溶胶-凝胶法制备LiFePO4/C及其电化学性能

被引:5
作者
李华成 [1 ]
钟胜奎 [1 ,2 ]
李普良 [1 ]
厉冯鹏 [2 ]
王春飞 [1 ]
陈南雄 [1 ]
机构
[1] 中信大锰矿业有限责任公司
[2] 苏州大学沙钢钢铁学院
关键词
锂离子电池; 正极材料; 磷酸铁锂; 溶胶-凝胶法; 电化学性能;
D O I
暂无
中图分类号
TM912.9 [各种材料蓄电池];
学科分类号
摘要
以硝酸铁、磷酸二氢铵、氢氧化锂为原料,以聚乙二醇PEG-4000为螯合剂和碳源,采用溶胶-凝胶法制备了LiFePO4/C。利用XRD、SEM、电化学性能测试等手段对LiFePO4/C的物相结构、形貌、电化学性能进行表征。结果表明:PEG-4000作为螯合剂和碳源,使得样品的粒径较小且分布均匀。650℃烧结18h所合成的样品具有最佳的电化学性能,0.1C首次充、放电容量分别为152.7、150.6 mAh/g;循环30次后容量为146 mAh/g,容量衰减率为3.05%。
引用
收藏
页码:103 / 106
页数:4
相关论文
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