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Gravure-printed interdigital microsupercapacitors on a flexible polyimide substrate using crumpled graphene ink
Qi Zhang1, Lei Huang, Quanhong Chang
1Joint Lab with Wuhu Token for Graphene Electrical Materials and Application, Department of Physics, Shanghai Normal University, Guilin Road 100, Shanghai 200234, People's Republic of China.
Nanotechnology
|February 11, 2016
Summary
This study presents a novel method for creating flexible microsupercapacitors using gravure-printed crumpled graphene. These devices offer high energy and power density, demonstrating potential for powering electronic displays.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Graphene's unique properties are hindered by restacking.
- Developing efficient energy storage devices on flexible substrates is crucial.
Purpose of the Study:
- To demonstrate gravure printing of crumpled graphene for interdigitated electrodes.
- To fabricate flexible interdigital microsupercapacitors (MSCs) with enhanced performance.
Main Methods:
- Synthesized crumpled graphene ink using Mg(OH)2 nanosheets as nanospacers.
- Utilized gravure printing to create porous interdigitated electrode patterns on polyimide.
- Fabricated interdigital microsupercapacitors.
Main Results:
- Achieved highly porous graphene patterns preventing restacking and enhancing ion transport.
- Demonstrated high energy density (1.41 mW h cm⁻³) and power density (0.35 mW h cm⁻³).
- Successfully powered a liquid crystal display using the fabricated MSCs.
Conclusions:
- Gravure printing of crumpled graphene is an effective method for flexible MSC fabrication.
- The developed MSCs exhibit excellent electrochemical performance.
- The technology shows promise for portable and flexible energy storage applications.
