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High-Performance Flexible In-Plane Micro-Supercapacitors Based on Vertically Aligned CuSe@Ni(OH)2 Hybrid Nanosheet
Jiangfeng Gong1, Jing-Chang Li1, Jing Yang2
1College of Science , Hohai University , Nanjing 210098 , P. R. China.
ACS Applied Materials & Interfaces
|October 19, 2018
Summary
This study presents vertically aligned CuSe@Ni(OH)2 hybrid nanosheet films for high-performance flexible in-plane micro-supercapacitors (MSCs). The novel nanohybrids demonstrate superior energy density and excellent cycling stability.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Flexible in-plane micro-supercapacitors (MSCs) require high-performance electrode materials.
- Integrating two-dimensional (2D) nanostructures like CuSe and Ni(OH)2 with controlled orientation and porous frameworks for MSCs remains challenging.
Purpose of the Study:
- To develop vertically aligned CuSe@Ni(OH)2 hybrid nanosheet films for advanced flexible in-plane MSCs.
- To investigate the electrochemical performance and properties of these novel nanohybrids in energy storage devices.
Main Methods:
- Template-free sequential electrodeposition of CuSe@Ni(OH)2 hybrid nanosheet films on interdigital electrodes.
- Fabrication of in-plane MSCs using polyvinyl alcohol-LiCl gel as separator and solid electrolyte.
Main Results:
- The hybrid nanosheet films exhibit hierarchical open channels and a 3D ion/electron transport pathway.
- Achieved high volumetric specific capacitance (38.9 F cm⁻³), energy density (5.4 mW h cm⁻³), and power density (833.2 mW cm⁻³).
- Demonstrated excellent cycling performance, flexibility, and mechanical stability, outperforming pure CuSe nanosheets and other reported materials.
Conclusions:
- The developed CuSe@Ni(OH)2 hybrid nanosheet films offer a promising solution for high-performance flexible in-plane MSCs.
- This work provides insights into optimizing 2D materials for energy storage and promotes the development of flexible energy storage systems.
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