Flexible Solid-State Supercapacitor Based on a Metal-Organic Framework Interwoven by Electrochemically-Deposited PANI
Lu Wang1, Xiao Feng1, Lantian Ren1
1†Key Laboratory of Cluster Science, Ministry of Education of China, School of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, P. R. China.
Journal of the American Chemical Society
|April 14, 2015
Summary
Researchers improved supercapacitor performance by combining metal-organic frameworks (MOFs) with conductive polyaniline (PANI). This strategy enhances energy storage by overcoming MOFs
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Metal-organic frameworks (MOFs) show promise as supercapacitor electrodes.
- Poor electrical conductivity in MOFs limits their capacitance and rate performance.
Purpose of the Study:
- To enhance the conductivity and performance of MOF-based supercapacitors.
- To develop a flexible, conductive porous electrode by interweaving MOF crystals with polyaniline (PANI).
Main Methods:
- Synthesized cobalt-based MOF crystals (ZIF-67) on carbon cloth (CC).
- Electrochemically deposited polyaniline (PANI) onto the MOF-CC structure.
- Fabricated a flexible conductive porous electrode (PANI-ZIF-67-CC).
Main Results:
- The PANI-ZIF-67-CC electrode exhibited an exceptional areal capacitance of 2146 mF cm(-2) at 10 mV s(-1).
- A symmetric flexible solid-state supercapacitor was successfully assembled and tested.
Conclusions:
- Interweaving MOFs with electrochemically deposited PANI effectively reduces bulk electric resistance.
- This strategy offers a new pathway for designing advanced MOF-based supercapacitors and electrochemical devices.
