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Biochar for supercapacitor electrodes: Mechanisms in aqueous electrolytes

Ma, Caiyu; Tang, Longnian; Cheng, Haiyun; Li, Zhuangnan; Li, Wenyao; He, Guanjie; (2024) Biochar for supercapacitor electrodes: Mechanisms in aqueous electrolytes. Battery Energy , Article e20230058. 10.1002/bte2.20230058. (In press). Green open access

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Abstract

The utilization of biomass materials that contain abundant carbon–oxygen/nitrogen functional groups as precursors for the synthesis of carbon materials presents a promising approach for energy storage and conversion applications. Porous carbon materials derived from biomass are commonly employed as electric‐double‐layer capacitors in aqueous electrolytes. However, there is a lack of detailed discussion and clarification regarding the kinetics analysis and energy storage mechanisms associated with these materials. This study focuses on the modification of starch powders through the KOH activation process, resulting in the production of porous carbon with tunable nitrogen/oxygen functional groups. The kinetics and energy storage mechanism of this particular material in both acid and alkaline aqueous electrolytes are investigated using in situ attenuated total reflectance‐infrared in a three‐electrode configuration.

Type: Article
Title: Biochar for supercapacitor electrodes: Mechanisms in aqueous electrolytes
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/bte2.20230058
Publisher version: http://dx.doi.org/10.1002/bte2.20230058
Language: English
Additional information: © 2024 The Authors. Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: biomass carbon, electrode, in situ ATR-IR, supercapacitor
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10187086
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