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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received September 15, 2022
Revised October 12, 2022
Accepted October 26, 2022

Acknowledgements: This study was supported by the Research Program funded by the SeoulTech (Seoul National University of Science and Technology).

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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N-doped mesoporous activated carbon derived from protein-rich biomass for energy storage applications

Kue-Ho Kim Yun-Jae Song Hyo-Jin Ahn^†

Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Korea

hjahn@seoultech.ac.kr

Korean Journal of Chemical Engineering, May 2023, 40(5), 1071-1076(6), 10.1007/s11814-022-1325-7

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Abstract

Biomass-derived activated carbon has attracted global attention for supercapacitor applications owing to the limitations of depletable resources and the high cost of conventional activated carbon manufacturing processes. Activated carbon for energy storage requires a large surface area for performing a high energy density, which is the main challenge for biomass-derived activated carbon. Here, we suggest a protein-rich mealworm as a competitive raw material for the activated carbon manufacturing process. Mealworm-based N-doped mesoporous carbon was developed through the synergistic effect of intrinsic amino acids and fatty acids in the mealworm and a KOH activation process. The mealworm-based N-doped mesoporous carbon electrode exhibited a competitive specific capacity at both low and high current densities (154.8 F/g at a current density of 0.2 A/g and 137 F/g at a current density of 5.0 A/g) owing to the high specific surface area (2,470.5 m2 /g) and N-doped carbon structure. This superior energy storage capability contributed to its optimized mesoporous morphology and an N-doped carbon structure, which was generated during the KOH activation process.

Keywords

Supercapacitors Structure Engineering Mesoporous Carbon Doped Carbon, Biomass

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