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Supersonically Sprayed Zn2SnO4/SnO2/CNT Nanocomposites for High-Performance Supercapacitor Electrodes
- Issue Date
- 19-8월-2019
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Cold spray technique; Supercapacitor; Zn2SnO4; CNT; Nanocomposite
- Citation
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.7, no.16, pp.14031 - +
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING
- Volume
- 7
- Number
- 16
- Start Page
- 14031
- End Page
- +
- ISSN
- 2168-0485
- Abstract
- In this study, we demonstrate rapid and facile supersonic cold spray deposition of Zn2SnO4/SnO2/CNT nano-composite 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
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