▎ 摘　　要

NOVELTY - A modified electrode preparing method involves subjecting the aminated graphene solution to ultrasonic treatment to obtain aminated graphene dispersing solution. The aminated graphene dispersing solution is dipped on a electrode surface, followed by drying, taking the carbon quantum dot solution, drop coating the carbon quantum dot solution onto the electrode surface and drying. USE - Method for preparing modified electrode. ADVANTAGE - The method enables preparing the modified electrode with strong anti-jamming capability.