储能科学与技术2025，Vol.14Issue(2)：570-582,13.DOI:10.19799/j.cnki.2095-4239.2024.0774
硅基固态电池的界面失效挑战与应对策略
Challenges and strategies for interface failures in silicon-based solid-state batteries
摘要
Abstract
Silicon-based materials are among the most promising anode materials for solid-state batteries owing to their high specific capacity.However,interface failures between silicon-based electrode materials and solid-state electrolytes disrupt ion and electron transport pathways,leading to increased internal impedance,uneven current-density distribution,and eventual degradation of battery capacity and cycle life.This issue presents a major challenge in designing high-energy-density and long-cycle silicon-based solid-state batteries.First,we evaluate the reasons for interface failures between silicon-based materials and solid-state electrolytes,focusing on crystal structures,critical dimensions,and electrochemical sintering.We also discuss the impact of lithium concentration on the electronic conductivity,ionic diffusion coefficient,and Young's modulus of pure silicon materials.Furthermore,we summarize various strategies to address the interface failures,including the application of binders,buffer layers,electrode-material structure design,and particle-size matching between electrode materials and electrolytes.Additionally,we emphasize the potential influence of applying equal and constant stacking pressure on battery performance during the cycling process.This study aims to elucidate the scientific challenges associated with silicon-based material and electrolyte-interface failures in solid-state batteries,resulting in capacity decay and decreased cycle life.Further,this work proposes strategies to address these challenges considering silicon-based material design,electrode material preparation,and electrode-electrolyte matching,thereby guiding further advancements in this field.关键词
硅基固态电池/界面失效/应力错配/堆叠压力Key words
Si-based solid-state battery/interface failure/mismatch strain/stack pressure分类
信息技术与安全科学引用本文复制引用
王钦,张艳岗,梁君飞,王华..硅基固态电池的界面失效挑战与应对策略[J].储能科学与技术,2025,14(2):570-582,13.基金项目
国家重点研发计划政府间国际科技创新合作(2022YFE0126300),山西省科技成果转化引导专项(202304021301032),山西省基础研究计划(202403021211075). （2022YFE0126300）
