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    • 9. 发明授权
    • Cathode active material-coated discrete graphene sheets for lithium batteries and process for producing same
    • 用于锂电池的阴极活性材料涂层离散石墨烯片及其制造方法
    • US09203084B2
    • 2015-12-01
    • US13987567
    • 2013-08-08
    • Yanbo WangBor Z JangHui HeAruna Zhamu
    • Yanbo WangBor Z JangHui HeAruna Zhamu
    • H01M4/36H01M4/04H01M4/02H01M10/056
    • H01M4/366H01M4/04H01M4/0421H01M4/13H01M4/139H01M4/625H01M10/056H01M2004/028Y10T156/1075
    • Provided is a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably greater than 80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably greater than 80% and more preferably greater than 90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. Also provided is a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.
    • 提供锂电池的阴极(正极)和制造该阴极的工序。 电极包括阴极活性材料涂覆的石墨烯片,并且石墨烯片具有两个相对的平行表面,其中两个表面中的一个表面的至少50%面积(优选大于80%)涂覆有阴极活性材料涂层。 石墨烯材料的量为0.1重量%至99.5重量%,正极活性物质的量为至少0.5重量%(优选大于80重量%,更优选大于90重量%),均基于 石墨烯材料和阴极活性材料的总重量相结合。 阴极活性材料优选为无机材料,有机或聚合材料,金属氧化物/磷酸盐/硫化物或其组合。 还提供了包括锂离子,锂金属或锂硫电池的锂电池。