▎ 摘　　要

NOVELTY - The preparation of graphene-based photoelectric conversion device involves diluting carbon fiber, carrying out acid treatment to obtain graphene oxide solution, immersing hydrophilic carbon cloth into graphene oxide solution for electrochemical deposition to obtain graphene oxide-carbon cloth composite material, and subjecting graphene oxide-carbon cloth composite material to hydrogen reduction. The acid used for acid treatment includes nitric acid and sulfuric acid. USE - Preparation of graphene-based photoelectric conversion device used in photoelectric conversion (all claimed). ADVANTAGE - The method enables preparation of graphene-based photoelectric conversion device with high photoelectric conversion performance and high energy utilization ratio, and does not need to input additional energy. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: graphene-based photoelectric conversion device, which comprises carbon cloth and graphene which is attached to carbon cloth; and #usage of graphene-based photoelectric conversion device in photoelectric conversion.