A dual-control strategy based on electrode material and electrolyte optimization to construct an asymmetric supercapacitor with high energy density

Xianyu Chu; Fanling Meng; Wei Zhang; He Yang; Xu Zou; Sebastian Molin; Piotr Jasiński; Xiangcheng Sun; Weitao Zheng

doi:10.1088/1361-6528/ac4eb1

A dual-control strategy based on electrode material and electrolyte optimization to construct an asymmetric supercapacitor with high energy density

Abstract

Metal-organic frames (MOFs) are regarded as excellent candidates for supercapacitors that have attracted much attention because of their diversity, adjustability and porosity. However, both poor structural stability in aqueous alkaline electrolytes and the low electrical conductivity of MOF materials constrain their practical implementation in supercapacitors. In this study, bimetallic CoNi-MOF were synthesized to enhance the electrical conductivity and electrochemical activity of nickel-based MOF, as well as the electrochemical performance of the CoNi-MOF in multiple alkaline electrolytes was investigated. The CoNi-MOF/active carbon device, as-fabricated with a 1 M KOH electrolyte, possesses a high energy density of 35 W h kg−1 with a power density of 1450 W kg−1, exhibiting outstanding cycling stability of 95% over 10,000 cycles. The design of MOF-based electrode materials and the optimization selection of electrolytes pave the way for constructing high-performance supercapacitors.

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Authors (9)

Xianyu Chu
- Jilin University
Fanling Meng
- Jilin University
Wei Zhang
- Jilin University
He Yang
- Jilin University
Xu Zou
- Jilin University
Sebastian Molin dr hab. inż.
Piotr Jasiński prof. dr hab. inż.
Xiangcheng Sun
- Shandong Nanshan Institute of Science and Technology
Weitao Zheng
- Jilin University

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Keywords

ASYMMETRIC SUPERCAPACITOR

Details

Category:

Articles

Type:

artykuły w czasopismach

Published in:

NANOTECHNOLOGY no. 33,
ISSN: 0957-4484

Language:

English

Publication year:

2022

Bibliographic description:

Chu X., Meng F., Zhang W., Yang H., Zou X., Molin S., Jasiński P., Sun X., Zheng W.: A dual-control strategy based on electrode material and electrolyte optimization to construct an asymmetric supercapacitor with high energy density// NANOTECHNOLOGY -Vol. 33,iss. 20 (2022), s.205403-

DOI: