Flexible supercapacitor electrodes based on real metal-like cellulose papers
Yongmin Ko1, Minseong Kwon1, Wan Ki Bae2
1Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
Nature Communications
|September 16, 2017
Summary
Researchers developed metallic cellulose paper electrodes for flexible supercapacitors. This novel approach enhances energy storage performance and reduces internal resistance for advanced wearable electronics.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Flexible supercapacitors require efficient integration of conductive and charge storage materials.
- Existing flexible electrodes often face challenges with contact resistance and limited surface area.
Purpose of the Study:
- To develop high-performance flexible supercapacitor electrodes using metallic cellulose paper.
- To improve energy storage capacity and power density in flexible devices.
Main Methods:
- Utilized ligand-mediated layer-by-layer assembly to minimize nanoparticle contact resistance.
- Converted insulating cellulose paper into a porous metallic paper acting as a current collector and nanoparticle reservoir.
- Engineered alternating structures of metal and pseudocapacitive nanoparticles on the metallic paper.
Main Results:
- Achieved significantly reduced internal resistance and enhanced areal capacitance and rate capability.
- Metallic paper electrodes demonstrated superior performance compared to conventional paper or textile-based supercapacitors.
- Maximum power and energy densities reached 15.1 mW cm⁻² and 267.3 μWh cm⁻², respectively.
Conclusions:
- Ligand-mediated assembly offers an effective strategy for creating high-performance metallic paper electrodes.
- This method enables the development of advanced flexible supercapacitors for portable and wearable electronics.
- The approach shows potential for broader applications in energy storage device fabrication.
