A silver hexafluorophosphate additive to propylene carbonate-based electrolytes for lithium-ion batteries

被引：19

作者：

Wu, MS ^{[1
]}

Lin, JC ^{[1
]}

Chiang, PCJ ^{[1
]}

机构：

[1] Ind Technol Res Inst, Mat Res Labs, Hsinchu 310, Taiwan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 07期

关键词：

D O I：

10.1149/1.1739313

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Addition of silver hexafluorophosphate to propylene carbonate (PC)-based electrolyte may suppress the cointercalation and decomposition of PC in mesocarbon microbeads (MCMB). During the first charge/discharge cycle, silver ions are reduced at a potential (2.15 V vs. Li/Li+) higher than that of the PC cointercalation potential (0.75 V vs. Li/Li+) to form a protective film on the MCMB surface, thereby obstructing PC cointercalation. Results show an increasing trend for both reversible capacity and cycle life performance with increasing AgPF6. A satisfactory reversible capacity may be obtained when the silver addition is greater than 5 wt %. (C) 2004 The Electrochemical Society.

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收藏

页码：A206 / A208

页数：3

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