Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 41, Pages 12726-12731Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta12672b
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Funding
- Australian Research Council [DP110102569]
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Amorphous Co3O4 nanoparticle/graphene composites (Co3O4/GR) were fabricated via layer-by-layer (LBL) assembly onto indium tin oxide (ITO) coated conductive glass and applied as a catalyst for efficient oxygen evolution reaction in electrolytic water splitting. A thin uniform graphene layer was deposited onto the ITO surface through electrophoretic deposition (EPD), followed by subsequent deposition of a thin layer of Co3O4 nanoparticles onto the graphene surface by chemical bath deposition (CBD) to yield a transparent Co3O4/GR bi-layer. X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were employed to characterise the fabricated composites. The layered Co3O4/GR composite is applied for electrocatalytic oxygen evolution reaction (OER) in 0.1 M KOH and exhibits remarkable catalytic activity with a high Faradaic efficiency (95%) and excellent long-term stability.
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