An Amorphous Cobalt Borate Nanosheet-Coated Cobalt Boride Hybrid for Highly Efficient Alkaline Water Oxidation Reaction

An Amorphous Cobalt Borate Nanosheet-Coated Cobalt Boride Hybrid for Highly Efficient Alkaline Water Oxidation Reaction

We present a simple in situ sodium borohydride (NaBH4) reduction approach to produce amorphous core–shell like cobalt borate nanosheet-coated cobalt boride hybrid (Co-B@Co-Bi). Benefiting from the unique rich amorphous Co-Bi layer, it exhibits extraordinary catalytic activity and good stability towa...

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Veröffentlicht in:ACS sustainable chemistry & engineering 2019-03, Vol.7 (6), p.5620-5625
Hauptverfasser: Tan, Tan, Han, Pengyu, Cong, Hengjiang, Cheng, Gongzhen, Luo, Wei
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creator Tan, Tan
Han, Pengyu
Cong, Hengjiang
Cheng, Gongzhen
Luo, Wei
description We present a simple in situ sodium borohydride (NaBH4) reduction approach to produce amorphous core–shell like cobalt borate nanosheet-coated cobalt boride hybrid (Co-B@Co-Bi). Benefiting from the unique rich amorphous Co-Bi layer, it exhibits extraordinary catalytic activity and good stability toward the oxygen evolution reaction (OER) in 1.0 M KOH, with an overpotential of 291 mV to obtain a current density of 10 mA cm–2, outperforming most of the documented metal–metalloid-based electrocatalysts. This reverse addition strategy might provide a promising pathway for designing various transition metal borate and boride hybrid for more applications.
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title An Amorphous Cobalt Borate Nanosheet-Coated Cobalt Boride Hybrid for Highly Efficient Alkaline Water Oxidation Reaction
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