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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
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Non-metallic element modified metal-organic frameworks as high-performance electrodes for all-solid-state asymmetric
Liguo Yue1, Hao Guo1, Xiao Wang1
1Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, Key Lab of Eco-Environments Related Polymer Materials of MOE, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China.
Journal of Colloid and Interface Science
|December 30, 2018
Summary
Non-metallic element modification of metal-organic frameworks (MOFs) enhances supercapacitor performance. These novel MOF materials demonstrate high specific capacitance and excellent cycle stability for advanced energy storage applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Supercapacitors are crucial for energy storage.
- Metal-organic frameworks (MOFs) offer potential for supercapacitor electrodes.
- Improving MOF structural stability and electrochemical performance is key.
Purpose of the Study:
- To investigate non-metallic element modified MOFs for supercapacitors.
- To explore the impact of non-metallic modification on MOF structure and performance.
- To develop advanced electrode materials for practical supercapacitor applications.
Main Methods:
- Synthesized three-dimensional MOFs modified with non-metallic elements.
- Characterized the flower cluster structure and stability of modified MOFs.
- Evaluated electrochemical performance using cyclic voltammetry and galvanostatic charge-discharge techniques.
Main Results:
- Modified MOFs exhibited a novel flower cluster structure, enhancing stability.
- Materials modified by vulcanizing agents showed a specific capacitance of 1453.5 F/g at 1 A/g.
- Assembled asymmetric supercapacitor (S@Ni-MOF//AC) achieved high energy density (56.85 Wh/kg) and excellent cycle stability (86.67% retention after 20,000 cycles).
Conclusions:
- Non-metallic element modification effectively improves MOF structural integrity and electrochemical properties.
- Modified MOFs compensate for crystal defects, leading to superior supercapacitor performance.
- These materials show significant promise as electrode materials for practical supercapacitor applications.
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