Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 17, Pages 8455-8461Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm16315b
Keywords
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Funding
- MOE (Singapore) [RG 31/08]
- Singapore Ministry of Education [MOE2010-T2-1-017]
- A*STAR SERC [1021700144]
- [NRF2009EWT-CERP001-026]
- [MPA 23/04.15.03 RDP 009/10/102]
- [MPA 23/04.15.03 RDP 020/10/113]
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We report a facile method to prepare nanoarchitectured metal oxides/graphene hybrids as both positive and negative electrodes for Li-ion batteries. The metal oxides/graphene hybrids were synthesized by deposition of metal oxides and exfoliation of graphene sheets in a one-step electrochemical process. The hybrid electrodes showed high specific capacities with excellent cycling stability. For example, the Fe2O3/graphene anode was able to deliver a discharge capacity of up to 894 mA h g(-1) during the 50th cycle at 0.3 C. Co3O4/graphene depicted a discharge capacity of 880 mA h g(-1) during the 40th cycle at 0.3 C. The V2O5/graphene cathode delivered a discharge capacity of 208 mA h g(-1) during the 100th cycle at 6.8 C.
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