Iron phosphide as negative electrode material for Na-ion batteries

被引：87
作者：
Zhang, Wanjie [1 ]
Dahbi, Mouad [1 ,2 ]
Amagasa, Shota [1 ]
Yamada, Yasuhiro [1 ]
Komaba, Shinichi [1 ,2 ]
机构：
[1] Tokyo Univ Sci, Shinjuku Ku, Tokyo 1628601, Japan
[2] Kyoto Univ, Elements Strategy Initiat Catalysts & Batteries, Kyoto 6158245, Japan
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2016年 / 69卷
关键词：
Na-ion battery; Negative electrode material; Conversion material; Transition metal phosphide; PROMISING ANODE MATERIAL; SODIUM-ION; HIGH-CAPACITY; LI; GRAPHITE; POLYACRYLATE; PERFORMANCE; STORAGE; MOSSBAUER; COMPOSITE;
D O I：
10.1016/j.elecom.2016.05.005
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Iron phosphides, FeP2 and FeP4, have been synthesized and characterized for the application to non-aqueous Na-ion battery. FeP2 shows no significant electrochemical reactivity in Na-cell. However, FeP4 composite electrode with sodium polyacrylate binder delivers a reversible capacity of 1137 mAh.g(-1) and a Coulombic efficiency of 84.0% during the first cycle under a current density of 89 mA.g(-1). The high capacity is maintained for 30 cycles. Moreover, FeP4 composite electrode presents a good rate capability. Although the sodiation mechanism of FeP4 has not been fully understood, FeP4 is a new promising negative electrode material for Na-ion batteries with both high-power and high-energy densities. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：11 / 14
页数：4
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