Significant Performance Enhancement of Graphene Anode for Li-ion Batteries by Using CVD-Graphene-Film/Cu-Foil Composite Collectors
Abstract
For the first time, CVD-grown graphene film on Cu foil (G/Cu) was used as a composite collector of reduced graphene oxide (rGO) anode for lithium-ion batteries. Significant performance enhancement was observed for rGO anode with G/Cu composite collector: i) the first cycle discharge specific capacity of rGO anode with G/Cu composite is as large as 2947 mAh g-1, nearly twice of that (1509 mAh g-1) using conventional Cu foil collector; ii) rGO anode with G/Cu composite shows much better high-rate specific capacity even at 20 C. It suggests that it is promising for G/Cu composite collector to improve the performance of lithium ion batteries.
Keywords
Graphene, Current collecter, Lithium-ion batteries
DOI
10.12783/dteees/icepe2017/11871
10.12783/dteees/icepe2017/11871
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