▎ 摘　　要

NOVELTY - Preparing potassium ion graphene by mosaic method comprises adding natural flake graphite powder and potassium material into two different molybdenum vessel vessels, placing them into a vacuum reaction kettle to evacuate; heating the temperature in the vacuum reaction kettle by high frequency heating method to make the potassium ions in the medium to sublimate onto the natural flake graphite powder to form potassium ion graphite powder; cooling the potassium ion graphite powder, and stripping the potassium ion graphite powder in aqueous phase to obtain potassium ion graphene. USE - The potassium ion graphene is useful for chemical battery and used as an anode of an aluminum-oxygen battery.