▎ 摘　　要

NOVELTY - Preparing graphene/copper/copper oxide composite powder by low energy ball milling comprises (i) subjecting the graphene to mixed acid leaching, washing, drying, and dispersing ultrasonically in deionized water to obtain graphene dispersion, (ii) pre-ball milling the copper powder at 10-150 rotations/minute (rpm), mixing with graphene dispersion to adjusting the pH to 2.5-4.5, and subjecting to secondary ball milling at 10-150 rpm to obtain mixed slurry, and (iii) adjusting the mixed slurry to neutrality, stirring the reaction at 60-90 degrees C, filtering and drying. USE - The method is useful for preparing graphene/copper/copper oxide composite powder by low energy ball milling. ADVANTAGE - The method: is simple, has high rate and is suitable for large-scale production; and the obtained product can remains intact, and has uniform dispersion.