.12799","url":null,"abstract":"Decoupling electrical and thermal properties to enhance the figure of merit of thermoelectric materials underscores an in-depth understanding of the mechanisms that govern the transfer of charge carriers. Typically, a factor that contributes to the optimization of thermal conductivity is often found to be detrimental to the electrical transport properties. Here, we systematically investigated 26 dimeric MX<sub>2</sub>-type compounds (where M represents a metal and X represents a nonmetal element) to explore the influence of the electronic configurations of metal cations on lattice thermal transport and thermoelectric performance using first-principles calculations. A principled scheme has been identified that the filled outer orbitals of the cation lead to a significantly lower lattice thermal conductivity compared to that of the partly occupied case for MX<sub>2</sub>, due to the much weakened bonds manifested by the shallow potential well, smaller interatomic force constants, and higher atomic displacement parameters. Based on these findings, we propose two ionic compounds, BaAs and BaSe<sub>2</sub>, to realize reasonable high electrical conductivities through the structural anisotropy caused by the inserted covalent X<sub>2</sub> dimers while still maintaining the large lattice anharmonicity. The combined superior electrical and thermal properties of BaSe<sub>2</sub> lead to a high n-type thermoelectric ZT value of 2.3 at 500 K. This work clarifies the structural origin of the heat transport properties of dimeric MX<sub>2</sub>-type compounds and provides an insightful strategy for developing promising thermoelectric materials.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141577555","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}
Gopiraman Mayakrishnan, Ramkumar Vanaraj, Junpeng Xiong, Muhammad Farooq, Azeem Ullah, Keqin Zhang, Seong Cheol Kim, Ick Soo Kim
Surface area, pore properties, synergistic behavior, homogenous dispersion, and interactions between carbon matrix and metal-nanostructures are the key factors for achieving the better performance of carbon-metal based (electro)catalysts. However, the traditional hydro- or solvothermal preparation of (electro)catalysts, particularly, bi- or tri-metallic nanostructures anchored graphene (G) or carbon nanotubes (CNTs), often pose to poor metal–support interaction, low synergism, and patchy dispersion. At first, bimetallic flower-like-CuFeS2/NG and cube-like-NiFeS2/NCNTs nanocomposites were prepared by solvothermal method. The resultant bimetallic nanocomposites were employed to derive the 2D-nano-sandwiched Fe2CuNiS4/NGCNTs-SW (electro)catalyst by a very simple and green urea-mediated “mix-heat” method. The desired physicochemical properties of Fe2CuNiS4/NGCNTs-SW such as multiple active sites, strong metal-support interaction, homogenous dispersion and enhanced surface area were confirmed by various microscopic and spectroscopic techniques. To the best of our knowledge, this is the first urea-mediated “mix-heat” method for preparing 2D-nano-sandwiched carbon-metal-based (electro)catalysts. The Fe2CuNiS4/NGCNTs-SW was found to be highly effective for alkaline-mediated oxygen evolution reaction at low onset potential of 284.24 mV, and the stable current density of 10 mA cm−2 in 1.0 m KOH for 10 h. Further, the Fe2CuNiS4/NGCNTs-SW demonstrated excellent catalytic activity in the reduction of 4-nitrophenol with good kapp value of 87.71 × 10−2 s−1 and excellent reusability over five cycles. Overall, the developed urea-mediated “mix-heat” method is highly efficient for the preparation of metal-nanoarchitectures anchored 2D-nano-sandwiched (electro)catalysts with high synergism, uniform dispersion and excellent metal-support interaction.
