硅酸盐学报2013，Vol.41Issue(1)：19-23,5.DOI:10.7521/j.issn.0454-5648.2013.01.04
吡咯量对原位聚合控制结晶法制备LiFePO4/C正极材料的影响
Effect of Pyrrole Additive on Structure and Properties of LiFePO4/C Cathode Materials Prepared by in situ Polymerization Restriction Method
摘要
Abstract
Nano-sized LiFePCVC cathode materials were synthesized with mesoporous FePCVPPy precursor prepared by in-situ polymerization restriction method. Effect of pyrrole additive on the structure, morphology and electrochemical properties of LiFePCVC samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, gal-vanostatic charge-discharge tests and electrochemical impedance spectroscopy (EIS), respectively. The results show that LiFePO4/C and FePO4/PPy have the similar morphology and pyrrole additive affect the electrochemical properties of LiFePO4/C. The LiFePO4/C samples synthesized at a pyrrole addition of 1.0 mL had the smaller particles with the uniform particle size distribution and superior electrochemical properties. The initial discharge capacity of the sample was 149.0mA·h/g in the voltage window range of 2.5—4.1 V at 0.1C rate and the capacity retention was superior.关键词
正极材料/磷酸铁锂/锂离子电池/控制结晶法/聚吡咯Key words
cathode material/ lithium iron phosphate/ lithium ion battery/ restriction method/ polypyrrole分类
信息技术与安全科学引用本文复制引用
罗国恩,刘伟健,禹筱元..吡咯量对原位聚合控制结晶法制备LiFePO4/C正极材料的影响[J].硅酸盐学报,2013,41(1):19-23,5.基金项目
广东省科技计划项目(2009B010900025) （2009B010900025）
中国科学院可再生能源与天然气水合物重点实验室开放基金(Y007K2) （Y007K2）
华南农业大学"211工程"三期重点建设项目(2009B010100001) （2009B010100001）
华南农业大学新学科扶持基金(K09140). （K09140）
