▎ 摘　　要

NOVELTY - Preparing supported high-entropy alloy material comprises dispersing the carbon carrier in water, ultrasonically processing for 0.5-1.5 hours, placing the mixture in a water bath, controlling the rotational speed to be more than 200 revolutions/minute at 0-25 °C, adding metal salt aqueous solution and reducing agent aqueous solution, reacting for 0.5-2 hours, suction filtering and washing the obtained mixed solution until the filtrate is neutral, drying to finally obtain a carbon-supported high-entropy alloy material, where the concentration of the carbon carrier dispersed in the aqueous solution is 0.1-2 mg/ml, the concentration of the metal salt aqueous solution is 0.1-30 mmol/l, the concentration of the reducing agent aqueous solution is 0.5-300 mmol/l, and the loading of the high-entropy alloy in the carbon-supported high-entropy alloy material is 5-60 wt.%. USE - The material is useful in hydrogen precipitation and oxygen reduction reaction (claimed). ADVANTAGE - The method is environmentally friendly and low-temperature and provides carbon supported high-entropy alloy material with high electro-catalytic activity, and has low energy consumption, and does not generate other difficult to process waste liquid and so on, belonging to green preparation route. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for supported high-entropy alloy material prepared by the above method.