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Functional Anodic and Cathodic Transition of Graphene Oxide Using Lead Electrodes and Its Electrochemistry

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Document pages: 13 pages

Abstract: The transition in the composition, electrical and fracture properties of graphene oxide paper (GO) in at the anode (aGO) and cathode (cGO) of lead sulphuric acid boundary have been studied. Higher thermal stability and lower weight loss of aGO (34wt at 800 ˚C) with XRD peak at 2ϴ = 10.5˚ showed the reduction of the ordinary GO paper (95wt at 800 ˚C). The fractographs from the SEM showed that the cGO failed by ductile rupture of a higher degree than the ordinary GO paper, while that of the aGO was brittle cleavage. UV-Vis, Fourier Transform Infrared and X-ray Photoelectron Spectroscopies showed the changes in functional groups, via the interaction of graphene oxide functional groups with protons, adsorbed oxygen containing ions. Graphene lead oxide based composite was achieved by covalent interactions. Non-covalent complexation of metal ions with slight reduction gave rise to stronger graphene oxide paper at the cathode. The electrical conductivity of aGO are 1.61 x 106 S m and those of the cGO are 4.27 X 105 S m. This foremost work is useful for further study of graphene oxide electrochemical reduction and metallic oxide functionalization for electrode materials in advanced lead-carbon batteries.

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