中南大学学报（自然科学版）2011，Vol.42Issue(7)：1942-1946,5.
核/壳纳米LiFePO4/C正极材料的制备及其性能
Synthesis and characterization of core-shell nano-LiFePO4/C cathode material
摘要
Abstract
FePO4/Ppy nano-precursor was prepared by an in situ polymerization restriction method to form a polypyrrole shell on the surface of FePO4, using Fe3+ as both precipitator and oxidant. LiFePO4/C cathode material for lithium ion battery was synthesized using FePC4/Ppy as ferrous source, and glucose as carbon source. The structure, morphology and electrochemical properties of LiFePO4/C were characterized by X-ray diffraction (XRD), scanning electronic morphology (SEM), transmission electronic morphology (TEM), Raman spectroscopy measurements, galvanostatic charge-discharge tests and cyclic voltammetry(CV). The results show that the polypyrrole shell of FePO4 can effectively restrict the crystallite growth of LiFePO4 particles and obtain core-shell nano-LiFePO4/C cathode material. The electrochemical test results show that the LiFePO4/C cathode material delivers an initial discharge capacity of 149, 143, 133 and 129 mA·h/g at 0.1C, 0.2C, 0.5C and 1.0C, respectively, and has an excellent cycle performance.关键词
锂离子电池/正极材料/LiFePO4/纳米材料/控制结晶法Key words
Li-ion battery/cathode material/LiFePOj/nano-material/restriction method分类
信息技术与安全科学引用本文复制引用
罗国恩,余仕禧,部丹,肖建材,禹筱元..核/壳纳米LiFePO4/C正极材料的制备及其性能[J].中南大学学报（自然科学版）,2011,42(7):1942-1946,5.基金项目
广东省自然科学基金资助项目(9151064201000039) （9151064201000039）
广东省科技计划项目(2009B010900025) （2009B010900025）
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资助项目(K09140) （K09140）
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资助项目(Y007K2) （Y007K2）
