DataVXAdvanced Functional MaterialsPaper
journal article·2025-02

Stack Pressure Enhanced Size Threshold of Si Anode Fracture in All‐Solid‐State Batteries

Menglin Li, Dingchuan Xue, Zhaoyu Rong, Ruyue Fang, Bo Wang, Yali Liang, Xuedong Zhang, Qiao Huang, Zhenyu Wang, Lingyun Zhu, Liqiang Zhang, Yongfu Tang, Sulin Zhang, Jianyu Huang

Advanced Functional Materials· Volume 35· Issue 8
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Source abstract

Abstract

Abstract Silicon (Si) has long captured the spotlight as an anode candidate for lithium‐ion batteries (LIBs) due to its exceptionally high theoretical capacity and abundant availability. However, chemomechanical failure of larger‐sized Si has plagued its electrochemical performance. Herein the presence of a stack pressure‐dependent size effect of Si particles in sulfide‐based all‐solid‐state batteries (ASSBs) is unveiled that can be harnessed to overcome the chemomechanical failure of Si. Remarkably, the application of stack pressure, necessary to enhance interface contact and charge transfer in ASSBs, shifts the size threshold from nanometer scale observed in liquid electrolyte batteries to the microscale in ASSBs. The essence of the stack pressure‐dependent size effect is the suppression of the Hoop stress that causes the fracture of Si particles during lithiation by the applied external stress. This revelation offers an effective strategy to optimize the size of Si for the desired electrochemical performance in ASSBs. These findings provide invaluable insights that offer indispensable guidance for mitigating Si anode failure in ASSBs, ultimately advancing the next‐generation high‐performance Si‐based ASSBs.
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Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and Engineering Xiangtan University Xiangtan 411105 China

Department of Engineering Science and Mechanics The Pennsylvania State University University Park PA 16802 USA

Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 P. R. China

State Key Laboratory of Metastable Materials Science and Technology (MMST) Hebei Key Laboratory of Applied Chemistry Yanshan University Qinhuangdao 066004 P. R. China

Guilin Electrical Equipment Scientific Research Institute Co., Ltd. Guilin 541000 China

School of Materials Science & Engineering Anhui University Hefei 230601 P. R. China

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University Tianjin 300071 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Hebei Province

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