One-Step Solvothermal Synthesis of Raspberry-like NiCo-MOF for High-Performance Flexible Supercapacitors for a Wide
Wenjing Zhang1, Zohreh Shahnavaz1, Xuehua Yan1,2
1School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, P. R. China.
Inorganic Chemistry
|September 9, 2022
Summary
Researchers developed a novel NiCo-MOF-3 material for supercapacitors, achieving high energy density and excellent flexibility. This advancement offers a promising electrode material for next-generation energy storage devices.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Metal-organic frameworks (MOFs) show promise for supercapacitors but face challenges with conductivity and structure.
- Existing MOF synthesis methods often result in suboptimal dimensional control and electrical properties.
Purpose of the Study:
- To synthesize and characterize a novel NiCo-MOF material for enhanced supercapacitor performance.
- To investigate the electrochemical properties of NiCo-MOF-3 and its application in flexible quasi-solid-state asymmetric supercapacitors.
Main Methods:
- A one-step solvothermal method was employed to fabricate NiCo-MOF materials.
- Electrochemical performance was evaluated, and a flexible asymmetric supercapacitor was assembled using NiCo-MOF-3 as the positive electrode.
Main Results:
- NiCo-MOF-3 exhibited superior electrochemical performance compared to other NiCo-MOFs, with a specific capacitance of 639.8 F/g at 1 A/g.
- The assembled supercapacitor achieved a maximum energy density of 66.3 Wh/kg and a power density of 12,047 W/kg.
- The device demonstrated excellent flexibility and temperature resistance.
Conclusions:
- The synthesized NiCo-MOF-3 possesses a unique 3D spherical raspberry structure beneficial for energy storage.
- The developed electrode material and fabrication method offer significant advantages for advanced supercapacitor applications.
