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A simple route to preparing γ-Fe₂O₃/RGO composite electrode materials for lithium ion batteries
- Xu, Binghui, Guan, Xianggang, Zhang, Lian Ying, Liu, Xiaowei, Jiao, Zhengbo, Liu, Xuehua, Hu, Xiaoqi, Zhao, X. S.
- Journal of materials chemistry 2018 v.6 no.9 pp. 4048-4054
- anodes, chemistry, composite materials, cost effectiveness, ferric oxide, graphene oxide, iron, lithium batteries, nanoparticles
- A simple approach to synthesizing γ-Fe₂O₃ nanoparticles encapsulated by reduced graphene oxide (RGO) sheets is demonstrated for the first time. It was found that iron metal can substantially reduce few-layer graphene oxide (GO) to form reduced graphene oxide (RGO) in GO aqueous suspension under ambient conditions, and in the meantime be oxidized to form γ-Fe₂O₃ nanoparticles dispersed on the surface of RGO sheets. The γ-Fe₂O₃/RGO composite delivered both stable cycling performance and good rate capability when used as an anode in a lithium-ion battery cell. This novel experimental method for synthesizing γ-Fe₂O₃/RGO composite materials is cost-effective, eco-friendly and suitable for synthesizing other metal oxide/RGO composite materials.