Compositional optimization of alloy FexNiy(OH)2 nanoparticles for alkaline electrochemical oxygen evolution

L. F. Greenlee; P. Acharya; Z. Nelson

doi:10.1149/07709.0025ecst

Compositional optimization of alloy Fe_xNi_y(OH)₂ nanoparticles for alkaline electrochemical oxygen evolution

L. F. Greenlee, P. Acharya, Z. Nelson

Chemical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

Alloy FeNi nanoparticles were synthesized and evaluated as electrocatalysts for the oxygen evolution reaction in alkaline electrolyte. Electron microscopy imaging indicates nanoparticles were formed with a spherical morphology, and initial elemental analysis suggests significant oxygen content in the bimetallic particles. A molar ratio range from 5:1 to 1:5 Fe.Ni in the as-synthesized nanoparticles was tested. The effect of polyvinylpyrrolidone stabilizer on nanoparticle performance was also evaluated. Catalytic performance of the nanoparticles increased with decreasing Fe:Ni molar ratio and PVP:Ni molar ratio. Alloy nanoparticles synthesized with a Fe:Ni ratio of 1:5 and a PVP:Ni ratio of 0.001 resulted in an overpotential of 295 mV at 10 mA/cm², a Tafel slope of 40 mV/dec, and a mass-based activity of 3343 mA/mg at 1.6 V vs. RHE.

Original language	English (US)
Title of host publication	Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3
Editors	H. Xu, V. Ramani, P. J. Kulesza
Publisher	Electrochemical Society Inc.
Pages	25-38
Number of pages	14
Edition	9
ISBN (Electronic)	9781607688129
DOIs	https://doi.org/10.1149/07709.0025ecst
State	Published - 2017
Event	Symposium on Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3 - 231st ECS Meeting 2017 - New Orleans, United States Duration: May 28 2017 → Jun 1 2017

Publication series

Name	ECS Transactions
Number	9
Volume	77
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Symposium on Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3 - 231st ECS Meeting 2017
Country/Territory	United States
City	New Orleans
Period	5/28/17 → 6/1/17

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1149/07709.0025ecst

Cite this

Greenlee, L. F., Acharya, P., & Nelson, Z. (2017). Compositional optimization of alloy Fe_xNi_y(OH)₂ nanoparticles for alkaline electrochemical oxygen evolution. In H. Xu, V. Ramani, & P. J. Kulesza (Eds.), Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3 (9 ed., pp. 25-38). (ECS Transactions; Vol. 77, No. 9). Electrochemical Society Inc.. https://doi.org/10.1149/07709.0025ecst

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abstract = "Alloy FeNi nanoparticles were synthesized and evaluated as electrocatalysts for the oxygen evolution reaction in alkaline electrolyte. Electron microscopy imaging indicates nanoparticles were formed with a spherical morphology, and initial elemental analysis suggests significant oxygen content in the bimetallic particles. A molar ratio range from 5:1 to 1:5 Fe.Ni in the as-synthesized nanoparticles was tested. The effect of polyvinylpyrrolidone stabilizer on nanoparticle performance was also evaluated. Catalytic performance of the nanoparticles increased with decreasing Fe:Ni molar ratio and PVP:Ni molar ratio. Alloy nanoparticles synthesized with a Fe:Ni ratio of 1:5 and a PVP:Ni ratio of 0.001 resulted in an overpotential of 295 mV at 10 mA/cm2, a Tafel slope of 40 mV/dec, and a mass-based activity of 3343 mA/mg at 1.6 V vs. RHE.",

author = "Greenlee, {L. F.} and P. Acharya and Z. Nelson",

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Greenlee, LF, Acharya, P & Nelson, Z 2017, Compositional optimization of alloy Fe_xNi_y(OH)₂ nanoparticles for alkaline electrochemical oxygen evolution. in H Xu, V Ramani & PJ Kulesza (eds), Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3. 9 edn, ECS Transactions, no. 9, vol. 77, Electrochemical Society Inc., pp. 25-38, Symposium on Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3 - 231st ECS Meeting 2017, New Orleans, United States, 5/28/17. https://doi.org/10.1149/07709.0025ecst

Compositional optimization of alloy Fe_xNi_y(OH)₂ nanoparticles for alkaline electrochemical oxygen evolution. / Greenlee, L. F.; Acharya, P.; Nelson, Z.

Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 3. ed. / H. Xu; V. Ramani; P. J. Kulesza. 9. ed. Electrochemical Society Inc., 2017. p. 25-38 (ECS Transactions; Vol. 77, No. 9).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Compositional optimization of alloy FexNiy(OH)2 nanoparticles for alkaline electrochemical oxygen evolution

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AU - Acharya, P.

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N1 - Publisher Copyright: © The Electrochemical Society.

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N2 - Alloy FeNi nanoparticles were synthesized and evaluated as electrocatalysts for the oxygen evolution reaction in alkaline electrolyte. Electron microscopy imaging indicates nanoparticles were formed with a spherical morphology, and initial elemental analysis suggests significant oxygen content in the bimetallic particles. A molar ratio range from 5:1 to 1:5 Fe.Ni in the as-synthesized nanoparticles was tested. The effect of polyvinylpyrrolidone stabilizer on nanoparticle performance was also evaluated. Catalytic performance of the nanoparticles increased with decreasing Fe:Ni molar ratio and PVP:Ni molar ratio. Alloy nanoparticles synthesized with a Fe:Ni ratio of 1:5 and a PVP:Ni ratio of 0.001 resulted in an overpotential of 295 mV at 10 mA/cm2, a Tafel slope of 40 mV/dec, and a mass-based activity of 3343 mA/mg at 1.6 V vs. RHE.

AB - Alloy FeNi nanoparticles were synthesized and evaluated as electrocatalysts for the oxygen evolution reaction in alkaline electrolyte. Electron microscopy imaging indicates nanoparticles were formed with a spherical morphology, and initial elemental analysis suggests significant oxygen content in the bimetallic particles. A molar ratio range from 5:1 to 1:5 Fe.Ni in the as-synthesized nanoparticles was tested. The effect of polyvinylpyrrolidone stabilizer on nanoparticle performance was also evaluated. Catalytic performance of the nanoparticles increased with decreasing Fe:Ni molar ratio and PVP:Ni molar ratio. Alloy nanoparticles synthesized with a Fe:Ni ratio of 1:5 and a PVP:Ni ratio of 0.001 resulted in an overpotential of 295 mV at 10 mA/cm2, a Tafel slope of 40 mV/dec, and a mass-based activity of 3343 mA/mg at 1.6 V vs. RHE.

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