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 LiFeP4/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.
Graphical Abstract
Keywords
LiFePO4/C, jet milling and classifying, full battery, electrochemical performance.
Publication Date
2017-12-28
Online Available Date
2017-06-08
Revised Date
2017-01-14
Received Date
2016-09-30
Recommended Citation
Xing-liang LIU, Mao-ping YANG, Wei-wei WANG, Yong CAO.
Effects of jet milling and classifying process on the performance of LiFePO4/C in full batteries[J]. Journal of Electrochemistry,
2017
,
23(6): 661-666.
DOI: 10.13208/j.electrochem.160930
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol23/iss6/4
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
