Supersonically Sprayed Zn2SnO4/SnO2/CNT Nanocomposites for High-Performance Supercapacitor Electrodes

Edmund Samuel, Tae Gun Kim, Chan Woo Park, Bhavana Joshi, Mark T. Swihart, Suk Goo Yoon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, we demonstrate rapid and facile supersonic cold spray deposition of Zn2SnO4/SnO2/CNT nanocomposite supercapacitor electrodes with promising combinations of power and energy density. Cyclic voltammetry confirmed the capacitive behavior of the optimized electrode, with specific capacitance reaching 260 F·g-1 at a current density of 10 A·g-1. We attribute this high performance to the optimal combination of CNT (carbon nanotube; double-layer capacitance) and Zn2SnO4/SnO2 (pseudocapacitance) properties. The mesoporous and accessible surface of the CNT significantly contributed to the excellent retention (approximately 93%) of the specific capacitance after 15000 galvanostatic charge/discharge cycles. In addition, the supercapacitor exhibited a remarkable energy density, electrochemical properties, and mechanical stability. The materials and approach presented here can enable cost-effective, efficient, and scalable production of high-performance supercapacitor electrodes.

Original languageEnglish
JournalACS Sustainable Chemistry and Engineering
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Nanocomposites
electrode
Capacitance
Electrodes
Carbon Nanotubes
Mechanical stability
Electrochemical properties
spray
Cyclic voltammetry
energy
Carbon nanotubes
Current density
cost
Supercapacitor
Costs
carbon nanotube
cold
material

Keywords

  • CNT
  • Cold spray technique
  • Nanocomposite
  • Supercapacitor
  • ZnSnO

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

Supersonically Sprayed Zn2SnO4/SnO2/CNT Nanocomposites for High-Performance Supercapacitor Electrodes. / Samuel, Edmund; Kim, Tae Gun; Park, Chan Woo; Joshi, Bhavana; Swihart, Mark T.; Yoon, Suk Goo.

In: ACS Sustainable Chemistry and Engineering, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Kim, Tae Gun

AU - Park, Chan Woo

AU - Joshi, Bhavana

AU - Swihart, Mark T.

AU - Yoon, Suk Goo

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