表面积、孔隙特性、协同行为、均匀分散以及碳基质与金属纳米结构之间的相互作用是实现碳-金属（电）催化剂更佳性能的关键因素。然而，传统的水热法或溶热法制备（电）催化剂，特别是锚定石墨烯（G）或碳纳米管（CNT）的双金属或三金属纳米结构，往往会造成金属与支撑物相互作用不良、协同性低和分散不均匀等问题。首先，采用溶热法制备了双金属花状-CuFeS2/NG 和立方体状-NiFeS2/CNNTs 纳米复合材料。通过一种非常简单和绿色的尿素介导的 "混合加热 "方法，将得到的双金属纳米复合材料用于制备二维纳米砂织 Fe2CuNiS4/NGCNTs-SW（电）催化剂。各种显微镜和光谱技术证实了 Fe2CuNiS4/NGCNTs-SW 所具有的理想理化特性，如多活性位点、强金属-支撑相互作用、均匀分散和增大的比表面积。据我们所知，这是第一种以尿素为介质的 "混合加热 "法制备二维纳米砂基碳-金属（电）催化剂。研究发现，Fe2CuNiS4/NGCNTs-SW 对碱介导的氧进化反应非常有效，起始电位低至 284.24 mV，在 1.0 m KOH 中 10 h 的稳定电流密度为 10 mA cm-2。总之，所开发的尿素介导的 "混合加热 "方法可高效制备锚定金属纳米结构的二维纳米砂织（电）催化剂，该方法具有高度的协同性、均匀的分散性和优异的金属-支撑相互作用。
{"title":"Vastly Synergistic Fe2CuNiS4-Nanoarchitectures Anchored 2D-Nano-Sandwich Derived from Flower-Like-CuFeS2/N-Graphene and Cube-Like-NiFeS2/N-CNTs for Water Oxidation and Nitrophenol Reduction","authors":"Gopiraman Mayakrishnan, Ramkumar Vanaraj, Junpeng Xiong, Muhammad Farooq, Azeem Ullah, Keqin Zhang, Seong Cheol Kim, Ick Soo Kim","doi":"10.1002/eem2.12788","DOIUrl":"https://doi.org/10.1002/eem2.12788","url":null,"abstract":"Surface area, pore properties, synergistic behavior, homogenous dispersion, and interactions between carbon matrix and metal-nanostructures are the key factors for achieving the better performance of carbon-metal based (electro)catalysts. However, the traditional hydro- or solvothermal preparation of (electro)catalysts, particularly, bi- or tri-metallic nanostructures anchored graphene (G) or carbon nanotubes (CNTs), often pose to poor metal–support interaction, low synergism, and patchy dispersion. At first, bimetallic flower-like-CuFeS<sub>2</sub>/NG and cube-like-NiFeS<sub>2</sub>/NCNTs nanocomposites were prepared by solvothermal method. The resultant bimetallic nanocomposites were employed to derive the 2D-nano-sandwiched Fe<sub>2</sub>CuNiS<sub>4</sub>/NGCNTs-SW (electro)catalyst by a very simple and green urea-mediated “mix-heat” method. The desired physicochemical properties of Fe<sub>2</sub>CuNiS<sub>4</sub>/NGCNTs-SW such as multiple active sites, strong metal-support interaction, homogenous dispersion and enhanced surface area were confirmed by various microscopic and spectroscopic techniques. To the best of our knowledge, this is the first urea-mediated “mix-heat” method for preparing 2D-nano-sandwiched carbon-metal-based (electro)catalysts. The Fe<sub>2</sub>CuNiS<sub>4</sub>/NGCNTs-SW was found to be highly effective for alkaline-mediated oxygen evolution reaction at low onset potential of 284.24 mV, and the stable current density of 10 mA cm<sup>−2</sup> in 1.0 <span>m</span> KOH for 10 h. Further, the Fe<sub>2</sub>CuNiS<sub>4</sub>/NGCNTs-SW demonstrated excellent catalytic activity in the reduction of 4-nitrophenol with good k<sub>app</sub> value of 87.71 × 10<sup>−2</sup> s<sup>−1</sup> and excellent reusability over five cycles. Overall, the developed urea-mediated “mix-heat” method is highly efficient for the preparation of metal-nanoarchitectures anchored 2D-nano-sandwiched (electro)catalysts with high synergism, uniform dispersion and excellent metal-support interaction.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569274","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}
Jacobus C. Duburg, Jonathan Avaro, Leonard Krupnik, Bruno F.B. Silva, Antonia Neels, Thomas J. Schmidt, Lorenz Gubler
The all-vanadium redox flow battery (VRFB) plays an important role in the energy transition toward renewable technologies by providing grid-scale energy storage. Their deployment, however, is limited by the lack of membranes that provide both a high energy efficiency and capacity retention. Typically, the improvement of the battery's energy efficiency comes at the cost of its capacity retention. Herein, novel N-alkylated and N-benzylated meta-polybenzimidazole (m-PBI) membranes are used to understand the molecular requirements of the polymer electrolyte in a vanadium redox flow battery, providing an important toolbox for future research toward next-generation membrane materials in energy storage devices. The addition of an ethyl side chain to the m-PBI backbone increases its affinity toward the acidic electrolyte, thereby increasing its ionic conductivity and the corresponding energy efficiency of the VRFB cell from 70% to 78% at a current density of 200 mA cm−2. In addition, cells equipped with ethylated m-PBI showed better capacity retention than their pristine counterpart, respectively 91% versus 87%, over 200 cycles at 200 mA cm−2. The outstanding VRFB cycling performance, together with the low-cost and fluorine-free chemistry of the N-alkylated m-PBI polymer, makes this material a promising membrane to be used in next-generation VRFB systems.
