▎ 摘　　要

NOVELTY - Tetrakis (triphenylphosphine) palladium modified graphene composite material comprises tetrakis (triphenylphosphine) palladium forms a composite material with graphene through pi-pi stacking action. USE - The composite material is useful as a lithium-sulfur battery intercalation film (claimed), and a catalyst for catalyzing the cathode interfacial reaction of lithium-sulfur batteries. ADVANTAGE - The composite material provides lithium-sulfur battery with good cycle life and electrochemical performance; and successfully builds the bridge between the organic catalysis and electrochemical cell field. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a preparation method of tetra (triphenylphosphine) palladium modified graphene composite material; and (2) a lithium-sulfur battery.