Li1-xTixFePO4(0≤x≤0.02)制备表征及电化学性能研究

无机盐工业 ›› 2011, Vol. 43 ›› Issue (12): 42-.

Li_1-xTi_xFePO₄(0≤x≤0.02)制备表征及电化学性能研究

郭西凤，许寒，赵庆云，郅晓科，何爱珍，章甦

中海油天津化工研究设计院，天津 300131

发布日期:2011-12-06

Preparation characterization and electrochemical performance [JZ]research on Li_1-xTi_xFePO₄(0≤x≤0.02)

GUO Xi-Feng, XU Han, ZHAO Qing-Yun, ZHI Xiao-Ke, HE Ai-Zhen, ZHANG Su

CNOOC Tianjin Chemical Research & Design Institute，Tianjin 300131，China

Published:2011-12-06

摘要/Abstract

摘要： 采用固相工艺制备了具有锂位掺杂的磷酸铁锂正极材料Li_1-xTi_xFePO₄(0≤x≤0.02),并将该材料与相同条件下制备的LiFePO₄/C材料进行晶体结构、表面形貌、容量性能以及倍率性能比较。通过比较发现，Li_1-xTi_xFePO₄和LiFePO₄/C均具有橄榄石结构，且粒径大小均在2~4 μm。电化学性能测试结果表明，Li_1-xTi_xFePO₄比LiFePO₄/C具有更加优异的容量性能和倍率性能。

关键词: 磷酸亚铁锂, 橄榄石, 放电容量

Abstract: The Li site doped cathod material Li_1-xTi_xFePO₄ (0≤x≤0.02)and LiFePO₄/C were prepared by solid-phase method.Crystal structures,surface morphologies,capacity performance,and rate performance of the two samples were compared.Through the comparison,it was found that both the two kinds of sample had olivine structure,and the particle sizes of them were both at 2~4 μm.By the test of electrochemical performance,the Li_1-xTi_xFePO₄ had better capacity and rate performance than those of LiFePO₄/C.

Key words: LiFePO₄, olivine, discharge capacity

中图分类号:

TM912.9

郭西凤, 许寒, 赵庆云, 郅晓科, 何爱珍, 章甦. Li_1-xTi_xFePO₄(0≤x≤0.02)制备表征及电化学性能研究[J]. 无机盐工业, 2011, 43(12): 42-.

GUO Xi-Feng, XU Han, ZHAO Qing-Yun, ZHI Xiao-Ke, HE Ai-Zhen, ZHANG Su. Preparation characterization and electrochemical performance [JZ]research on Li_1-xTi_xFePO₄(0≤x≤0.02)[J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(12): 42-.

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Li_1-xTi_xFePO₄(0≤x≤0.02)制备表征及电化学性能研究

Preparation characterization and electrochemical performance [JZ]research on Li_1-xTi_xFePO₄(0≤x≤0.02)

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