Electrochemical Performance of 2D-Hierarchical Sheet-Like ZnCo2O4 Microstructures for Supercapacitor Applications
| Autor: | Gutturu Rajasekhara Reddy, Kumcham Prasad, P. Reddi Babu, Borelli Deva Prasad Raju, Koduru Mallikarjuna, Megala Rajesh, M. Siva Pratap Reddy, Gnanendra Shanmugam, N. John Sushma |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
areal capacitance
Materials science General Chemical Engineering 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences Capacitance Energy storage sheet-like ZnCo2O4 Inorganic Chemistry lcsh:QD901-999 General Materials Science Supercapacitor supercapacitors business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Dielectric spectroscopy hydrothermal method Electrode Optoelectronics lcsh:Crystallography Cyclic voltammetry 0210 nano-technology business Current density |
| Zdroj: | Crystals Volume 10 Issue 7 Crystals, Vol 10, Iss 566, p 566 (2020) |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst10070566 |
| Popis: | With the rapid improvement of the global economy, the role of energy has become even more vital in the 21st century. In this regard, energy storage/conversion devices have become a major, worldwide research focus. In response to this, we have prepared two-dimensional (2D)-hierarchical sheet-like ZnCo2O4 microstructures for supercapacitor applications using a simple hydrothermal method. The 2D-hierarchical sheet-like morphologies with large surface area and smaller thickness enhanced the contact area of active material with the electrolyte, which increased the utilization rate. We investigated the electrochemical performance of sheet-like ZnCo2O4 microstructures while using Cyclic voltammetry (CV), Galvanostatic charge-discharge (GCD), and Electrochemical impedance spectroscopy (EIS) analysis. The electrochemical results demonstrated that the ZnCo2O4 electrode possesses 16.13 mF cm&minus 2 of areal capacitance at 10 µ A cm&minus 2 of current density and outstanding cycling performance (170% of capacitance is retained after 1000 cycles at 500 µ 2). The high areal capacitance and outstanding cycling performance due to the unique sheet-like morphology of the ZnCo2O4 electrode makes it an excellent candidate for supercapacitor applications. |
| Databáze: | OpenAIRE |
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