Surface galvanic formation of Co-OH on Birnessite and its catalytic activity for the oxygen evolution reaction

Yayun Pu,Veronica Celorrio, Jöerg M. Stockmann,Oded Sobol,Zongzhao Sun,Wu Wang,Matthew J. Lawrence,Jörg Radnik,Andrea E. Russell,Vasile-Dan Hodoroaba,Limin Huang,Paramaconi Rodriguez

Journal of Catalysis（2021）

引用 6|浏览7

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摘要

•Formation of Co-OH on K0.45MnO2 via a redox reaction of hydrated Co2+ with surface Mn4+.•Ultrathin Co-OH nanoflakes with high EC surface area formed due to limited surface Mn4+ sites.•Electronic structure of Co-OH strongly depends on the anion types of Co precursors.•Co@KMO-Cl showes OER activity with an overvoltage of only 245 mV at 10 mA cm−2.

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关键词

Oxygen evolution reaction,Surface galvanic synthesis,Layered manganese oxide,Anion effect

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