Electrochemical Properties of Mesoporous MnO₂ Thin Films Deposited via Aqueous Solution Processing

Abstract

Mesoporous gamma-MnO₂ thin films were deposited onto ITO-coated glass substrates from aqueous solutions containing Mn²⁺, BrO₃^-, and cetyltrimethylammonium chloride (C16TAC) at 333K. The existence of ordered mesoporous structure was suggested by XRD profiles in which a series of periodic diffraction peaks were recorded at low angles. The mesoporous thin films showed larger current response in the cyclic voltammograms than non-porous thin films by one or two orders of magnitude, reflecting higher surface area.