A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

Wang, J., Wang, J. Z., Sun, Ziqi, Gao, X. W., Zhong, C., Chou, S. L., & Liu, H. K. (2014) A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries. Journal of Materials Chemistry A, 2(13), pp. 4613-4618.

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Abstract

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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12 citations in Web of Science®

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ID Code: 94594
Item Type: Journal Article
Refereed: Yes
DOI: 10.1039/c3ta14934j
ISSN: 2050-7488
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Royal Society of Chemistry
Deposited On: 11 Apr 2016 02:13
Last Modified: 14 Apr 2016 06:19

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