skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Porous Pyrochlore Y 2[Ru 1.6Y 0.4]O 7–δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media

Abstract

A robust porous structure is often needed for practical applications in electrochemical devices, such as fuel cells, batteries, and electrolyzers. While templating approach is useful for the preparation of porous materials in general, it is not effective for the synthesis of oxide-based electrocatalysts owing to the chemical instability of disordered porous materials thus created. Now the synthesis of phase-pure porous yttrium ruthenate pyrochlore oxide using an unconventional porogen of perchloric acid is presented here. The lattice oxygen defects are formed by the mixed-valence state of Ru 4+/ 5+ through the partial substitution of Ru 4+ with Y 3+ cations, leading to the formation of mixed B-site Y 2[Ru 1.6Y 0.4]O 7-δ. This porous Y 2[Ru 1.6Y 0.4]O 7-δ electrocatalyst exhibits a turnover frequency (TOF) of 560 s -1 (at 1.5 V versus RHE) for the oxygen evolution reaction, which is two orders of magnitude higher than that of the RuO 2 reference catalyst (5.41 s -1).

Authors:
ORCiD logo [1];  [1];  [2];  [1];  [3]; ORCiD logo [1]
  1. Univ. of Illinois, Urbana, IL (United States). Dept. of Chemical and Biomolecular Engineering
  2. Univ. of Illinois, Urbana, IL (United States). Dept. of Chemical and Biomolecular Engineering; Tongji Univ., Shanghai (China). The Inst. for Advanced Materials & Nano Biomedicine
  3. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Univ. of Illinois (United States); China Scholarship Council
OSTI Identifier:
1494800
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 57; Journal Issue: 42; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; electrocatalysis; oxygen evolution reaction; porous metal oxides; pyrochlore; water splitting

Citation Formats

Kim, Jaemin, Shih, Pei-Chieh, Qin, Yao, Al-Bardan, Zaid, Sun, Cheng-Jun, and Yang, Hong. A Porous Pyrochlore Y2[Ru1.6Y0.4]O7–δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media. United States: N. p., 2018. Web. doi:10.1002/anie.201808825.
Kim, Jaemin, Shih, Pei-Chieh, Qin, Yao, Al-Bardan, Zaid, Sun, Cheng-Jun, & Yang, Hong. A Porous Pyrochlore Y2[Ru1.6Y0.4]O7–δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media. United States. doi:10.1002/anie.201808825.
Kim, Jaemin, Shih, Pei-Chieh, Qin, Yao, Al-Bardan, Zaid, Sun, Cheng-Jun, and Yang, Hong. Thu . "A Porous Pyrochlore Y2[Ru1.6Y0.4]O7–δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media". United States. doi:10.1002/anie.201808825. https://www.osti.gov/servlets/purl/1494800.
@article{osti_1494800,
title = {A Porous Pyrochlore Y2[Ru1.6Y0.4]O7–δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media},
author = {Kim, Jaemin and Shih, Pei-Chieh and Qin, Yao and Al-Bardan, Zaid and Sun, Cheng-Jun and Yang, Hong},
abstractNote = {A robust porous structure is often needed for practical applications in electrochemical devices, such as fuel cells, batteries, and electrolyzers. While templating approach is useful for the preparation of porous materials in general, it is not effective for the synthesis of oxide-based electrocatalysts owing to the chemical instability of disordered porous materials thus created. Now the synthesis of phase-pure porous yttrium ruthenate pyrochlore oxide using an unconventional porogen of perchloric acid is presented here. The lattice oxygen defects are formed by the mixed-valence state of Ru4+/5+ through the partial substitution of Ru4+ with Y3+ cations, leading to the formation of mixed B-site Y2[Ru1.6Y0.4]O7-δ. This porous Y2[Ru1.6Y0.4]O7-δ electrocatalyst exhibits a turnover frequency (TOF) of 560 s-1 (at 1.5 V versus RHE) for the oxygen evolution reaction, which is two orders of magnitude higher than that of the RuO2 reference catalyst (5.41 s-1).},
doi = {10.1002/anie.201808825},
journal = {Angewandte Chemie (International Edition)},
number = 42,
volume = 57,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976


Synthesis of a metallic mesoporous pyrochlore as a catalyst for lithium–O2 batteries
journal, November 2012

  • Oh, Si Hyoung; Black, Robert; Pomerantseva, Ekaterina
  • Nature Chemistry, Vol. 4, Issue 12, p. 1004-1010
  • DOI: 10.1038/nchem.1499

A new family of mesoporous molecular sieves prepared with liquid crystal templates
journal, December 1992

  • Beck, J. S.; Vartuli, J. C.; Roth, W. J.
  • Journal of the American Chemical Society, Vol. 114, Issue 27, p. 10834-10843
  • DOI: 10.1021/ja00053a020

In Situ Formation of an Oxygen-Evolving Catalyst in Neutral Water Containing Phosphate and Co2+
journal, August 2008


Triblock Copolymer Syntheses of Mesoporous Silica with Periodic 50 to 300 Angstrom Pores
journal, January 1998