• 专利标题:   Composition useful in electrochemical energy storage devices, comprises a polymeric material containing active material particles, and graphene material particles forming a graphene network.
  • 专利号:   US2011287316-A1, WO2012047316-A1
  • 发明人:   LU W, BUETTNERGARRETT J, KRYSIAK M
  • 专利权人:   ADA TECHNOLOGIES INC, ADA TECHNOLOGIES INC
  • 国际专利分类:   B05D003/02, B05D003/06, B05D005/12, B82Y099/00, H01B001/24, H01B005/00, H01G009/00, H01G009/035, H01G009/155, H01L039/12, H01L039/24, H01M004/131, H01M004/505, H01M004/525, H01M004/583, H01M004/62, B05C001/00, C25D017/00, H01L021/02
  • 专利详细信息:   US2011287316-A1 24 Nov 2011 H01M-004/62 201180 Pages: 65 English
  • 申请详细信息:   US2011287316-A1 US113971 23 May 2011
  • 优先权号:   US347195P, US355738P, US113971

▎ 摘  要

NOVELTY - Composition, comprises: a polymeric material containing many active material particles; and many graphene material particles, where the graphene material particles form a graphene network, the graphene network interconnects and/or coats at least some, if not most, of the active material particles, at least some of the graphene material particles forming the graphene network were untangled and/or un-aggregated by at least one of an ionic liquid or ultrasonic energy. USE - The composition is useful in an apparatus (claimed) including electrochemical energy storage devices. ADVANTAGE - The composition has charge, discharge capacity retention, specific energy and/or power on cycling at least equal or greater than a similar composition prepared without the ionic liquid and/or sonication. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a method, comprising: providing an active material; contacting the active material with a polymer binder and graphene material to form a slurry having at least some of the graphene material in an aggregated and/or tangled form; and contacting the slurry with at least one of an ionic liquid and ultrasonic energy to form a substantially homogeneous suspension of graphene and active materials, where at least one of the ionic liquid and ultrasonic energy un-aggregates and/or untangles some of the aggregated or tangled graphene material; and (2) an apparatus, comprising: a composite comprising a polymer binder containing many graphene particles in physical contact with many active material particles, the graphene particles form a conductive network, where the conductive network interconnects and/or coats at least some, if not most, of the active material particles, where at least some of the graphene material particles forming the graphene network were untangled and/or un-aggregated by at least one of an ionic liquid or ultrasonic energy; and an electrically conductive material having the composite positioned on at least one surface of the electrically conductive material.