CNT@SrTiO3 Nanocomposites Synthesized by In Situ Reaction for a High-Performance Flexible Supercapacitor
Yue Cao1,2, Shijingmin Li1,2, Jinhua Zhong3
1South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China.
ACS Omega
|May 27, 2024
Summary
This study developed high-performance flexible supercapacitors using carbon nanotube (CNT) and strontium titanate (STO) nanocomposite films. The optimized CNT@STO material shows excellent potential for wearable energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Flexible supercapacitors are crucial for wearable electronics.
- Developing high-performance energy storage materials remains a challenge.
Purpose of the Study:
- To synthesize CNT@SrTiO3 nanocomposite films for high-performance flexible supercapacitors.
- To optimize the synthesis parameters for enhanced electrochemical properties.
Main Methods:
- In situ synthesis of CNT@SrTiO3 nanocomposite films via thermal decomposition of hybrid polymer precursors.
- Electrochemical characterization of the nanocomposite films.
- Fabrication and testing of flexible supercapacitors.
Main Results:
- The CNT@STO nanocomposite films exhibited enhanced electrochemical performance due to improved ion transport and storage at the CNT-STO interface.
- Optimal performance was achieved with a CNT@STO film containing 25% STO, synthesized at 700 °C, yielding an areal capacitance of 6682 mF·cm⁻².
- The flexible supercapacitor demonstrated a high energy density of 430.2 μWh·cm⁻² and excellent cycle life.
Conclusions:
- The developed CNT@STO nanocomposite films offer a promising approach for advanced flexible energy storage.
- This study provides a novel strategy for designing materials for next-generation wearable devices.
