Single-Phase Pyrochlore Y2Ir2O7 Electrocatalyst on the Activity of Oxygen Evolution Reaction
Abstract
Single phase pyrochlore-type Y2Ir2O7 electrocatalyst was made through the sol-gel synthesis. This catalyst has high activity and stability towards oxygen evolution reaction (OER) in acid. Here, chronopotentiometry analysis showed no obvious change in overpotential for more than 24 h measurement at 10 mA/cm2geo. X-ray absorption spectroscopy (XAS) demonstrates that the single electron filling in e" orbital of Ir 5d states, induced by the spin-orbital coupling, could contribute to the improved OER activity.
- Authors:
-
- Univ. of Illinois at Urbana−Champaign, Urbana, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); University of Illinois System
- OSTI Identifier:
- 1497018
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- ACS Applied Energy Materials
- Additional Journal Information:
- Journal Volume: 1; Journal Issue: 8; Journal ID: ISSN 2574-0962
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Y2Ir2O7; electrocatalysis; oxygen evolution reaction; pyrochlore; water splitting
Citation Formats
Shih, Pei -Chieh, Kim, Jaemin, Sun, Cheng -Jun, and Yang, Hong. Single-Phase Pyrochlore Y2Ir2O7 Electrocatalyst on the Activity of Oxygen Evolution Reaction. United States: N. p., 2018.
Web. doi:10.1021/acsaem.8b00691.
Shih, Pei -Chieh, Kim, Jaemin, Sun, Cheng -Jun, & Yang, Hong. Single-Phase Pyrochlore Y2Ir2O7 Electrocatalyst on the Activity of Oxygen Evolution Reaction. United States. https://doi.org/10.1021/acsaem.8b00691
Shih, Pei -Chieh, Kim, Jaemin, Sun, Cheng -Jun, and Yang, Hong. 2018.
"Single-Phase Pyrochlore Y2Ir2O7 Electrocatalyst on the Activity of Oxygen Evolution Reaction". United States. https://doi.org/10.1021/acsaem.8b00691. https://www.osti.gov/servlets/purl/1497018.
@article{osti_1497018,
title = {Single-Phase Pyrochlore Y2Ir2O7 Electrocatalyst on the Activity of Oxygen Evolution Reaction},
author = {Shih, Pei -Chieh and Kim, Jaemin and Sun, Cheng -Jun and Yang, Hong},
abstractNote = {Single phase pyrochlore-type Y2Ir2O7 electrocatalyst was made through the sol-gel synthesis. This catalyst has high activity and stability towards oxygen evolution reaction (OER) in acid. Here, chronopotentiometry analysis showed no obvious change in overpotential for more than 24 h measurement at 10 mA/cm2geo. X-ray absorption spectroscopy (XAS) demonstrates that the single electron filling in e" orbital of Ir 5d states, induced by the spin-orbital coupling, could contribute to the improved OER activity.},
doi = {10.1021/acsaem.8b00691},
url = {https://www.osti.gov/biblio/1497018},
journal = {ACS Applied Energy Materials},
issn = {2574-0962},
number = 8,
volume = 1,
place = {United States},
year = {Thu Jul 26 00:00:00 EDT 2018},
month = {Thu Jul 26 00:00:00 EDT 2018}
}
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Cited by: 36 works
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Figures / Tables:
Figure 1: (a) PXRD and the corresponding Rietveld refinement with the residue plot, (b) SEM image, and (c) TEM micrograph of the as-made Y2Ir2O7 electrocatalyst. Color code: red, experimentally determined diffraction pattern; orange, simulated pattern; blue: residue; and gray, baseline. Inset shows an illustration of the unit cell of themore »
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