▎ 摘　　要

NOVELTY - Preparation of super-rich micro-nano pore structure porous graphite comprises adding aqueous solution of graphene oxide to aqueous solution of alkaline earth metal carboxylate while stirring for 24-72 hours obtain suspension, vacuum freeze-drying at - 30-- 60 degrees C for 12-36 hours to obtain self-assembled graphene oxide mixture of alkaline earth metal carboxylate, heating at 650-1200 degrees C for 0.5-4 hours with heating speed of 5 degrees C/minute under argon protection, cooling to obtain solid precursor powder, repeatedly washing with deionized water and dilute acid and drying at 40-100 degrees C. USE - Method for preparing super-rich micro-nano pore structure porous graphite used for supercapacitor (claimed) and used as electrode material for electrochemical capacitors.