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This creates a compressive strain on the surface platinum atoms, making the platinum more active in the rate-limiting step of oxygen reduction reaction for the fuel cell.
A significant portion of performance loss in fuel cells is generally attributed to the voltage rise for oxygen reduction in cathodes.
Among specific topics are influences of surface chemistry on the dehydrogenation kinetics of ammonia borane in porous carbon scaffolds, the synthesis and photocatalytic performance of hierarchical porous titanium phosphonate hybrid materials, the catalytic activity of sulfated zirconia promoted with cerium oxide, basic ion exchange resins as heterogeneous catalysts for biodiesel synthesis, and a novel non-metal oxygen reduction electrocatalyst based on platelet carbon nanofiber.
Summary: TEHRAN (FNA)- Iranian researchers could improve fuel cells' efficiency by synthesizing a combined structure of micro fibers-silver nanoparticle and its successful application in the oxygen reduction reaction.
SGS-Thomson, a major international semiconductor manufacturer, awarded the contract to Ionics based upon its proprietary TMT-II (triple- membrane trailer)) and Catalytic Oxygen Reduction System (C.
Mechanism of an Enhanced Oxygen Reduction Reaction at Platinum-Based Electrocatalysts: Identification and Quantification of Oxygen Species Adsorbed on Electrodes by X-Ray Photoelectron Spectroscopy (Mitsuru Wakisaka, Hiroyuki Uchida, and Masahiro Watanabe).
The researchers at University of Isfahan managed to prepare an electrode from gold with acceptable oxygen reduction electro-catalytic ability and coated its surface with least possible amount of palladium use.
The parameters, which are measured by the controller, include pH, temperature, dissolved oxygen, oxygen reduction potential, and conductivity.