电子元件与材料2025，Vol.44Issue(7)：767-773,7.DOI:10.14106/j.cnki.1001-2028.2025.0120
硅-钛酸锂复合薄膜阳极制备及电化学性能研究
Preparation and electrochemical properties of silicon-lithium titanate composite film anode
摘要
Abstract
The silicon thin-film anode has attracted considerable attention due to its advantageous properties,including high specific capacity and low lithiation voltage.However,during the initial charge-discharge cycles,the silicon material experiences severe volume expansion,which has a detrimental effect on its volume stability.Concurrently,the formation of the solid electrolyte interface(SEI)film consumes lithium ions,resulting in low initial Coulombic efficiency.In this study,a composite thin-film anode with an amorphous phase was successfully fabricated by means of magnetron co-sputtering technology.The results indicate that by modifying the silicon-based thin film using the radio-frequency co-sputtering process,the structural stability and initial Coulombic efficiency of the composite thin-film anode were effectively enhanced.The lithium titanosilicate composite thin film displays remarkable electrochemical performance,with a reversible capacity of up to 753.3 mAh/g and an initial Coulombic efficiency of 83.6％.After undergoing 150 cycles at a current density of 420 mA/g,the capacity retention rate was found to be 91.11％,with a reversible capacity of 686.3 mAh/g.These findings provide a new way for the application of silicon-based composite thin films in lithium-metal batteries.关键词
复合薄膜阳极/体积稳定性/库伦效率/锂离子电池/磁控共溅射Key words
composite film anode/volume stability/coulombic efficiency/lithium-ion battery/magnetron co-sputtering分类
信息技术与安全科学引用本文复制引用
郑文育,朱归胜,徐华蕊,蒋坤朋,赵昀云..硅-钛酸锂复合薄膜阳极制备及电化学性能研究[J].电子元件与材料,2025,44(7):767-773,7.基金项目
广西科技基地和人才专项(桂科AD23023013) （桂科AD23023013）
桂林市科学研究与技术开发计划项目(20220120-1) （20220120-1）
