硅负极材料的储锂机理与电化学改性进展  

Lithium storage mechanism and progress in electrochemical modification of silicon as anode materials

作　　者：梁初[1] 周罗挺 夏阳[1,2] 黄辉[1,2] 陶新永[1] 甘永平[1] 张文魁[1,2] 

机构地区：[1]浙江工业大学材料科学与工程学院,杭州310014 [2]浙江大学硅材料国家重点实验室,杭州310027

出　　处：《功能材料》2016年第8期8043-8049,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51201151;51172205;201403196);浙江省自然科学基金资助项目(LY13E020010;LR13E020002);浙江省教育厅科研资助项目(Y201432424);浙江大学硅材料国家重点实验室开放基金资助项目(SKL2014-2)

摘　　要：硅作为锂离子电池负极材料具有极高的比容量,被认为是最有应用潜力的下一代锂离子电池负极候选材料。本文系统总结了硅负极材料的电化学储锂特性和储锂机理,分析了硅负极材料存在的主要问题及原因。针对存在的问题,从嵌脱锂过程硅材料粉化调控、稳定固体电解质界面膜(SEI膜)的构建和硅材料导电性调变3方面对硅负极材料的电化学改性进展进行了评述,并指出了硅负极储锂材料今后的研究方向。Silicon is considered as one of the most promising anode materials for the next-generation lithium ionbatteries because of its huge specific capacity for lithium storage. The electrochemical characterization and lithiumstorage mechanism of silicon are systematically summarized in this paper. We also discuss the main problemsin the silicon anode materials and the corresponding reasons for these problems. The recent progress in improvingthe electrochemical properties of silicon is reviewed in terms of controlling pulverization of silicon in thelithiation/delithiation process, constructing the stable solid electrolyte interphase （SEI） layer and enhancing theconductivity of silicon. The future direction for silicon as anode materials for lithium-ion batteries is outlined aswell.

关 键 词：硅负极材料 储锂机理 粉化调控 稳定SEI膜 导电性 

分 类 号：TM911[电气工程—电力电子与电力传动] TQ152[化学工程—电化学工业]