Electrochemical properties of Mo-doped LiFePO4 cathode material

被引：17

作者：

Chen Yu ^{[1
]}

Wang Zhong-Li ^{[1
]}

Yu Chun-Yang ^{[1
,2
]}

Xia Ding-Guo ^{[1
]}

Wu Zi-Yu ^{[3
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China

[2] Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2008年 / 24卷 / 08期

关键词：

LiFePO4; solid-state reaction; doping-ion; electronic conductivity;

D O I：

10.3866/PKU.WHXB20080829

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：

Mo-doped LiFePO4 was prepared using (NH4)(6)Mo7O24 center dot 4H(2)O as doping starting material by solid state method under N-2 atmosphere. The Mo-doped LiFePO4 samples were characterized by X-ray diffraction, scanning electron microscope. X-ray photoelectron spectrum, extended X-ray absorption fine structure, positron annihilation technique, and electrochemical performance testing at different discharge rates. The results showed that Mo-doped LiFePO4 preserved pure olivine structure. Mo6+ occupied Fe site and Li site simultaneously and the electronic conductivity of LiFePO4 increased. The Mo-doped LiFePO4 had a reversible capacity 141 mAh center dot g(-1) at 1C discharge rate, and showed good electrochemical properties.

引用

页码：1498 / 1502

页数：5

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