{"title":"Design Principles for High-Performance Meta-Polybenzimidazole Membranes for Vanadium Redox Flow Batteries","authors":"Jacobus C. Duburg, Jonathan Avaro, Leonard Krupnik, Bruno F.B. Silva, Antonia Neels, Thomas J. Schmidt, Lorenz Gubler","doi":"10.1002/eem2.12793","DOIUrl":"https://doi.org/10.1002/eem2.12793","url":null,"abstract":"The all-vanadium redox flow battery (VRFB) plays an important role in the energy transition toward renewable technologies by providing grid-scale energy storage. Their deployment, however, is limited by the lack of membranes that provide both a high energy efficiency and capacity retention. Typically, the improvement of the battery's energy efficiency comes at the cost of its capacity retention. Herein, novel N-alkylated and N-benzylated <i>meta</i>-polybenzimidazole (<i>m</i>-PBI) membranes are used to understand the molecular requirements of the polymer electrolyte in a vanadium redox flow battery, providing an important toolbox for future research toward next-generation membrane materials in energy storage devices. The addition of an ethyl side chain to the <i>m</i>-PBI backbone increases its affinity toward the acidic electrolyte, thereby increasing its ionic conductivity and the corresponding energy efficiency of the VRFB cell from 70% to 78% at a current density of 200 mA cm<sup>−2</sup>. In addition, cells equipped with ethylated <i>m</i>-PBI showed better capacity retention than their pristine counterpart, respectively 91% versus 87%, over 200 cycles at 200 mA cm<sup>−2</sup>. The outstanding VRFB cycling performance, together with the low-cost and fluorine-free chemistry of the N-alkylated <i>m</i>-PBI polymer, makes this material a promising membrane to be used in next-generation VRFB systems.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551899","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}
Shayan Angizi, Sayed Ali Ahmad Alem, Mahdi Torabian, Maryam Khalaj, Dmitri Golberg, Amir Pakdel
The current global warming, coupled with the growing demand for energy in our daily lives, necessitates the development of more efficient and reliable energy storage devices. Lithium batteries (LBs) are at the forefront of emerging power sources addressing these challenges. Recent studies have shown that integrating hexagonal boron nitride (h-BN) nanomaterials into LBs enhances the safety, longevity, and electrochemical performance of all LB components, including electrodes, electrolytes, and separators, thereby suggesting their potential value in advancing eco-friendly energy solutions. This review provides an overview of the most recent applications of h-BN nanomaterials in LBs. It begins with an informative introduction to h-BN nanomaterials and their relevant properties in the context of LB applications. Subsequently, it addresses the challenges posed by h-BN and discusses existing strategies to overcome these limitations, offering valuable insights into the potential of BN nanomaterials. The review then proceeds to outline the functions of h-BN in LB components, emphasizing the molecular-level mechanisms responsible for performance improvements. Finally, the review concludes by presenting the current challenges and prospects of integrating h-BN nanomaterials into battery research.
