Polyoxometalate-Enhanced 3D-Printed Supercapacitors

Mario Palacios-Corella, Kalyan Ghosh, Edurne Redondo, Martin Pumera

Research output: Contribution to journalArticlepeer-review

Abstract

The contemporary critical energy crisis demands the fast and cost-effective preparation of supercapacitors to replace old-fashioned batteries. 3D-printing has been established as a fast, cheap, and reliable new manufacturing technique that enables the preparation of such devices. Unfortunately, carbon-based filaments used in 3D printing lack the necessary electrical properties to build supercapacitors by themselves and have to be combined with other materials to reach their full potential. In this study, carbon-based 3D-printed carbon electrodes (3D-PCE) have been combined with two polyoxometalates (that share the same redox cluster) by drop casting of the inorganic cluster mixed with a conducting slurry. The modified electrodes show higher capacitances than reference carbon electrodes showing the exceptional properties of the polyoxometalates. Moreover, the different nature of the polyoxometalate counter ions allows for their distinct deposition, giving rise to a different coverage of the surface of the 3D-PCE. The different coverage and the nature of the interaction of the counter ion with the electrolyte significantly modify the capacitance and resistance of the materials, playing a key role that should not be overlooked during their preparation.

Original languageEnglish
Article numbere202201490
JournalChemSusChem
Volume15
Issue number23
DOIs
Publication statusPublished - 2022 Dec 7

Bibliographical note

Funding Information:
M. P. acknowledges the financial support of the Grant Agency of the Czech Republic (EXPRO: 19-26896X). K. G. acknowledges funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska–Curie grant agreement (No. 894457–MotionESt). The authors acknowledge CzechNanoLab Research Infrastructure supported by LM2018110 MEYS CR 2020–2022.

Funding Information:
M. P. acknowledges the financial support of the Grant Agency of the Czech Republic (EXPRO: 19‐26896X). K. G. acknowledges funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska–Curie grant agreement (No. 894457–MotionESt). The authors acknowledge CzechNanoLab Research Infrastructure supported by LM2018110 MEYS CR 2020–2022.

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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