▎ 摘　　要

Porous graphene possesses great potential as an anode material for sodium-ion batteries. Due to the porosity of the graphene, the increase in surface area allows for shorter diffusion length for electrolyte ions. Herein, the porous graphene oxide is created using the breath figure method, and then reduced by chemical, electrochemical, or thermal means. Sodium storage performance of the devised porous graphene is investigated and compared. Reduced graphene oxide shows altered hierarchical porous structures, which are highly dependent on reduction method and conditions. Of the three reduction methods, thermal reduction shows a superior sodium storage performance, yielding a maximum discharge capacity of 187 mAh/g and charge capacity of 63 mAh/g at a current rate of 50 mA/g.