Yanzhong Wang, Yuexin Liu, Chao Wang, Hu Liu, Jiaoxia Zhang, Jing Lin, Jincheng Fan, Tao Ding, Jong E. Ryu and Zhanhu Guo
1 School of Materials Science and Engineering, North University of China, Taiyuan 030051 China
2 Advanced energy materials and system institute, North University of China, Taiyuan 030051 China
3 Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37966 USA
4 Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China
5 College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, China
6 College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
7 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
8 Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695USA
In situ synthesis of NiCo based metal-organic framework (MOF) nanosheets and the exfoliation of Ti3C2Tx into isolated nanosheets (MXene), called, NiCo-MOF/Ti3C2Tx hybrid nanosheets, are simultaneously achieved by a facile ultrasonic method. This method can effectively avoid the oxidation and restacking of Ti3C2Tx nanosheets, and also make them uniformly disperse on the surface of NiCo-MOF. The formed NiCo-MOF/Ti3C2Tx hybrid nanosheets achieve a high specific capacitance of 815.2 A g-1 at 1 A g-1. The practical asymmetric supercapacitor (ASC) is fabricated using activated carbon and NiCo-MOF/Ti3C2Tx hybrid nanosheets. The ASC device achieves an energy density of 39.5 Wh kg-1 at a power density of 562.5 W kg-1, and also demonstrates a suitable cycling stability with 82.3 % of capacitance retention after 10000 continuous cycles at 5 A g-1. The enhanced electrochemical property of NiCo-MOF/Ti3C2Tx is attributed to the nanosheet-like and mesoporous structure, high electronic conductivity, and synergistic effect of hybrid electroactive components.
Received: 04 Nov 2019
Revised: 21 Dec 2019
Accepted: 06 Jan 2020
Published online: 07 Jan 2020
Article type:
Research Paper
DOI:
10.30919/es8d903
Volume:
9
Page:
50-59
Citation:
Engineered Science, 2020, 9, 50-59
Permissions:
Copyright
Number of downloads:
6518
Citation Information:
30
Description:
Ultrathin NiCo-MOF/Ti3C2Tx demonstrated a capacitance of 815.2 A g-1 and NiCo-MOF/Ti3C2Tx//activated....
Ultrathin NiCo-MOF/Ti3C2Tx demonstrated a capacitance of 815.2 A g-1 and NiCo-MOF/Ti3C2Tx//activated carbon delivered 39.5 Wh kg-1 at 562.5 W kg-1.
This article is cited by 30 publications.
This article is cited by 30 publications.
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