葡萄糖为碳源包覆碳对LiFePO_4性能的影响  

The Impact of Glucose as Carbon Source on the Performance of LiFePO_4

作　　者：王守伟[1] 王兵[2] 苏雪花[1] 

机构地区：[1]兰州石化职业技术学院石油化学工程系,甘肃兰州730060 [2]中国石油抚顺石化公司,辽宁抚顺113001

出　　处：《兰州石化职业技术学院学报》2015年第1期14-16,共3页Journal of Lanzhou Petrochemical Polytechnic

基　　金：甘肃省高校基本科研业务费专项资金项目(甘财教[2012]129号);兰州市研政产合作项目(兰财建[2012]151号(2012-2-98));甘科技支撑计划项目(144GKCA035)

摘　　要：当前锂离子电池的的普遍应用,使人们对锂离子电池的正极材料非常关注,而磷酸亚铁锂作为正极材料有很多优点如无毒性,对环境友好,原材料来源丰富,比容量高,循环性能好等,但电子导电率较低和锂离子迁移速率较低的缺点,成为其商业化的难题之一。以葡萄糖为C源对材料进行掺杂及包覆,用XRD、恒流充放电研究了材料的结构和电化学性能。结果表明包覆后的材料的橄榄石型晶体结构不会变化,并且电化学性能有明显的提高。Wide application of lithium ion battery makes people pay more attention to cathode material of lithium - ion batteries. Lithium iron phosphate as the cathode material has many advantages such as non - toxic ability, envi- ronmental friendliness, abundant raw materials sources, high specific capacity, good cycle performance, but there is a disadvantage of low electrorric conductivity, which is also a problem in conducting it commercially. To improve the behavior of olivine LiFeP04, glucose is used as carbon source coating. The results maintain the structure of ol- ire -type phase and the electrochemical is greatly improved.

关 键 词：磷酸亚铁锂 正极材料 葡萄糖碳源 碳包覆 

分 类 号：TM912[电气工程—电力电子与电力传动]