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  • 专利标题:   Material composition used for electrode e.g. cathode for battery e.g. lithium-sulfur battery, comprises graphene oxide-sulfur nanocomposite including graphene oxide containing functional groups, and sulfur bonded to carbon atoms.
  • 专利号:   WO2013049663-A1, KR2014082994-A, EP2761688-A1, US2014234702-A1, CN104094457-A, US9673452-B2, CN104094457-B, EP2761688-A4, US2017294646-A1, IN201402561-P4, US9853284-B2, US2018138504-A1, US10044031-B2, EP2761688-B1, KR1947353-B1
  • 发明人:   ZHANG Y, CAIRNS E J, JI L, RAO M, CAIRNS E
  • 专利权人:   UNIV CALIFORNIA, UNIV CALIFORNIA, ZHANG Y, CAIRNS E J, JI L, RAO M, UNIV CALIFORNIA, UNIV CALIFORNIA, UNIV CALIFORNIA
  • 国际专利分类:   H01M004/583, H01M010/05, H01M010/058, H01M004/133, H01M004/1393, H01M004/62, C01B031/26, C07D303/38, H01M010/0566, H01M002/16, H01M004/00, H01M010/0525, H01M004/36, H01M004/38, H01M004/587, C01B031/04, H01M002/00, C01B032/23, C01B032/70
  • 专利详细信息:   WO2013049663-A1 04 Apr 2013 H01M-004/583 201329 Pages: 43 English
  • 申请详细信息:   WO2013049663-A1 WOUS058047 28 Sep 2012
  • 优先权号:   US541374P, US14347600, KR711660, US498113, US817051

▎ 摘　　要

NOVELTY - Material composition comprises a graphene oxide-sulfur nanocomposite including graphene oxide and sulfur. The graphene oxide further contains functional groups. The sulfur is bonded to carbon atoms. USE - Material composition is used for electrode e.g. cathode for battery (all claimed) e.g. lithium-sulfur battery. ADVANTAGE - The rechargeable lithium/sulfur battery containing the material composition has reversible capacity of 950-1400 mAhg-1, and stable cycling of more than 50 deep cycles. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) electrode; (2) battery; and (3) preparation of graphene oxide-sulfur nanocomposite, which involves providing graphene oxide dispersion, adding a sodium polysulfide (Na2Sx, where x is not defined) solution to graphene oxide dispersion to form blended solution, titrating blended solution into formic acid solution to form a precipitate and heat treating for a predetermined time and temperature, such that precipitate in sealed vessel utilizes a flowing gas at specified gas flow rate.