▎ 摘　　要

NOVELTY - Method for preparing a graphene-activated metal oxygen evolution electrocatalyst, involves (i) using a graphite-based material as an electrode in a two-electrode system, and a solution containing sulfate ions as an electrolyte, and applying a voltage of +10 V to the anode to obtain graphene after stripping, (ii) freeze-drying after washing the graphene after peeling off, and dispersing in ethanol to obtain a graphene dispersion liquid that concentration is 4 mg/ml, and (iii) drip-coating the graphene dispersion liquid on a metal electrode, and naturally drying at room temperature for 12 hours to obtain the graphene-activated metal oxygen evolution electrocatalyst. USE - The method is used for preparing graphene-activated metal oxygen evolution electrocatalyst in electrolytic water hydrogen production technology for preparation of clean and high purity hydrogen. ADVANTAGE - The method is simple, low energy consumption and low cost, can produce corresponding electrocatalyst in large scale, and ensures excellent graphene conductivity and higher catalytic performance than the non-activated metal electrode. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the use of the graphene-activated metal oxygen evolution electrocatalyst, which involves using the graphene-activated metal oxygen evolution electrocatalyst as working electrodes, soaking in a potassium hydroxide electrolyte with a concentration of 1 M, using a platinum sheet as a counter electrode, using a silver/silver chloride electrode as the reference electrode, using Lukin capillary filled with 3 mol/l potassium chloride solution as the salt bridge of the reference electrode to carry out the oxygen evolution reaction, testing the oxygen evolution electrocatalytic performance of the working electrode by linear voltammetry with a scan rate of 5 mV/second, using EC-Lab 11.36 software to automatically perform 95% compensation resistance correction on the linear voltammetry curve, testing the conductivity of the working electrode by electrochemical impedance technique at a frequency of 100 kHz-0.1 Hz, a voltage disturbance of 5 mV, and a voltage value is 1.6 V vs RHE, using the combined electrochemical-Raman technology, testing the structural changes of the working electrode under different voltages, setting the voltage at 1-1.50 V vs RHE, and increasing the voltage value at a step rate of 0.05 V.