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Title: Activity and Durability of Iridium Nanoparticles in the Oxygen Evolution Reaction

Abstract

Unsupported iridium (Ir) nanoparticles, that serve as standard oxygen evolution reaction (OER) catalysts in acidic electrolyzers, were investigated for electrochemical performance and durability in rotating disk electrode (RDE) half-cells. Fixed potential holds and potential cycling were applied to probe the durability of Ir nanoparticles, and performance losses were found to be driven by particle growth (coarsening) at moderate potential (1.4 to 1.6 V) and Ir dissolution at higher potential (>/=1.8 V). Several different commercially available samples were evaluated and standardized conditions for performance comparison are reported. In conclusion, the electrocatalyst RDE results have also been compared to results obtained for performance and durability in electrolysis cells.

Authors:
 [1];  [2];  [3];  [1];  [1];  [3];  [2];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science Center
  2. Giner, Inc., Newton, MA (United States)
  3. Colorado School of Mines, Golden, CO (United States). Dept. of Chemistry
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1290782
Report Number(s):
NREL/JA-5900-66915
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
AC36-08GO28308; SC0007471
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 163; Journal Issue: 11; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; electrocatalysis; electrolysis; iridium

Citation Formats

Alia, Shaun M., Rasimick, Brian, Ngo, Chilan, Neyerlin, K. C., Kocha, Shyam S., Pylypenko, Svitlana, Xu, Hui, and Pivovar, Bryan S. Activity and Durability of Iridium Nanoparticles in the Oxygen Evolution Reaction. United States: N. p., 2016. Web. doi:10.1149/2.0151611jes.
Alia, Shaun M., Rasimick, Brian, Ngo, Chilan, Neyerlin, K. C., Kocha, Shyam S., Pylypenko, Svitlana, Xu, Hui, & Pivovar, Bryan S. Activity and Durability of Iridium Nanoparticles in the Oxygen Evolution Reaction. United States. doi:10.1149/2.0151611jes.
Alia, Shaun M., Rasimick, Brian, Ngo, Chilan, Neyerlin, K. C., Kocha, Shyam S., Pylypenko, Svitlana, Xu, Hui, and Pivovar, Bryan S. Fri . "Activity and Durability of Iridium Nanoparticles in the Oxygen Evolution Reaction". United States. doi:10.1149/2.0151611jes. https://www.osti.gov/servlets/purl/1290782.
@article{osti_1290782,
title = {Activity and Durability of Iridium Nanoparticles in the Oxygen Evolution Reaction},
author = {Alia, Shaun M. and Rasimick, Brian and Ngo, Chilan and Neyerlin, K. C. and Kocha, Shyam S. and Pylypenko, Svitlana and Xu, Hui and Pivovar, Bryan S.},
abstractNote = {Unsupported iridium (Ir) nanoparticles, that serve as standard oxygen evolution reaction (OER) catalysts in acidic electrolyzers, were investigated for electrochemical performance and durability in rotating disk electrode (RDE) half-cells. Fixed potential holds and potential cycling were applied to probe the durability of Ir nanoparticles, and performance losses were found to be driven by particle growth (coarsening) at moderate potential (1.4 to 1.6 V) and Ir dissolution at higher potential (>/=1.8 V). Several different commercially available samples were evaluated and standardized conditions for performance comparison are reported. In conclusion, the electrocatalyst RDE results have also been compared to results obtained for performance and durability in electrolysis cells.},
doi = {10.1149/2.0151611jes},
journal = {Journal of the Electrochemical Society},
number = 11,
volume = 163,
place = {United States},
year = {2016},
month = {7}
}

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    Works referencing / citing this record:

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