KOH-Activated Hollow ZIF-8 Derived Porous Carbon: Nanoarchitectured Control for Upgraded Capacitive Deionization and Supercapacitor
Article
Kim, Minjun, Xu, Xingtao, Xin, Ruijing, Earnshaw, Jacob, Ashok, Aditya, Kim, Jeonghun, Park, Teahoon, Nanjundan, Ashok Kumar, El-Said, Waleed A., Yi, Jin Woo, Na, Jongbeom and Yamauchi, Yusuke. 2021. "KOH-Activated Hollow ZIF-8 Derived Porous Carbon: Nanoarchitectured Control for Upgraded Capacitive Deionization and Supercapacitor." ACS Applied Materials and Interfaces. 13 (44), pp. 52034-52043. https://doi.org/10.1021/acsami.1c09107
Article Title | KOH-Activated Hollow ZIF-8 Derived Porous Carbon: Nanoarchitectured Control for Upgraded Capacitive Deionization and Supercapacitor |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Kim, Minjun, Xu, Xingtao, Xin, Ruijing, Earnshaw, Jacob, Ashok, Aditya, Kim, Jeonghun, Park, Teahoon, Nanjundan, Ashok Kumar, El-Said, Waleed A., Yi, Jin Woo, Na, Jongbeom and Yamauchi, Yusuke |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 13 (44), pp. 52034-52043 |
Number of Pages | 10 |
Year | 2021 |
Publisher | American Chemical Society |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.1c09107 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.1c09107 |
Abstract | Herein, the synergistic effects of hollow nanoarchitecture and high specific surface area of hollow activated carbons (HACs) are reported with the superior supercapacitor (SC) and capacitive deionization (CDI) performance. The center of zeolite imidazolate framework-8 (ZIF-8) is selectively etched to create a hollow cavity as a macropore, and the resulting hollow ZIF-8 (HZIF-8) is carbonized to obtain hollow carbon (HC). The distribution of nanopores is, subsequently, optimized by KOH activation to create more nanopores and significantly increase specific surface area. Indeed, as-prepared hollow activated carbons (HACs) show significant improvement not only in the maximum specific capacitance and desalination capacity but also capacitance retention and mean desalination rates in SC and CDI, respectively. As a result, it is confirmed that well-designed nanoarchitecture and porosity are required to allow efficient diffusion and maximum electrosorption of electrolyte ions. |
Keywords | capacitive deionization; nanoarchitecture; ZIF-8; hollow carbon; hierarchically porous; supercapacitor; KOH activation |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 3402. Inorganic chemistry |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
National Institute for Materials Science, Japan | |
Yonsei University, Korea | |
Korea Institute of Materials Science, Republic of Korea | |
University of Jeddah, Saudi Arabia | |
Assiut University, Egypt |
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https://research.usq.edu.au/item/z2307/koh-activated-hollow-zif-8-derived-porous-carbon-nanoarchitectured-control-for-upgraded-capacitive-deionization-and-supercapacitor
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