Hydrogen-induced chemical erosion of a-C: H thin films: product distribution and temperature dependence

Article Abstract:

Amorphous hydrogenated carbon (a-C: H) films in the thickness range 1-20 nm were deposited at 300 K on a Pt (111) single crystal by means of the ion-beam deposition (IBD) method. The investigation reveals that erosion of a-C: H films through impact of thermal hydrogen atoms leads to the formation of C1-C8 hydrocarbons with C1 and C2 species as the dominating products.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thick Film Materials, Carbon, Thick films

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Electrochemical impedance study of PEM fuel cells. Experimental diagnostics and modeling of air cathodes

Article Abstract:

An investigation is made into the impedance response of H2/air proton exchange membrane fuel cells (PEM FC) in conditions suitable for the operation of low-power fuel cells. The applicability of the electrochemical impedance study (EIS) is systematically examined.

ELECTRONIC & OTHER ELECTRIC EQUIPMENT, Fuel Cells & Thermic Generators, All Other Miscellaneous Electrical Equipment and Component Manufacturing, Usage, Electrochemistry, Fuel cells, Atomic properties, Impedance spectroscopy

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