• 文献标题:   A chemically modified graphene oxide wrapped porous hematite nano-architecture as a high rate lithium-ion battery anode material
  • 文献类型:   Article
  • 作  者:   SUBRAMANIYAM CM, ISLAM MM, AKHTER T, CARDILLO D, KONSTANTINOV K, LIU HK, DOU SX
  • 作者关键词:  
  • 出版物名称:   RSC ADVANCES
  • ISSN:   2046-2069
  • 通讯作者地址:   Univ Wollongong
  • 被引频次:   10
  • DOI:   10.1039/c6ra14626k
  • 出版年:   2016

▎ 摘  要

Successful fabrication of nanoporous metal oxides with carbonaceous nanomaterials can enhance the conductivity of electrodes as well as advance their electrochemical activity to overcome the stress induced during continuous charge-discharge cycling, and this is an effective way to harness their excellent reversible theoretical capacity. Nanoporous hematite (alpha-Fe2O3) nanorods have been prepared through an advanced spray precipitation method and nanofabricated with reduced graphene oxide (rGO) sheets by simply mixing solutions. This approach helps to introduce a continuous conductive network in between the nanorods to enhance ion interactions, giving the composite a promising electrochemical response as a negative electrode for the lithium-ion battery (LIB). The nanocomposites delivered an outstanding reversible capacity of 1330 mA h g(-1) at 100 mA g(-1) for 100 cycles and showed excellent rate retention during cycling at different current densities over long cycle numbers, highlighting the potential of this material with its specially designed nano-architecture as an anode material for high energy LIBs for electric vehicles. Along with the overwhelming electrochemical performance of chemically modified graphene-oxide-wrapped hematite porous nanorods (alpha-Fe2O3/rGO), the abundance of the hematite source, and the advanced and environmentally friendly synthesis approach show the potential for large-scale preparation of such electrode materials for real world application.