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Chemically deposited Bi2S3:PbS solid solution thin film as supercapacitive electrode.

Bidhan Pandit1, Gagan Kumar Sharma1, Babasaheb R Sankapal1

  • 1Nano Materials and Device Laboratory, Department of Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur 440010, Maharashtra, India.

Journal of Colloid and Interface Science
|July 12, 2017
PubMed
Summary

Researchers developed a new bismuth sulfide-lead sulfide (Bi2S3:PbS) thin film electrode using a simple method. This stable nanocomposite material offers high performance for supercapacitive energy storage applications.

Keywords:
Bi(2)S(3):PbS thin filmEnergy storageSILARSupercapacitor

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Developing stable, high-performance supercapacitive electrodes is crucial for renewable energy.
  • Existing materials often face challenges in cost, synthesis, or energy density.

Purpose of the Study:

  • To synthesize and characterize a novel Bi2S3:PbS solid solution thin film for supercapacitor electrodes.
  • To evaluate the electrochemical performance of the synthesized nanocomposite material.

Main Methods:

  • Thin film synthesis via the successive ionic layer adsorption and reaction (SILAR) method.
  • Material characterization using X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and High-Resolution Transmission Electron Microscopy (HRTEM).
  • Electrochemical performance testing including specific capacitance and charge-discharge cycles.

Main Results:

  • Successful formation of a Bi2S3:PbS solid solution in nanoparticle-gilded thin film form.
  • Achieved excellent specific capacitance of 402.4 F/g at 1 mA/cm².
  • Demonstrated high specific energy of 20.1 Wh/kg and specific power of 1.2 kW/kg.

Conclusions:

  • The Bi2S3:PbS nanocomposite thin film is a promising candidate for advanced energy storage devices.
  • The SILAR method provides a viable route for synthesizing high-performance supercapacitive electrode materials.
  • This approach offers a new strategy for developing efficient nanocomposite thin films for energy storage applications.