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We present the energy performance of ultrahigh surface area nanoporous carbon materials having abundant hierarchical micro/mesopores obtained by in situ potassium carbonate (K2CO3) activation of polyacrylamide (PAM) hydrogel. The resulting nanoporous carbon materials obtained by the carbonization of the hydrogel in the temperature range 600 to 900 °C possess high BET surface areas up to ca. 3038 m2 g-1 for the material prepared at 800 °C. Electron microscopy analyses revealed the formation of micro/mesoporous amorphous carbon structures. Surface composition and nitrogen and oxygen doping of the carbon matrix were verified by X-ray photoelectron spectroscopy (XPS).

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  This is a pre-copyedited, author-produced version of an article accepted for publication in Bulletin of the Chemical Society of Japan following peer review. The version of record Nadiia Velychkivska, Anna Golunova, Viktoria Oleksa, Jiří Brus, Pragati A Shinde, Abin Sebastian, Renzhi Ma, Katsuhiko Ariga, Yusuke Yamauchi, Jonathan P Hill, Jan Labuta, Lok Kumar Shrestha, Nanoarchitectonics of hydrogel-derived ultrahigh surface area nanoporous carbon materials with enhanced supercapacitance performance, Bulletin of the Chemical Society of Japan, Volume 98, Issue 3, March 2025, uoaf011 is available online at: https://doi.org/10.1093/bulcsj/uoaf011.

Keyword: hierarchically porous carbon, polyacrylamide (PAM) hydrogel, supercapacitor

Date published: 2025-03-04

Publisher: Oxford University Press (OUP)

Journal:

• Bulletin of the Chemical Society of Japan (ISSN: 00092673) vol. 98 issue. 3

Funding:

• Japan Society for the Promotion of Science P21764
• JSPS KAKENHI JP22KF0385
• JST-ERATO Yamauchi Materials Space-Tectonics Project JPMJER2003
• Queensland Node of the Australian National Fabrication Facility

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5379

First published URL: https://doi.org/10.1093/bulcsj/uoaf011

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Updated at: 2026-02-21 12:30:07 +0900

Published on MDR: 2026-02-21 08:41:24 +0900