Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite
| العنوان: | Effect of thermal treatment on the charge storage properties of graphene oxide/12-tungstophosphoric acid nanocomposite |
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| المؤلفون: | Ivanka Holclajtner-Antunović, Danica Bajuk-Bogdanović, Milica Vujković, Željko Mravik, Sonja Veljović Jovanović, Zoran Jovanovic |
| المصدر: | Electrochemistry Communications Electrochemistry Communications, Vol 83, Iss, Pp 36-40 (2017) |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Materials science, 12-tungstophosphoric acid, Oxide, Nanotechnology, 02 engineering and technology, Thermal treatment, 010402 general chemistry, Electrochemistry, 01 natural sciences, Capacitance, law.invention, lcsh:Chemistry, chemistry.chemical_compound, law, Desorption, Graphene oxide, Supercapacitor, Nanocomposite, Graphene, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Chemical engineering, lcsh:Industrial electrochemistry, lcsh:QD1-999, 0210 nano-technology, lcsh:TP250-261 |
| الوصف: | The influence of thermal treatment in an inert atmosphere on the charge storage properties of graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposite was examined. The transmission electron microscopy analysis revealed high dispersion of WPA on GO matrix, while the surface analysis showed thermal activation of structural changes of WPA and desorption of oxygen functional groups from GO and GO/WPA nanocomposite. Initial GO/WPA nanocomposite had approximately two times higher capacitance compared to initial GO. The thermal treatment of initial GO and GO/WPA to 500°C induced twofold increase of capacitance of GO and 40% increase of GO/WPA, accompanied with significant increase of operating voltage compared to GO (for 300mV). Above 500°C, a decrease of capacitance of both GO and GO/WPA was observed. The results suggest that understanding of structural changes of components and their interaction is crucial for improvement of electrochemical properties of considered composite. Keywords: Graphene oxide, 12-tungstophosphoric acid, Nanocomposite, Supercapacitor |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9ef4ba5b99efa647e6a01798f0b2227 https://vinar.vin.bg.ac.rs/handle/123456789/1737 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a9ef4ba5b99efa647e6a01798f0b2227 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |