High Performance PEM Fuel Cell with Low Platinum Loading at the Cathode Using Magnetron Sputter Deposition

Table 2

EAS and hydrogen adsorption charge results for different configurations of sputtered Pt.

Height of Pt sputtered (Å)	Electrochemical active surface (EAS)	Hydrogen adsorption charge		Glass carbon area
	EAS (cm^2/g)	Qhm (mC/cm^2)	Qhm1 (mC)	S (cm^2)
223.2 Å (0.05 mg/cm^2)	52.3176	0.5493	0.0388	0.0707
2*111.6 Å (0.05 mg/cm^2)	82.7137	0.8685	0.0614	0.0707
2*67 Å + 89.2 Å (0.05 mg/cm^2)	142.8164	1.4996	0.1059	0.0707