Carbon-polydimethylsiloxane composites as paste electrodes: Electrochemical characterization and surface morphological analysis

Authors

Stephanie Ann O. Bermudez Institute of Chemistry, University of the Philippines Diliman
Angelo Gabriel E. Buenaventura Institute of Chemistry, University of the Philippines Diliman
Francisco I. Flores Institute of Chemistry, University of the Philippines Diliman
Roma S. Lopez Material Science and Engineering Program, University of the Philippines Diliman
Allan Christopher C. Yago Institute of Chemistry, University of the Philippines Diliman

Abstract

Carbon-polymer composite materials for carbon paste electrode (CPE) application were prepared using graphite and multi-walled carbon nanotubes (MWCNT) as conducting particles and polydimethylsiloxane (PDMS) as binder. Different viscosities of PDMS were used and its effect on the electrochemical response, surface area and specific capacitance of the electrodes were studied and correlated to surface morphology. Electrochemical performance was evaluated by studying the redox response of each CPE towards K₄[Fe(CN)₆], p-benzoquinone, and ascorbic acid employing Cyclic Voltammetry. In general, the MWCNT-based electrode showed good chemical reversibility, while electrochemical reversibility study showed hyperNernstian response for all electrodes.

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Issue

2015: Proceedings of the 33rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2015-PB-20

Section

Poster Session PB

Published

2015-06-03

How to Cite

[1]

SAO Bermudez, AGE Buenaventura, FI Flores, RS Lopez, and ACC Yago, Carbon-polydimethylsiloxane composites as paste electrodes: Electrochemical characterization and surface morphological analysis, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-PB-20 (2015). URL: https://proceedings.spp-online.org/article/view/1226.