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Open AccessArticle
Tailoring Macro/Meso/Microporous Structures of Cellophane Noodle-Derived Activated Carbon for Electric Double-Layer Capacitors
by
Hyeong-Rae Kim
Hyeong-Rae Kim
Myeong-Hun Jo
Myeong-Hun Jo
Hyo-Jin Ahn
Hyo-Jin Ahn
Hyo-Jin Ahn is currently a professor in Material Science and Engineering at the Seoul National of of [...]
Hyo-Jin Ahn is currently a professor in Material Science and Engineering at the Seoul National University of Science and Technology, Republic of Korea. He received a PhD in Materials Science and Engineering from the Gwangju Institute of Science and Technology, Republic of Korea, in 2007. He worked as a postdoctoral researcher at the Max Planck Institute of Colloids and Interfaces (2007–2009) and as a research professor at the University of Oxford (2018). His current research is focused on key nanomaterials for advanced energy storage/conversion systems and electrocatalysts, such as lithium-ion batteries, lithium-air batteries, supercapacitors, redox-flow batteries, oxygen redox reaction, and electrochromic devices.
Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Materials 2024, 17(14), 3474; https://doi.org/10.3390/ma17143474 (registering DOI)
Submission received: 18 June 2024
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Revised: 11 July 2024
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Accepted: 12 July 2024
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Published: 13 July 2024
Abstract
To address the bottleneck associated with the slow ion transport kinetics observed in the porosity of activated carbons (ACs), hierarchically structured pore sizes were introduced on ACs used for electric double-layer capacitors (EDLCs) to promote ion transport kinetics under fast-rate charge–discharge conditions. In this study, we synthesized cellophane noodle-derived activated carbon (CNAC) with tailored porous structures, including the pore volume fraction of macro/meso/micropores and the specific surface area. The porous structures were effectively modulated by adjusting the KOH concentration during chemical activation. In addition, optimized KOH activation in CNAC modulated the chemical bonding ratios of C=O, pyrrolic-N, and graphitic-N. Given the hierarchically designed porous structure and chemical bonding states, the CNAC fabricated with optimized KOH activation exhibited a superior ultrafast rate capability in EDLCs (132.0 F/g at 10 A/g).
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MDPI and ACS Style
Kim, H.-R.; Jo, M.-H.; Ahn, H.-J.
Tailoring Macro/Meso/Microporous Structures of Cellophane Noodle-Derived Activated Carbon for Electric Double-Layer Capacitors. Materials 2024, 17, 3474.
https://doi.org/10.3390/ma17143474
AMA Style
Kim H-R, Jo M-H, Ahn H-J.
Tailoring Macro/Meso/Microporous Structures of Cellophane Noodle-Derived Activated Carbon for Electric Double-Layer Capacitors. Materials. 2024; 17(14):3474.
https://doi.org/10.3390/ma17143474
Chicago/Turabian Style
Kim, Hyeong-Rae, Myeong-Hun Jo, and Hyo-Jin Ahn.
2024. "Tailoring Macro/Meso/Microporous Structures of Cellophane Noodle-Derived Activated Carbon for Electric Double-Layer Capacitors" Materials 17, no. 14: 3474.
https://doi.org/10.3390/ma17143474
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