Order-in-disordered ultrathin carbon nanostructure with nitrogen-rich defects bridged by pseudographitic domains for high-performance ion capture.

Liang, Mingxing; Ren, Yifan; Cui, Jun; Zhang, Xiaochen; Xing, Siyang; Lei, Jingjing; He, Mengyao; Xie, Haijiao; Deng, Libo; Yu, Fei; Ma, Jie

Liang, Mingxing; Ren, Yifan; Cui, Jun; Zhang, Xiaochen; Xing, Siyang; Lei, Jingjing; He, Mengyao; Xie, Haijiao; Deng, Libo; Yu, Fei; Ma, Jie.

Afiliación

Liang M; Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
Ren Y; School of Civil Engineering, Kashi University, Kashi, 844000, PR China.
Cui J; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, PR China.
Zhang X; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China.
Xing S; Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
Lei J; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China.
He M; Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
Xie H; College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, PR China.
Deng L; Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
Yu F; Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA.
Ma J; Research Center for Environmental Functional Materials, State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.

Nat Commun ; 15(1): 6437, 2024 Jul 31.

Article en En | MEDLINE | ID: mdl-39085264

ABSTRACT

ABSTRACT

Carbon materials with defect-rich structure are highly demanded for various electrochemical scenes, but encountering a conflict with the deteriorative intrinsic conductivity. Herein, we build a highway-mediated nanoarchitecture that consists of the ordered pseudographitic nanodomains among disordered highly nitrogen-doped segments through a supramolecular self-assembly strategy. The "order-in-disorder" nanosheet-like carbon obtained at 800 °C (O/D NSLC-800) achieves a tradeoff with high defect degree (21.9 at% of doped nitrogen) and compensated electrical conductivity simultaneously. As expected, symmetrical O/D NSLC-800 electrodes exhibit superior capacitive deionization (CDI) performance, including brackish water desalination (≈82 mgNaCl g-1 at a cell voltage of 1.6 V in a 1000 mg L-1 NaCl solution) and reusage of actual refining circulating cooling water, outperforming most of the reported state-of-the-art CDI electrodes. The implanted pseudographitic nanodomains lower the resistance and activation energy of charge transfer, which motivates the synergy of hosting sites of multiple nitrogen configurations. Our findings shed light on electrically conductive nanoarchitecture design of defect-rich materials for advanced electrochemical applications based on molecular-level modulation.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

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