Oscillating Structural Transformations in the Electrochemical Synthesis of Graphene Oxide from Graphite.

ABSTRACT: Electrochemical synthesis of graphene oxide (GO) is known to occur with potential oscillations, but the structural changes underlying these oscillations have remained unclear. In situ time-resolved synchrotron radiation X-ray diffraction demonstrates that the electrochemical synthesis of GO in aqueous H₂SO₄ can be described as an oscillating reaction. The transformation from graphite to GO proceeds through periodic structural oscillations that correlate with potential cycles. Stage-1 graphite intercalation compound (GIC) is found only at the peak of the potential cycle, but not at the bottom of the cycle. Stage-1 GIC is formed in the first half-cycle from stage-2 GIC and then transforms into "pristine graphite oxide" (PGO) on the lower side of the potential cycle, aft

SUBMITTER: Gurzeda B 

PROVIDER: S-EPMC11627124 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature