• 文献标题:   Porous graphene anchored with Sb/SbOx as sodium-ion battery anode with enhanced reversible capacity and cycle performance
  • 文献类型:   Article
  • 作  者:   WANG GZ, FENG JM, DONG L, LI XF, LI DJ
  • 作者关键词:   sodiumion battery, antimony, graphene, electrochemical performance
  • 出版物名称:   JOURNAL OF ALLOYS COMPOUNDS
  • ISSN:   0925-8388 EI 1873-4669
  • 通讯作者地址:   Tianjin Normal Univ
  • 被引频次:   20
  • DOI:   10.1016/j.jallcom.2016.09.150
  • 出版年:   2017

▎ 摘  要

Nanocomposites of porous graphene anchored with Sb/SbOx nanoparticles were synthesized through a two-step wet chemical process. SbOx/graphene was initially prepared by refluxing SbCl3 and graphene oxide in benzyl alcohol. Subsequently, the SbOx nanoparticles were partially reduced by NaBH4. The nanocomposites exhibited an enhanced performance for sodium-ion battery with a stable sodium-ion storage capacity of 311.6 mAh g(-1) at 50 mA g(-1) after 100 cycles and a rate capability of 205.6 mAh g(-1) at 800 mA g(-1). Reduction of SbOx by adding moderate amount of NaBH4 was conducive in improving the nanocomposite's electrochemical performance. The sodium-ion storage capacity of Sb/SbOx/graphene material was 1.4 times higher than that of SbOx/graphene without NaBH4 and 6.2 times higher than that of Sb/graphene with excessive amount of NaBH4. (C) 2016 Elsevier B.V. All rights reserved.