Solid state thin electrolyte to overcome transparency-capacity dilemma of transparent supercapacitor

Area of Science:

• Materials Science
• Energy Storage
• Nanotechnology

Background:

• Transparent supercapacitors (T-SCs) are crucial for portable and transparent electronics.
• The performance of T-SCs is highly dependent on their thickness, creating a trade-off between optical transparency and energy capacity.
• Existing T-SC designs face challenges in balancing these conflicting properties.

Purpose of the Study:

• To develop an all-solid-state T-SC with a controllable fabrication process.
• To overcome the transparency-capacity dilemma in T-SCs.
• To enhance the applicability of T-SCs as core energy storage devices.

Main Methods:

• Fabrication of an all-solid-state T-SC using a sensitively controllable process.
• Optimization of T-SC thickness to balance transparency and capacitance.
• Evaluation of optical transparency and electrochemical performance, including capacitance retention over charge/discharge cycles.

Main Results:

• Achieved an optimal T-SC thickness that balances transparency and energy storage capacity.
• Demonstrated over 60% optical transparency.
• Maintained 80% capacitance retention after 1500 charge/discharge cycles.
• Successfully addressed the transparency-capacity dilemma inherent in T-SC design.

Conclusions:

• The developed T-SC structure effectively resolves the transparency-capacity conflict.
• The optimized T-SC exhibits excellent transparency and long-term cycling stability.
• This advancement significantly broadens the potential applications of T-SCs in next-generation electronic devices.