▎ 摘　　要

NOVELTY - Preparation of the supported metal-based catalyst involves (s1) using a metal precursor, an additive, a carrier and an adsorbent in a mass ratio of 1:(0-30):(0.1-2):(0-300), (s2) adsorbing the metal precursor and the additive on the carrier ton the carrier to obtain the powder for adsorbing the metal precursor, and (s3) separating powder for adsorbing metal precursor and the adsorbent from each other, placing in a closed container, heat-treating under the action of a reducing gas, and removing gas by-produts by using the adsorbent. USE - Preparation of supported metal-based catalyst used in energy storage devices, such as solar energy, wind energy, and nuclear energy. ADVANTAGE - The metal-based catalyst has a small metal particle size, which improves the utilization rate of the metal, and the catalytic performance. The preparation method of the catalyst is simple, convenient, and low cost consumption.