▎ 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.