Binder-free novel Cu4SnS4 electrode for high-performance supercapacitors

A. C. Lokhande, Amar Patil, A. Shelke, P. T. Babar, M. G. Gang, V. C. Lokhande, Dattatray Dhawale, C. D. Lokhande, Jin Hyeok Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this work, for the first time, we report the direct coating of ternary chalcogenide-based nanostructured Cu4SnS4 (CTS) thin film electrodes for the energy storage application. The phase purity, composition, microstructure, optical and electrical properties of the synthesized electrode are validated through comprehensive characterization techniques. In the supercapacitive application, the CTS electrode delivers an excellent performance with the maximum specific capacitance of 704 F/g, an energy density of 27.77 Wh/kg and a power density of 7.14 kW/kg in 1 M NaOH electrolyte solution. The intrinsic electrode properties such as the electronic conductivity, crystal structure and film hydrophilicity are found to be influential parameters for the obtained high performance and are studied in detail. Furthermore, the solid-state supercapacitive device fabricated using CTS electrodes and polymer gel electrolyte (PVA/NaOH) in a symmetric configuration, demonstrated the highest specific capacitance of 34.9 F/g with an energy density of 2.4 Wh/kg, a power density of 0.291 kW/kg and more than 89.9% capacitive retention. The presented work reports a simple, cost-effective, scalable and replicable approach for electrode application in supercapacitor industry.

Original languageEnglish
Pages (from-to)80-88
Number of pages9
JournalElectrochimica Acta
Volume284
DOIs
Publication statusPublished - 10 Sep 2018

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Keywords

  • Crystal structure
  • CuSnS specific capacitance
  • Supercapacitor
  • Symmetric device
  • Thin film

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Lokhande, A. C., Patil, A., Shelke, A., Babar, P. T., Gang, M. G., Lokhande, V. C., Dhawale, D., Lokhande, C. D., & Kim, J. H. (2018). Binder-free novel Cu4SnS4 electrode for high-performance supercapacitors. Electrochimica Acta, 284, 80-88. https://doi.org/10.1016/j.electacta.2018.07.170