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Ni(OH)2/CNTs hierarchical spheres for a foldable all-solid-state supercapacitor with high specific energy
Qingqing Qin1, Jiaqin Liu, Wenping Mao
1School of Materials Science and Engineering and Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei, 230009, China. yanjian@hfut.edu.cn ycwu@hfut.edu.cn.
Nanoscale
|April 18, 2018
Summary
Flexible supercapacitors require high energy density and mechanical strength. This study presents a device using Ni(OH)2/CNTs spheres and a PBI-KOH electrolyte, achieving high capacity and energy with excellent flexibility.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Flexible supercapacitors are essential for portable electronics.
- Achieving high energy density and mechanical robustness remains a challenge.
Purpose of the Study:
- To develop a flexible supercapacitor with enhanced energy density and mechanical strength.
- To utilize Ni(OH)2/CNTs hierarchical spheres and a PBI-KOH solid polymer electrolyte.
Main Methods:
- Fabrication of Ni(OH)2/CNTs hierarchical spheres.
- Development of a PBI-KOH solid polymer electrolyte.
- Assembly and testing of the flexible supercapacitor device.
Main Results:
- The supercapacitor achieved a high specific capacity of 854 C g-1.
- The device demonstrated a high specific energy of 50.6 W h kg-1.
- The integrated device exhibited good flexibility under folding tests.
Conclusions:
- Ni(OH)2/CNTs hierarchical spheres and PBI-KOH electrolyte enable high-performance flexible supercapacitors.
- The developed device offers a promising solution for flexible energy storage applications.
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