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Issue 31, 2018
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High performance capacitive deionization using modified ZIF-8-derived, N-doped porous carbon with improved conductivity

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Abstract

Zeolitic imidazolate framework (ZIF) composite-derived carbon exhibiting large surface area and high micropore volume is demonstrated to be a promising electrode material for the capacitive deionization (CDI) application. However, some inherent serious issues (e.g., low electrical conductivity, narrow pore size, relatively low pore volume, etc.) are still observed for nitrogen-doped porous carbon particles, which restrict their CDI performance. To solve the above-mentioned problems, herein, we prepared gold-nanoparticle-embedded ZIF-8-derived nitrogen-doped carbon calcined at 800 °C (Au@NC800) and PEDOT doped-NC-800 (NC800-PEDOT). The newly generated NC800-PEDOT and Au@NC800 electrodes exhibited notably increased conductivity, and they also achieved high electrosorption capacities of 16.18 mg g−1 and 14.31 mg g−1, respectively, which were much higher than that of NC800 (8.36 mg g−1). Au@NC800 and NC800-PEDOT can be promisingly applicable as highly efficient CDI electrode materials.

Graphical abstract: High performance capacitive deionization using modified ZIF-8-derived, N-doped porous carbon with improved conductivity

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Supplementary files

Article information


Submitted
20 Mar 2018
Accepted
15 May 2018
First published
16 May 2018

Nanoscale, 2018,10, 14852-14859
Article type
Paper

High performance capacitive deionization using modified ZIF-8-derived, N-doped porous carbon with improved conductivity

Y. Li, J. Kim, J. Wang, N. Liu, Y. Bando, A. A. Alshehri, Y. Yamauchi, C. Hou and K. C.-W. Wu, Nanoscale, 2018, 10, 14852
DOI: 10.1039/C8NR02288G

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