<span style="font-size:11.0pt;font-family: "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">Oxygen reduction reaction of manganese oxide/graphene oxide nanocomposite</span>

Abstract

<span style="font-size:11.0pt;font-family: " times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";mso-bidi-font-family:="" mangal;letter-spacing:-.3pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:hi"="" lang="EN-GB">MnO₂/graphene oxide composite coating has been prepared by electrochemical anodic deposition method. Optimization of current density and deposition efficiency is reported. The formation of α-MnO₂/graphene oxide nanocomposite is elucidated through X ray diffraction and infrared reflection measurements. Morphological studies reveal the increase in porosity and exfoliation of graphene oxide by MnO₂ particles. The extent of oxygen reduction reaction occurring at the surface of MnO₂/graphene oxide composite coating have been analyzed by cyclic voltammetry and electrochemical impedance spectroscopy in aqueous 1 <i>M</i> Li₂SO₄ solution. The composite coating is observed to possess better catalytic properties towards oxygen reduction.</span>