Colloidal Processing of Mn3O4-Carbon Nanotube Nanocomposite Electrodes for Supercapacitors.

ABSTRACT: This investigation addresses the challenges in the development of efficient nanostructured Mn3O4 cathodes for supercapacitors. A high areal capacitance and the ability to avoid a time-consuming activation procedure for electrodes with high active mass loading of 40 mg cm-2 are reported. This facilitates practical applications of Mn3O4 based electrodes. The highest capacitance of 6.11 F cm-2 (153 F g-1) is obtained from cyclic voltammetry at a scan rate of 2 mV s-1 and 6.07 F cm-2 (151.9 F g-1) from the chronopotentiometry at a current density of 3 mA cm-2 in a potential window of 0.9 V in a neutral Na2SO4 electrolyte. The new approach is based on the application of rhamnolipids (RL) as a capping agent for the synthesis of Mn3O4 particles and a co-dispersant for Mn3O4 and carbon nanotubes,

SUBMITTER: Yang W 

PROVIDER: S-EPMC8912692 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature