Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst

Morteza Rezaei Talarposhti; Tristan Asset; Aaron J. Roy; Kateryna Artyushkova; Lok kun Tsui; Fernando H. Garzon; Alexey Serov; Plamen Atanassov

doi:10.1016/j.elecom.2021.106999

Ni(OH)₂-free NiCu as a hydrogen evolution and oxidation electrocatalyst

Morteza Rezaei Talarposhti, Tristan Asset, Aaron J. Roy, Kateryna Artyushkova, Lok kun Tsui, Fernando H. Garzon, Alexey Serov, Plamen Atanassov

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon support morphology is also investigated: two different supports, DENKA black and Ketjenblack with widely different properties (specific surface, proportion of low strain carbons, etc.) are studied, and no difference are observed in their electrochemical activity. However, the use 4-aminoantipyrine as a reducing agent resulted in a dramatic increase in non-oxidized Ni at the electrocatalyst’ surface, concomitant to a large increase in its activity for both the hydrogen evolution and oxidation.

Original language	English
Article number	106999
Journal	Electrochemistry Communications
Volume	125
DOIs	https://doi.org/10.1016/j.elecom.2021.106999
State	Published - Apr 2021
Externally published	Yes

Funding

This research was supported by funding from U.S. Department of Energy, Energy Efficiency and Renewable Energy, Hydrogen and Fuel Cell Technology Office Incubator Award DE-EE0006962: “Development of PGM-free Catalysts for Hydrogen Oxidation Reaction in Alkaline Media”.

Keywords

Carbon-supported catalysts
HOR/HER
Ni-Cu catalysts
Non-platinum electrocatalysts

Access to Document

10.1016/j.elecom.2021.106999

Cite this

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title = "Ni(OH)2-free NiCu as a hydrogen evolution and oxidation electrocatalyst",

abstract = "In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon support morphology is also investigated: two different supports, DENKA black and Ketjenblack with widely different properties (specific surface, proportion of low strain carbons, etc.) are studied, and no difference are observed in their electrochemical activity. However, the use 4-aminoantipyrine as a reducing agent resulted in a dramatic increase in non-oxidized Ni at the electrocatalyst{\textquoteright} surface, concomitant to a large increase in its activity for both the hydrogen evolution and oxidation.",

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author = "{Rezaei Talarposhti}, Morteza and Tristan Asset and Roy, {Aaron J.} and Kateryna Artyushkova and Tsui, {Lok kun} and Garzon, {Fernando H.} and Alexey Serov and Plamen Atanassov",

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language = "English",

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AU - Rezaei Talarposhti, Morteza

AU - Asset, Tristan

AU - Roy, Aaron J.

AU - Artyushkova, Kateryna

AU - Tsui, Lok kun

AU - Garzon, Fernando H.

AU - Serov, Alexey

AU - Atanassov, Plamen

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AB - In this manuscript, we investigate the role of the nickel surface oxidation and the use of additional reducing agent in the synthesis process in the electrochemical activity of NiCu electrocatalysts for hydrogen oxidation reaction and hydrogen evolution reaction. In addition, the role of the carbon support morphology is also investigated: two different supports, DENKA black and Ketjenblack with widely different properties (specific surface, proportion of low strain carbons, etc.) are studied, and no difference are observed in their electrochemical activity. However, the use 4-aminoantipyrine as a reducing agent resulted in a dramatic increase in non-oxidized Ni at the electrocatalyst’ surface, concomitant to a large increase in its activity for both the hydrogen evolution and oxidation.

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