Tunable CoFe-based active sites on 3D heteroatom doped graphene aerogel electrocatalysts via annealing gas regulation for efficient water splitting

Tuning CoFe-based active sites on 3D heteroatom doped graphene aerogels facilitates the regulation of the electrocatalytic activity toward the OER and HER, respectively, for efficient water splitting, which is achieved by changing the annealing gas.