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Titolo:
Electrochemical study of spinel oxide systems with nominal compositions Ni1-xCuxCo2O4 and NiCo2-yCuyO4
Autore:
Tavares, AC; Cartaxo, MAM; Pereira, MID; Costa, FM;
Indirizzi:
Fac Ciencias Lisboa, CITECMAT, Dept Quim & Bioquim, P-1700 Lisbon, Portugal Fac Ciencias Lisboa Lisbon Portugal P-1700 quim, P-1700 Lisbon, Portugal
Titolo Testata:
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
fascicolo: 1, volume: 5, anno: 2001,
pagine: 57 - 67
SICI:
1432-8488(200101)5:1<57:ESOSOS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXYGEN EVOLUTION; ELECTROCATALYTIC ACTIVITY; NICO2O4; NI; ELECTRODES; BEHAVIOR; SURFACE; XPS; CO; CU;
Keywords:
Ni-Co-Cu spinel oxides; thermal decomposition; X-ray diffraction; X-ray photoelectron spectroscopy; cyclic voltammetry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Pereira, MID Univ Milan, Dept Phys Chem & Electrochem, Via Venezian 21, I-20133 Milan, Italy Univ Milan Via Venezian 21 Milan Italy I-20133 Milan, Italy
Citazione:
A.C. Tavares et al., "Electrochemical study of spinel oxide systems with nominal compositions Ni1-xCuxCo2O4 and NiCo2-yCuyO4", J SOL ST EL, 5(1), 2001, pp. 57-67

Abstract

Studies on the electrochemical behaviour of Ni1-xCuxCo2O4 (x less than or equal to 0.75) and NiCo2-yCuyO4 (y less than or equal to 0.30) electrodes in 5 mol dm(-3) KOH aqueous solutions are presented. The oxide layers have been prepared by thermal decomposition of aqueous nitrate solutions on nickel supports at 623 K. Powder samples were also prepared by thermal decomposition under the same conditions. The powder samples and the oxide layers were characterised by X-ray powder diffraction. The influence of the copper content on the voltammetric response of the electrodes and activity towards oxygen evolution reaction is analysed and correlated with the surface composition of the electrodes by means of X-ray photoelectron spectroscopy data. The analysis of the results reveals that the presence of Cu affects the electrode behaviour and its influence depends on which cation has been replaced.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/08/20 alle ore 19:21:23