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Enhancing oxygen evolution efficiency of multiferroic oxides by spintronic and ferroelectric polarization regulation.

08:00 EDT 29th March 2019 | BioPortfolio

Summary of "Enhancing oxygen evolution efficiency of multiferroic oxides by spintronic and ferroelectric polarization regulation."

Regulating the electronic structure of catalysts is the most efficient strategy yet, despite its limitations, to improve their oxygen evolution efficiency. Instead of only adjusting the electronic structure, here we utilize ferroelectric polarization to accelerate the oxygen evolution reaction as well. This is demonstrated on a multiferroic layered perovskite BiCoTiO with in-situ grown BiCoO. Thanks to the superimposed effects of electronic regulation and ferroelectric polarization, the as-prepared multiferroic electrocatalysts are more efficient than the benchmark IrO (with a final 320 mV overpotential at the current density of 10 mA cm and a 34 mV dec Tafel slope). This work not only demonstrates a low-cost and high-efficient OER electrocatalyst, but also provides a strategic design for multi-component electrocatalytic material systems by consideration of both spin and polarization degrees of freedom.

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This article was published in the following journal.

Name: Nature communications
ISSN: 2041-1723
Pages: 1409

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