nanotubes. "/": the data was not given. Carbon-fiber paper: CPF. All the potentials are calibrated and converted to reversible hydrogen electrode. S2. Comparison of materials, characteristics, preparation methods, specific performance of N,S-3DPG with the reported carbon-based HER catalysts in alkaline medium. Tafel Onset Potential at 10 slope potential mA cm−2 Samples Characteristics Electrolyte Ref. value methods (V) (V) mV dec-1 N,S co-doping; lyophilization This N,S-3DPG 3D network structure; 1 M KOH 0.19 0.28 68.4 and pyrolysis work porous structure N-rich graphene N doping; pyrolysis 0.1 M KOH 0.30 0.51 157 21 monoliths holey structure N, P Co-doped N,P Co-doping; pyrolysis 0.1 M KOH 0.29 0.47 / 22 carbon networks 3D network bottom-up N, P co-doped N,P Co-doping; approach 0.1 M KOH 0.35 >0.6 / 23 nanoporous graphene porous structure (annealing) N,O,P tri-doped N,O,P Co-doping pyrolysis 1 M KOH 0.28 0.45 154 18 porous carbon g-C3N4/graphene g-C3N4@N-doped lyophilization composites; 0.1 M KOH 0.35 >0.6 / 24 graphene and pyrolysis N doping g-C3N4/graphene g-C3N4–S,Se lyophilization composites; 0.1 M KOH 0.45 1.1 93 25 graphene andpyrolysis S, Se co-doping g-C3N4/graphene g-C3N4–N,P lyophilization composites; 0.1 M KOH 0.45 0.58 129 26 graphene and pyrolysis N, P co-doping Comparison of ORR electrocatalytic performance of N,S-3DPG with some Table S3.
nanotubes. "/": the data was not given. Carbon-fiber paper: CPF. All the potentials are calibrated and converted to reversible hydrogen electrode. S2. Comparison of materials, characteristics, preparation methods, specific performance of N,S-3DPG with the reported carbon-based HER catalysts in alkaline medium. Samples Characteristics methods Electrolyte Onset potential (V) Potential at 10 mA cm−2 (V) Tafel slope value mV dec-1 Ref. N,S-3DPG N,S co-doping; 3D network structure; porous structure lyophilization and pyrolysis 1 M KOH 0.19 0.28 68.4 This work N-rich graphene monoliths N doping; holey structure pyrolysis 0.1 M KOH 0.30 0.51 157 21 N, P Co-doped carbon networks N,P Co-doping; 3D network pyrolysis 0.1 M KOH 0.29 0.47 / 22 N, P co-doped nanoporous graphene N,P Co-doping; porous structure bottom-up approach (annealing) 0.1 M KOH 0.35 >0.6 / 23 N,O,P tri-doped porous carbon N,O,P Co-doping pyrolysis 1 M KOH 0.28 0.45 154 18 g-C3N4@N-doped graphene g-C3N4/graphene composites; N doping lyophilization and pyrolysis 0.1 M KOH 0.35 >0.6 / 24 g-C3N4–S,Se graphene g-C3N4/graphene composites; S, Se co-doping lyophilization andpyrolysis 0.1 M KOH 0.45 1.1 93 25 g-C3N4–N,P graphene g-C3N4/graphene composites; N, P co-doping lyophilization and pyrolysis 0.1 M KOH 0.45 0.58 129 26 Table S3. Comparison of ORR electrocatalytic performance of N,S-3DPG with some
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