A novel synthetic route for LiFePO_4/C cathode materials by addition of starch for lithium-ion batteries

查看全文 作　　者：Shao Hua Luo, Zi Long Tang, Jun Biao Lu, Zhong Tai Zhang State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China 出　　处：《Chinese Chemical Letters》索引2007年第18卷第2期,共4页 摘　　要：LiFePO4/Carbon composite cathode material was prepared using starch as carbon source by spray-pelleting and subsequent pyrolysis in N2. The samples were characterized by XRD, SEM, Raman, and their electrochemical performance was investigated in terms of cycling behavior. There has a special micro-morphology via the process, which is favorable to electrochemical properties. The discharge capacity of the LiFePO4.C composite was 170 mAh g-1, equal to the theoretical specific capacity at 0.1 C rate. At 4 C current density, the specific capacity was about 80 mAh g-1, which can satisfy for transportation applications if having a more flat discharge flat. 关 键 词：LITHIUM-ION batteries Cathode material Carbon coated LIFEPO4 Spray-pelleting