Reactively deposited cobalt electrodes for hydrogen evolution in alkaline solution

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Sequeira, CAC (Autor) Outra; Sousa, JR (Autor) Outra; Brito, PSD (Autor) Outra

Revista

Título: Materials Technology

Vol. 24

Páginas: 119-121

ISSN: 1066-7857

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-003-JV2

DOI: 10.1179/175355509x460659

Abstract (EN): The hydrogen evolution reaction was conducted on reactively electrodeposited cobalt electrodes in a 6M KOH solution at room temperature. For an electrode with 100 mg cm(-2) Co loading, the utilisation factor was above 75%, and the polarisation potential was -1.30 V (versus HgO/Hg) for H-2 evolution at 1 A cm(-2). The electrochemical efficiency of the electrodes was proportional to the Co loading in the 10-200 mg cm(-2) range studied. The electrodes have very high surface area and well developed porous structure, showing high activity for the H-2 evolution reaction.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3