应用化学2011，Vol.28Issue(7)：821-825,5.DOI:10.3724/SP.J.1095.2011.00522
表面包覆保护的离子电池新型正极材料LiFeBO3电化学性能
The Electrochemical Performance of Surface Protected LiFeBO3 Cathode Materials for Li-ion Batteries
摘要
Abstract
The IiFeBO3 cathode materials for Li-ion batteries were prepared by means of solid reaction using lithium metaborate and ferrous oxalate as raw materials. The LiFeBO3 cathode materials were further coated by ethylene propylene copolymer( EPM). The samples were characterized by X-ray diffraction, scanning electron microscopy, and titration analysis. Electrochemical tests of materials showed that LiFeBO3 exhibited a higher discharge mass specific capacity. The electrochemical performance of the coated samples was demonstrated to be improved. Sample coated with 5% EPM had an initial capacity of 190 mA·h/g. It was found that only 4. 2% capacity was lost after 50 charge/discharge cyclings at 0. 5C.关键词
动力锂离子电池/正极材料/硼酸铁锂Key words
lithium ion batteries/cathode materials/lithium iron borate分类
化学化工引用本文复制引用
王洪,杨驰,郭春泰,王大兴,孙礼安..表面包覆保护的离子电池新型正极材料LiFeBO3电化学性能[J].应用化学,2011,28(7):821-825,5.基金项目
四川省教育厅资助项目(09ZC021),绵阳市科技局资助项目(09Y002-3) （09ZC021）
