Graphene Oxide/α-MnO2 Nanocomposite Electrodes Produced Using Planetary Ball Milling for Li-O2 Batteries. (2015)

• Record Type: Journal Article
• Authors: Cetinkaya, T.; Tokur, M.; Ozcan, S.; Algul, H.; Uysal, M.; Akbulut, H.
• Is Part Of: Materials today. Volume 2:Number 8(2015)
• Page Start: 4223
• Page End: 4228
• Publication Date: 2015
• Subjects: α-MnO2 -- Graphene Oxide -- mechanical alloying -- cathode -- Li-O2 batteries; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.09.007
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Graphene Oxide (GO)/α-MnO2 nanocomposite air breathing cathodes were prepared using mechanical alloying method. For preparation of GO/α-MnO2 nanocomposite cathodes, GO was produced by Hummer's method and α-MnO2 nanowires were synthesized using microwave hydrothermal synthesis. In order to investigate effect of GO on the electrochemical performance of the GO/α-MnO2 cathodes, different amounts of GO (10 wt.%, 30 wt.%, 50 wt.%) were dispersed in the composite cathode. Electrochemical performances of the composite cathodes were tested using ECC-Air test cell. Among the produced composite cathodes, GO/α-MnO2 composite cathode containing 50 wt.% α-MnO2 showed 380 mAh/g discharge capacity after 30 cycles.