• 专利标题:   Method for recycling electrode material in lithium-ion battery, involves adding water and carbonate ester to electrode material to form two-phase system, and separating and filtering organic phase of two-phase system to recover graphene.
  • 专利号:   WO2018014136-A1, CA3031449-A1, KR2019038853-A, EP3488486-A1, CN109792095-A, IN201917003648-A
  • 发明人:   DELAPORTE N, OSSONON D B, ZAGHIB K, BELANGER D
  • 专利权人:   HYDROQUEBEC, TRANSFERT PLUS SEC, HYDROQUEBEC, TRANSFERT PLUS SEC, TRANSFERT PLUS SEC, HYDROQUEBEC
  • 国际专利分类:   H01M010/54, H01M010/052, H01M004/131, H01M004/136, H01M004/62
  • 专利详细信息:   WO2018014136-A1 25 Jan 2018 H01M-010/54 201810 Pages: 31 French
  • 申请详细信息:   WO2018014136-A1 WOCA050880 21 Jul 2017
  • 优先权号:   US365441P, CA3031449, CN80057533

▎ 摘  要

NOVELTY - The method involves adding, in any order, water and an immiscible solvent i.e. carbonate ester to an electrode material, and forming a two-phase system having an organic phase and an aqueous phase. The organic phase is separated and filtered to recover the graphene, where the carbonate ester is carbonate diethyl carbonate, dimethyl carbonate, methyl and ethyl mixture of the carbonates. The organic phase is washed with deionized water prior to filtration, so as to remove residual traces of electrochemically active material. USE - Method for recycling an electrode material containing graphene and an electrochemically active material in a lithium-ion battery. ADVANTAGE - The water and the carbonate ester are added to the electrode material to form the two-phase system, and the organic phase of the two-phase system is separated and filtered to recover the graphene, thus enabling to recycle the electrode material in a simple manner and with low energy consumption. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic illustration of a method for recycling an electrode material. '(Drawing includes non-English language text)'