In situ synthesized PEO/NBR composite ionogels for high-performance all-solid-state supercapacitors
1Department of Earth and Environmental Engineering, Earth Engineering Center, Center for Advanced Materials for Energy and Environment, Columbia University, New York, NY 10027, USA. xichen@columbia.edu.
Chemical Communications (Cambridge, England)
|July 3, 2019
Summary
New composite iongels made from polyethylene oxide (PEO) and nitrile butadiene rubber (NBR) significantly enhance supercapacitor performance. These solid polymer electrolytes improve ion movement, leading to higher capacitance and long-term stability for energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Science
Background:
- Solid polymer electrolytes are crucial for developing safer and more efficient energy storage devices like supercapacitors.
- Improving ion migration kinetics within solid electrolytes is key to enhancing supercapacitor performance.
Purpose of the Study:
- To develop novel composite iongels based on polyethylene oxide (PEO) and nitrile butadiene rubber (NBR) for supercapacitor applications.
- To enhance the ion migration kinetics and overall performance of solid polymer electrolytes.
Main Methods:
- In situ synthesis strategy was employed to create PEO/NBR composite iongels.
- Supercapacitors were fabricated using the developed iongel as the solid polymer electrolyte.
- Electrochemical performance, including specific capacitance and cycling stability, was evaluated.
Main Results:
- The iongel-based supercapacitors achieved a high specific capacitance of 208 F g-1 at a current density of 1 A g-1.
- The supercapacitors demonstrated excellent cycling stability, retaining performance over 10,000 cycles.
- The composite iongel structure facilitated improved ion migration kinetics.
Conclusions:
- PEO/NBR composite iongels are effective solid polymer electrolytes for high-performance supercapacitors.
- The in situ synthesis strategy offers a viable route for creating advanced energy storage materials.
- These findings contribute to the advancement of solid-state energy storage technologies.
