A facile microwave-assisted route to Co(OH)2 and Co3O4 nanosheet for Li-ion battery

被引：43

作者：

Chen, Gen ^{[1
]}

Fu, Engang ^{[2
]}

Zhou, Meng ^{[1
]}

Xu, Yun ^{[1
]}

Fei, Ling ^{[1
]}

Deng, Shuguang ^{[1
]}

Chaitanya, Vimal ^{[1
]}

Wang, Yongqiang ^{[3
]}

Luo, Hongmei ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Chem Engn, Las Cruces, NM 88003 USA

[2] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 578卷

基金：

美国国家科学基金会;

关键词：

Microwave-assisted; Co(OH)(2); Co3O4; Nanosheet; Electrochemical; ELECTROCHEMICAL PERFORMANCE; ORGANIC-SYNTHESIS; COBALT HYDROXIDE; ANODE MATERIAL; LITHIUM; TEMPERATURE; NANOFLAKES; COMPOSITE;

D O I：

10.1016/j.jallcom.2013.06.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A facile microwave-assisted synthetic route has been successfully developed for preparing hexagonal Co(OH)(2) nanosheets with average width of 2 mu m and thickness of 100 nm. Co(OH)(2) can further convert to porous Co3O4 nanosheets via thermal decomposition. Their phases, structures and morphologies were investigated by X-ray diffraction (XRD), atomic force microscopy (AFM), and transmission electron microscopy (TEM). Both Co(OH)(2) and Co3O4 nanosheets can serve as potential candidates for anodes of Li-ion battery. The electrochemical study revealed that Co(OH)(2) and Co3O4 nanosheets delivered a reversible capacity of 600 and 700 mA h g(-1) after 40 cycles, respectively. Cyclic voltammetry (CV) curves also confirmed the relative stability of the as-synthesized electrode materials. This effective microwave-assisted route may be a promising approach for preparing other transition metal hydroxide/oxides for energy applications. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：349 / 354

页数：6

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