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

Author

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  • Xiaoning Li

    (University of Science and Technology of China
    University of Wollongong, Squires Way)

  • Huan Liu

    (University of Science and Technology of China)

  • Zezhi Chen

    (University of Science and Technology of China)

  • Qingmei Wu

    (University of Science and Technology of China)

  • Zheyin Yu

    (University of Wollongong, Squires Way)

  • Mengmeng Yang

    (University of Science and Technology of China)

  • Xiaolin Wang

    (University of Wollongong, Squires Way)

  • Zhenxiang Cheng

    (University of Wollongong, Squires Way)

  • Zhengping Fu

    (University of Science and Technology of China
    University of Science and Technology of China)

  • Yalin Lu

    (University of Science and Technology of China
    University of Science and Technology of China
    University of Science and Technology of China)

Abstract

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 Bi5CoTi3O15 with in-situ grown BiCoO3. Thanks to the superimposed effects of electronic regulation and ferroelectric polarization, the as-prepared multiferroic electrocatalysts are more efficient than the benchmark IrO2 (with a final 320 mV overpotential at the current density of 10 mA cm−2 and a 34 mV dec−1 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.

Suggested Citation

  • Xiaoning Li & Huan Liu & Zezhi Chen & Qingmei Wu & Zheyin Yu & Mengmeng Yang & Xiaolin Wang & Zhenxiang Cheng & Zhengping Fu & Yalin Lu, 2019. "Enhancing oxygen evolution efficiency of multiferroic oxides by spintronic and ferroelectric polarization regulation," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09191-0
    DOI: 10.1038/s41467-019-09191-0
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