Citation: Xu Guang Gao, Guo Rong Hu, Zhong Dong Peng, Ke Du, Xin Rong Deng. Pure LiFePO₄ with high energy density prepared by water quenching treatment[J]. Chinese Chemical Letters, ;2007, 18(10): 1256-1260. doi: 10.1016/j.cclet.2007.08.017 shu

Pure LiFePO₄ with high energy density prepared by water quenching treatment

School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

Received Date: 21 May 2007

Fund Project: We are grateful for the financial support from the National Natural Science Foundation of China (No.50604018) and from Central South University.

A compound "vacuum firing and water quenching" technique was presented in the synthesis of LiFePO₄ cathode powder. The sample was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube, followed by water quenching at the sintering temperature. The results indicate that using the "fast quenching" treatment can succeed in controlling overgrowth of the grain size of final product and improving its utilization ratio of active material. The sample synthesized by this technique has the high reversible discharge specific capacity and good cyclic electrochemical performance.
- Li-ion battery,
- Cathode material,
- LiFePO₄,
- Water quenching
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