MoO2-graphene nanocomposite as anode material for lithium-ion batteries

被引：127

作者：

Tang, Qiwei ^{[2
]}

Shan, Zhongqiang ^{[2
]}

Wang, Li ^{[1
]}

Qin, Xue ^{[1
]}

机构：

[1] Tianjin Univ, Sch Sci, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2012年 / 79卷

基金：

中国国家自然科学基金;

关键词：

MoO2; nanoparticles; Graphene; Anode material; Nanocomposite; Lithium ion batteries; HIGH-CAPACITY; NEGATIVE-ELECTRODE; GRAPHENE OXIDE; STORAGE; REDUCTION; PERFORMANCE; NANOSHEET; PHASE;

D O I：

10.1016/j.electacta.2012.06.093

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

MoO2-graphene composite was synthesized via a two-step of hydrothermal-calcination method. The morphology and structure of the products were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), X-ray power diffraction (XRD), and Raman spectroscopy. The content of the graphene in MoO2-graphene composite was examined by thermogravimetric (TG)-differential scanning calorimetry (DSC) analysis. The electrochemical performances of the products were examined by Galvanostatical charge-discharge method, cyclic voltammetry, and electrochemical impedance spectroscopy (EIS). When used as anode material for lithium ion batteries, the MoO2-graphene composite shows an enhanced cyclic performance and lithium storage property. The first discharge capacity of the composite can reach 674.4 mAh g(-1) with a reversible capacity of 429.9 mAh g(-1). Significantly, the composite can also deliver a reversible capacity of as high as 1009.9 mAh g(-1) after 60 charge/discharge cycles. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：148 / 153

页数：6

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