Engineering the Membrane/Electrode Interface To Improve the Performance of Solid-State Supercapacitors

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Solid-state supercapacitors offer advanced energy storage solutions.
• Improving electrode-electrolyte interfaces is crucial for supercapacitor performance.

Purpose of the Study:

• To investigate the impact of a porous TiO2 interface layer on solid-state supercapacitor performance.
• To enhance ion transfer and charge/discharge dynamics.

Main Methods:

• Fabrication of a 450 nm porous TiO2 interface layer.
• Electrochemical characterization of supercapacitors with and without the interface layer.
• Analysis of charge transfer resistance and ion transport.

Main Results:

• The TiO2 interface layer reduced charge transfer resistance.
• Improved ion transfer across the electrode-electrolyte interface was observed.
• Significant enhancement in charge/discharge dynamics and areal capacitance (from 45.3 to 111.1 mF cm(-2)).

Conclusions:

• The porous TiO2 interface layer effectively improves energy storage in solid-state supercapacitors.
• This strategy enhances interfacial properties, leading to superior electrochemical performance.