• 文献标题:   Nano-sized FeSe2 anchored on reduced graphene oxide as a promising anode material for lithium-ion and sodium-ion batteries
  • 文献类型:   Article
  • 作  者:   KONG FJ, LV LZ, GU Y, TAO S, JIANG XF, QIAN B, GAO L
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCE
  • ISSN:   0022-2461 EI 1573-4803
  • 通讯作者地址:   Changshu Inst Technol
  • 被引频次:   14
  • DOI:   10.1007/s10853-018-3143-1
  • 出版年:   2019

▎ 摘  要

High-performance transition metal selenides are considered as promising electrode materials in alkali-ion batteries. However, the poor conductivity limits their further application. Herein, FeSe2 nanoparticles anchored on reduced graphene oxide (FeSe2@rGO) hybrid composites are prepared by a simple hydrothermal method and designed as promising anodes for lithium/sodium-ion batteries. The as-prepared FeSe2@rGO hybrids exhibit superior electrochemical performance with large reversible capacity and excellent cycling stability. In particular, the FeSe2@rGO electrodes deliver a specific capacity of 945.8mAhg(-1) for LIBs and a reversible capacity of 468.8mAhg(-1) for SIBs after 100 cycles at a current density of 100mAg(-1). Besides, the FeSe2@rGO electrodes demonstrate impressed rate capability and high ion diffusion coefficient. The results could enrich electrode materials synthesis methodologies and understand the complex charge-discharge process of metal selenides for next-generation batteries.