Unitary graphene layer or graphene single crystal
    5.
    发明授权
    Unitary graphene layer or graphene single crystal 有权
    单一石墨烯层或石墨烯单晶

    公开(公告)号:US09533889B2

    公开(公告)日:2017-01-03

    申请号:US13694356

    申请日:2012-11-26

    摘要: A unitary graphene layer or graphene single crystal containing closely packed and chemically bonded parallel graphene planes having an inter-graphene plane spacing of 0.335 to 0.40 nm and an oxygen content of 0.01% to 10% by weight, which unitary graphene layer or graphene single crystal is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C., wherein the average mis-orientation angle between two graphene planes is less than 10 degrees, more typically less than 5 degrees. The molecules in the graphene oxide gel, upon drying and heat-treating, are chemically interconnected and integrated into a unitary graphene entity containing no discrete graphite flake or graphene platelet. This graphene monolith exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface smoothness, surface hardness, and scratch resistance unmatched by any thin-film material of comparable thickness range.

    摘要翻译: 单层石墨烯层或石墨烯单晶,其含有紧密堆积和化学结合的平行石墨烯平面,其石墨烯平面间距为0.335至0.40nm,氧含量为0.01重量%至10重量%,该单一石墨烯层或石墨烯单晶 通过在高于100℃的温度下热处理石墨烯氧化物凝胶获得,其中两个石墨烯平面之间的平均错位取向角小于10度,更典型地小于5度。 石墨烯氧化物凝胶中的分子在干燥和热处理后被化学相互连接并整合成不含离散石墨薄片或石墨烯薄片的单一石墨烯实体。 该石墨烯整体结构具有卓越的导热性,导电性,机械强度,表面平滑度,表面硬度和耐刮擦性,可与任何相当厚度范围的薄膜材料匹配。