High-temperature polymer electrolyte fuel oxygen reduction reaction

Liu, Z., Wainright, J.S., SavineU, R.F. (2004) High-temperature polymer electrolytes for PEM fuel cells study of the oxygen reduction reaction (ORR) at a Pt polymer electrolyte interface. Chemical Engineering Science, 59, 4833 838. [Pg.287]

Polymer electrolyte and direct methanol fuel cells (PEFCs and DMFCs) are the most promising power sources for applications such as electric vehicles and electronic portable devices, due to their high power density, relatively quick startup, rapid response to varying loading, and low operating temperature [131]. Pt-based catalysts are the most important electrocatalysts in these fuel cells [132]. It has been widely reported that the catalytic activity of a Pt-based catalyst for the oxygen reduction reaction (ORR) and the methanol oxidation reaction in fuel cells is highly dependent on the oxidation states of the Pt crystallites on the surface of the catalyst [133, 134]. The oxidation states of Pt and the crystallites contents can... [Pg.513]