Technical optimization of LiFePO4 preparation by water quenching treatment
来源期刊：中南大学学报(英文版)2007年第5期
论文作者：彭忠东 高旭光 胡国荣 谭显艳 杜柯 邓新荣 刘业翔
文章页码：656 - 656
Key words：Li-ion batteries; LiFePO4; cathode material; water quenching
Abstract: A technique of combination of vacuum firing and water quenching was applied to the synthesis of LiFePO4 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 synthetic conditions were optimized by orthogonal experiment. The results indicate that the fast quenching treatment can avoid the overgrowth of single crystal and improve its availability ratio of active material. The sintering temperature has the greatest effect on the electrochemical performance of sample. Next is the molar ratio of Li to Fe and the sintering time, respectively. The samples prepared in the optimized technical condition has the highest reversible discharge specific capacity of 149.8 mA·h/g.
基金信息：the National Natural Science Foundation of China
