Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

Emerson Sarmento Gonçalves; Mirabel Cerqueira Rezende; Marta Ferreira Koyama Takahashi; Neidenêi Gomes Ferreira

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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrochemical reversibility of reticulated vitreous carbon electrodes heat treated at different carbonization temperatures

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Author(s):	Emerson Sarmento Gonçalves ; Mirabel Cerqueira Rezende ^[2] ; Marta Ferreira Koyama Takahashi ^[3] ; Neidenêi Gomes Ferreira ^[4] Total Authors: 4
Document type:	Journal article
Source:	MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 9, n. 2, p. 147-152, 2006-06-00.
Abstract
Electrochemical response of ferri/ferrocyanide redox couple is discussed for a system that uses reticulated vitreous carbon (RVC) three dimensional electrodes prepared at five different Heat Treatment Temperatures (HTT) in the range of 700 °C to 1100 °C. Electrical resistivity, scanning electron microscopy and X ray Diffraction analyses were performed for all prepared samples. It was observed that the HTT increasing promotes an electrical conductivity increasing while the Bragg distance d002 decreases. The correlation between reversibility behavior of ferri/ferrocyanide redox couple and both surface morphology and chemical properties of the RVC electrodes demonstrated a strong dependence on the HTT used to prepare the RVC. (AU)

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