高温固相法条件对自制LiFePO_4/C性能的影响  

Performance of conditions of high temperature solid-phase method for homemade LiFePO_4/C

作　　者：伍丽萍 黄同林 李海港 田泽由 王建峰 

机构地区：[1]江西省工业安全工程技术研究中心,江西南昌330030 [2]江西省安全生产科学技术研究中心,江西南昌330030 [3]江西省化学工业设计院,江西南昌330030

出　　处：《电源技术》2014年第11期2029-2032,共4页Chinese Journal of Power Sources

摘　　要：采用以七水合硫酸亚铁(FeSO4·7H2O)为铁源,磷酸(H3PO4)为磷源,以改进的均相沉淀法制备的超细(纳米)FePO4为前驱体,讨论了高温固相碳热还原法的煅烧温度和C添加量对锂电池正极材料LiFe PO4形貌和电化学性能的影响。实验结果表明,当煅烧温度为800℃,C添加量为每摩尔FePO432 g葡萄糖,制得的LiFePO4/C的性能较好。The homemade FePO4, prepared by a reasonable improvement on traditional homogeneous precipitation method, was used as precursor, FeSO4·7H2O as the iron source, H3PO4 as phosphorus source. The calcined temperature and the amount of added C of high-temperature solid-phase carbon thermal reduction method for lithium batteries morphology and electrochemical properties were mainly discussed. The results show that when the calcination temperature is 800℃, C dosage is 32 g glucose per mole FePO4, the prepared LiFePO4/C obtains better performance.

关 键 词：高温固相碳热还原法 FEPO4 煅烧温度 C添加量 LIFEPO4/C 

分 类 号：TM912.9[电气工程—电力电子与电力传动]