Enhanced electrochemical properties of silver-coated zirconia nanoparticles for supercapacitor application
| Autor: | Afzal Shah, Muhammad Naeem Ashiq, Deependra Tyagi, Muhammad Faisal Iqbal, Muhammad Fahad Ehsan, Aamir Razzaq, Ali Aman, Jan Nisar, Thamraa Alshahrani, Muhammad Najam-ul-Haq |
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| Rok vydání: | 2020 |
| Předmět: |
Supercapacitor
Zro2 nanoparticles supercapacitors Science (General) Materials science power density Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Pseudocapacitance 010305 fluids & plasmas Q1-390 Chemical engineering 0103 physical sciences silver-coated zirconia Cubic zirconia 0210 nano-technology pseudocapacitance |
| Zdroj: | Journal of Taibah University for Science, Vol 15, Iss 1, Pp 10-16 (2021) |
| ISSN: | 1658-3655 |
| DOI: | 10.1080/16583655.2020.1867338 |
| Popis: | Silver-coated ZrO2 and individual ZrO2 nanoparticles have been synthesized using the simple reduction and co-precipitation methods, respectively. The synthesized products were examined using the X-ray diffraction, energy-dispersive X-ray and UV–visible spectroscopy, which confirmed the successful synthesis of materials. Scanning electron microscopy and transmission electron microscopy revealed the round-shaped nanoparticles of both materials. The cyclic voltammograms revealed the well-defined redox peaks and recommended the pseudocapacitive nature of the electrodes. The silver-coated zirconia showed higher specific capacitance of 792 F/g at 10 mV/s as compared to individual zirconia (10.22 F/g). Silver-coated ZrO2 also showed good power density of 274.5 W/kg at current density of 5 mA/cm2 through the galvanostatic charge discharge profile. Hence, the results suggest that silver-coated ZrO2 showed improved electrochemical performance as compared individual ZrO2 due to higher electrical conductivity and specific surface area. Hence, silvercoated ZrO2 nanoparticles can be employed as an electrode material for supercapacitor applications. |
| Databáze: | OpenAIRE |
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