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Affordable Two-Dimensional Layered Cd(II) Coordination Polymer: High-Performance Pseudocapacitor Electrode Behavior.

Samika Anand1, Sunaja Devi Kalathiparambil Rajendra Pai1, Abhishek Kumar2,3

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|October 14, 2024
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Summary
This summary is machine-generated.

A novel cadmium-based coordination polymer, Cd(DAB), offers excellent performance for supercapacitors. This cost-effective material demonstrates high specific capacitance and long cycle life, paving the way for advanced energy storage solutions.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Pseudocapacitive materials are crucial for high-energy and high-power density storage.
  • Challenges remain in material degradation, conductivity, cycling stability, and cost.

Purpose of the Study:

  • To synthesize and characterize a novel cadmium(II)-based coordination polymer (Cd(DAB)).
  • To evaluate the pseudocapacitive behavior and electrochemical performance of Cd(DAB) for supercapacitor applications.

Main Methods:

  • Facile one-pot synthesis of Cd(DAB) from 3,3'-diaminobenzidine (DAB) and Cd(II) ions at room temperature.
  • Structural characterization using spectroscopic and electron microscopic techniques.
  • Electrochemical performance evaluation as an electrode material for supercapacitors.

Main Results:

  • Cd(DAB) forms a 2D layered structure with high conductivity.
  • Achieved a specific capacitance of 1341.6 F g⁻¹ at 20 A g⁻¹.
  • Demonstrated long cycle life with 81% capacitance retention over 10,000 cycles.
  • An asymmetrical supercapacitor device showed a specific capacitance of 428.5 F g⁻¹ at 1 A g⁻¹.

Conclusions:

  • Cd(DAB) is a cost-effective and high-performance pseudocapacitive material.
  • The material exhibits excellent energy storage capabilities and cycling stability.
  • Cd(DAB) shows promise for next-generation supercapacitor devices.