{"title":"Boron Nitride-Integrated Lithium Batteries: Exploring Innovations in Longevity and Performance","authors":"Shayan Angizi, Sayed Ali Ahmad Alem, Mahdi Torabian, Maryam Khalaj, Dmitri Golberg, Amir Pakdel","doi":"10.1002/eem2.12777","DOIUrl":"https://doi.org/10.1002/eem2.12777","url":null,"abstract":"The current global warming, coupled with the growing demand for energy in our daily lives, necessitates the development of more efficient and reliable energy storage devices. Lithium batteries (LBs) are at the forefront of emerging power sources addressing these challenges. Recent studies have shown that integrating hexagonal boron nitride (h-BN) nanomaterials into LBs enhances the safety, longevity, and electrochemical performance of all LB components, including electrodes, electrolytes, and separators, thereby suggesting their potential value in advancing eco-friendly energy solutions. This review provides an overview of the most recent applications of h-BN nanomaterials in LBs. It begins with an informative introduction to h-BN nanomaterials and their relevant properties in the context of LB applications. Subsequently, it addresses the challenges posed by h-BN and discusses existing strategies to overcome these limitations, offering valuable insights into the potential of BN nanomaterials. The review then proceeds to outline the functions of h-BN in LB components, emphasizing the molecular-level mechanisms responsible for performance improvements. Finally, the review concludes by presenting the current challenges and prospects of integrating h-BN nanomaterials into battery research.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141517953","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}
Krittish Roy, Zinnia Mallick, Charlie O'Mahony, Laura Coffey, Hema Dinesh Barnana, Sarah Markham, Utsa Sarkar, Tewfik Solumane, Ehtsham Ul Haque, Dipankar Mandal, Syed A. M. Tofail
Eco-friendly and antimicrobial globular protein lysozyme is widely produced for several commercial applications. Interestingly, it can also be able to convert mechanical and thermal energy into electricity due to its piezo- and pyroelectric nature. Here, we demonstrate engineering of lysozyme into piezoelectric devices that can exploit the potential of lysozyme as environmentally friendly, biocompatible material for mechanical energy harvesting and sensorics, especially in micropowered electronic applications. Noteworthy that this flexible, shape adaptive devices made of crystalline lysozyme obtained from hen egg white exhibited a longitudinal piezoelectric charge coefficient (d ~ 2.7 pC N−1) and piezoelectric voltage coefficient (g ~ 76.24 mV m N−1) which are comparable to those of quartz (~2.3 pC N−1 and 50 mV m N−1). Simple finger tapping on bio-organic energy harvester (BEH) made of lysozyme produced up to 350 mV peak-to-peak voltage, and a maximum instantaneous power output of 2.2 nW cm−2. We also demonstrated that the BEH could be used for self-powered motion sensing for real-time monitoring of different body functions. These results pave the way toward self-powered, autonomous, environmental-friendly bio-organic devices for flexible energy harvesting, storage, and in wearable healthcare monitoring.
溶菌酶是一种环保型抗菌球状蛋白质，被广泛应用于多种商业领域。有趣的是，由于溶菌酶具有压电和热释电性质，它还能将机械能和热能转化为电能。在这里，我们展示了将溶菌酶加工成压电器件的工程技术，这种器件可以利用溶菌酶作为环保、生物兼容材料的潜力，用于机械能采集和传感器，特别是在微动力电子应用中。值得注意的是，这种由从母鸡蛋清中提取的结晶溶菌酶制成的柔性形状自适应器件显示出与石英（~2.3 pC N-1 和 50 mV m N-1）相当的纵向压电电荷系数（d ~ 2.7 pC N-1）和压电电压系数（g ~ 76.24 mV m N-1）。用手指简单敲击溶菌酶制成的生物有机能量收集器（BEH）可产生高达 350 mV 的峰-峰电压，最大瞬时功率输出为 2.2 nW cm-2。我们还证明，BEH 可用于自供电运动传感，以实时监测不同的身体功能。这些研究成果为实现自供电、自主、环保的生物有机设备铺平了道路，这些设备可用于灵活的能量采集、存储和可穿戴式医疗保健监测。
{"title":"Engineered Lysozyme: An Eco-Friendly Bio-Mechanical Energy Harvester","authors":"Krittish Roy, Zinnia Mallick, Charlie O'Mahony, Laura Coffey, Hema Dinesh Barnana, Sarah Markham, Utsa Sarkar, Tewfik Solumane, Ehtsham Ul Haque, Dipankar Mandal, Syed A. M. Tofail","doi":"10.1002/eem2.12787","DOIUrl":"https://doi.org/10.1002/eem2.12787","url":null,"abstract":"Eco-friendly and antimicrobial globular protein lysozyme is widely produced for several commercial applications. Interestingly, it can also be able to convert mechanical and thermal energy into electricity due to its piezo- and pyroelectric nature. Here, we demonstrate engineering of lysozyme into piezoelectric devices that can exploit the potential of lysozyme as environmentally friendly, biocompatible material for mechanical energy harvesting and sensorics, especially in micropowered electronic applications. Noteworthy that this flexible, shape adaptive devices made of crystalline lysozyme obtained from hen egg white exhibited a longitudinal piezoelectric charge coefficient (<i>d</i> ~ 2.7 pC N<sup>−1</sup>) and piezoelectric voltage coefficient (<i>g</i> ~ 76.24 mV m N<sup>−1</sup>) which are comparable to those of quartz (~2.3 pC N<sup>−1</sup> and 50 mV m N<sup>−1</sup>). Simple finger tapping on bio-organic energy harvester (BEH) made of lysozyme produced up to 350 mV peak-to-peak voltage, and a maximum instantaneous power output of 2.2 nW cm<sup>−2</sup>. We also demonstrated that the BEH could be used for self-powered motion sensing for real-time monitoring of different body functions. These results pave the way toward self-powered, autonomous, environmental-friendly bio-organic devices for flexible energy harvesting, storage, and in wearable healthcare monitoring.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551827","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}
