▎ 摘　　要

NOVELTY - A cathode formulation (2) comprises electroactive material (4); and graphene (6a, 6b) interspersed with the electroactive material; where ratio of mean electroactive material domain size/mean graphene lateral domain size is 3:2 to 15:1. USE - In cathode of electrochemical cell (battery) or lithium ion batteries useful for consumer electronics as well as electric and hybrid electric vehicles. ADVANTAGE - The use of cathode formulations result in cathode/cell having properties including: increased specific capacity, achieved e.g. by lower loading of graphene (0.1-2.5%) relative to conventional conductive carbon materials (e.g. carbon black); conductivity enhancements at low graphene loading; increased power (lower voltage drop across cathode); for higher energy density applications, increased cathode thicknesses are enabled by use of graphenes due to improved conductivity and electrode mechanical properties; improved adhesion compared to carbon black; higher solids loading in cathode paste with little impact on desired paste rheology; and improved energy and/or power densities. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) cathode (C1) comprising the cathode formulation (2); (2) electrochemical cell comprising the cathode (C1); (3) making cathode (C1) involving combining particles comprising electroactive material, graphene, and binder in presence of solvent to produce paste having solids loading of at least 80%; and depositing the paste onto substrate; and forming the cathode; and (4) cathode paste containing particles comprising electroactive material; graphene; and binder, where the paste has solids loading of at least 65%. DESCRIPTION OF DRAWING(S) - The figure shows schematic cross-section view of domains of electroactive material and graphene. Cathode formulation (2) Domain of electroactive material (4) Graphene (6a, 6b)