Engineering oxygen vacancies on dendrite-like IrO2 for the oxygen evolution reaction in acidic solution

文献情報

出版日 2020-02-27

DOI 10.1039/D0SE00007H

インパクトファクター 6.367

著者

Chao Cai, Shaobo Han, Yongliang Tang

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要旨

Here we report IrO2 with dendrite-like nanostructures (DLNs) as a catalyst for the oxygen evolution reaction (OER) in acidic solution. The IrO2 DLNs are prepared by the molten salt method and have self-standing three dimensional structures. IrO2 with DLNs has a high mass activity determined to be 19-fold that of commercial IrO2. Combining a wide array of ex situ characterization methods, we demonstrate that the sublayer Ir cations and lattice O participate in the OER. The Ir corrosion and O/OH− adsorption during the OER can lead to IrO2 surface reconstruction, from a compressed one to a stretched one.

掲載誌

Sustainable Energy & Fuels

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Engineering oxygen vacancies on dendrite-like IrO2 for the oxygen evolution reaction in acidic solution

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