Cathode properties of phospho-olivine LiMPO4 for lithium secondary batteries

被引：348

作者：

Okada, S

Sawa, S

Egashira, M

Yamaki, J

Tabuchi, M

Kageyama, H

Konishi, T

Yoshino, A

机构：

[1] Kyushu Univ, IAMS, Kasuga, Fukuoka 8168580, Japan

[2] AIST, Osaka Natl Res Inst, Ikeda, Osaka 5638577, Japan

[3] Asahi Chem Ind Co Ltd, Fuji, Shizuoka 4168501, Japan

来源：

JOURNAL OF POWER SOURCES | 2001年 / 97-8卷

关键词：

olivine LiMPO4; high-voltage cathode; HRXRF;

D O I：

10.1016/S0378-7753(01)00631-0

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：

Four types of orthorhombic olivine LiMPO4 (M:Co, Fe, NI and Mn) were investigated as high-voltage cathode active materials for Lithium secondary batteries. LiCoPO4 exhibited the highest 4.8 V discharge plateau of 100 mAh/g versus Li/Li+ after initial charging to 5.1 V and its energy density was comparable to that of layered rocksalt LiCoO2 (120 mAh/g x 4V = 480 mWh/g). In contrast, the, open circuit voltage profile of LiFePO4 was 160 mAh/g on the 3 V plateau. The Co2+ state in LiCoPO4 was confirmed using HRXRF. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：430 / 432

页数：3

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