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Laser-scribed Ru organometallic complex for the preparation of RuO 2 micro-supercapacitor electrodes on flexible substrate

Brousse, Kevin and Nguyen, S and Gillet, Angélique and Pinaud, Sébastien and Tan, Reasmey P. and Meffre, Anca and Soulantica, Katerina and Chaudret, Bruno and Taberna, Pierre-Louis and Respaud, Marc and Simon, Patrice Laser-scribed Ru organometallic complex for the preparation of RuO 2 micro-supercapacitor electrodes on flexible substrate. (2018) Electrochimica Acta, 281. 816-821. ISSN 0013-4686

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Official URL: https://doi.org/10.1016/j.electacta.2018.05.198


Flexible and miniaturized energy storage devices are necessary for the development of wearable applications. Hence, micro-supercapacitors, which offer good compromise between energy densities, high power capabilities and long cycle life, have to be integrated on flexible substrates. Laser-writing techniques are suitable for engineering multiple materials within short times. The integration of RuO2 onto flexible substrates usually relies on the irradiation of ruthenium salts displaying an oxidation state of the metal varying from +II to +IV, and for which additives are necessary in the electrode to compensate the lack of adherence of the resulting large ruthenium grains. Here, we report a facile and scalable preparation of RuO2 flexible electrodes from direct laser-writing of a spin-coated solution of ruthenium molecular precursor, the Ru(COD)(COT) (COD = 1,5-cyclooctadiene, COT = 1,3,5-cyclooctatriene) and cellulose acetate, without the addition of any other capacitive material in the electrode. The obtained Ru/RuO2 deposit showed good adherence on a Au thin film deposited on either silicon or polyimide (Kapton™) substrates, and delivered up to 16 mF cm-2 at 100 mV s−1 in 1 M H2SO4. Furthermore, the flexible electrodes exhibited good capacitance retention, with more than 60% of the initial capacitance recorded at high scan rate of 10 V s−1. Laser-writing using this original ruthenium metallic precursor offers an easy and scalable fabrication method for preparing additive-free RuO2-based micro-supercapacitor electrodes.

Item Type:Article
HAL Id:hal-02022850
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 - Toulouse INP (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Other partners > Sorbonne Université (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (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:
Deposited On:18 Feb 2019 10:40

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