Phase-pure β-NiMoO4 yolk-shell spheres for high-performance anode materials in lithium-ion batteries

被引：52

作者：

Ahn, Jee Hyun ^{[1
]}

Park, Gi Dae ^{[1
]}

Kang, Yun Chan ^{[1
]}

Lee, Jong-Heun ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

来源：

ELECTROCHIMICA ACTA | 2015年 / 174卷

基金：

新加坡国家研究基金会;

关键词：

Energy storage materials; Synthesis design; Energy conversion; Nanostructures; Lithium ion batteries; ELECTROCHEMICAL PERFORMANCE; ELECTRODE MATERIALS; FACILE SYNTHESIS; MICROSPHERES; STORAGE; CARBON; INSERTION; POWDERS; COMOO4; NIMOO4;

D O I：

10.1016/j.electacta.2015.05.149

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Phase-pure beta-NiMoO4 yolk-shell spheres for lithium-ion battery anodes were prepared for the first time by one-pot spray pyrolysis, and their electrochemical properties were investigated. The yolk-shell-structured beta-NiMoO4 powders exhibited high initial discharge/charge capacities (1634/1253 mAh g(-1)) at a current density of 1000 mAg(-1). After 200 cycles, these powders exhibited a high discharge capacity of 1292 mAhg(-1), whereas the initial discharge capacity (1341 mAhg(-1)) of the filled structured NiMoO4 powders was dramatically decreased to 479 mA hg(-1). The significant enhancement of the cycling performance of the beta-NiMoO4 powders with ultrafine crystallite size was attributed to the structural stability of the yolk-shell structure. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：102 / 110

页数：9

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