Nickel–rare earth electrodes for sodium borohydride electrooxidation

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 2016 Italy English Publisher:Elsevier BVJournal:Electrochimica Acta, volume 190, pages 1,050-1,056 (issn: 0013-4686,

Copyright policy )Funded by:FCT | NOVEL CATHODE MATERIALS F..., FCT | ELECTROLYTIC HYDROGEN EVO..., FCT | Low-cost electrocatalysts...

Authors: Santos, DMF; Sljukic, B; Amaral, L; Milikic, J; Sequeira, CAC; SACCONE, ADRIANA; MACCIO', DANIELE;

doi: 10.1016/j.electacta.2015.12.218

handle: 11567/830701

Nickel–rare earth electrodes for sodium borohydride electrooxidation

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Abstract

Binary alloys of nickel (Ni) and dysprosium (Dy) or samarium (Sm) of different composition were prepared. Their electrocatalytic activity in respect to borohydride oxidation in alkaline medium was investigated by cyclic voltammetry, chronoamperometry and chronopotentiometry. It was correlated to their morphological and structural properties examined by SEM/EDXS and XRPD. Ni0.95Dy0.05 alloy electrode showed the highest electrocatalytic activity for BOR, and Ni0.90Sm0.10 showed the lowest. The activity of the rare earth alloys was compared to other Ni– and Pt–based materials, with promising results being reported, which envisage application of these materials as electrodes in direct borohydride fuel cells.

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Italy

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Keywords

Nickel-rare earth electrodes, sodium borohydride electrooxidation, Nickel-rare earth electrodes for sodium borohydride electrooxidation

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