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Dual Functionalized CuMOF-Based Composite for High-Performance Supercapacitors.

Anoop K Gupta, Mohit Saraf, Parimal K Bharadwaj1

  • 1Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208016 , India.

Inorganic Chemistry
|July 26, 2019
PubMed
Summary
This summary is machine-generated.

A novel copper metal-organic framework/reduced graphene oxide composite was developed for energy storage. This composite demonstrates enhanced specific capacitance and cycle life, making it promising for next-generation supercapacitors.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Copper metal-organic frameworks (CuMOFs) offer potential for energy storage but suffer from poor conductivity.
  • Functional groups like amine and trifluoromethyl can enhance stability and interfacial properties.
  • Reduced graphene oxide (rGO) is known for its high conductivity and surface area.

Purpose of the Study:

  • To develop a CuMOF/rGO composite for improved energy storage applications.
  • To investigate the synergistic effects between CuMOF and rGO in the composite.
  • To evaluate the electrochemical performance, specifically specific capacitance and cycle life, of the composite.

Main Methods:

  • Synthesis of a highly porous CuMOF functionalized with amine and trifluoromethyl groups.
  • Fabrication of a CuMOF/rGO composite using a facile ultrasonication technique.
  • Electrochemical characterization of the composite for supercapacitor performance evaluation.

Main Results:

  • The CuMOF/rGO composite (1) exhibited a significantly enhanced specific capacitance of 462 F g⁻¹ at 0.8 A g⁻¹.
  • The composite demonstrated excellent stability with 93.75% capacitance retention after 1000 cycles.
  • Synergistic effects between CuMOF and rGO led to improved conductivity and electrochemical performance.

Conclusions:

  • The developed CuMOF/rGO composite shows great promise as an advanced electrode material for high-performance supercapacitors.
  • The strategy of combining porous MOFs with conductive nanomaterials is effective for energy storage applications.
  • This work highlights a new avenue for designing next-generation energy storage devices.