| Autor: |
Sai Ram Eedulakanti, Anil Kumar Gampala, K. Venkateswara Rao, Ch. Shilpa Chakra, Venkataramana Gedela, Rajender Boddula |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Materials Science for Energy Technologies, Vol 2, Iss 3, Pp 372-376 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2589-2991 |
| DOI: |
10.1016/j.mset.2019.03.007 |
| Popis: |
In this work, Graphene-SnO2 nanocomposite is synthesized by hydrothermal method for supercapacitor electrode material. The characterizations revealed that SnO2 nanoparticles exhibited tetragonal structure with an average crystalline size of ∼33 nm from XRD and for the nanocomposite material it is observed that SnO2 nanoparticles are decorated to the surface of graphene sheet from FE-SEM. The graphene-SnO2 nanocomposite, SnO2 nanoparticles and graphene oxide (GO) has band gap values of 3.44 eV, 3.67 eV and 2.51 eV respectively calculated from UV–Visible Spectroscopy. The DLS indicates better stable suspension in water with a zeta potential of −7.6 mV for graphene-SnO2 Nanocomposite and −4.1 mV for SnO2 nanoparticles. The electrochemical analysis is performed with 1 M Na2SO4 aqueous electrolyte. The resulted nanocomposite showed enhanced cyclic voltammetry with a comparison to SnO2 nanoparticles. The Galvanostatic charge-discharge analysis confirmed the cyclic stability of the nanocomposite composite material. Overall, it is suggested that graphene-SnO2 nanocomposite has enhanced electrochemical properties. Keywords: Supercapacitor, Graphene, SnO2, Nanocomposite, Hydrothermal, Cyclic voltammetry |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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