发明授权
- 专利标题: Cathode active material-coated discrete graphene sheets for lithium batteries and process for producing same
- 专利标题(中): 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
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申请号: US13987567申请日: 2013-08-08
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公开(公告)号: US09203084B2公开(公告)日: 2015-12-01
- 发明人: Yanbo Wang , Bor Z Jang , Hui He , Aruna Zhamu
- 申请人: Yanbo Wang , Bor Z Jang , Hui He , Aruna Zhamu
- 申请人地址: US OH Dayton
- 专利权人: Nanotek Instrurments, Inc.
- 当前专利权人: Nanotek Instrurments, Inc.
- 当前专利权人地址: US OH Dayton
- 主分类号: H01M4/36
- IPC分类号: H01M4/36 ; H01M4/04 ; H01M4/02 ; H01M10/056
摘要:
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.