Reactively deposited cobalt electrodes for hydrogen evolution in alkaline solution

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Sequeira, CAC (Author) Other; Sousa, JR (Author) Other; Brito, PSD (Author) Other

Journal

Title: Materials Technology

Vol. 24

Pages: 119-121

ISSN: 1066-7857

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3