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Non-Equilibrium Ionic Liquid-Electrode Interface at Elevated Temperature and Its Influence on Co2+Reduction Process

Tulodziecki, Michal and Tarascon, Jean-Marie and Taberna, Pierre-Louis and Guéry, Claude Non-Equilibrium Ionic Liquid-Electrode Interface at Elevated Temperature and Its Influence on Co2+Reduction Process. (2016) Journal of The Electrochemical Society, 163 (8). D355-D365. ISSN 0013-4651

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Official URL: http://dx.doi.org/10.1149/2.0101608jes

Abstract

Electrodeposition in Ionic Liquid (IL) media is still at its infancy stage. Recently much attention is devoted to exploration of the IL-electrode interface for better understanding of the electrochemical processes at the electrified surfaces. Herein, we provide a new perspective of the temperature-driven IL-substrate interface structuring. We observed an increase in Co2+ reduction kinetics induced by applying a high temperature gradient. In contrast, keeping the cell at a high constant temperature (100°C) leads to slower Co2+ reduction kinetics, it results in a shift of the reduction onset and evolution of the cyclic voltammogram shape with time. We could ascribe these phenomena to the disturbance of the electrochemical double layer (induced by heating) and its further slow reorganization at constant temperature. We showed that such non-equilibrium behavior can be beneficial for the synthesis of metallic thin films from ILs. Electrochemical quartz crystal microgravimetry, impedance spectroscopy, cyclic voltammetry and chronoamperometry were employed within this work.

Item Type:Article
Additional Information:Thanks to ECS editor. The definitive version is available at http://ecsdl.org/ The original PDF of the article can be found at Journal of The Electrochemical Society website : http://jes.ecsdl.org/
HAL Id:hal-01487778
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)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Picardie Jules Verne (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:13 Mar 2017 09:29

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