Electrocatalyst supports water electrolysis

The porous electrodes in PEFCs are bonded to the surface of the ion-exchange membranes which are 0.12- to 0.25-mm thick by pressure and at a temperature usually between the glass-transition temperature and the thermal degradation temperature of the membrane. These conditions provide the necessary environment to produce an intimate contact between the electrocatalyst and the membrane surface. The early PEFCs contained Nafton membranes and about 4 mg/cm of Pt black in both the cathode and anode. Such electrode/membrane combinations, using the appropriate current coUectors and supporting stmcture in PEFCs and water electrolysis ceUs, are capable of operating at pressures up to 20.7 MPa (3000 psi), differential pressures up to 3.5 MPa (500 psi), and current densities of 2000 m A/cm. ... [Pg.578]

Esposito DV, Hunt ST, Kimmel YC, Chen JG (2012) A new class of electrocatalysts for hydrogen production from water electrolysis metal monolayers supported on low-cost transition metal carbides. J Am Chem Soc 134 3025-3033... [Pg.42]

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