Diego Ontiveros, Sergi Vela, Francesc Viñes, Carmen Sousa
Finding appropriate photocatalysts for solar-driven water (H2O) splitting to generate hydrogen (H2) fuel is a challenging task, particularly when guided by conventional trial-and-error experimental methods. Here, density functional theory (DFT) is used to explore the MXenes photocatalytic properties, an emerging family of two-dimensional (2D) transition metal carbides and nitrides with chemical formula Mn+1XnTx, known to be semiconductors when having Tx terminations. More than 4,000 MXene structures have been screened, considering different compositional (M, X, Tx, and n) and structural (stacking and termination position) factors, to find suitable MXenes with a bandgap in the visible region and band edges that align with the water-splitting half-reaction potentials. Results from bandgap analysis show how, in general, MXenes with n = 1 and transition metals from group III present the most cases with bandgap and promising sizes, with C-MXenes being superior to N-MXenes. From band alignment calculations of candidate systems with a bandgap larger than 1.23 eV, the minimum required for a water-splitting process, Sc2CT2, Y2CT2 (Tx = Cl, Br, S, and Se) and Y2CI2 are highlighted as adequate photocatalysts.
{"title":"Tuning MXenes Towards Their Use in Photocatalytic Water Splitting","authors":"Diego Ontiveros, Sergi Vela, Francesc Viñes, Carmen Sousa","doi":"10.1002/eem2.12774","DOIUrl":"https://doi.org/10.1002/eem2.12774","url":null,"abstract":"Finding appropriate photocatalysts for solar-driven water (H<sub>2</sub>O) splitting to generate hydrogen (H<sub>2</sub>) fuel is a challenging task, particularly when guided by conventional trial-and-error experimental methods. Here, density functional theory (DFT) is used to explore the MXenes photocatalytic properties, an emerging family of two-dimensional (2D) transition metal carbides and nitrides with chemical formula M<sub><i>n+</i>1</sub>X<sub><i>n</i></sub>T<sub><i>x</i></sub>, known to be semiconductors when having T<sub>x</sub> terminations. More than 4,000 MXene structures have been screened, considering different compositional (M, X, T<sub>x</sub>, and <i>n</i>) and structural (stacking and termination position) factors, to find suitable MXenes with a bandgap in the visible region and band edges that align with the water-splitting half-reaction potentials. Results from bandgap analysis show how, in general, MXenes with <i>n</i> = 1 and transition metals from group III present the most cases with bandgap and promising sizes, with C-MXenes being superior to N-MXenes. From band alignment calculations of candidate systems with a bandgap larger than 1.23 eV, the minimum required for a water-splitting process, Sc<sub>2</sub>CT<sub>2</sub>, Y<sub>2</sub>CT<sub>2</sub> (T<sub>x</sub> = Cl, Br, S, and Se) and Y<sub>2</sub>CI<sub>2</sub> are highlighted as adequate photocatalysts.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507377","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}
As one promising carbon-based material, sp3-hybrid carbon nitride has been predicted with various novel physicochemical properties. However, the synthesis of sp3-hybrid carbon nitride is still limited by the nanaoscale, low crystallinity, complex source, and expensive instruments. Herein, we have presented a facile approach to the sp3-hybrid carbon nitride nano/micro-crystals with microwave-assisted confining growth and liquid exfoliation. Actually, the carbon nitride nano/micro-crystals can spontaneously emerge and grow in the microwave-assisted polymerization of citric acid and urea, and the liquid exfoliation can break the bulk disorder polymer to retrieve the highly crystalline carbon nitride nano/micro-crystals. The obtained carbon nitride nano/micro-crystals present superior blue light absorption strength and surprising photoluminescence quantum yields of 57.96% in ethanol and 18.05% in solid state. The experimental characterizations and density functional theory calculations reveal that the interface-trapped localized exciton may contribute to the excellent intrinsic light emission capability of carbon nitride nano/micro-crystals and the interparticle staggered stacking will prevent the aggregation-caused-quenching partially. Finally, the carbon nitride nano/micro-crystals are demonstrated to be potentially useful as the phosphor medium in light-emitting-diode for interrupting blue light-induced eye damage. This work paves new light on the synthesis strategy of sp3-hybrid carbon nitride materials and thus may push forward the development of multiple carbon nitride research.
