We study slow and nearly reversible processes of reduction, hydride formation and oxidation in Raney-Ni air electrodes in concentrated KOH solutions. A labile β-NiH phase is formed upon prolonged cathodic polarization under H2 atmosphere. Repeated cathodic/anodic cycles enhance hydrogen intake and induce surface modifications of the Raney-Ni grains. ©The Electrochemical Society.
(2007). Electrochemical activation of Raney Nickel air electrodes [conference presentation - intervento a convegno]. In ECS TRANSACTIONS. Retrieved from http://hdl.handle.net/10446/21402
Electrochemical activation of Raney Nickel air electrodes
Villa, Marco;Verardi, Erwin;Salvi, Paolo;Nelli, Paolo;Zangari, Giovanni
2007-01-01
Abstract
We study slow and nearly reversible processes of reduction, hydride formation and oxidation in Raney-Ni air electrodes in concentrated KOH solutions. A labile β-NiH phase is formed upon prolonged cathodic polarization under H2 atmosphere. Repeated cathodic/anodic cycles enhance hydrogen intake and induce surface modifications of the Raney-Ni grains. ©The Electrochemical Society.File allegato/i alla scheda:
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