Table 1.

Selected catalysts with high OER performance

Catalysts	Substrate	Electrolyte	Overpotential at specific current density	Chronopotentiometry at specific current density	Ref.
RuO2	Ti	0.5 M H2SO4	240 mV@1 mA cm−2	–	38
IrO2	GCE	0.1 M H4ClO4	~430 mV @10 mA cm−2	–	14
BaYIrO6	Au	0.1 M H4ClO4	~315 mV @10 mA cm−2	1 h@10 mA cm−2	23
IrOx/SrIrO3	Cu wire	0.5 M H2SO4	270–290 mV @10 mA cm−2	30 h@10 mA cm−2	25
Y2Ru2O7-δŸ	GCE	0.1 M H4ClO4	270 mV @1 mA cm−2	8 h@ 1 mA cm−2	27
IrCoNi PHNCs	CFP	0.1 M HClO4	303@10 mA cm−2	3.3 h@5 mA cm−2	67
W0.57Ir0.43O3-δ	FTO	1 M H2SO4	370@10 mA cm−2	0.6 h@10 mA cm−2	68
IrNi NCs	CFP	0.1 M HClO4	280@10 mA cm−2	2 h@5 mA cm−2	69
Ir	GF	0.5 M H2SO4	290@10 mA cm−2	10 h@10 mA cm−2	70
Cr0.6Ru0.4O2 (550)	GCE	0.5 M H2SO4	178 mV @10 mA cm−2	10 h@ 10 mA cm−2	This work