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22-04-2024 | Original Article

PVP/PAN-derived porous carbon fiber for zinc-ion hybrid supercapacitors

Authors: Shu-Hua Yang, Wen-Qing Fu, Yan-Wei Cui, Bing-Qiang Cao

Published in: Rare Metals

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Abstract

Porous carbon fibers are promising cathodes for zinc-ion hybrid supercapacitors (ZHSs) owing to their abundant active sites, great conductivity, and stable physical and chemical properties. However, designing a proper preparation technique to regulate the microstructure of carbon fibers still remains a great challenge. Here, a polyvinylpyrrolidone/po-lyacrylonitrile (PVP/PAN)-derived porous carbon fiber is developed via the PVP/PAN blend electrospinning and hydrothermal selective PVP removal strategy. The hydrothermal selective PVP removal strategy can effectively avoid a cross-linking between PVP and PAN during the traditional stabilization at air atmosphere. In PVP/PAN-derived porous carbon fiber, the sufficient micropores provide abundant space for the Zn2+ storage, whereas the proper mesopores contribute to the fast ion transfer. These hierarchical porous structures endow ZHSs with high specific capacity and high-rate performance. The ZHS assembled with the optimal PVP/PAN-derived porous carbon fiber (PVP-PANC-0.8) displays an outstanding specific capacity of 208 mAh·g−1, high rate capability (49.5%) from 0.5 to 5 A·g−1, and 72.25% capacity retention after 10,000 cycles at 0.5 A·g−1.

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Appendix
Available only for authorised users
Literature
[26]
go back to reference Iksoo C, Reneker DH, Hao F, Xiaoyan F, Deitzel J, Tan NB, Kearns K. Carbon nanofibers from polyacrylonitrile and mesophase pitch. J Adv Mater. 1999;31(1):36. Iksoo C, Reneker DH, Hao F, Xiaoyan F, Deitzel J, Tan NB, Kearns K. Carbon nanofibers from polyacrylonitrile and mesophase pitch. J Adv Mater. 1999;31(1):36.
Metadata
Title
PVP/PAN-derived porous carbon fiber for zinc-ion hybrid supercapacitors
Authors
Shu-Hua Yang
Wen-Qing Fu
Yan-Wei Cui
Bing-Qiang Cao
Publication date
22-04-2024
Publisher
Nonferrous Metals Society of China
Published in
Rare Metals
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-024-02682-0

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