Nickel boride ( NixB ) as a highly efficient catalyst for oxygen evolution 1 2

Content Provider	Semantic Scholar
Author	Masaa, Justus Sinevb, Ilya Mistryb, Hemma Ventosaa, Edgar Matae, Maria De La Arbiole, Jordi Martín Muhlerd Cuenyab, Beatriz Roldan Schuhmanna, Wolfgang
Copyright Year	2017
Abstract	16 The overriding obstacle to mass hydrogen production as the premium fuel for powering our 17 planet is the frustratingly slow kinetics of the oxygen evolution reaction (OER). Additionally, 18 inadequate understanding of the key barriers of the OER is a hindrance to insightful design of 19 advanced OER catalysts. Herein, we present amorphous nickel boride (NixB) as a low-cost, very 20 efficient and stable catalyst for the OER during electrochemical water splitting. The catalyst 21 afforded 10 mA cm at 0.38 V overpotential during OER in 1.0 M KOH, which reduced to only 22 0.28 V at 20 mA cm when supported on nickel foam. Operando XAFS measurements revealed 23 prevalence of NiOOH, as well as Ni-B under OER conditions, owing to a Ni-B core@nickel 24 oxyhydroxide shell (Ni-B@NiOxH) structure, and increase in disorder of the NiOxH layer, thus 25 unveiling important insight into the transient states of the catalyst during oxygen evolution. 26 27
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Alternate Webpage(s)	https://ddd.uab.cat/pub/artpub/2017/194893/advenergymater_a2017v7n17p1700381.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article