Table 1. Open circuit voltage (OCV), current density and maximum power density generated by various PEMFCs based on Ni–CNT, Co–N–C or Pt catalysts; PEMFCs were measured at 60 °C with a supply of partially humidified H₂ (20 mL min^–1) at the anode and passive air convection at the cathode.

Anode	Cathode	OCV/V	I@0.2 V/μA cm–2	P max/μW cm–2
Pt	Co–N–C	0.79	1.3 × 104	2600
Ni–CNT	Pt	0.85	224	70
Ni–CNT	Co–N–C	0.74	94	23
Pt	Pt	1.00	1.75 × 105	1.05 × 103