物理学报2011，Vol.60Issue(3)：774-778,5.
锂离子电池LiMn1-xFex PO4(0＜x＜1)正极材料的制备及性能研究
Preparation and characterization of positive materials LiMn1-x Fex PO4 (0 ＜ x ＜ 1) for lithium ion batteries
摘要
Abstract
In this study, a series of phase-pure LiMn1-xFexPO4/C (x = 0.2, 0.4, 0.6) cathode materials were successfully synthesized by solid-state method.The structure, particle size, surface morphology and electrochemical properties of these cathode active materials were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electrochemical model cell and cyclic voltammograms (CV).The results indicated that the different atom ratio of Mn/Fe affected its electrochemical preformance.A lithium battery using LiMn0.6Fe0.4PO4 as the active materials of the positive electrode exhibits a high initial charge capacity and discharge capacity of 141.5 mAh g-1 and 125.7 mAh g-1, respectively, and the initial coulombic efficiency is 88.8％.After 25 cycles, it retains 99.8％ of the initial discharge capacity at 0.2C rate, showing perfect cyclic property.关键词
锂离子电池/固相法/LiMn1-xFexPO4/正极材料Key words
lithium/ solid-state reaction/ LiMn1-xFexPO4/ cathode material引用本文复制引用
彭薇,岳敏,梁奇,胡社军,侯贤华..锂离子电池LiMn1-xFex PO4(0＜x＜1)正极材料的制备及性能研究[J].物理学报,2011,60(3):774-778,5.基金项目
国家自然科学基金(批准号:5077 1046)资助的课题. （批准号:5077 1046）
