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Spring Effect Endowing P-doped Li3VO4 With Long-standing Catalytic Activity for Tuning Cycling Stability of MgH2 (Adv. Energy Mater. 7/2025) 弹簧效应赋予掺杂 P 的 Li3VO4 调节 MgH2 循环稳定性的长期催化活性(Adv. Energy Mater.)
IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-18 DOI: 10.1002/aenm.202570034
Wenqiang Hu, Jiahe Zang, Qisen Wang, Siyuan Xiao, Jichao Zhang, Fang Fang, Zhongliang Ma, Dalin Sun, Yun Song

Hydrogen Storage

In article number 2404650, Zhongliang Ma, Dalin Sun, Yun Song, and co-workers proposed a so-called spring effect to enhance the hydrogen storage performance of MgH2-catalyst system. The local V-P and V-V spring effect can buffer the attacks from the highly reductive Mg and H species, thus facilitating the retention of catalytic activity approaching 100% even after 100 cycles. The results provide a way to design stable catalysts under harsh reduction conditions.

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引用次数: 0
Perovskite-Inspired Cs₂AgBi₂I₉: A Promising Photovoltaic Absorber for Diverse Indoor Environments (Adv. Energy Mater. 7/2025)
IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-18 DOI: 10.1002/aenm.202570033
Mokurala Krishnaiah, Kuntal Singh, Sanchi Monga, Akash Tripathi, Sougata Karmakar, Ramesh Kumar, Christos Tyrpenou, George Volonakis, Debjit Manna, Paavo Mäkinen, K. V. Adarsh, Saswata Bhattacharya, G. Krishnamurthy Grandhi, K. D. M. Rao, Paola Vivo

Indoor Photovoltaics

Developing versatile absorbers for indoor photovoltaics (IPVs) to adapt to various lighting conditions in different indoor environments is crucial for advancing IPVs. In article number 2404547, Saswata Bhattacharya, K. D. M. Rao, Paola Vivo, and co-workers present Cs2AgBi2I9, a new absorber with unique optoelectronic properties compared to other bismuth-based perovskite-inspired materials. Cs2AgBi2I9-based IPVs display high performance under various LED light colours, from warm to cold white.

{"title":"Perovskite-Inspired Cs₂AgBi₂I₉: A Promising Photovoltaic Absorber for Diverse Indoor Environments (Adv. Energy Mater. 7/2025)","authors":"Mokurala Krishnaiah,&nbsp;Kuntal Singh,&nbsp;Sanchi Monga,&nbsp;Akash Tripathi,&nbsp;Sougata Karmakar,&nbsp;Ramesh Kumar,&nbsp;Christos Tyrpenou,&nbsp;George Volonakis,&nbsp;Debjit Manna,&nbsp;Paavo Mäkinen,&nbsp;K. V. Adarsh,&nbsp;Saswata Bhattacharya,&nbsp;G. Krishnamurthy Grandhi,&nbsp;K. D. M. Rao,&nbsp;Paola Vivo","doi":"10.1002/aenm.202570033","DOIUrl":"https://doi.org/10.1002/aenm.202570033","url":null,"abstract":"<p><b>Indoor Photovoltaics</b></p><p>Developing versatile absorbers for indoor photovoltaics (IPVs) to adapt to various lighting conditions in different indoor environments is crucial for advancing IPVs. In article number 2404547, Saswata Bhattacharya, K. D. M. Rao, Paola Vivo, and co-workers present Cs<sub>2</sub>AgBi<sub>2</sub>I<sub>9</sub>, a new absorber with unique optoelectronic properties compared to other bismuth-based perovskite-inspired materials. Cs<sub>2</sub>AgBi<sub>2</sub>I<sub>9</sub>-based IPVs display high performance under various LED light colours, from warm to cold white.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"15 7","pages":""},"PeriodicalIF":24.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202570033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Performance Quasi-Solid-State Thermogalvanic Cells with Metallized Fibril-Based Textile Electrodes and Structure-Breaking Salts (Adv. Energy Mater. 7/2025)
IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-18 DOI: 10.1002/aenm.202570036
Jaejin Choi, Jeongmin Mo, Jaemin Jung, Yeongje Jeong, Jinhan Cho, Jaeyoung Jang

Thermogalvanic Cells

In article number 2304151, Jinhan Cho, Jaeyoung Jang, and co-workers present high-performance quasi-solid-state thermogalvanic cells (QTCs) with Ni fibril-based textile electrodes and structure-breaking salts in hydrogel electrolytes. This study offers a basis for overcoming the performance limitations of QTCs and thus achieving all-flexible and wearable thermogalvanic cells that can power electronic devices using body heat.

