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Electrochemical supercapacitors (ECs) with high energy density and power capability have demonstrated promising potential in various energy applications. In this study, 3D MnO 2 /rGO aerogels with excellent electrical conductivity was successfully prepared with a simple hydrothermal method. The as-prepared 3D aerogels could be applied for constructing the electrode of supercapacitor directly without the demand of other additives. Asymmetric supercapacitors were then constructed with Na 2 SO 4doi:10.20964/2017.03.07 fatcat:5cup2pjlifattdpbqiidphw73e