Electrocatalysis under conditions of high mass transport: Investigations of hydrogen oxidation on single submicron Pt particles supported on carbon

Article Abstract:

The mechanism and kinetics of the hydrogen oxidation reaction (hor) are investigated using carbon-supported single particles of Pt electrocatalyst with radii as small as 40 nm. The high mass transport rates on such small particles enabled to investigate the rapid kinetics of the hor in the absence of diffusion limitations. The results are found to have significant implications on the understanding and modeling of the reactions in solid polymer electrolyte fuel cells.

Methods, Analysis, Carbon, Oxidation-reduction reaction, Oxidation-reduction reactions, Mass transfer

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Hydrogen absorption and desorption by the Li-Al-N-H system

Article Abstract:

An experiment was performed to store hydrogen reversibly by the mixture of lithium hexahydridoalumincate L[i.sub.3]Al[H.sub.6] and lithium amide LiN[H.sub.2] with 1:2 molar ratio to yield Li-Al-N-H system. The [H.sub.2] absorption and desorption capacities of the Li-Al-N-H system with nano-Ni were 3-4 wt percent and greater than twice that of the system without the catalyst.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Lithium Compounds, Aluminum Compounds, Research, Absorption

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