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Nitrogen and Oxygen Dual-doped Porous Carbon from Nature Macromolecular Chitosan for Fast and Stable Zinc-ion Hybrid Supercapacitors

Authors :
Xiaoman Yang
Peng Huang
Peng Zhao
Shilei Xie
Dong Xie
Shoushan Wang
Faliang Cheng
Source :
Journal of The Electrochemical Society. 170:010508
Publication Year :
2023
Publisher :
The Electrochemical Society, 2023.

Abstract

Zinc ion hybrid capacitors (ZIHCs) with carbon-based material cathodes have shown considerable potential in many energy-related applications since they have the advantages of supercapacitors and batteries. However, these carbon-based materials still suffer from the limitations of low energy density and poor cycle stability as cathodes in ZIHCs because of their low surface areas and unsatisfied chemical structures. Herein, nitrogen and oxygen dual-doped porous carbon materials were prepared in situ by using the precursors of nature macromolecular chitosan with abundant amino and hydroxyl groups. Due to the developed mesopores, solid structures, and fast redox response from the dual-doped N and O heteroatoms, the prepared ZIHCs based on these novel carbon materials show high specific capacity of 100 mAh g−1, outstanding energy density of 172.24 Wh kg−1 and good stability over 20,000 cycles at large charging/discharging current density of 5 A g−1. These findings will contribute greatly to the development of environmentally friendly Zn-based energy devices.

Details

ISSN :
19457111 and 00134651
Volume :
170
Database :
OpenAIRE
Journal :
Journal of The Electrochemical Society
Accession number :
edsair.doi...........64fdb008e739ae666a9ecbf6ac66e3e8
Full Text :
https://doi.org/10.1149/1945-7111/acad31