▎ 摘　　要

NOVELTY - A reduced graphene oxide-nickel graphene conductive agent comprises graphene main component and surface-loaded nano-nickel, and has hole-modified structure can conduct and transport lithium ions. USE - Reduced graphene oxide-nickel graphene conductive agent used in conductive paste for forming positive electrode sheet for battery (all claimed). ADVANTAGE - The graphene main component contained in the conductive agent has excellent contact pattern, and nano-nickel remains in the surface reaction is lithium-friendly active site. The etching hole at the nickel loading site is used as fast channel for lithium-ion transport, which helps lithium ions to shuttle through the graphene surface, and shorten the free path of lithium ion transport to improve rate rate and cycle of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: preparation of reduced graphene oxide-nickel graphene conductive agent; graphene conductive paste, which comprises reduced graphene oxide-nickel graphene conductive agent having sheet diameter (D50) of 5-15 µm, preferably 5-10 µm; a positive electrode sheet, which is made by mixing a positive electrode main material, the graphene conductive paste and a binder; and a battery, which comprises the positive electrode sheet, a lithium negative electrode and a diaphragm.