• 文献标题:   High-Pressure High-Temperature Synthesis of MoS2/Holey Graphene Hybrids and Their Performance in Li-Ion Batteries
  • 文献类型:   Article
  • 作  者:   STOLYAROVA SG, KANYGIN MA, KOROTEEV VO, SHUBIN YV, SMIRNOV DA, OKOTRUB AV, BULUSHEVA LG
  • 作者关键词:   electrochemical impedance spectroscopy, graphene, mos2, liion batterie, nexafs, xray photoelectron spectroscopy
  • 出版物名称:   PHYSICA STATUS SOLIDI BBASIC SOLID STATE PHYSICS
  • ISSN:   0370-1972 EI 1521-3951
  • 通讯作者地址:   RAS
  • 被引频次:   8
  • DOI:   10.1002/pssb.201700262
  • 出版年:   2018

▎ 摘  要

Hybrids of holey graphene (HG) and MoS2 have been prepared by a treatment of few-layered HG and amorphous MoS3, taken in a weight ratio of approximate to 5 and approximate to 10%, at 100 bar and 600 degrees C under vacuum. A study of the products by electron microscopy, X-ray diffraction, Raman scattering, and X-ray photoelectron spectroscopy has detected coating of graphene stacks by thin MoS2 layers. The near-edge X-ray absorption fine structure spectroscopy has revealed a covalent bonding between MoS2 and HG components. A hybrid with 5wt.% of MoS2 showed a better rate capability for Li-ion intercalation/deintercalation as compared to the isolated HG and a hybrid with a higher MoS2 loading. Owing to the electrochemical impedance spectroscopy measurements, this was attributed to a faster charge transport in the hybrid with the thin MoS2 coating.