In situ mass change and gas analysis of 3D manganese oxide/graphene aerogel for supercapacitors.

ABSTRACT: Manganese oxide nanoparticles decorated on 3D reduced graphene oxide aerogels (3D MnO _x /rGO_ae) for neutral electrochemical capacitors were successfully produced by a rapid microwave reduction process within 20 s. The symmetric electrochemical capacitor of 3D MnO _x /rGO_ae (Mn 3.0 at%) storing charges via both electric double layer capacitance (EDLC) and pseudocapacitance mechanisms exhibits a specific capacitance of 240 F g^-1 as compared with 190 F g^-1 of that using the bare 3D rGO_ae at 0.5 A g^-1 in 1 M Na₂SO₄ (aq.) electrolyte. It retains 90% of the initial capacitance after 10 000 cycles, demonstrating high cycling stability. In addition, the charge storage m

SUBMITTER: Suktha P 

PROVIDER: S-EPMC9071041 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature