物理化学学报2017，Vol.33Issue(11)：2127-2132,6.DOI:10.3866/PKU.WHXB201705244
磷烯包覆的高性能硅基锂离子电池负极材料
Improving the Performance of Si-based Li-lon Battery Anodes by Utilizing Phosphorene Encapsulation
摘要
Abstract
Si-based anode materials in Li-ion batteries (LIBs) suffer from severe volume expansion/contraction during repetitive discharge/charge,which results in the pulverization of active materials,continuous growth of solid electrolyte interface (SEI) layers,loss of electrical conduction,and,eventually,battery failure.Herein,we present unprecedented low-content phosphorene (single-layer black phosphorus) encapsulation of silicon particles as an effective method for improving the electrochemical performance of Si-based LIB anodes.The incorporation of low phosphorene amounts (1％,mass fraction)into Si anodes effectively suppresses the detrimental effects of volume expansion and SEI growth,preserving the structural integrity of the electrode during cycling and achieving enhanced Coulombic efficiency,capacity retention,and cycling stability for Li-ion storage.Thus,the developed method can also be applied to other battery materials with high energy density exhibiting substantial volume changes.关键词
磷烯/锂离子电池/负极材料/硅Key words
Phosphorene/Li ion battery/Anode materials/Silicon分类
化学化工引用本文复制引用
彭勃,徐耀林,Fokko M.Mulder..磷烯包覆的高性能硅基锂离子电池负极材料[J].物理化学学报,2017,33(11):2127-2132,6.基金项目
This project was supported by Chinese Scholarship Council (CSC) and the “A green Deal in Energy Materials” (ADEM) program.中国留学基金委和荷兰经济事务部绿色能源材料项目资助 （CSC）
