Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts [Balancing activity, stability and conductivity of nanoporous core-shell Ir/IrO2 oxygen evolution catalysts]
Abstract
The selection of oxide materials for catalyzing the Oxygen Evolution Reaction in acid-based electrolyzers must be guided by the proper balance between activity, stability and conductivity – a challenging mission of great importance for delivering affordable and environmentally friendly hydrogen. Here we report that the highly conductive nanoporous architecture of an iridium oxide shell on a metallic iridium core, formed through the fast dealloying of osmium from an Ir25Os75 alloy, exhibits an exceptional balance between oxygen evolution activity and stability as quantified by the Activity-Stability FactorASF. Based on this metric, the nanoporous Ir/IrO2 morphology of dealloyed Ir25Os75 shows a factor of ~30 improvement ASFrelative to conventional Ir-based oxide materials and a ~8 times improvement over dealloyed Ir25Os75 nanoparticles due to optimized stability and conductivity, respectively. Here, we propose that the Activity-Stability FactorASF is the key “metric” for determining the technological relevance of oxide-based anodic water electrolyzer catalysts.
- Authors:
-
[1];
[3];
[3];
[3];
- Pusan National Univ., Pusan (Korea)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Korea Advanced Institute of Science and Technology, Daejeon (Korea)
- Johns Hopkins Univ., Baltimore, MD (United States)
- Drexel Univ., Philadelphia, PA (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); Korea Institute of Energy Technology Evaluation and Planning (KETEP); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1410807
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Kim, Yong -Tae, Lopes, Pietro Papa, Park, Shin -Ae, Lee, A-Yeong, Lim, Jinkyu, Lee, Hyunjoo, Back, Seoin, Jung, Yousung, Danilovic, Nemanja, Stamenkovic, Vojislav, Erlebacher, Jonah, Snyder, Joshua, and Markovic, Nenad M. Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts [Balancing activity, stability and conductivity of nanoporous core-shell Ir/IrO2 oxygen evolution catalysts]. United States: N. p., 2017.
Web. doi:10.1038/s41467-017-01734-7.
Kim, Yong -Tae, Lopes, Pietro Papa, Park, Shin -Ae, Lee, A-Yeong, Lim, Jinkyu, Lee, Hyunjoo, Back, Seoin, Jung, Yousung, Danilovic, Nemanja, Stamenkovic, Vojislav, Erlebacher, Jonah, Snyder, Joshua, & Markovic, Nenad M. Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts [Balancing activity, stability and conductivity of nanoporous core-shell Ir/IrO2 oxygen evolution catalysts]. United States. https://doi.org/10.1038/s41467-017-01734-7
Kim, Yong -Tae, Lopes, Pietro Papa, Park, Shin -Ae, Lee, A-Yeong, Lim, Jinkyu, Lee, Hyunjoo, Back, Seoin, Jung, Yousung, Danilovic, Nemanja, Stamenkovic, Vojislav, Erlebacher, Jonah, Snyder, Joshua, and Markovic, Nenad M. Mon .
"Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts [Balancing activity, stability and conductivity of nanoporous core-shell Ir/IrO2 oxygen evolution catalysts]". United States. https://doi.org/10.1038/s41467-017-01734-7. https://www.osti.gov/servlets/purl/1410807.
@article{osti_1410807,
title = {Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts [Balancing activity, stability and conductivity of nanoporous core-shell Ir/IrO2 oxygen evolution catalysts]},
author = {Kim, Yong -Tae and Lopes, Pietro Papa and Park, Shin -Ae and Lee, A-Yeong and Lim, Jinkyu and Lee, Hyunjoo and Back, Seoin and Jung, Yousung and Danilovic, Nemanja and Stamenkovic, Vojislav and Erlebacher, Jonah and Snyder, Joshua and Markovic, Nenad M.},
abstractNote = {The selection of oxide materials for catalyzing the Oxygen Evolution Reaction in acid-based electrolyzers must be guided by the proper balance between activity, stability and conductivity – a challenging mission of great importance for delivering affordable and environmentally friendly hydrogen. Here we report that the highly conductive nanoporous architecture of an iridium oxide shell on a metallic iridium core, formed through the fast dealloying of osmium from an Ir25Os75 alloy, exhibits an exceptional balance between oxygen evolution activity and stability as quantified by the Activity-Stability FactorASF. Based on this metric, the nanoporous Ir/IrO2 morphology of dealloyed Ir25Os75 shows a factor of ~30 improvement ASFrelative to conventional Ir-based oxide materials and a ~8 times improvement over dealloyed Ir25Os75 nanoparticles due to optimized stability and conductivity, respectively. Here, we propose that the Activity-Stability FactorASF is the key “metric” for determining the technological relevance of oxide-based anodic water electrolyzer catalysts.},
doi = {10.1038/s41467-017-01734-7},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {Mon Nov 13 00:00:00 EST 2017},
month = {Mon Nov 13 00:00:00 EST 2017}
}
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- Crowtz, T. C.; Dahn, J. R.
- Journal of The Electrochemical Society, Vol. 165, Issue 10
Effect of Electronic Conductivities of Iridium Oxide/Doped SnO2 Oxygen-Evolving Catalysts on the Polarization Properties in Proton Exchange Membrane Water Electrolysis
journal, January 2019
- Ohno, Hideaki; Nohara, Shinji; Kakinuma, Katsuyoshi
- Catalysts, Vol. 9, Issue 1
Insights into Correlation among Surface‐Structure‐Activity of Cobalt‐Derived Pre‐Catalyst for Oxygen Evolution Reaction
journal, January 2020
- Li, Ruchun; Hu, Bihua; Yu, Tongwen
- Advanced Science, Vol. 7, Issue 5
Iridium–Tungsten Alloy Nanodendrites as pH-Universal Water-Splitting Electrocatalysts
journal, August 2018
- Lv, Fan; Feng, Jianrui; Wang, Kai
- ACS Central Science, Vol. 4, Issue 9
Nanoscale kinetics of asymmetrical corrosion in core-shell nanoparticles
journal, March 2018
- Shan, Hao; Gao, Wenpei; Xiong, Yalin
- Nature Communications, Vol. 9, Issue 1
Revealing the nature of active sites in electrocatalysis
journal, January 2019
- Garlyyev, Batyr; Fichtner, Johannes; Piqué, Oriol
- Chemical Science, Vol. 10, Issue 35