Effect of the partial replacement of Ni or Co by Cu on the electrocatalytic activity of the NiCo2O4 spinel oxide

Autor:	Ana C. Tavares, F.M. Costa, M. I. da Silva Pereira, M.A.M. Cartaxo
Rok vydání:	1999
Předmět:	Tafel equation General Chemical Engineering Thermal decomposition Inorganic chemistry Spinel Oxygen evolution Oxide chemistry.chemical_element engineering.material Electrocatalyst Copper Analytical Chemistry Nickel chemistry.chemical_compound chemistry Electrochemistry engineering
Zdroj:	Journal of Electroanalytical Chemistry. 464:187-197
ISSN:	1572-6657
DOI:	10.1016/s0022-0728(99)00018-2
Popis:	A comparative study of Ni 1− x Cu x Co 2 O 4 and NiCo 2− y Cu y O 4 systems derived from the NiCo 2 O 4 spinel oxide by the partial replacement of Ni or Co by Cu respectively, has been performed. The two systems have been prepared by thermal decomposition of aqueous nitrate solutions, on nickel supports, at 623 K. The influence of the amount of copper on the electrode performance towards the oxygen evolution process is studied. Steady state measurements followed by Tafel analysis has been done. The electrochemical results have been correlated with the surface composition of the electrodes by means of X-ray photoelectron spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eadf7eb27782cc2c45fc1ef254722ecd https://doi.org/10.1016/s0022-0728(99)00018-2 Zobrazit plný text záznamu Full Text from ScienceDirect