Binder-free Ge-three dimensional graphene electrodes for high-rate capacity Li-ion batteries
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong (China)
A binder-free, high-rate Ge-three dimensional (3D) graphene composite was synthesized by directly depositing Ge film atop 3D graphene grown by microwave plasma chemical vapor deposition on Ni substrate. The Ge-3D graphene structure demonstrates excellent electrochemical performance as a lithium ion battery (LIB) anode with a reversible capacity of 1140 mAh g{sup −1} at 1/3C over 100 cycles and 835 mAh g{sup −1} at 8C after 60 cycles, and significantly a discharge capacity of 186 mAh g{sup −1} was still achieved at 32C. The high capacity and outstanding stability of the Ge-3D graphene composite propose it as a promising electrode in high-performance thin film LIBs.
- OSTI ID:
- 22253698
- Journal Information:
- Applied Physics Letters, Vol. 103, Issue 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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