{"title":"High-Performance Quasi-Solid-State Thermogalvanic Cells with Metallized Fibril-Based Textile Electrodes and Structure-Breaking Salts (Adv. Energy Mater. 7/2025)","authors":"Jaejin Choi,&nbsp;Jeongmin Mo,&nbsp;Jaemin Jung,&nbsp;Yeongje Jeong,&nbsp;Jinhan Cho,&nbsp;Jaeyoung Jang","doi":"10.1002/aenm.202570036","DOIUrl":"https://doi.org/10.1002/aenm.202570036","url":null,"abstract":"<p><b>Thermogalvanic Cells</b></p><p>In article number 2304151, Jinhan Cho, Jaeyoung Jang, and co-workers present high-performance quasi-solid-state thermogalvanic cells (QTCs) with Ni fibril-based textile electrodes and structure-breaking salts in hydrogel electrolytes. This study offers a basis for overcoming the performance limitations of QTCs and thus achieving all-flexible and wearable thermogalvanic cells that can power electronic devices using body heat.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"15 7","pages":""},"PeriodicalIF":24.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202570036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatial Confinement Effect of Mineral-Based Colloid Electrolyte Enables Stable Interface Reaction for Aqueous Zinc–Manganese Batteries (Adv. Energy Mater. 7/2025)
IF 24.4 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-18 DOI: 10.1002/aenm.202570037
Chuancong Zhou, Zhenming Xu, Qing Nan, Jie Zhang, Yating Gao, Fulong Li, Zaowen Zhao, Zhenyue Xing, Jing Li, Peng Rao, Zhenye Kang, Xiaodong Shi, Xinlong Tian

Aqueous Zinc–Manganese Batteries

Magnesium aluminosilicate-based colloid (MAS-Colloid) electrolyte holds great capability to simultaneously address the issues of zinc dendrite and manganese dissolution for Zn//α-MnO2 batteries owing to the spatial confinement effect of MAS on the active H2O molecules. MAS-Colloid electrolyte guarantees rapid zinc nucleation and reversible zinc deposition behavior for Zn anode, and suppressive manganese dissolution and stable interfacial reaction for α-MnO2 cathode. More in article number 2405387, Xiaodong Shi, Xinlong Tian, and co-workers.

{"title":"Spatial Confinement Effect of Mineral-Based Colloid Electrolyte Enables Stable Interface Reaction for Aqueous Zinc–Manganese Batteries (Adv. Energy Mater. 7/2025)","authors":"Chuancong Zhou,&nbsp;Zhenming Xu,&nbsp;Qing Nan,&nbsp;Jie Zhang,&nbsp;Yating Gao,&nbsp;Fulong Li,&nbsp;Zaowen Zhao,&nbsp;Zhenyue Xing,&nbsp;Jing Li,&nbsp;Peng Rao,&nbsp;Zhenye Kang,&nbsp;Xiaodong Shi,&nbsp;Xinlong Tian","doi":"10.1002/aenm.202570037","DOIUrl":"https://doi.org/10.1002/aenm.202570037","url":null,"abstract":"<p><b>Aqueous Zinc–Manganese Batteries</b></p><p>Magnesium aluminosilicate-based colloid (MAS-Colloid) electrolyte holds great capability to simultaneously address the issues of zinc dendrite and manganese dissolution for Zn//α-MnO<sub>2</sub> batteries owing to the spatial confinement effect of MAS on the active H<sub>2</sub>O molecules. MAS-Colloid electrolyte guarantees rapid zinc nucleation and reversible zinc deposition behavior for Zn anode, and suppressive manganese dissolution and stable interfacial reaction for α-MnO<sub>2</sub> cathode. More in article number 2405387, Xiaodong Shi, Xinlong Tian, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"15 7","pages":""},"PeriodicalIF":24.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.202570037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Performance Silicon Anodes Enabled by Multifunctional Ultrafine Silica Nanoparticle-Embedded Carbon Coatings for Lithium-Ion Batteries
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-17 DOI: 10.1002/aenm.202500189
Zhefei Sun, Quanzhi Yin, Shenghui Zhou, Haoyu Chen, Sifan Wen, Huiping Yang, Xiaoyu Wu, Jianhai Pan, Jiajia Han, Hui Yang, Zilong Zhuang, Shijie Feng, Li Zhang, Dong-Liang Peng, Qiaobao Zhang
