▎ 摘　　要

NOVELTY - The material has a graphene sheet layer adhered with noble metal Nano particles by L-cysteine. Noble metal is formed as platinum, gold and palladium. Diameter of the noble metal Nano-particles is about 5 nm to 20 nm. USE - Water-soluble graphite-noble metal nanometer conductive composite material. ADVANTAGE - The material has high load rate, better water solubility and biocompatibility, and is simple to operate and green and environment-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing water-soluble graphite-noble metal nanometer conductive composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a water-soluble graphite-noble metal nanometer conductive composite material.