γ-NiOOH electrocatalyst derived from a nickel dithiooxamide chelate polymer for oxygen evolution reaction in alkaline solutions

Ridwan P. Putra; Ihsan Budi Rachman; Hideyuki Horino; Izabela I. Rzeznicka

doi:10.1016/j.cattod.2021.08.017

γ-NiOOH electrocatalyst derived from a nickel dithiooxamide chelate polymer for oxygen evolution reaction in alkaline solutions

Ridwan P. Putra, Ihsan Budi Rachman, Hideyuki Horino, Izabela I. Rzeznicka

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

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Abstract

The oxygen evolution reaction (OER) is a key process in number of electrochemical energy conversion technologies that demands the design of efficient electrocatalysts. In this work, catalytically active gamma-nickel oxyhydroxide (γ-NiOOH) was obtained from a two-dimensional (2D) nickel(II) dithiooxamide Ni(dto) chelate polymer via in situ electrochemical transformation in an acetylene black matrix. The transformation was carried out on the surface of a glassy carbon electrode in 1 M KOH solution, in which the nickel(II) centers of the chelate polymer were transformed into nano-sized γ-NiOOH crystallites dispersed in the carbon matrix. The resultant nanostructured catalyst exhibits OER overpotential of 390 mV (at 12 mA/cm²) and a Tafel slope of 328 mV/dec in 1 M KOH solution. The OER overpotential of the catalyst is lower than that of IrO₂/C electrode, with the same material loading. The oxygen evolution is initiated by adsorption of hydroxide ions at the Ni metal sites of the layered γ-NiOOH, with a subsequent release of oxygen molecules. This study unfolds the potential of in situ electrochemical transformation of 3d transition metal 2D chelate polymers to fabricate active electrocatalysts.

Original language	English
Pages (from-to)	308-315
Number of pages	8
Journal	Catalysis Today
Volume	397-399
DOIs	https://doi.org/10.1016/j.cattod.2021.08.017
Publication status	Published - 2022 Aug 1

Keywords

Alkaline
Coordination polymers
Electrocatalyst
Gamma nickel oxyhydroxide
Metal-air batteries
Oxygen evolution
Two-dimensional chelate polymers

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1016/j.cattod.2021.08.017

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@article{3e16d482fb3e44be9f86a585747e0f1e,

title = "γ-NiOOH electrocatalyst derived from a nickel dithiooxamide chelate polymer for oxygen evolution reaction in alkaline solutions",

abstract = "The oxygen evolution reaction (OER) is a key process in number of electrochemical energy conversion technologies that demands the design of efficient electrocatalysts. In this work, catalytically active gamma-nickel oxyhydroxide (γ-NiOOH) was obtained from a two-dimensional (2D) nickel(II) dithiooxamide Ni(dto) chelate polymer via in situ electrochemical transformation in an acetylene black matrix. The transformation was carried out on the surface of a glassy carbon electrode in 1 M KOH solution, in which the nickel(II) centers of the chelate polymer were transformed into nano-sized γ-NiOOH crystallites dispersed in the carbon matrix. The resultant nanostructured catalyst exhibits OER overpotential of 390 mV (at 12 mA/cm2) and a Tafel slope of 328 mV/dec in 1 M KOH solution. The OER overpotential of the catalyst is lower than that of IrO2/C electrode, with the same material loading. The oxygen evolution is initiated by adsorption of hydroxide ions at the Ni metal sites of the layered γ-NiOOH, with a subsequent release of oxygen molecules. This study unfolds the potential of in situ electrochemical transformation of 3d transition metal 2D chelate polymers to fabricate active electrocatalysts.",

keywords = "Alkaline, Coordination polymers, Electrocatalyst, Gamma nickel oxyhydroxide, Metal-air batteries, Oxygen evolution, Two-dimensional chelate polymers",

author = "Putra, {Ridwan P.} and Rachman, {Ihsan Budi} and Hideyuki Horino and Rzeznicka, {Izabela I.}",

note = "Funding Information: The author R.P.P. thanks the Japan International Cooperation Agency through Innovative Asia (JICA) scholarship for financial support. I.I.R thanks Shibaura Institute of Technology and Japan Society for the Promotion of Science under the JSPS KAKENHI Grant Number JP 20K05689 for financial supports. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = aug,

day = "1",

doi = "10.1016/j.cattod.2021.08.017",

language = "English",

volume = "397-399",

pages = "308--315",

journal = "Catalysis Today",

issn = "0920-5861",

publisher = "Elsevier",

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TY - JOUR

T1 - γ-NiOOH electrocatalyst derived from a nickel dithiooxamide chelate polymer for oxygen evolution reaction in alkaline solutions

AU - Putra, Ridwan P.

AU - Rachman, Ihsan Budi

AU - Horino, Hideyuki

AU - Rzeznicka, Izabela I.

N1 - Funding Information: The author R.P.P. thanks the Japan International Cooperation Agency through Innovative Asia (JICA) scholarship for financial support. I.I.R thanks Shibaura Institute of Technology and Japan Society for the Promotion of Science under the JSPS KAKENHI Grant Number JP 20K05689 for financial supports. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/8/1

Y1 - 2022/8/1

N2 - The oxygen evolution reaction (OER) is a key process in number of electrochemical energy conversion technologies that demands the design of efficient electrocatalysts. In this work, catalytically active gamma-nickel oxyhydroxide (γ-NiOOH) was obtained from a two-dimensional (2D) nickel(II) dithiooxamide Ni(dto) chelate polymer via in situ electrochemical transformation in an acetylene black matrix. The transformation was carried out on the surface of a glassy carbon electrode in 1 M KOH solution, in which the nickel(II) centers of the chelate polymer were transformed into nano-sized γ-NiOOH crystallites dispersed in the carbon matrix. The resultant nanostructured catalyst exhibits OER overpotential of 390 mV (at 12 mA/cm2) and a Tafel slope of 328 mV/dec in 1 M KOH solution. The OER overpotential of the catalyst is lower than that of IrO2/C electrode, with the same material loading. The oxygen evolution is initiated by adsorption of hydroxide ions at the Ni metal sites of the layered γ-NiOOH, with a subsequent release of oxygen molecules. This study unfolds the potential of in situ electrochemical transformation of 3d transition metal 2D chelate polymers to fabricate active electrocatalysts.

AB - The oxygen evolution reaction (OER) is a key process in number of electrochemical energy conversion technologies that demands the design of efficient electrocatalysts. In this work, catalytically active gamma-nickel oxyhydroxide (γ-NiOOH) was obtained from a two-dimensional (2D) nickel(II) dithiooxamide Ni(dto) chelate polymer via in situ electrochemical transformation in an acetylene black matrix. The transformation was carried out on the surface of a glassy carbon electrode in 1 M KOH solution, in which the nickel(II) centers of the chelate polymer were transformed into nano-sized γ-NiOOH crystallites dispersed in the carbon matrix. The resultant nanostructured catalyst exhibits OER overpotential of 390 mV (at 12 mA/cm2) and a Tafel slope of 328 mV/dec in 1 M KOH solution. The OER overpotential of the catalyst is lower than that of IrO2/C electrode, with the same material loading. The oxygen evolution is initiated by adsorption of hydroxide ions at the Ni metal sites of the layered γ-NiOOH, with a subsequent release of oxygen molecules. This study unfolds the potential of in situ electrochemical transformation of 3d transition metal 2D chelate polymers to fabricate active electrocatalysts.

KW - Alkaline

KW - Coordination polymers

KW - Electrocatalyst

KW - Gamma nickel oxyhydroxide

KW - Metal-air batteries

KW - Oxygen evolution

KW - Two-dimensional chelate polymers

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U2 - 10.1016/j.cattod.2021.08.017

DO - 10.1016/j.cattod.2021.08.017

M3 - Article

AN - SCOPUS:85114740185

SN - 0920-5861

VL - 397-399

SP - 308

EP - 315

JO - Catalysis Today

JF - Catalysis Today

ER -

γ-NiOOH electrocatalyst derived from a nickel dithiooxamide chelate polymer for oxygen evolution reaction in alkaline solutions

Abstract

Keywords

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