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Nanostructured carbon materials derived from tannin as electrodes for supercapacitors

Abstract : In this thesis, the physicochemical properties of tannin-derived mesoporous carbons were studied and their electrochemical performance as electrodes for supercapacitors (SCs) was evaluated in aqueous and organic electrolytes. The main objective of this study was to develop a fast and easy, and environmentally friendly method for the synthesis of mesoporous carbons. A novel surfactant-water-assisted mechanochemical mesostructuration (SWAMM) one-pot method was developed and optimized to produce ordered and disordered mesoporous carbons (OMCs and DMCs, respectively), only by adjusting the surfactant to water weight ratio. Further physical or chemical activation of both OMCs and DMCs improved the textural properties of the materials that resulted in good SC performance, even at high charging rates, in aqueous and organic electrolytes. The in-depth characterization performed for these new materials has also led to a better understanding of the effect of order and connectivity of the micro-mesoporous structure on the development of textural properties by the different activation processes and, consequently, on the electrochemical performance of the assembled SC.
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https://hal.univ-lorraine.fr/tel-03070352
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Submitted on : Tuesday, December 15, 2020 - 6:11:33 PM
Last modification on : Wednesday, November 3, 2021 - 7:09:52 AM

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  • HAL Id : tel-03070352, version 1

Citation

Jimena Castro-Gutiérrez. Nanostructured carbon materials derived from tannin as electrodes for supercapacitors. Chemical Sciences. Université de Lorraine, 2020. English. ⟨NNT : 2020LORR0126⟩. ⟨tel-03070352⟩

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