材料科学与工程学报2017，Vol.35Issue(5)：689-694,789,7.DOI:10.14136/j.cnki.issn 1673-2812.2017.05.001
K2CO3添加对提高Si/C负极电化学性能的作用
Enhanced Electrochemical Performance of Si/C Anodes for Lithium-ion Batteries by Addition of K2CO3
摘要
Abstract
Effect and mechanism of the addition of K2CO3 in Si/C anodes for lithium-ion batteries on the improvement of electrochemical properties are investigated.Effects of the contents of K2CO3 on the electrochemical performance of Si/C anodes are investigated by galvanostatical charge and discharge test and by electrochemical impedance spectroscopy (EIS).Structure and composition changes of the Si/C electrodes during cycling are analyzed by scanning electronic microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR).Results show that the cycling stability and high-rate capability of the Si/C anode are obviously improved by the addition of K2CO3,which is attributed to the improved stability of the structure of the electrode,the decreased solid electrolyte interface (SEI) resistance and charge transfer resistance of the anode.关键词
K2CO3/Si/C负极/电极结构/电化学性能/锂离子电池Key words
K2CO3/Si/C anode/electrode structure/electrochemical properties/lithium-ion batteries分类
信息技术与安全科学引用本文复制引用
杨素慧,高明霞,潘洪革,刘永锋..K2CO3添加对提高Si/C负极电化学性能的作用[J].材料科学与工程学报,2017,35(5):689-694,789,7.基金项目
浙江省自然科学基金资助项目(LY14E010004) （LY14E010004）
