Advanced binder-free electrodes based on CoMn₂O₄@Co₃O₄ core/shell nanostructures for high-performance supercapacitors.

ABSTRACT: Three-dimensional (3D) hierarchical CoMn₂O₄@Co₃O₄ core/shell nanoneedle/nanosheet arrays for high-performance supercapacitors were designed and synthesized on Ni foam by a two-step hydrothermal route. The hybrid nanostructure exhibits much more excellent capacitive behavior compared with either the pristine CoMn₂O₄ nanoneedle arrays alone or Co₃O₄ nanosheets alone. The formation of an interconnected pore hybrid system is quite beneficial for the facile electrolyte penetration and fast electron transport. The CoMn₂O₄@Co₃O₄ electrode can achieve a high specific capacitance of 1627 F g^-1 at 1 A g^-1 and 1376 F g^-1 at 10 A g^-1<

SUBMITTER: Chen X 

PROVIDER: S-EPMC9085651 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature