碳含量对LiFe_(0.3)Mn_(0.6)Co_(0.1)PO_4/C材料电化学性能的影响  

The effect of carbon content on the electrochemical performance of the LiFe_(0.3)Mn_(0.6)Co_(0.1)PO_4/C

作　　者：耿海龙 吴军[2] 鞠华[3] 李慎范 王振伟 徐艳辉[1,2] 

机构地区：[1]山东齐星新材料科技有限公司,山东邹平256200 [2]苏州大学化学电源研究所,江苏苏州215006 [3]苏州大学城市轨道交通学院,江苏苏州215006

出　　处：《功能材料》2013年第2期191-193,共3页Journal of Functional Materials

基　　金：江苏省自然科学基金资助项目(BK2009110)

摘　　要：详细研究了原材料中蔗糖添加量对LiFe0.3Mn0.6Co0.1PO4/C复合材料电化学性能的影响。成品材料中碳掺杂量过多,会导致碳层锂离子扩散速度减慢,从而限制材料的容量;成品材料中碳含量太少,不仅材料的电子导电性不足,而且颗粒偏大,也不利于电化学性能。研究证实,原材料中最佳蔗糖添加量为8%(质量分数)。In the present work, the effect of sucrose additives on the electrochemical properties ofLiFe0.3Mn0.6Co0.1PO4/Ccomposite material has been studied. Higher carbon content will lead to thicker surface carbon film, which makes the lithium ion diffusion slower, as results, the discharge capacity decreases; lower carbon content leads to worse electronic conductivity and larger particle size, which is not good at the electrode performance. Our results showed that the optimum amount of the added sucrose is about 8wt%.

关 键 词：橄榄石磷酸盐 锂离子电池 含碳量 电化学 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]