期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 13, 页码 4613-4618出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14934j
关键词
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资金
- China Scholarship Council (CSC)
- Australian Research Council (ARC) under the ARC Centre of Excellence Program
Paper-like free-standing germanium (Ge) and single-walled carbon nanotube (SWCNT) composite anodes were synthesized by the vacuum filtration of Ge/SWCNT composites, which were prepared by a facile aqueous-based method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Electrochemical measurements demonstrate that the Ge/SWCNT composite paper anode with the weight percentage of 32% Ge delivered a specific discharge capacity of 417 mA h g(-1) after 40 cycles at a current density of 25 mA g(-1), 117% higher than the pure SWCNT paper anode. The SWCNTs not only function as a flexible mechanical support for strain release, but also provide excellent electrically conducting channels, while the nanosized Ge particles contribute to improving the discharge capacity of the paper anode.
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