Hybrid-ion - A lithium-ion cell based on a sodium insertion material

被引：152

作者：

Barker, J ^{[1
]}

Gover, RKB ^{[1
]}

Burns, P ^{[1
]}

Bryan, AJ ^{[1
]}

机构：

[1] Valence Technol Inc, Gloucester GL54 2QB, England

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2006年 / 9卷 / 04期

关键词：

D O I：

10.1149/1.2168288

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This communication describes the performance characteristics of a graphite/Li+ electrolyte/Na3V2(PO4)(2)F-3 hybrid-ion cell. The properties of this system compare favorably with commercial lithium ion cells. During the initial charging of this cell, sodium ions are extracted from the fluorophosphate while concurrent lithium ion intercalation occurs at the graphite counter electrode. During subsequent cell cycling the cathode reaction is likely based on a mixed Li/Na insertion mechanism. Importantly we find that highly lithiated graphite is electrochemically stable in the presence of Na+ in the electrolyte phase, presumably due to the presence of the carbon passivation layer. (c) 2006 The Electrochemical Society.

引用

页码：A190 / A192

页数：3

共 12 条

[1] A comparative investigation of the Li insertion properties of the novel fluorophosphate phases, NaVPO4FandLiVPO4F [J].