Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (2): 573-580.doi: 10.3866/PKU.WHXB201511105

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Synthesis and Electrochemical Properties of Fe2O3/rGO Nanocomposites as Lithium and Sodium Storage Materials

Ting LI*(),Zhi-Hui LONG,Dao-Hong ZHANG*()   

  • Received:2015-09-23 Published:2016-01-30
  • Contact: Ting LI,Dao-Hong ZHANG E-mail:liting@mail.scuec.edu.cn;zhangdh27@163.com
  • Supported by:
    the National Natural Science Foundation of China(21403305);"Fundamental Research Funds for the CentralUniversities", South-Central University for Nationalities, China(CZQ14007)

Abstract:

Metal oxides are promising high-capacity anode materials for lithium and sodium-ion batteries because of the reversible multi-electron structural conversion reactions with lithium and sodium ions. In this study, Fe2O3/rGO (reduced graphene oxide) nanocomposites were prepared using graphene oxide sheets and ferric salt as precursors through a one-step solvothermal method. The experimental results demonstrated that the Fe2O3 nanocrystals were uniformly dispersed on the surface of reduced graphene oxide sheets. The nanocomposite anodes show superior charge-discharge performances and cyclability in lithium and sodium ion batteries, indicating that reduced graphene oxide sheets can reduce the charge-transfer resistance and stabilize the structure change during cycling. It suggests a potential feasibility to use these metal oxide nanocomposites as high capacity anode materials for lithium and sodium ion batteries.

Key words: Metal oxide, Electrochemical conversion reaction, Lithium ion battery, Sodium ion battery, Anode material

MSC2000: 

  • O646