Silicon (Si) holds immense promise as viable anode for next-generation high-energy-density Li-ion batteries (LIBs). However, its poor ionic/electronic conductivity and significant volumetric changes during cycling lead to rapidly deteriorated LIB performance. Here, a novel multifunctional coating featuring ultrafine SiO2 nanoparticles (<7 nm) embedded carbon on Si nanoparticles (termed Si@uSiO2-C) to resolve these challenges is proposed. This unique uSiO2-C coating provides high-efficient electron and ion transport pathways, while also improves interfacial stability and mitigates volume changes during cycling, thereby enhancing the conductivity and structural integrity of Si@uSiO2-C, as corroborated by extensive experimental and computational studies. In addition, the abundant interfaces in uSiO2-C coating facilitate Li+ transport and the evenly distributed ultrafine SiO2 nanoparticles impart high electrochemical reactivity and mechanical robustness. Consequently, the Si@uSiO2-C anode achieves a high reversible capacity of 2093 mAh g−1 at 0.2 A g−1, with a high initial Coulombic efficiency of 88.3%, superior rate capability and durability (1000 cycles, 928 mAh g−1 at 1.0 A g−1, 75% capacity retention). Full cells paired with commercial LiFePO4 cathodes demonstrate high cyclability, maintaining 80% capacity retention over 500 cycles at 4 C. This work highlights the vital role of multifunctional coating in promoting the electrochemical performance of Si-based anodes for high-performance LIBs.
{"title":"High-Performance Silicon Anodes Enabled by Multifunctional Ultrafine Silica Nanoparticle-Embedded Carbon Coatings for Lithium-Ion Batteries","authors":"Zhefei Sun, Quanzhi Yin, Shenghui Zhou, Haoyu Chen, Sifan Wen, Huiping Yang, Xiaoyu Wu, Jianhai Pan, Jiajia Han, Hui Yang, Zilong Zhuang, Shijie Feng, Li Zhang, Dong-Liang Peng, Qiaobao Zhang","doi":"10.1002/aenm.202500189","DOIUrl":"https://doi.org/10.1002/aenm.202500189","url":null,"abstract":"Silicon (Si) holds immense promise as viable anode for next-generation high-energy-density Li-ion batteries (LIBs). However, its poor ionic/electronic conductivity and significant volumetric changes during cycling lead to rapidly deteriorated LIB performance. Here, a novel multifunctional coating featuring ultrafine SiO<sub>2</sub> nanoparticles (&lt;7 nm) embedded carbon on Si nanoparticles (termed Si@uSiO<sub>2</sub>-C) to resolve these challenges is proposed. This unique uSiO<sub>2</sub>-C coating provides high-efficient electron and ion transport pathways, while also improves interfacial stability and mitigates volume changes during cycling, thereby enhancing the conductivity and structural integrity of Si@uSiO<sub>2</sub>-C, as corroborated by extensive experimental and computational studies. In addition, the abundant interfaces in uSiO<sub>2</sub>-C coating facilitate Li<sup>+</sup> transport and the evenly distributed ultrafine SiO<sub>2</sub> nanoparticles impart high electrochemical reactivity and mechanical robustness. Consequently, the Si@uSiO<sub>2</sub>-C anode achieves a high reversible capacity of 2093 mAh g<sup>−1</sup> at 0.2 A g<sup>−1</sup>, with a high initial Coulombic efficiency of 88.3%, superior rate capability and durability (1000 cycles, 928 mAh g<sup>−1</sup> at 1.0 A g<sup>−1</sup>, 75% capacity retention). Full cells paired with commercial LiFePO<sub>4</sub> cathodes demonstrate high cyclability, maintaining 80% capacity retention over 500 cycles at 4 C. This work highlights the vital role of multifunctional coating in promoting the electrochemical performance of Si-based anodes for high-performance LIBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"47 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Universal Measurement Protocol and Cell Designs for Liquid‐Based Active Cooling by the Electrochemical Peltier Effect
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-17 DOI: 10.1002/aenm.202405181
Yusuke Wakayama, Hongyao Zhou, Fumitoshi Matoba, Teppei Yamada
Electrochemical Peltier (ECP) effect is an emerging cooling technology, capable of active transfer of heat via entropy change of redox reaction. However, the temperature drop (ΔT) producible from the ECP effect is too small for practical use and its limiting factor remains elusive. In this work, a universal measurement protocol using an alternating square‐wave current is proposed, which effectively distinguishes the ECP effect from Joule heating and provides an accurate and reliable assessment of the experimental results. A general expression for the temperature drop at the steady state (ΔTSS) generated from the ECP effect is derived, which is further validated by its agreement with the experimental results. The ΔTSS increases with increasing interelectrode distance, and the largest value of 0.55 K is achieved. The measurement protocol and theoretical model presented in this study have a high level of generality and are universally applicable to other ECP devices.
{"title":"Universal Measurement Protocol and Cell Designs for Liquid‐Based Active Cooling by the Electrochemical Peltier Effect","authors":"Yusuke Wakayama, Hongyao Zhou, Fumitoshi Matoba, Teppei Yamada","doi":"10.1002/aenm.202405181","DOIUrl":"https://doi.org/10.1002/aenm.202405181","url":null,"abstract":"Electrochemical Peltier (ECP) effect is an emerging cooling technology, capable of active transfer of heat via entropy change of redox reaction. However, the temperature drop (Δ<jats:italic>T</jats:italic>) producible from the ECP effect is too small for practical use and its limiting factor remains elusive. In this work, a universal measurement protocol using an alternating square‐wave current is proposed, which effectively distinguishes the ECP effect from Joule heating and provides an accurate and reliable assessment of the experimental results. A general expression for the temperature drop at the steady state (Δ<jats:italic>T</jats:italic><jats:sub>SS</jats:sub>) generated from the ECP effect is derived, which is further validated by its agreement with the experimental results. The Δ<jats:italic>T</jats:italic><jats:sub>SS</jats:sub> increases with increasing interelectrode distance, and the largest value of 0.55 K is achieved. The measurement protocol and theoretical model presented in this study have a high level of generality and are universally applicable to other ECP devices.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"29 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stable Cycling of Sodium All-Solid-State Batteries with High-Capacity Cathode Presodiation 采用高容量阴极预阳极的全固态钠电池的稳定循环
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-16 DOI: 10.1002/aenm.202405678
Wei Tang, Dapeng Xu, Junlin Wu, Dong Ju Lee, Alexander Fuqua, Feng Li, Yuju Jeon, Wenjuan Bian, Zheng Chen
Sodium all-solid-state batteries (NaSSBs) with an alloy-type anode (e.g., Sn and Sb) offer superior capacity and energy density compared to hard carbon anode. However, the irreversible loss of Na+ at the alloy anode during the initial cycle results in diminished capacity and stability, impairing full-cell performance. This study presents an easy-to-implement cathode presodiation strategy by employing a Na-rich material to address these challenges. Leveraging the high theoretical capacity and suitable voltage window, Na2S is chosen as the Na donor, which is activated by creating a mixed electron-ion conducting network, delivering a high capacity of 511.7 mAh g−1. By adding a small amount (i.e., 3 wt.%) of Na2S to the cathode composite, a NaCrO2 || Sn full cell demonstrated capacity improvement from 90.8 to 118.2 mAh g−1 (based on cathode mass). The capacity-balanced full cell can thus cycle to more than 300 times with >90% capacity retention. This work provides a practical solution to enhance the full-cell performance and advance the transformation from half-cell to full-cell applications of NaSSBs.
{"title":"Stable Cycling of Sodium All-Solid-State Batteries with High-Capacity Cathode Presodiation","authors":"Wei Tang, Dapeng Xu, Junlin Wu, Dong Ju Lee, Alexander Fuqua, Feng Li, Yuju Jeon, Wenjuan Bian, Zheng Chen","doi":"10.1002/aenm.202405678","DOIUrl":"https://doi.org/10.1002/aenm.202405678","url":null,"abstract":"Sodium all-solid-state batteries (NaSSBs) with an alloy-type anode (e.g., Sn and Sb) offer superior capacity and energy density compared to hard carbon anode. However, the irreversible loss of Na<sup>+</sup> at the alloy anode during the initial cycle results in diminished capacity and stability, impairing full-cell performance. This study presents an easy-to-implement cathode presodiation strategy by employing a Na-rich material to address these challenges. Leveraging the high theoretical capacity and suitable voltage window, Na<sub>2</sub>S is chosen as the Na donor, which is activated by creating a mixed electron-ion conducting network, delivering a high capacity of 511.7 mAh g<sup>−1</sup>. By adding a small amount (i.e., 3 wt.%) of Na<sub>2</sub>S to the cathode composite, a NaCrO<sub>2</sub> || Sn full cell demonstrated capacity improvement from 90.8 to 118.2 mAh g<sup>−1</sup> (based on cathode mass). The capacity-balanced full cell can thus cycle to more than 300 times with &gt;90% capacity retention. This work provides a practical solution to enhance the full-cell performance and advance the transformation from half-cell to full-cell applications of NaSSBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the Mechanism of Mn Dissolution Through a Dynamic Cathode‐Electrolyte Interphase on LiMn2O4
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-14 DOI: 10.1002/aenm.202404652
Wenhan Ou, Samuel D. Marks, Rafael Ferreira de Menezes, Rong He, Zihan Zhang, Collin Sindt, Jonathan Thurston, Cherno Jaye, Bruce Cowie, Lars Thomsen, Zengqing Zhuo, Jinghua Guo, Wanli Yang, Ziyue Dong, Robert Tenent, Kayla G. Sprenger, Michael F. Toney
Understanding the formation and evolution of the cathode‐electrolyte interphase (CEI), which forms at the interface between the cathode and electrolyte, is crucial for revealing degradation mechanisms in cathode materials, especially for developing strategies to stabilize the interphase in the strongly oxidizing conditions that evolve at high operating voltages in next‐generation Li‐ion batteries. However, The present understanding of the CEI is challenged by its complex and dynamic nature. In this work, near‐edge X‐ray absorption fine structure spectroscopy, electrochemical characterization, and reactive molecular dynamics simulations are combined to reveal a mechanism for CEI formation and evolution above model LiMn2O4 (LMO) thin‐film electrodes in contact with conventional carbonate‐based electrolytes. It is found that Mn dissolution from LMO can be understood in terms of repetitive Mn3O4 formation and dissolution behavior during cycling, which is closely connected to electrolyte decomposition and a key aspect of the CEI formation and growth. The behavior of the CEI in this model system offers detailed insight into the dynamic chemistry of the interphase, underscoring the important role of electrolyte composition and cathode surface structure in interphase degradation.
阴极电解质间相(CEI)形成于阴极和电解质之间的界面,了解阴极电解质间相(CEI)的形成和演变对于揭示阴极材料的降解机制至关重要,特别是对于制定战略,在下一代锂离子电池高工作电压下的强氧化条件下稳定间相至关重要。然而,目前对 CEI 的了解因其复杂性和动态性而受到挑战。在这项研究中,我们将近边 X 射线吸收精细结构光谱、电化学特性分析和反应分子动力学模拟结合起来,揭示了与传统碳酸盐基电解质接触的模型锰酸锂薄膜电极上 CEI 的形成和演化机制。研究发现,LMO 中锰的溶解可以通过循环过程中重复的 Mn3O4 形成和溶解行为来理解,这与电解质分解密切相关,也是 CEI 形成和增长的一个关键方面。该模型系统中的 CEI 行为提供了对相间动态化学的详细了解,突出了电解质成分和阴极表面结构在相间降解中的重要作用。
{"title":"Unveiling the Mechanism of Mn Dissolution Through a Dynamic Cathode‐Electrolyte Interphase on LiMn2O4","authors":"Wenhan Ou, Samuel D. Marks, Rafael Ferreira de Menezes, Rong He, Zihan Zhang, Collin Sindt, Jonathan Thurston, Cherno Jaye, Bruce Cowie, Lars Thomsen, Zengqing Zhuo, Jinghua Guo, Wanli Yang, Ziyue Dong, Robert Tenent, Kayla G. Sprenger, Michael F. Toney","doi":"10.1002/aenm.202404652","DOIUrl":"https://doi.org/10.1002/aenm.202404652","url":null,"abstract":"Understanding the formation and evolution of the cathode‐electrolyte interphase (CEI), which forms at the interface between the cathode and electrolyte, is crucial for revealing degradation mechanisms in cathode materials, especially for developing strategies to stabilize the interphase in the strongly oxidizing conditions that evolve at high operating voltages in next‐generation Li‐ion batteries. However, The present understanding of the CEI is challenged by its complex and dynamic nature. In this work, near‐edge X‐ray absorption fine structure spectroscopy, electrochemical characterization, and reactive molecular dynamics simulations are combined to reveal a mechanism for CEI formation and evolution above model LiMn<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> (LMO) thin‐film electrodes in contact with conventional carbonate‐based electrolytes. It is found that Mn dissolution from LMO can be understood in terms of repetitive Mn<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub> formation and dissolution behavior during cycling, which is closely connected to electrolyte decomposition and a key aspect of the CEI formation and growth. The behavior of the CEI in this model system offers detailed insight into the dynamic chemistry of the interphase, underscoring the important role of electrolyte composition and cathode surface structure in interphase degradation.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Constructing Compact Hybrid Buffer Interface via Ion Agglomeration Zone Electrolyte for Stable Zn Metal Battery 通过离子聚集区电解质构建用于稳定锌金属电池的紧凑型混合缓冲界面
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-14 DOI: 10.1002/aenm.202405738
Yefei Chen, Weidong He, Kangning Zhao, Xingyun Luo, Jiafeng Zhang, Yongzhong Wu, Xiaopeng Hao
The development of aqueous Zn batteries is plagued by longevity limited at practical condition, due to the unstable electrode‐electrolyte interface. Here, this work designs an extended‐scale ion agglomeration zone (EIAZ) electrolyte to obtain anion combined with cation structures and reduce water activity. The electrolyte nanostructure features nanometer‐scale depleted water zones in which ion pairs are densely packed together to form EIAZ, which facilitates compact hybrid buffer interface formed via a collective ion transmission process and ionic co‐opetition relationship. The convergence and densification models of buffer interface for Zn surface is the result of cations adaptive adsorption that mitigates the concentration polarization of interfacial Zn2+ and prevents water contact with electrodes, constituting an indispensable premise for stabilizing both anode and cathode interface. Moreover, unique electrolyte nanostructure achieves Zn crystallographic optimization and fast interfacial reaction kinetics, generating ultralong cycling stability of 5500 h. Therefore, zinc‐organic batteries can exert outstanding stability for over 3000 cycles and 1000 cycles under high current (10 A g‒1) and high mass loading (14 mg cm−2). Impressively, pouch cell shows an excellent capacity retention of 99.8% with 26.1 mAh after 250 cycles. This study offers a novel perspective for designing electrolyte nanostructures and electrode interfaces for high‐performance Zn batteries.
由于电极-电解质界面不稳定,锌水溶液电池的开发在实际条件下受到寿命限制的困扰。在此,本研究设计了一种扩展尺度离子团聚区(EIAZ)电解质,以获得阴阳离子结合结构并降低水活性。该电解质纳米结构具有纳米尺度的贫水区,离子对密集地聚集在一起形成 EIAZ,这有利于通过集体离子传输过程和离子共竞争关系形成紧凑的混合缓冲界面。Zn 表面缓冲界面的收敛和致密化模型是阳离子自适应吸附的结果,可减轻界面 Zn2+ 的浓度极化,防止水与电极接触,是稳定阳极和阴极界面不可或缺的前提。此外,独特的电解质纳米结构实现了锌晶体学的优化和快速的界面反应动力学,产生了长达 5500 小时的超长循环稳定性。因此,锌-有机电池可以在大电流(10 A g-1)和高负载质量(14 mg cm-2)条件下发挥超过 3000 次循环和 1000 次循环的出色稳定性。令人印象深刻的是,小袋电池在 250 次循环后的容量保持率高达 99.8%,容量为 26.1 mAh。这项研究为设计高性能锌电池的电解质纳米结构和电极界面提供了一个新的视角。
{"title":"Constructing Compact Hybrid Buffer Interface via Ion Agglomeration Zone Electrolyte for Stable Zn Metal Battery","authors":"Yefei Chen, Weidong He, Kangning Zhao, Xingyun Luo, Jiafeng Zhang, Yongzhong Wu, Xiaopeng Hao","doi":"10.1002/aenm.202405738","DOIUrl":"https://doi.org/10.1002/aenm.202405738","url":null,"abstract":"The development of aqueous Zn batteries is plagued by longevity limited at practical condition, due to the unstable electrode‐electrolyte interface. Here, this work designs an extended‐scale ion agglomeration zone (EIAZ) electrolyte to obtain anion combined with cation structures and reduce water activity. The electrolyte nanostructure features nanometer‐scale depleted water zones in which ion pairs are densely packed together to form EIAZ, which facilitates compact hybrid buffer interface formed via a collective ion transmission process and ionic co‐opetition relationship. The convergence and densification models of buffer interface for Zn surface is the result of cations adaptive adsorption that mitigates the concentration polarization of interfacial Zn<jats:sup>2+</jats:sup> and prevents water contact with electrodes, constituting an indispensable premise for stabilizing both anode and cathode interface. Moreover, unique electrolyte nanostructure achieves Zn crystallographic optimization and fast interfacial reaction kinetics, generating ultralong cycling stability of 5500 h. Therefore, zinc‐organic batteries can exert outstanding stability for over 3000 cycles and 1000 cycles under high current (10 A g<jats:sup>‒1</jats:sup>) and high mass loading (14 mg cm<jats:sup>−2</jats:sup>). Impressively, pouch cell shows an excellent capacity retention of 99.8% with 26.1 mAh after 250 cycles. This study offers a novel perspective for designing electrolyte nanostructures and electrode interfaces for high‐performance Zn batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"10 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Situ High‐Temperature Phase Elucidation of Secondary Particles and Segregating Nanoparticles with Surface Coating‐Networking Architecture for High‐Voltage Cathode Life at High Rate
IF 27.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-14 DOI: 10.1002/aenm.202404368
Manikandan Palanisamy, Matthew M. Mench
Secondary microparticles are synthesized using a Mn1.5Ni0.5(OH)2CO3 precursor, which undergoes thermal decomposition and calcination, releasing CO2 and H2O gaseous species. In situ high‐temperature phase elucidation confirms the least degree of disordered phase LiMn1.5Ni0.5O4 cathode without rock‐salt impurity phase and having insignificant content of Mn3+ to stable Fd m structure. Raman spectrum shows a band at 590 cm−1 (F2g(3)) without splitting, confirming spinel compound derived with disordered phase. Microscopic analyses reveal secondary microparticles and segregated primary nanoparticles having surface coating‐conducting network architecture. Cyclic voltammograms of primary nanoparticles show well‐resolved two redox peaks at 4.7 V compared to secondary microparticles, confirming superior kinetic reversibility for Ni2+ to Ni3+ and Ni3+ to Ni4+ redox process. At 20C discharge, segregated primary nanoparticles exhibit a discharge flat voltage profile at 4.3 V and deliver a high reversible capacity of 100 mAh g−1 for the 12th cycle and 86 mAh g−1 for the 1000th cycle, while secondary microparticles deliver 70 mAh g−1 for 12th cycle and declined its cycle operation at 250th cycle with the capacity of < 5 mAh g−1. Results confirm a strong potential for use as a highly durable, cobalt‐free, high‐voltage cathode capable of high‐rate discharge in LIBs.
