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Interdigitated supercapacitor with double-layer active material prepared by sacrificial layer method
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DOI：10.1016/j.jpowsour.2024.234476.png)
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摘要
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Increasing the surface area of active materials is a crucial approach to enhance the capacity of supercapacitors. In this study, we present an interdigitated supercapacitor featuring a double-layer active material prepared using a sacrificial layer method. The replacement of the insulating substrate with a gel electrolyte facilitates ion motion between the active electrodes. Finite element analysis (FEA) and electrochemical experiments confirm that the utilization of double-layer active material can significantly improve the capacity (1.5-1.85 times higher than traditional structures). The electrochemical performance of the three active materials has been significantly improved after using the double-layer active material structure, which proves that the method in this paper has strong material compatibility. Furthermore, an interdigital supercapacitor (ISC) is fabricated using electrodes with double-layer active material through the sacrificial layer method and its electrochemical performance is evaluated. At a scan rate of 10 mV & sdot;s-1, ISC exhibits an impressive area-specific capacitance as high as 68.4 mF & sdot;cm-2. Remarkably, ISC can maintain stable power output even under extreme deformation and fatigue testing conditions. This strategy involving interdigitated supercapacitors with double-layer active materials prepared via the sacrificial layer method presents a promising solution for flexible energy storage devices.
Keyword:
Silk-screen printing
Sacrificial layer method
Interdigital electrode
Capacity enhancement
Bilayer active material
Supercapacitor
期刊
IF:
7.9
论文数:
3.7W
被引数:
15.0W
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