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AssigneesResearch Institute of Tsinghua University in Shenzhen, Haibin Institute of Technology, Shenzhen
InventorsQing MA, Shang GAO, Shishan JI, Renchen LIU, Yan LIU, Zhen WANG
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The invention discloses a graphene composite film modified by single crystal sapphire whiskers as well as a preparation method and application thereof. The graphene composite film provided by the invention comprises graphene and single crystal sapphire whiskers, the single crystal sapphire whiskers and the graphene are dispersed in the graphene composite film, and the content by weight of the graphene is greater than that of the single crystal sapphire whiskers. The graphene composite film can be used to prepare an electrode and applied to lithium ion batteries and capacitors. The graphene composite film has excellent toughness, structural stability and folding resistance as well as excellent electroconductivity and thermoconductivity; and the preparation method thereof is good in reproducibility and low in cost. The electrode has stable structure, low internal resistance, and excellent electroconductivity, thermoconductivity, cycle performance and rate performance during usage as well as charging and discharging.
A graphene composite film modified by single crystal sapphire whiskers, comprising graphene, further comprising single crystal sapphire whiskers, wherein the graphene forms a substrate film layer, the single crystal sapphire whiskers are dispersed in the substrate film layer, and the content by weight of the graphene is greater than that of the single crystal sapphire whiskers.
A preparation method of a graphene composite film modified by single crystal sapphire whiskers, comprising the following steps:
Dependencies are inferred from the claim text.