• 专利标题:   Energy storage device used e.g. as lithium-ion battery, comprises negative electrode having graphene, first binder and conductive additive, positive electrode having active material and second binder and separator present between electrodes.
  • 专利号:   US2018062159-A1, WO2018044786-A1, TW201841422-A, CA3033140-A1, AU2017321294-A1, KR2019043157-A, BR112019004128-A2, CN109845004-A, IN201917010855-A, EP3507846-A1
  • 发明人:   ELKADY M F, KANER R B, KOWAL M, EL KADY M F
  • 专利权人:   UNIV CALIFORNIA, UNIV CALIFORNIA, UNIV CALIFORNIA
  • 国际专利分类:   H01M010/0525, H01M004/04, H01M004/131, H01M004/133, H01M004/505, H01M004/525, H01M004/583, H01M004/62, H01M004/66, H01M002/14, H01M004/1393, H01G011/06, H01G011/36, H01G011/38, H01M004/136, H01M004/1391
  • 专利详细信息:   US2018062159-A1 01 Mar 2018 H01M-004/133 201821 Pages: 56 English
  • 申请详细信息:   US2018062159-A1 US688342 28 Aug 2017
  • 优先权号:   US381859P, US688342, CA3033140, BR11004128, CN80063416

▎ 摘  要

NOVELTY - Energy storage device comprises: (a) a negative electrode (905) comprising graphene, a first binder, and a conductive additive; (b) a positive electrode (907) comprising an active material, and a second binder; and (c) a separator (906) between the negative electrode and the positive electrode. USE - The energy storage device is useful: as lithium-ion battery; and in portable electronics e.g. cell phones, computers and cameras, medical devices e.g. life-sustaining and life-enhancing medical devices including pacemakers, defibrillators, hearing aids, pain management devices and drug pumps, electric vehicles e.g. batteries, electric aircraft and military batteries. ADVANTAGE - The energy storage device: exhibits a storage capacity of 800-4000 (preferably at least 800) mAh and 80-800 (preferably at least 80) mAh/g; exhibits a cycle life of 500-1500 (preferably 500) cycles and an equivalent series resistance of 5-100 (preferably at most 100) milliohms (claimed); exhibits energy density of greater than or equal to 50 (preferably 400) Wh/kg, power density of greater than or equal to 500 (preferably 3500) W/kg, a charge voltage of greater than or equal to 2 (preferably 4.5) V; provides improved performance as compared to conventional energy storage devices; and provides double the capacity of commercial cells, twice the power of commercial cells, and/or cycle life and be used for twice as long. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for fabricating an electrode, comprising combining a binder and a solvent, heating the binder and the solvent, mixing an active material into the binder and the solvent to form a slurry, roll coating the slurry onto a foil, drying the slurry on the foil, roll pressing the slurry on the foil, and slitting the slurry on the foil. DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of a structure of a battery. Positive terminal (901) Gasket (903) Negative electrode (905) Separator (906) Positive electrode (907)