▎ 摘　　要

NOVELTY - A solid particle nanocomposite comprises graphene nanoplatelets (2-98 wt.%) dispersed in or bonded by binder or matrix material. The graphene nanoplatelets are not obtained from direct graphitization of binder or matrix material. USE - Solid particle nanocomposite for use in electrochemical cell electrode such as anode of lithium secondary battery and electrode of supercapacitor (claimed). ADVANTAGE - When used as anode active material, the solid particle nanocomposite exhibits high reversible capacity, low irreversible capacity, good compatibility with commonly used electrolytes (no graphite layer exfoliation phenomenon), and long charge-discharge cycle life. An anode comprising solid particle nanocomposite provides specific capacity of greater than or equal to 350 mAh/g. A supercapacitor comprising solid particle nanocomposite as electrode active material provides specific capacitance of greater than or equal to 100 F/g. DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of a cylinder-shape lithium ion battery. Cylindrical case (10) Insulating body (12) Electrode assembly (14) Positive electrode (16) Separator (18) Negative electrode (20) Insulating paper sheet (22) Insulating seal plate (24) Positive electrode terminal (26) Positive electrode lead (28)