High Voltage Performances of Li2NiPO4F Cathode with Dinitrile-Based Electrolytes

被引：128

作者：

Nagahama, Masatoshi ^{[1
]}

Hasegawa, Norifumi ^{[1
]}

Okada, Shigeto ^{[1
]}

机构：

[1] Equos Res Co Ltd, Atsubetsu Ku, Sapporo, Hokkaido 0040015, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 06期

关键词：

LI-ION BATTERIES; SECONDARY BATTERIES; LITHIUM BATTERIES; LI2FESIO4;

D O I：

10.1149/1.3417068

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A sebaconitrile-based electrolyte, 1 M LiBF4/ethylene carbonate-dimethyl carbonate-sebaconitrile (25:25:50 by vol%) exhibits excellent electrochemical stability above 6 V against Li/Li+. To confirm that the electrolyte can work at high voltages, LiFePO4 was intentionally charged at 6 V vs Li/Li+. After the 6 V charging, the discharge capacity was 137 mAh/g and the coulomb efficiency was 91%. In addition, this oxidation resistant electrolyte was able to prove that Li2NiPO4F has actually ca. 5.3 V redox potential against Li anode through cyclic voltammetry and charge/discharge cycle test. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3417068] All rights reserved.

引用

页码：A748 / A752

页数：5

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