• 文献标题:   One-step synthesis of 3D N-doped graphene supported metal oxide for high performance Li-S battery
  • 文献类型:   Article
  • 作  者:   LI C, SUI XL, WANG ZB, WANG Q, GU DM
  • 作者关键词:   graphene, ndoped, metaloxide, cycle performance
  • 出版物名称:   CERAMICS INTERNATIONAL
  • ISSN:   0272-8842 EI 1873-3956
  • 通讯作者地址:   Harbin Inst Technol
  • 被引频次:   3
  • DOI:   10.1016/j.ceramint.2018.04.044
  • 出版年:   2018

▎ 摘  要

The 3D N-doped graphene supported metal oxide has been synthesized as the sulfur host of Lithium-sulfur battery. A simple method of nanoparticles in-situ grown in aqueous solution is introduced. The SEM images and XRD spectra confirmed that nanoparticles with few tens of nanometers distributed on the surface of graphene sheet. The compound electrode showed an initial specific capacity of 1518 mA h g(-1) at 0.2 C with a sulfur utilization of 90%. During 700 cycles, the capacity decay was only 0.03% per cycle. Even at a high rate of 2 C, the specific capacity can still be achieved 595 mA h g(-1). The visual charge-discharge test showed that the composite electrode had strong adsorption effect on polysulfide vividly.