Hexagonal Sphericon Hematite with High Performance for Water Oxidation.
basic_science · Level V
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- Record sourced from PubMed, PMID 29052923.
- Also identified by DOI 10.1002/adma.201703792.
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Abstract
A cost-effective hexagonal sphericon hematite with predominant (110) facets for the oxygen evolution reaction (OER) is demonstrated. Sequential incorporation of near-atomic uniformly distributed Ce species and Ni nanoparticles into selected sites of the hematite induces a complex synergistic integration phenomenon that enhances the overall catalytic OER performance. This cheap hexagonal sphericon hematite (Fe ≈ 98%) only needs a small overpotential (η) of 0.34 V to reach 10 mA cm<sup>-2</sup> , superior to commercial IrO<sub>2</sub> and more expensive Co-, Ni-, and Li-based electrocatalysts.