{"title":"Microwave-Assisted Confining Growth and Liquid Exfoliation of sp3-Hybrid Carbon Nitride Nano/Micro-Crystals","authors":"Chenglong Shen, Qing Lou, Kaikai Liu, Guangsong Zheng, Runwei Song, Jinhao Zang, Xigui Yang, Xing Li, Lin Dong, Chongxin Shan","doi":"10.1002/eem2.12772","DOIUrl":"https://doi.org/10.1002/eem2.12772","url":null,"abstract":"As one promising carbon-based material, sp<sup>3</sup>-hybrid carbon nitride has been predicted with various novel physicochemical properties. However, the synthesis of sp<sup>3</sup>-hybrid carbon nitride is still limited by the nanaoscale, low crystallinity, complex source, and expensive instruments. Herein, we have presented a facile approach to the sp<sup>3</sup>-hybrid carbon nitride nano/micro-crystals with microwave-assisted confining growth and liquid exfoliation. Actually, the carbon nitride nano/micro-crystals can spontaneously emerge and grow in the microwave-assisted polymerization of citric acid and urea, and the liquid exfoliation can break the bulk disorder polymer to retrieve the highly crystalline carbon nitride nano/micro-crystals. The obtained carbon nitride nano/micro-crystals present superior blue light absorption strength and surprising photoluminescence quantum yields of 57.96% in ethanol and 18.05% in solid state. The experimental characterizations and density functional theory calculations reveal that the interface-trapped localized exciton may contribute to the excellent intrinsic light emission capability of carbon nitride nano/micro-crystals and the interparticle staggered stacking will prevent the aggregation-caused-quenching partially. Finally, the carbon nitride nano/micro-crystals are demonstrated to be potentially useful as the phosphor medium in light-emitting-diode for interrupting blue light-induced eye damage. This work paves new light on the synthesis strategy of sp<sup>3</sup>-hybrid carbon nitride materials and thus may push forward the development of multiple carbon nitride research.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507378","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}
Juhyoung Kim, Woonghee Choi, Seong-Ju Hwang, Dong Wook Kim
Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state batteries. The high ion conductivity, mechanical characteristics, and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid electrolytes. However, the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state batteries. Particularly, the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode, comprising various materials. In this study, carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide electrolytes. Several instruments, including electrochemical spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid electrolytes. Sulfide-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.
{"title":"Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life","authors":"Juhyoung Kim, Woonghee Choi, Seong-Ju Hwang, Dong Wook Kim","doi":"10.1002/eem2.12776","DOIUrl":"https://doi.org/10.1002/eem2.12776","url":null,"abstract":"Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state batteries. The high ion conductivity, mechanical characteristics, and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid electrolytes. However, the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state batteries. Particularly, the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode, comprising various materials. In this study, carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide electrolytes. Several instruments, including electrochemical spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid electrolytes. Sulfide-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507379","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}
A commentary on pressure-induced pre-lithiation towards Si anodes in all-solid-state Li-ion batteries (ASSLIBs) using sulfide electrolytes (SEs) is presented. First, feasible pre-lithiation technologies for Si anodes in SE-based ASSLIBs especially the significant pressure-induced pre-lithiation strategies are briefly reviewed. Then, a recent achievement by Meng et al. in this field is elaborated in detail. Finally, the significance of Meng's work is discussed.
{"title":"Pressure-Induced Pre-Lithiation Enables High-Performing Si Anodes in All-Solid-State Batteries","authors":"Weifei Hu, Yuanyuan Li, Jinping Liu","doi":"10.1002/eem2.12786","DOIUrl":"https://doi.org/10.1002/eem2.12786","url":null,"abstract":"A commentary on pressure-induced pre-lithiation towards Si anodes in all-solid-state Li-ion batteries (ASSLIBs) using sulfide electrolytes (SEs) is presented. First, feasible pre-lithiation technologies for Si anodes in SE-based ASSLIBs especially the significant pressure-induced pre-lithiation strategies are briefly reviewed. Then, a recent achievement by Meng et al. in this field is elaborated in detail. Finally, the significance of Meng's work is discussed.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":null,"pages":null},"PeriodicalIF":15.0,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507380","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：