电化学2017，Vol.23Issue(6)：661-666,6.DOI:10.13208/j.electrochem.160930
分级过程对LiFePO4/C电池性能的影响
Effects of Jet Milling and Classifying Process on the Performance of LiFePO4/C in Full Batteries
摘要
Abstract
The carbon coated lithium iron phosphate (LiFePO4/C) composite cathode material was prepared by using iron phosphate process.The effects of jet milling and classifying process on the electrochemical performance of LiFePO4/C cathode material in full batteries were investigted.Scanning electron microscopic analyses suggested that the globose secondary particles were crustily crushed during the jet milling and classifying process,which would further result in lower tap density and carbon content.The LiFePO4/C composite cathode materials with different physical characteristics were further tested in full batteries to evaluate the electrochemical properties.The results showed no obvious differences in capacity,AC resistance,DC resistance and power density.However,the globose LiFePO4/C exhibited far better performances in low temperature discharge capacity retention rate and high temperature cycle retention than that of granulated composite cathode,which probably arisen from the certain delamination and destruction of conductive network during the jet milling and classifying process.关键词
磷酸铁锂/气流粉碎分级/全电池/电化学性能Key words
LiFePO4/C/jet milling and classifying/full battery/electrochemical performance分类
化学化工引用本文复制引用
刘兴亮,杨茂萍,汪伟伟,曹勇..分级过程对LiFePO4/C电池性能的影响[J].电化学,2017,23(6):661-666,6.基金项目
安徽省科技攻关项目(No.1501021011)资助 （No.1501021011）
