Abstract
Spinel-type Fe x Co3−x O4 thin films with x = 0, 1, 2 and 3 were prepared, on stainless steel supports, using the thermal decomposition method at 400 °C. The X-ray diffraction patterns show the presence of a spinel-type structure with a low crystallinity. The electrochemical behaviour was investigated in 1 M KOH, using open-circuit-potential measurements and cyclic voltammetry. The studies allowed to observe the redox reactions occurring at the Fe x Co3−x O4 (x = 1 and 2) oxide surface, namely Fe3O4/Fe(OH)2 or Fe3O4/Fe2O3, Co3O4/CoOOH, Co(OH)2/CoOOH and CoO2/CoOOH by comparing the experimental data with those obtained for the Co3O4 and Fe3O4 films as well as with those referred to in the literature. The results show that iron ions play the major role in the solid-state surface redox transitions in the negative potential range, whereas the cobalt ions are the key species in the positive potential range. However, the contribution of each component, although small, has to be considered in both potential regions.
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References
Trasatti S, Lodi G (1980) In: Trasatti S (ed) Electrodes of conductive metalic oxides, Part B. Elsevier, Amsterdam, p 521 and references therein
Tarasevich MR, Efremov BN (1980) In: Trasatti S (ed) Electrodes of conductive metalic oxides, Part B. Elsevier, Amsterdam, p 221 and references therein
Trasatti S (1994) In: Lipkowski J, Ross PN (ed) Electrochemistry of novel materials. VCH publishers Inc., New York, p 207 and references therein
Alcantara R, Jaraba M, Lavela P, Tirado JL (2002) Electrochemical society meeting, Salt Lake City, p 131
Mohan H, Saikh IA, Kulkaarni RG (1992) Solid Sate Commun 82:907
Godinho MI, Catarino MA, da Silva Pereira MI, Mendonça MH, Costa FM (2002) Electrochim Acta 47:4307
Kishi T, Takahashi S, Nagai T (1986) Surf Coat Technol 27:351
Singh RN, Singh NK, Singh JP (2002) Electrochim Acta 47:3873
Cartaxo MAM, Ferreira TAS, Nunes MR, Mendonça MH, da Silva Pereira MI, Costa FM (2007) Solid State Sci 9:744
Silva GC, Fugivara CS, Tremiliosi Filho G, Sumodjo PTA, Benedetti AV (2002) Electrochim Acta 47:1875
Laouni E, Hamdani M, Pereira MIS, Douch J, Mendonça MH, Berghoute Y, Singh RN (2008) Int J Hydogen Energy 33:4936
Spinolo G, Ardizzone S, Trasatti S (1997) Electroanal J Chem 423:49
Boggio R, Carugati A, Trasatti S (1987) J Appl Electrochem 17:828
Hamdani M, Pereira MIS, Douch J, Ait Addi A, Berghoute Y, Mendonça MH (2004) Electrochim Acta 49:1555
Singh RN, Hamdani M, Koenig JF, Chartier P (1990) J Appl Electrochem 20:442
Mattos-Costa FI, de Lima-Neto P, Machado SAS, Avaca LA (1998) Electrochim Acta 44:1515
Hamdani M, Koenig JF, Chartier P (1988) J Appl Electrochem 18:568
Longhi M, Formaro L (1999) J Electroanal Chem 464:149
Castro EB, Cervasi CA, Vilch JR (1998) J Appl Electrochem 28:835
Cordoba SI, Carbonio RE, Lopez Teijelo M, Macagno VA (1986) Electrochim Acta 31:1321
Vago ER, Calvo EJ (1992) J Electroanal Chem 339:41
Allen PD, Hampson NA, Bignold GH (1979) J Electroanal Chem 99:299
Beck F, Kaus K, Oberst M (1985) Electrochim Acta 30:173
de Konick M, Bélanger D (2003) Electrochim Acta 48:1435
Venkatadri AS, Wagner WF, Bauer HH (1971) Anal Chem 43:1115
Zangh C, Liu Z, Wu F, Lin L, Qi F (2004) Electrochem Commun 6:1104
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The authors gratefully acknowledge the support of this study by CNRST (Maroc) and GRICES (Portugal) under Research Convention project.
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Laouini, E., Berghoute, Y., Douch, J. et al. Electrochemical behaviour of Fe x Co3−x O4 with (x = 0, 1, 2 and 3) oxides thin film electrodes in alkaline medium. J Appl Electrochem 39, 2469–2479 (2009). https://doi.org/10.1007/s10800-009-9944-9
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DOI: https://doi.org/10.1007/s10800-009-9944-9