Bilayered microelectrodes based on electrochemically deposited MnO₂/polypyrrole towards fast charge transport kinetics for micro-supercapacitors.

ABSTRACT: Micro-supercapacitors (MSCs) are promising power solution facilities for miniaturized portable electronic devices. Microfabrication of on-chip MSC with high specific capacitance and high energy density is still a great challenge. Herein, we report a high-performance MnO₂/polypyrrole (PPy) microelectrode based MSC (MnO₂/PPy-MSC) by modern micromachining technology. Interdigital Au micro current collectors were obtained by photolithography, physical vapor deposition and lift off. A layer of PPy was electrochemically deposited on Au current collectors followed by deposition of urchin-like MnO₂ micro/nanostructures. The electrochemical performance of MnO₂/PPy-MSC was explored employing LiClO₄/PVA gel electrolyte. The assembled MSC demonstr

SUBMITTER: Haider WA 

PROVIDER: S-EPMC9053735 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature