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Table 2 Summary of noble metal-free 2D carbon-based electrocatalysts for OER

From: Noble metal-free two dimensional carbon-based electrocatalysts for water splitting

MaterialApplicationSynthesis methodElectrolyteOnset potential versus RHE (V)Over potential versus RHE (V)Tafel slope (mV dec−1)References
NPF-GrapheneOERAnnealing0.1 M KOH1.621.82136[89]
N-GRWOERPyrolysis1.0 M KOH0.3647[81]
NFGNOERAnnealing1.0 M KOH1.451.5578[90]
NMGOERCVD0.1 M KOH1.66[82]
EG/Co(OH)2OERHydrothermal1.0 M KOH1.5363[135]
BN-NCOERAnnealing0.1 M KOH1.65[86]
CQD/GrapheneOERSolvothermal1.0 M KOH1.5744[179]
N-carbonOERPyrolysis1.0 M KOH0.38[109]
FeN4/CF/EGOERCarbonization0.5 M H2SO40.29129[6]
Co-BNCOERCarbonization1.0 M KOH0.3070[180]
Co-GrapheneOERSoft template0.1 M KOH0.3583.3[115]
Co3O4/GCNOERAnnealing0.1 M KOH0.1276[181]
N-doped grapheneOERCVD0.1 M KOH1.683[30]
CoP/N,P-GrapheneOERPyrolysis1.0 M KOH0.2754[149]
N,P-grapheneOERPyrolysis0.1 M KOH1.5770[87]
VCN/FeOOHOERCarbonization0.1 M KOH0.1757[153]
Defect grapheneOERAnnealing1.0 M KOH1.5797[85]
Ni@NCOERAnnealing1.0 M KOH0.2845[176]
Co3O4/NPCOERCarbonization0.1 M KOH1.471.570[182]