▎ 摘　　要

NOVELTY - A hydrogen evolution inhibitor comprises a fluorinated graphene, where the mass fraction of fluorine in the fluorinated graphene is 1-30%. USE - Hydrogen evolution inhibitor for use in lead-carbon battery (claimed). ADVANTAGE - The inhibitor can remarkably reduce the hydrogen evolution reaction in the lead carbon battery and obviously improve the charging efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing hydrogen evolution inhibitor (2) a lead-carbon battery.