A low-cost platinum film deposited direct on glass substrate for electrochemical counter electrodes

Autor(es)

Pereira, R. ^[1] ; Marchesi, L. F. ^[1] ; Freitas, R. G. ^[1] ; Matos, R. ^[1] ; Pereira, E. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Lab Mat Nanoestruturados Fabricados Eletroquimica, DQ UFSCar, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Power Sources; v. 232, p. 254-257, JUN 15 2013.
• Citações Web of Science: 8

Resumo

The preparation and characterization of platinum electrodes on glass substrates obtained by the Pechini method for a potential application as a counter electrode is presented in this paper. This method is based on the dissolution of citric acid (CA) and hexachloride platinum acid (H2PtCl6) in ethylene glycol (EG), and then calcinated in an appropriated temperature to produce the desired metallic film. Characterization was carried out by X-ray diffraction, scanning electron and atomic force microscopy and cyclic voltammetry. X-ray patterns of platinum on glass substrate showed the same features of the platinum bulk metal as well as its voltammetric profile. In order to determine the stability of the electrode, the electrode was subjected to 5000 voltammetric cycles and polarized at constant current of 100 mA cm(-2) for at least 200 h, showing no considerable differences compared with the as synthesized electrode. Moreover, the main advantage of the electrode is the low cost (US\$ 0.03 cm(-2)) of the prepared samples. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/19865-6 - Estudo das propriedades do compósito P3HT:PCBM em função do tratamento térmico através da espectroscopia de impedância
• Beneficiário: Luís Fernando Quintino Pereira Marchesi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/05555-2 - Investigação da formação eletroquímica de nanotubos-TiO2 e sua aplicação em sistemas conversores de energia nanoarquiteturados
• Beneficiário: Renato Garcia de Freitas Sobrinho
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado