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Hydrogen Evolution Reaction at Indium Electrode in Molten Ethylammonium Tetrafluorogborate

Więcek B.

Polish Journal of Chemistry

2001

Vol. 75, nr 7

1031-1038

The hydrogen evolution reaction (HER) has been studied at indium electrode in pure molten ethylammonium tetrafluoroborate (EtNH3BF4). Measurements were carried out from 424 to 474 K. The a.c. impedance and potentiostatic polarization techniques were used. The exchange current density of the HER, its overall apparent activation energy, the cathodic transfer coefficient and the double layer capacitance have been determined. It has been postulated that the amine molecules do not adsorb on the indium electrode surface in the potential range applied and do not inhibit the HER.