A Hybrid Electrode of Co₃O₄@PPy Core/Shell Nanosheet Arrays for High-Performance Supercapacitors.

ABSTRACT: Herein, combining solverthermal route and electrodeposition, we grew unique hybrid nanosheet arrays consisting of Co₃O₄ nanosheet as a core, PPy as a shell. Benefiting from the PPy as conducting polymer improving an electron transport rate as well as synergistic effects from such a core/shell structure, a hybrid electrode made of the Co₃O₄@PPy core/shell nanosheet arrays exhibits a large areal capacitance of 2.11 F cm^-2 at the current density of 2 mA cm^-2, a ~4-fold enhancement compared with the pristine Co₃O₄ electrode; furthermore, this hybrid electrode also displays good rate capability (~65 % retention of the initial capacitance from 2 to 20 mA cm^-2) and superior cycling performance (~85.

SUBMITTER: Yang X 

PROVIDER: S-EPMC6223670 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature