Efficient Water Electrolysis Using Ni2P as a Bifunctional Catalyst: Unveiling the Oxygen Evolution Catalytic Properties of Ni2P | Zendy

LucasAlexandre Stern | Zendy; Xile Hu | Zendy

Open Access

Efficient Water Electrolysis Using Ni2P as a Bifunctional Catalyst: Unveiling the Oxygen Evolution Catalytic Properties of Ni2P

Author(s) -

LucasAlexandre Stern,

Xile Hu

Publication year - 2016

Publication title -

chimia international journal for chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.387

H-Index - 55

eISSN - 2673-2424

pISSN - 0009-4293

DOI - 10.2533/chimia.2016.240

Subject(s) - overpotential , bifunctional , phosphide , catalysis , oxygen evolution , electrolysis , electrolysis of water , oxygen , alkaline water electrolysis , chemistry , nickel , bifunctional catalyst , water splitting , materials science , chemical engineering , inorganic chemistry , electrode , electrochemistry , organic chemistry , photocatalysis , engineering , electrolyte

The excellent bifunctional catalytic activity of nickel phosphide (Ni2P) for water splitting is reported. Ni2P, an active hydrogen evolving catalyst, is shown to be highly active for oxygen evolution. Only 290 mV of overpotential is required to generate a current density of 10 mA cm(-2) in 1 M KOH. Under oxygen evolving conditions, Ni2P undergoes structural modification to form a Ni2P/NiOx core-shell assembly, the catalytic active species. Ni2P is applied on both electrodes of an alkaline electrolyser and a current density of 10 mA cm(-2) is generated at 1.63 V.

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