Interfacial Spectromicroscopy of Water Oxidation at Earth Abundant Solar Photoanodes

Project: Research project

Project Details

Description

Solar water splitting materials that generate the most current need Pt-group elements (PGEs). The replacement of PGEs is in principle possible with photoanodes consisting of hematite (-Fe2O3), a photochemically stable earth-abundant mineral phase that is also non-toxic, inexpensive, and readily obtainable in chemically pure form. However, the maximum possible current density of ~12 mA cm-2 at 0.6 VRHE required to make the use of hematite solar photoanodes viable is yet to be achieved. The project's guiding hypothesis is that water reorientation near the active site is a significant source of overpotential (0.5-0.6 V from experiment) for water oxidation.
StatusActive
Effective start/end date9/1/228/31/25

Funding

  • Department of Energy (DE-SC0023342 002)

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