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Article

Good Choice of Electrode Material as the Key to Creating Electrochemical Sensors—Characteristics of Carbon Materials and Transparent Conductive Oxides (TCO)

Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, ul. Wita Stwosza 63, 80-308 Gdansk, Poland
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Authors to whom correspondence should be addressed.
Materials 2021, 14(16), 4743; https://doi.org/10.3390/ma14164743
Submission received: 1 July 2021 / Revised: 7 August 2021 / Accepted: 17 August 2021 / Published: 22 August 2021
(This article belongs to the Special Issue Advanced Electrode Materials Dedicated for Electroanalysis)

Abstract

The search for new electrode materials has become one of the goals of modern electrochemistry. Obtaining electrodes with optimal properties gives a product with a wide application potential, both in analytics and various industries. The aim of this study was to select, from among the presented electrode materials (carbon and oxide), the one whose parameters will be optimal in the context of using them to create sensors. Electrochemical impedance spectroscopy and cyclic voltammetry techniques were used to determine the electrochemical properties of the materials. On the other hand, properties such as hydrophilicity/hydrophobicity and their topological structure were determined using contact angle measurements and confocal microscopy, respectively. Based on the research carried out on a wide group of electrode materials, it was found that transparent conductive oxides of the FTO (fluorine doped tin oxide) type exhibit optimal electrochemical parameters and offer great modification possibilities. These electrodes are characterized by a wide range of work and high chemical stability. In addition, the presence of a transparent oxide layer allows for the preservation of valuable optoelectronic properties. An important feature is also the high sensitivity of these electrodes compared to other tested materials. The combination of these properties made FTO electrodes selected for further research.
Keywords: contact angle; conductive materials; electrochemical measurements; FTO electrodes; carbon electrodes contact angle; conductive materials; electrochemical measurements; FTO electrodes; carbon electrodes
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MDPI and ACS Style

Cirocka, A.; Zarzeczańska, D.; Wcisło, A. Good Choice of Electrode Material as the Key to Creating Electrochemical Sensors—Characteristics of Carbon Materials and Transparent Conductive Oxides (TCO). Materials 2021, 14, 4743. https://doi.org/10.3390/ma14164743

AMA Style

Cirocka A, Zarzeczańska D, Wcisło A. Good Choice of Electrode Material as the Key to Creating Electrochemical Sensors—Characteristics of Carbon Materials and Transparent Conductive Oxides (TCO). Materials. 2021; 14(16):4743. https://doi.org/10.3390/ma14164743

Chicago/Turabian Style

Cirocka, Anna, Dorota Zarzeczańska, and Anna Wcisło. 2021. "Good Choice of Electrode Material as the Key to Creating Electrochemical Sensors—Characteristics of Carbon Materials and Transparent Conductive Oxides (TCO)" Materials 14, no. 16: 4743. https://doi.org/10.3390/ma14164743

APA Style

Cirocka, A., Zarzeczańska, D., & Wcisło, A. (2021). Good Choice of Electrode Material as the Key to Creating Electrochemical Sensors—Characteristics of Carbon Materials and Transparent Conductive Oxides (TCO). Materials, 14(16), 4743. https://doi.org/10.3390/ma14164743

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