Preparation and characterization of self-assembled manganese dioxide thin films

Abstract

Thin films of manganese dioxide (MnO 2) were prepared by self-assembly of MnO 2 nanoparticles directly unto nickel-coated poly(ethylene terephthalate) flexible films using the newly developed horizontal submersion process. The thickness of deposited thin films was controllable by the deposition duration. This horizontal submersion deposition process for thin-film deposition is relatively easy, simple, and cost effective. Effects of deposition duration and calcination temperatures on the microstructure and electrochemical properties of self-assembled MnO 2 thin films were investigated. Optimized MnO 2 thin films exhibited high charge capacity, good cycling reversibility, and stability in a mild aqueous electrolyte and are thus promising electrode materials for the fabrication of thin-film electrochemical capacitors. © 2011 Suh Cem Pang et al.