二次微粒子是使用 Mn1.5Ni0.5(OH)2CO3 前驱体合成的,该前驱体经过热分解和煅烧,释放出 CO2 和 H2O 气体物种。原位高温相阐释证实,LiMn1.5Ni0.5O4 阴极的无序相程度最低,没有岩盐杂质相,且 Mn3+ 含量极低,具有稳定的 Fd m 结构。拉曼光谱显示在 590 cm-1 处有一条没有分裂的频带(F2g(3)),这证实了无序相尖晶石化合物的存在。显微分析显示,次生微颗粒和分离的原生纳米颗粒具有表面涂层-导电网络结构。与次生微颗粒相比,原生纳米颗粒的循环伏安图在 4.7 V 处显示出两个氧化还原峰,证实了 Ni2+ 到 Ni3+ 和 Ni3+ 到 Ni4+ 氧化还原过程具有卓越的动力学可逆性。在 20C 放电时,分离的原生纳米粒子在 4.3 V 处显示出放电平电压曲线,并在第 12 个循环和第 1000 个循环中分别输出 100 mAh g-1 和 86 mAh g-1 的高可逆容量,而次生微粒子在第 12 个循环中输出 70 mAh g-1 的容量,并在第 250 个循环中衰减,容量为 5 mAh g-1。研究结果证实,这种高耐久性、无钴、高电压阴极具有很大的应用潜力,能够在锂电池中进行高速放电。
{"title":"In Situ High‐Temperature Phase Elucidation of Secondary Particles and Segregating Nanoparticles with Surface Coating‐Networking Architecture for High‐Voltage Cathode Life at High Rate","authors":"Manikandan Palanisamy, Matthew M. Mench","doi":"10.1002/aenm.202404368","DOIUrl":"https://doi.org/10.1002/aenm.202404368","url":null,"abstract":"Secondary microparticles are synthesized using a Mn<jats:sub>1.5</jats:sub>Ni<jats:sub>0.5</jats:sub>(OH)<jats:sub>2</jats:sub>CO<jats:sub>3</jats:sub> precursor, which undergoes thermal decomposition and calcination, releasing CO<jats:sub>2</jats:sub> and H<jats:sub>2</jats:sub>O gaseous species. In situ high‐temperature phase elucidation confirms the least degree of disordered phase LiMn<jats:sub>1.5</jats:sub>Ni<jats:sub>0.5</jats:sub>O<jats:sub>4</jats:sub> cathode without rock‐salt impurity phase and having insignificant content of Mn<jats:sup>3+</jats:sup> to stable Fd m structure. Raman spectrum shows a band at 590 cm<jats:sup>−1</jats:sup> (F<jats:sub>2g</jats:sub><jats:sup>(3)</jats:sup>) without splitting, confirming spinel compound derived with disordered phase. Microscopic analyses reveal secondary microparticles and segregated primary nanoparticles having surface coating‐conducting network architecture. Cyclic voltammograms of primary nanoparticles show well‐resolved two redox peaks at 4.7 V compared to secondary microparticles, confirming superior kinetic reversibility for Ni<jats:sup>2+</jats:sup> to Ni<jats:sup>3+</jats:sup> and Ni<jats:sup>3+</jats:sup> to Ni<jats:sup>4+</jats:sup> redox process. At 20C discharge, segregated primary nanoparticles exhibit a discharge flat voltage profile at 4.3 V and deliver a high reversible capacity of 100 mAh g<jats:sup>−1</jats:sup> for the 12th cycle and 86 mAh g<jats:sup>−1</jats:sup> for the 1000th cycle, while secondary microparticles deliver 70 mAh g<jats:sup>−1</jats:sup> for 12th cycle and declined its cycle operation at 250th cycle with the capacity of &lt; 5 mAh g<jats:sup>−1</jats:sup>. Results confirm a strong potential for use as a highly durable, cobalt‐free, high‐voltage cathode capable of high‐rate discharge in LIBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"11 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Advanced Energy Materials
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