Electrochemical performance of graphene nanosheets as anode material for lithium-ion batteries

被引：617

作者：

Guo, Peng ^{[1
]}

Song, Huaihe ^{[1
]}

Chen, Xiaohong ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 06期

关键词：

Lithium-ion batteries; Graphene nanosheets; Graphite; Cycle performance; AC impedance; IRREVERSIBLE CAPACITIES; MESOCARBON MICROBEADS; CARBON NANOTUBES; NATURAL GRAPHITE; INSERTION; STORAGE; CELLS;

D O I：

10.1016/j.elecom.2009.04.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Graphene nanosheets (GNSs) were prepared from artificial graphite by oxidation, rapid expansion and ultrasonic treatment. The morphology, structure and electrochemical performance of GNSs as anode material for lithium-ion batteries were systematically investigated by high-resolution transmission electron microscope, scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy and a variety of electrochemical testing techniques. It was found that GNSs exhibited a relatively high reversible capacity of 672 mA h/g and fine cycle performance. The exchange current density of GNSs increased with the growth of cycle numbers exhibiting the peculiar electrochemical performance. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1320 / 1324

页数：5

共 27 条

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