期刊
MATERIALS RESEARCH BULLETIN
卷 47, 期 7, 页码 1693-1696出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.03.034
关键词
Nanostructures; Chemical synthesis; X-ray diffraction; Electron microscopy; Electrochemical properties
资金
- Agency for Science, Technology and Research of Singapore [R-265-000-292-305 (072 134 0051)]
Copper metagermanate (CuGeO3) nanorods were synthesized through a low temperature hydrothermal method at 180 degrees C. The as-synthesized CuGeO3 nanorods show a well crystallined nanostructure with diameters in the range from 40 to 70 nm, and a length from 250 to 350 nm. Electrochemical measurements demonstrate that the CuGeO3 nanorods exhibit a first charge capacity of 924 mAh g(-1) and 690 mAh g(-1) after 50 cycles, which is remarkably improved than the pure nanosize GeO2 electrode. This investigation indicates that CuGeO3 nanorods could be utilized as a high capacity anode material in lithium-ion batteries by reducing particle size and metal oxide addition. The lithium storage mechanisms for the improved capacity retention were also studied. (C) 2012 Elsevier Ltd. All rights reserved.
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