Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4851955
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Funding
- National Natural Science Foundation of China (NSFC) [61176007]
- Research Grants Council of the Hong Kong Special Administrative Region, China [CityU 102010]
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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(-1) at 1/3C over 100 cycles and 835 mAh g(-1) at 8C after 60 cycles, and significantly a discharge capacity of 186 mAh g(-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. (C) 2013 AIP Publishing LLC.
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