• 专利标题:   Composite material useful for absorbing electromagnetic waves, comprises alpha-lithium ferrous oxide nanocrystals and graphene, where the flaky graphene is used as a substrate, and the nanocrystals are dispersed on graphene.
  • 专利号:   CN104925868-A
  • 发明人:   WU H, YANG X, SUN G
  • 专利权人:   UNIV BEIJING NORMAL SCI PARK CO LTD, UNIV BEIJING NORMAL
  • 国际专利分类:   C01B031/04, C01G049/00, C09K003/00
  • 专利详细信息:   CN104925868-A 23 Sep 2015 C01G-049/00 201602 Pages: 13 Chinese
  • 申请详细信息:   CN104925868-A CN10290018 29 May 2015
  • 优先权号:   CN10290018

▎ 摘  要

NOVELTY - Composite material comprises alpha -lithium ferrous oxide nanocrystals and graphene; where the flaky graphene is used as a substrate, and the alpha -lithium ferrous oxide nanocrystals are dispersed on the graphene. USE - The composite material is useful for absorbing electromagnetic waves (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the composite material, comprising (i) adding the graphite oxide into oleylamine, dispersing to obtain a first dispersion; (ii) adding iron acetylacetonate, lithium hydroxide monohydrate and octadecylamine into the first dispersion, forming a first mixture, under stirring heating the first mixture to a first predetermined temperature, performing first heat treatment, then continuing stirring, heating to a second predetermined temperature, carrying out second heat treatment to obtain a first reaction solution, and quenching the first reaction liquid; (iii) separating the first reaction solution to obtain alpha -lithium ferrous oxide nanocrystal-graphene composite first product, washing the first product, centrifuging and drying.