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Electrochemical study of pseudocapacitive behavior of Ti3C2Tx MXene material in aqueous electrolytes

Shao, Hui and Lin, Zifeng and Xu, Kui and Taberna, Pierre-Louis and Simon, Patrice Electrochemical study of pseudocapacitive behavior of Ti3C2Tx MXene material in aqueous electrolytes. (2019) Energy Storage Materials, 18. 456-461. ISSN 2405-8297

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Official URL: https://doi.org/10.1016/j.ensm.2018.12.017

Abstract

In this paper, a multiple potential step chronoamperometry (MUSCA) technique is used to analyze the electrochemical behavior of pseudocapacitive Ti3C2Tx MXene material. MUSCA allows for reconstruction of cyclic voltammograms with considerably lower ohmic drop contribution. As such, the voltammogram current responses from the surface and bulk processes can be precisely deconvoluted at any given potentials, especially at high scan rates. An electrochemical kinetic analysis of the Ti3C2Tx electrode using the calculated voltammograms showed that the surface process dominates at higher scan rate while the bulk process takes over at the low scan rate in both acidic and alkaline electrolytes. By minimizing the ohmic drops, the MUSCA method is presented to be a useful tool to study the natural electrochemical behavior of pseudocapacitive electrodes and to help designing better energy storage systems.

Item Type:Article
HAL Id:hal-02359535
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Collège de France (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE)
Other partners > Ecole Nationale Supérieure de Chimie de Montpellier - ENSCM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Other partners > Sichuan University - SCU (CHINA)
Other partners > Sorbonne Université (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Nantes (FRANCE)
Other partners > Université de Picardie Jules Verne (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
Other partners > Université de Haute Alsace - UHA (FRANCE)
Other partners > Université de Montpellier (FRANCE)
Laboratory name:
Funders:
China Scholarship Council
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Deposited By: Yves MOMBOISSE
Deposited On:12 Nov 2019 13:19

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