Synthesis of sub-micrometer lithium iron phosphate particles using supercritical hydrothermal method for lithium ion batteries
In the present study,sub-micrometer LiFePO4 particles with high purity and crystallinity were synthesized using supercritical hydrothermal method as the cathode material for lithium ion batteries.Experimental results show that templates and calcination time have significant impacts on the purity,particle size and morphology of LiFePO4 particles.The as-prepared LiFePO4 particles using polyvinyl pyrrolidone (PVP) template with additional one hour calcination at 700 oC exhibit good crystallinity,uniform size distribution,high capacity and cycling performance.The specific discharge capacities of 141.2 and 114.0 mAh/g were obtained at 0.1 and 1.0 C,respectively.It retained 96.0% of an initial capacity after 100 cycles at 1.0 C rate.The good electrochemical performance of the as-synthesized material is attributed to the synergistic factors of its reasonable particle size and surface areas and high crystallinity.
LiFePO4 sub-micrometer supercritical hydrothermal synthesis template
Liu Xuewu Wei Hao Deng Yuanfu Shi Zhicong Chen Guohua
School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China; Center for Gree School of Chemical Machinery, Dalian University of Technology, Dalian 116024, China Center for Green Products and Processing Technologies, Guangzhou HKUST Fok Ying Tung Research Instit Center for Green Products and Processing Technologies, Guangzhou HKUST Fok Ying Tung Research Instit
国际会议
上海
英文
88-88
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）