{"title":"Mechanistic Insights Into Entropy Regulation in Sodium/Potassium‐Ion Batteries","authors":"Rufeng Ye,Junlong Zheng,Yanhong Feng,Qinjian Ou,Yanyan Meng,Xinze Zhang,Zhengyang Qin,Yang Luo,Longchao Zhuo,Xijun Liu","doi":"10.1002/aenm.71489","DOIUrl":"https://doi.org/10.1002/aenm.71489","url":null,"abstract":"ABSTRACT Sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs) have emerged as significant contenders for large‐scale energy storage technology due to their substantial resource reserves and cost effectiveness. However, their large‐scale development is hindered by several key challenges, including the structural degradation of electrode materials during cycling, slow kinetics, and instability at the electrode–electrolyte interface. Entropy‐regulation strategies, particularly medium‐to‐high‐entropy designs, represent an emerging paradigm in materials design. The integration of multiple components, with the aim of leveraging their synergistic effects, presents a novel approach to address the aforementioned challenges in a systematic manner. It has been demonstrated that, owing to its elevated configurational entropy, this strategy accomplishes two objectives: first, it provides thermodynamic stabilization of the crystal structure, and second, it suppresses undesirable phase transitions. Additionally, it induces kinetic effects that result in slow diffusion, thereby effectively delaying element migration and side reactions. Concurrently, entropy regulation fosters the establishment of a stable interfacial film at the electrode‐electrolyte interface, thereby enhancing interfacial ionic transport efficiency and chemical stability. This paper systematically reviews the mechanistic insights and research progress of entropy‐regulation strategies in cathode materials, anode materials, and interface engineering for SIBs and PIBs, and outlines future directions for this field.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"164 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895805","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}
Quanzhi Lin,Senlin Liao,Weixian Wang,Qi Zeng,Yajie Yang
{"title":"Interface Engineering via Ceria Coating Reconciles Ion Transport and Lithium Compatibility in Composite Polymer Electrolytes","authors":"Quanzhi Lin,Senlin Liao,Weixian Wang,Qi Zeng,Yajie Yang","doi":"10.1002/aenm.71551","DOIUrl":"https://doi.org/10.1002/aenm.71551","url":null,"abstract":"ABSTRACT Composite polymer electrolytes (CPEs) exhibit considerable potential for solid−state lithium−metal batteries (SLBs). However, incompatibilities between the various components in the electrolyte continue to hinder the full realization of its performance and practical applications. In this work, a multifunctional ceria interfacial layer is proposed to achieve uniform dispersion of ceramic fillers and facilitated interfacial transport of lithium ions in CPEs. At the same time, the physical barrier provided by this multifunctional interface layer prevents direct contact between the ceramic filler and the lithium metal, thereby avoiding potentially harmful side reactions that could further lead to a performance deterioration in battery cycling. Owing to the introduction of this multifunctional interface layer, the CPE exhibits high ionic conductivity (0.772 mS cm −1 ) and Li–ion transference number (0.626), with a wide electrochemical window (5.03 V). Furthermore, the Li|CPE|Li symmetric cell exhibits a lithium deposition/stripping capacity exceeding 1500 h at room temperature, indicating the CPE's excellent ability to suppress interfacial side reactions. Li|CPE|NCM811 cells retained a capacity of 77% after 350 cycles, whilst pouch cells retained 76% after 300 stable cycles at room temperature and 0.5 C. The method of optimizing ceramic fillers offers new insights into the design of novel composite solid–state electrolytes for SLBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"164 3 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895807","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}
Young Hwa Yun,Bonjae Koo,Kihyun Shin,Byeong‐Seon An,Seohee Jang,Noh‐Moon Lee,Sechan Lee,Gi Hong Jung,Youngtae Park,HyeongJung Park,MinJoong Kim,Hyun‐Seok Cho,Hyun You Kim,Jong Hyeok Park,Gisu Doo,Changsoo Lee
{"title":"Chemical Ex‐Solution of Bi\u0000 3‐x\u0000 TaO\u0000 7\u0000 Support for Electrical Integration at the Interface With Ir─Bi Alloy Electrocatalysts in Acidic Oxygen Evolution Reaction","authors":"Young Hwa Yun,Bonjae Koo,Kihyun Shin,Byeong‐Seon An,Seohee Jang,Noh‐Moon Lee,Sechan Lee,Gi Hong Jung,Youngtae Park,HyeongJung Park,MinJoong Kim,Hyun‐Seok Cho,Hyun You Kim,Jong Hyeok Park,Gisu Doo,Changsoo Lee","doi":"10.1002/aenm.71544","DOIUrl":"https://doi.org/10.1002/aenm.71544","url":null,"abstract":"ABSTRACT Reducing iridium (Ir) loading while maintaining high activity and durability remains a critical challenge for proton exchange membrane water electrolysis. While oxide‐supported catalysts offer a pathway for Ir reduction, their intrinsic low electronic conductivity and inefficient charge transfer at catalyst‐support interfaces remain imperative bottlenecks. Herein, we report a synergistic interfacial engineering strategy of catalyst‐support based on partial ex‐solution of Bi from a Bi 3 TaO 7 support. Ex‐solved Bi forms highly active Ir─Bi alloy domains while generating a Bi‐deficient support and markedly improving the conductivity of the support. Moreover, this coupled reconstruction lowers the work function of the Ir‐based catalyst while increasing the work function of the support, shifting the catalyst‐support contact from rectifying to ohmic, thereby facilitating efficient electron transport. The resulting IrBi/Bi 3‐x TaO 7 exhibits enhanced half‐cell oxygen evolution reaction activity (248 mV at 10 mA/cm 2 ), mass activity (1077 mA/mg Ir at 1.55 V), and durability (15.8 h). Furthermore, single‐cell measurements achieve outstanding performance of 1.824 V at 2 A/cm 2 with a low Ir loading of 0.38 mg/cm 2 and negligible voltage degradation over 100 h. This work highlights a generalizable strategy for simultaneous electronic integration of catalyst and support, offering new insights into the design of efficient and durable electrocatalysts for PEMWE.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"28 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895806","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}