软模板剂对LiFePO_4/C正极材料性能的影响  

Effects of soft template on the performance of LiFePO_4/C cathode material

作　　者：杨书廷[1] 刘玉霞[1] 尹艳红[1] 王辉[1] 

机构地区：[1]河南师范大学化学与环境科学学院

出　　处：《电池》2007年第2期95-97,共3页Battery Bimonthly

基　　金：河南省重大科技攻关项目(0522020300);新乡市科技攻关项目(05G090);新乡市科技发展计划项目(06G103)

摘　　要：采用软模板-固相合成法合成橄榄石型LiFePO4/C正极材料。通过XRD、SEM以及交流阻抗等对材料的晶体结构和电化学性能进行研究,并研究了葡萄糖、丙烯酰胺和乳酸亚铁作为软模板剂对材料性能的影响。结果表明:以葡萄糖为软模板剂合成的LiFePO4/C材料的首次放电比容量高达140.2 mAh/g,循环20次后,放电容量无明显的衰减现象。Olivine LiFePO4/C cathode materials were synthesized by soft template-solid state reaction. The crystal structure and electrochemical performance of the material were studied by XRD, SEM and AC impedance. The effects of soft templates such as dextrose, acrylamide and ferrous lactate, on the performance of the material were studied. The results showed that the initial spe cific discharge capacity of the LiFePO4/C material was 140.2 mAh/g when the dextrose was used as the soft template and the discharge capacity was not faded after 20 cycles.

关 键 词：锂离子电池 正极材料 软模板剂 LIFEPO4/C 

分 类 号：TM912.9[电气工程—电力电子与电力传动]