Nitrogen-doped porous carbon tubes composites derived from metal-organic framework for highly efficient capacitive deionization

被引：38

作者：

Zhao, Yang ^{[1
,2
]}

Luo, Guoming ^{[1
]}

Zhang, Luyun ^{[1
]}

Gao, Lixin ^{[1
]}

Zhang, Daquan ^{[1
,2
]}

Fan, Zhifeng ^{[3
]}

机构：

[1] Shanghai Univ Elect Power, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China

[2] Shanghai Univ Elect Power, Shanghai Engn Res Ctr Energy Saving Heat Exchange, Shanghai 200090, Peoples R China

[3] Shanghai Elect Grp Co LTD, Water Co, Shanghai 200090, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2020年 / 331卷

关键词：

Electrospinning; Metal-organic framework; Carbon tubes; Hierarchical pore; Capacitive deionization; BACTERIAL-CELLULOSE; GRAPHENE COMPOSITES; WATER DESALINATION; NANOFIBER AEROGELS; ACTIVATED CARBON; BRACKISH-WATER; PERFORMANCE; ELECTRODES; POLYHEDRA; NANOPARTICLES;

D O I：

10.1016/j.electacta.2019.135420

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrode materials with high electrosorption capacity and stable cycling performance are desired by the capacitive deionization (CDI) process. A novel CDI electrode is prepared by developing the nitrogen-doped porous carbon tubes composite (PCT-N) material. It consists of interconnected tubular network construction and hierarchical porous structure. The electrospun polyacrylonitrile/zinc acetate (PAN/Zn(Ac)(2)) nanofibers coated with a layer of zeolitic imidazolate framework (ZIF, a subfamily of metal-organic frameworks) nanocrystals are used as precursors for carbonization. The prepared PCT-N material has high nitrogen-doping amount and hollow macroporous structure with lateral mesopores. It has advantages of excellent electrical conductivity, higher specific surface area and larger total pore volume. The material exhibits a salt adsorption capacity of 16.7 mg g(-1) in 500 mg L-1 initial NaCl solution, and shows good cycle stability over 100 cycles. Such a PCT-N electrode provides a promising alternative candidate for developing CDI technology. (c) 2019 Elsevier Ltd. All rights reserved.

引用

页数：10

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