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Tuning Solid Interfaces via Varying Electrolyte Distributions Enables High-Performance Solid-State Batteries

查看全文 作　　者：Linfeng [1,2]Peng;Chuang [1]Yu;Ziqi [3]Zhang;Ruonan [3]Xu;Mengjun [4]Sun;Long [3]Zhang;Shijie [1]Cheng;Jia [1]Xie 高影响力作者 机构地区：[1]State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430000,China;[2]School of Physics,Huazhong University of Science and Technology,Wuhan 430000,China;[3]Clean Nano Energy Center,State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;[4]School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430000,China高影响力机构 出　　处：《Energy & Environmental Materials》索引2023年第6卷第2期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(No.51821005)。 摘　　要：Solid/solid interface is the major challenge for high-performance solid-state batteries.Solid electrolytes(SEs)play a crucial role in the fabrication of effective interfaces in solid-state batteries.Herein,the electrolyte distribution with varied particle sizes is tuned to construct solid-state batteries with excellent performance at different operating temperatures.Solid-state batteries with the configuration S/L(small-sized SE in composite cathode and large-sized SE in electrolyte layer)show the best performance at room temperature(168 mA h g^(−1) at 0.2 C,retention of 99%,100 cycles)and−20°C(89 mA h g^(−1) at 0.05 C),while the configuration S/S displays better performance at elevated temperature.The superior performance of S/L battery is associated with faster lithium-ion dynamics due to the better solid/solid interface between active materials and electrolytes.Moreover,the inferior performance at 60℃is caused by the formation of voids and cracks in the electrolyte layer during cycling.In contrast,the S/S battery delivers superior performance at elevated operating temperature because of the integrated structure.This work confirms that tailoring electrolyte size has significant effect on fabricating all-climate solid-state batteries. 关 键 词：electrochemical performance lithium argyrodite operating temperature size distribution solid-state batteries
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