KOH-activated micrometer-thick amorphous carbon nanofoam as a binder-free supercapacitor electrode with high-rate performance

Subrata Ghosh; Yifan Zhang; Giacomo Pagani; Raffaella Suriano; Marco Agozzino; Agnieszka Jastrzębska; Carlo S. Casari

doi:10.1039/D5CC01916H

KOH-activated micrometer-thick amorphous carbon nanofoam as a binder-free supercapacitor electrode with high-rate performance†

Subrata Ghosh,

*^ab Yifan Zhang,^a Giacomo Pagani,

^a Raffaella Suriano,

^c Marco Agozzino,

^a Agnieszka Jastrzębska^b and Carlo S. Casari

*^a

Author affiliations

* Corresponding authors

^a Micro and Nanostructured Materials Laboratory – NanoLab, Department of Energy, Politecnico di Milano, via Lambruschini, Milano, Italy
E-mail: carlo.casari@polimi.it

^b Faculty of Mechatronics, Warsaw University of Technology, św. A. Boboli 8, Warsaw 02-525, Poland
E-mail: subrata.ghosh@pw.edu.pl

^c Laboratory of Chemistry and Characterization of Innovative Polymers (ChIPLab), Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

Abstract

We demonstrate an aqueous supercapacitor based on self-standing, porous, hydrophilic, and 26-μm-thick activated carbon nanofoam. The device delivers an areal (volumetric) capacitance of 95.4 mF/cm² (18.3 F/cm³) at 2 mA with retention of 103% at 20 mA and achieves a voltage of 1 V, superior compared to pristine and annealed examples.

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DOI: https://doi.org/10.1039/D5CC01916H
Article type: Communication
Submitted: 05 Apr 2025
Accepted: 09 Jul 2025
First published: 14 Jul 2025
This article is Open Access

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Chem. Commun., 2025, Advance Article

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KOH-activated micrometer-thick amorphous carbon nanofoam as a binder-free supercapacitor electrode with high-rate performance

S. Ghosh, Y. Zhang, G. Pagani, R. Suriano, M. Agozzino, A. Jastrzębska and C. S. Casari, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC01916H

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Chemical Communications

KOH-activated micrometer-thick amorphous carbon nanofoam as a binder-free supercapacitor electrode with high-rate performance†

Abstract

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KOH-activated micrometer-thick amorphous carbon nanofoam as a binder-free supercapacitor electrode with high-rate performance

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