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Rapid Production of Mn3O4/rGO as an Efficient Electrode Material for Supercapacitor by Flame Plasma

by Yang Zhou 1, Lei Guo 2,*, Wei Shi 2, Xuefeng Zou 1, Bin Xiang 1,3,* and Shaohua Xing 4,*
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
School of Material and Chemical Engineering, Tongren University, Tongren 554300, China
National-municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction, Chongqing 400044, China
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao 26623, China
Authors to whom correspondence should be addressed.
Materials 2018, 11(6), 881;
Received: 7 May 2018 / Revised: 22 May 2018 / Accepted: 22 May 2018 / Published: 24 May 2018
Benefiting from good ion accessibility and high electrical conductivity, graphene-based material as electrodes show promising electrochemical performance in energy storage systems. In this study, a novel strategy is devised to prepare binder-free Mn3O4-reduced graphene oxide (Mn3O4/rGO) electrodes. Well-dispersed and homogeneous Mn3O4 nanosheets are grown on graphene layers through a facile chemical co-precipitation process and subsequent flame procedure. This obtained Mn3O4/rGO nanostructures exhibit excellent gravimetric specific capacitance of 342.5 F g−1 at current density of 1 A g−1 and remarkable cycling stability of 85.47% capacitance retention under 10,000 extreme charge/discharge cycles at large current density. Furthermore, an asymmetric supercapacitor assembled using Mn3O4/rGO and activated graphene (AG) delivers a high energy density of 27.41 Wh kg−1 and a maximum power density of 8 kW kg−1. The material synthesis strategy presented in this study is facile, rapid and simple, which would give an insight into potential strategies for large-scale applications of metal oxide/graphene and hold tremendous promise for power storage applications. View Full-Text
Keywords: Mn3O4; reduced graphene oxide; supercapacitors; flame plasma Mn3O4; reduced graphene oxide; supercapacitors; flame plasma
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Zhou, Y.; Guo, L.; Shi, W.; Zou, X.; Xiang, B.; Xing, S. Rapid Production of Mn3O4/rGO as an Efficient Electrode Material for Supercapacitor by Flame Plasma. Materials 2018, 11, 881.

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