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Title: | Combustion synthesis of battery-type positive electrodes for robust aqueous Hybrid supercapacitor. |
Authors: | Koech, Richard Bello, A. |
Keywords: | Electric energy storage Supercapacitors Double layer capacitors |
Issue Date: | Feb-2020 |
Publisher: | Elsevier Ltd. |
Abstract: | Producing materials with suitable features including robust, and high electrical conductivity for the realization of excellent electrochemical performance for supercapacitor devices remains a great challenge. In this regard, we optimize and used the combustion synthesis technique assisted with urea for the production of a positive electrode based on battery type lithium manganese oxide (LiMnO) and activated carbon as negative electrode materials for high voltage hybrid devices in aqueous electrolytes. The samples were analyzed with X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. The structural properties of the material were studied and hybrid devices fabricated present a specific capacitance of 65 F g−1 and 78 F g−1, at 0.5 A g−1 in 1 M Li2SO4 and 1 M Na2SO4 respectively, with long-term stability after continuous cycling. These result shows that this strategy can revolutionize new ways to the synthesis of a plethora of materials for high voltage energy storage applications. |
URI: | https://doi.org/10.1016/j.est.2019.101160 http://ir.mu.ac.ke:8080/jspui/handle/123456789/4728 |
Appears in Collections: | School of Biological and Physical Sciences |
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