Role of surface area on the performance of iron nickel nanoparticles for the oxygen evolution reaction (OER)

P. Acharya, J. N. Burrow, M. Abolhassani, L. F. Greenlee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Iron-nickel bimetallic electrocatalysts have recently emerged as some of the best candidates for the oxygen evolution reaction (OER) in alkaline electrolyte. Understanding the effects of composition and morphology of iron-nickel nanoparticles is crucial for optimization and enhanced electrocatalyst performance. Both physical surface area and electrochemical surface area (ECSA) are functions of morphology. In this study, three different iron-nickel nanoparticle catalysts were synthesized. The three catalysts were varied based on morphology (alloy versus core-shell) and composition (high versus low stabilizer concentration). Brunauer-Emmett-Teller (BET) surface area analysis was conducted on the synthesized iron-nickel nanoparticles using a physisorption analyzer while electrochemical impedance spectroscopy (EIS) was employed to quantify the ECSA by capacitance. Comparison of ECSA and BET results to electrocatalyst overpotential suggests both available surface area and nanoparticle morphology play roles in electrocatalytic activity.

Original languageEnglish (US)
Title of host publicationECS Transactions
EditorsH. Xu, K. E. Ayers, P. J. Kulesza, G. Wu
PublisherElectrochemical Society Inc.
Pages81-89
Number of pages9
Edition11
ISBN (Print)9781607688396
DOIs
StatePublished - 2018
EventSymposium on Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 4 - 233rd ECS Meeting - Seattle, United States
Duration: May 13 2018May 17 2018

Publication series

NameECS Transactions
Number11
Volume85
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Oxygen or Hydrogen Evolution Catalysis for Water Electrolysis 4 - 233rd ECS Meeting
Country/TerritoryUnited States
CitySeattle
Period5/13/185/17/18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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