• 文献标题:   Hollow -MnS Spheres and Their Hybrids with Reduced Graphene Oxide: Synthesis, Microwave Absorption, and Lithium Storage Properties
  • 文献类型:   Article
  • 作  者:   CHEN DZ, QUAN HY, WANG GS, GUO L
  • 作者关键词:   graphene, lithiumion batterie, manganese, microwave absorption, solvothermal method
  • 出版物名称:   CHEMPLUSCHEM
  • ISSN:   2192-6506
  • 通讯作者地址:   Beihang Univ
  • 被引频次:   62
  • DOI:   10.1002/cplu.201300141
  • 出版年:   2013

▎ 摘  要

Novel -MnS hollow spheres (MHSs) have been fabricated successfully by a one-pot template-free solvothermal method. The as-synthesized -MnS spheres have diameters of about 3-5m and porous shells of thickness about 0.5m composed of numerous nanocrystals. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption. Time-dependent morphology evolution suggested that transformation of chemical components and Ostwald ripening play vital roles for these hollow structures with a porous shell. The possible formation mechanism for the fabrication of MHSs is proposed. Meanwhile, MHS-reduced graphene oxide (RGO) hybrids have been prepared in the presence of graphene oxide (GO) by using the same procedure. The amount of GO can affect the morphology of -MnS crystals in hybrids. The microwave absorption and lithium storage properties of the pure MHSs and MHS-RGO hybrids were studied in detail. Compared with pristine MHSs, the MHS-RGO hybrids possess remarkably enhanced microwave absorption and lithium storage properties. The enhanced microwave absorbing and electrochemical properties are also explained.