Ternary nickel–cobalt–manganese spinel oxide nanoparticles as heterogeneous electrocatalysts for oxygen evolution and oxygen reduction reaction

P. Sivakumar; Palaniappan Subramanian; Thandavarayan Maiyalagan; Aharon Gedanken; Alex Schechter

doi:10.1016/j.matchemphys.2019.03.017

Ternary nickel–cobalt–manganese spinel oxide nanoparticles as heterogeneous electrocatalysts for oxygen evolution and oxygen reduction reaction

P. Sivakumar, Palaniappan Subramanian, Thandavarayan Maiyalagan, Aharon Gedanken, Alex Schechter

Department of Chemistry

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

23 Scopus citations

Abstract

Multimetallic nanostructure spinels composed of nickel, cobalt, and manganese ions were synthesized and their bifunctional catalytic activity towards oxygen evolution and oxygen reduction reaction in alkaline pH is reported. Three different compositions, namely, NiCoMnO ₄ Ni _1.5 Co _0.75 Mn _0.75 O ₄ and Ni ₂ Co _0.5 Mn _0.5 O ₄ were prepared by a simple template-free hydrothermal route followed by a thermal treatment in air at 600 °C. The ORR/OER activity and the stability of these ternary metal oxides strongly depend on the composition of transition metals. The best performing Ni _1.5 Co _0.75 Mn _0.75 O ₄ catalyst exhibits modest OER and ORR activity with an overpotential difference (ΔE = E _ORR -E _OER ) of 0.79 V vs. RHE between two reactions in alkaline solution, comparable to expensive and supported IrO ₂ Pt catalysts. Electrochemical studies and extensive physical characterizations indicated that amount of nickel substituted in the crystal lattice influence the bifunctional catalytic activity of the studied ternary metal oxide compositions.

Original language	English
Pages (from-to)	190-196
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	229
DOIs	https://doi.org/10.1016/j.matchemphys.2019.03.017
State	Published - 1 May 2019

Bibliographical note

Funding Information:
P. Sivakumar thanks the Council for Higher Education, State of Israel for the PBC scholarship for outstanding postdoctoral researchers from China and India. Palaniappan Subramanian acknowledge the support of INREP and Ariel University postdoctoral fellowship program for providing the research scholarship. Alex Schechter would like to thank the Israel Science Foundation (ISF) for funding the research work through the Israel National Research Center for Electrochemical Propulsion (INREP) and I-CORE Program (number 2797/11 ).

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Bifunctional
Electrocatalysts
Oxygen evolution
Oxygen reduction
Spinel oxides

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title = "Ternary nickel–cobalt–manganese spinel oxide nanoparticles as heterogeneous electrocatalysts for oxygen evolution and oxygen reduction reaction",

abstract = " Multimetallic nanostructure spinels composed of nickel, cobalt, and manganese ions were synthesized and their bifunctional catalytic activity towards oxygen evolution and oxygen reduction reaction in alkaline pH is reported. Three different compositions, namely, NiCoMnO 4 Ni 1.5 Co 0.75 Mn 0.75 O 4 and Ni 2 Co 0.5 Mn 0.5 O 4 were prepared by a simple template-free hydrothermal route followed by a thermal treatment in air at 600 °C. The ORR/OER activity and the stability of these ternary metal oxides strongly depend on the composition of transition metals. The best performing Ni 1.5 Co 0.75 Mn 0.75 O 4 catalyst exhibits modest OER and ORR activity with an overpotential difference (ΔE = E ORR -E OER ) of 0.79 V vs. RHE between two reactions in alkaline solution, comparable to expensive and supported IrO 2 Pt catalysts. Electrochemical studies and extensive physical characterizations indicated that amount of nickel substituted in the crystal lattice influence the bifunctional catalytic activity of the studied ternary metal oxide compositions.",

keywords = "Bifunctional, Electrocatalysts, Oxygen evolution, Oxygen reduction, Spinel oxides",

author = "P. Sivakumar and Palaniappan Subramanian and Thandavarayan Maiyalagan and Aharon Gedanken and Alex Schechter",

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year = "2019",

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doi = "10.1016/j.matchemphys.2019.03.017",

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AU - Subramanian, Palaniappan

AU - Maiyalagan, Thandavarayan

AU - Gedanken, Aharon

AU - Schechter, Alex

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N2 - Multimetallic nanostructure spinels composed of nickel, cobalt, and manganese ions were synthesized and their bifunctional catalytic activity towards oxygen evolution and oxygen reduction reaction in alkaline pH is reported. Three different compositions, namely, NiCoMnO 4 Ni 1.5 Co 0.75 Mn 0.75 O 4 and Ni 2 Co 0.5 Mn 0.5 O 4 were prepared by a simple template-free hydrothermal route followed by a thermal treatment in air at 600 °C. The ORR/OER activity and the stability of these ternary metal oxides strongly depend on the composition of transition metals. The best performing Ni 1.5 Co 0.75 Mn 0.75 O 4 catalyst exhibits modest OER and ORR activity with an overpotential difference (ΔE = E ORR -E OER ) of 0.79 V vs. RHE between two reactions in alkaline solution, comparable to expensive and supported IrO 2 Pt catalysts. Electrochemical studies and extensive physical characterizations indicated that amount of nickel substituted in the crystal lattice influence the bifunctional catalytic activity of the studied ternary metal oxide compositions.

AB - Multimetallic nanostructure spinels composed of nickel, cobalt, and manganese ions were synthesized and their bifunctional catalytic activity towards oxygen evolution and oxygen reduction reaction in alkaline pH is reported. Three different compositions, namely, NiCoMnO 4 Ni 1.5 Co 0.75 Mn 0.75 O 4 and Ni 2 Co 0.5 Mn 0.5 O 4 were prepared by a simple template-free hydrothermal route followed by a thermal treatment in air at 600 °C. The ORR/OER activity and the stability of these ternary metal oxides strongly depend on the composition of transition metals. The best performing Ni 1.5 Co 0.75 Mn 0.75 O 4 catalyst exhibits modest OER and ORR activity with an overpotential difference (ΔE = E ORR -E OER ) of 0.79 V vs. RHE between two reactions in alkaline solution, comparable to expensive and supported IrO 2 Pt catalysts. Electrochemical studies and extensive physical characterizations indicated that amount of nickel substituted in the crystal lattice influence the bifunctional catalytic activity of the studied ternary metal oxide compositions.

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KW - Spinel oxides

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Ternary nickel–cobalt–manganese spinel oxide nanoparticles as heterogeneous electrocatalysts for oxygen evolution and oxygen reduction reaction

Abstract

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Keywords

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