Kinetic study on LiFePO4-positive electrode material of lithium-ion battery

被引：47

作者：

Zhu, Yan-Rong ^{[1
]}

Xie, Ying ^{[2
]}

Zhu, Rong-Sun ^{[1
]}

Shu, Jie ^{[3
]}

Jiang, Li-Juan ^{[1
]}

Qiao, Hong-Bin ^{[1
]}

Yi, Ting-Feng ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Chem & Chem Engn, Maanshan 243002, Anhui, Peoples R China

[2] Heilongjiang Univ, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150080, Peoples R China

[3] Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China

来源：

IONICS | 2011年 / 17卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Positive electrode material; LiFePO4; Kinetics; Electrochemical impedance spectroscopy; Lithium-ion battery; TITRATION TECHNIQUE CITT; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; DIFFUSION-COEFFICIENT; ASSISTED SYNTHESIS; LIFEPO4; PERFORMANCE; LICOO2; TEMPERATURE; DEPOSITION;

D O I：

10.1007/s11581-011-0523-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

LiFePO4-positive electrode material was successfully synthesized by a solid-state method, and the effect of storage temperatures on kinetics of lithium-ion insertion for LiFePO4-positive electrode material was investigated by electrochemical impedance spectroscopy. The charge-transfer resistance of LiFePO4 electrode decreases with increasing the storage temperatures. This suggests that it has a high electrochemical activity at high temperature. The diffusion coefficient of lithium ion is greatly increased with increasing the storage temperatures, indicating that the kinetics of Li+ and electron transfer into the electrodes were much fast at high storage temperature.

引用

页码：437 / 441

页数：5

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