PEDOT:PSS-glued MoO₃ nanowire network for all-solid-state flexible transparent supercapacitors

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Flexible transparent supercapacitors (FTSCs) are crucial for transparent electronics.
• Achieving high areal capacitance without compromising optical transparency remains a challenge.

Purpose of the Study:

• To develop high-performance FTSCs with excellent optical transparency and energy storage.
• To investigate a novel electrode architecture for enhanced supercapacitor performance.

Main Methods:

• Fabrication of FTSC electrodes using Ag nanofiber (AgNF) networks decorated with MoO3 nanowires.
• Utilizing poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as a conductive glue.
• Characterization of electrochemical performance, optical transmittance, and cycling stability.

Main Results:

• The AgNFs/MoO3/PEDOT:PSS (AMP) electrode achieved 82.8% transmittance and 15.7 mF cm-2 areal capacitance.
• The electrode demonstrated superior performance compared to existing transparent conductive films.
• The device maintained 92.4% capacitance after 11,000 cycles and exhibited good mechanical robustness.

Conclusions:

• The developed AMP electrode material offers a promising solution for high-performance FTSCs.
• The unique architecture enhances electron transport and energy storage capabilities.
• These FTSCs hold significant potential for integration into next-generation transparent electronic devices.