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Title: Synthesis of Pd 9Ru@Pt nanoparticles for oxygen reduction reaction in acidic electrolytes

Abstract

Nanoparticles of PdRu, Pd₃Ru, and Pd₉Ru are synthesized and impregnated on carbon black via a wet chemical reflux process. X-ray diffraction patterns of the as-synthesized samples, Pd xRu/C (x=1/3/9), suggest succesful formation of alloy without presence of individual Pd and Ru nanoparticles. Images from transmission electron microscope confirm irregularly-shaped nanoparticles with average size below 3 nm. Analysis from extended X-ray absorption fine structure on both Pd and Ru K-edge absorption profiles indicate the Ru atoms are enriched on the surface of Pd xRu/C. Among these samples, the Pd₉Ru/C exhibits the strongest electrocatalytic activity for oxygen reduction reaction (ORR) in an oxygen-saturated 0.1 M aqueous HClO₄ solution. Subsequently, the Pd₉Ru/C undegoes Cu under potential deposition, followed by a galvanic displacement reaction to deposit a Pt monolayer on the Pd₉Ru surface (Pd₉Ru@Pt). The Pd₉Ru@Pt reveals better ORR performance than that of Pt, reaching a mass activity of 0.38 mA μg⁻¹ Pt, as compared to that of commercially available Pt nanoparticles (0.107 mA μg⁻¹ Pt). Thus, the mechanisms responsible for the ORR enhancement are attributed to the combined effects of lattice strain and ligand interaction. In addition, this core-shell Pd₉Ru@Pt electrocatalyst represents a substantial reduction in the amount of Pt consumption and rawmore » material cost.« less

Authors:
 [1];  [2];  [1];  [1];  [3]
  1. National Chiao Tung Univ., Hsin-chu (Taiwan)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. National Synchrotron Radiation Research Center, Hsin-chu (Taiwan)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1183838
Report Number(s):
BNL-107884-2015-JA
Journal ID: ISSN 0378-7753; R&D Project: CO026; KC0304030
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 277; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; palladium; ruthenium; platinum; oxygen reduction reaction; core-shell nanoparticles

Citation Formats

Sun, Yu, Hsieh, Yu -Chi, Chang, Li -Chung, Wu, Pu -Wei, and Lee, Jyh -Fu. Synthesis of Pd9Ru@Pt nanoparticles for oxygen reduction reaction in acidic electrolytes. United States: N. p., 2014. Web. doi:10.1016/j.jpowsour.2014.11.102.
Sun, Yu, Hsieh, Yu -Chi, Chang, Li -Chung, Wu, Pu -Wei, & Lee, Jyh -Fu. Synthesis of Pd9Ru@Pt nanoparticles for oxygen reduction reaction in acidic electrolytes. United States. doi:10.1016/j.jpowsour.2014.11.102.
Sun, Yu, Hsieh, Yu -Chi, Chang, Li -Chung, Wu, Pu -Wei, and Lee, Jyh -Fu. Sat . "Synthesis of Pd9Ru@Pt nanoparticles for oxygen reduction reaction in acidic electrolytes". United States. doi:10.1016/j.jpowsour.2014.11.102. https://www.osti.gov/servlets/purl/1183838.
@article{osti_1183838,
title = {Synthesis of Pd9Ru@Pt nanoparticles for oxygen reduction reaction in acidic electrolytes},
author = {Sun, Yu and Hsieh, Yu -Chi and Chang, Li -Chung and Wu, Pu -Wei and Lee, Jyh -Fu},
abstractNote = {Nanoparticles of PdRu, Pd₃Ru, and Pd₉Ru are synthesized and impregnated on carbon black via a wet chemical reflux process. X-ray diffraction patterns of the as-synthesized samples, PdxRu/C (x=1/3/9), suggest succesful formation of alloy without presence of individual Pd and Ru nanoparticles. Images from transmission electron microscope confirm irregularly-shaped nanoparticles with average size below 3 nm. Analysis from extended X-ray absorption fine structure on both Pd and Ru K-edge absorption profiles indicate the Ru atoms are enriched on the surface of PdxRu/C. Among these samples, the Pd₉Ru/C exhibits the strongest electrocatalytic activity for oxygen reduction reaction (ORR) in an oxygen-saturated 0.1 M aqueous HClO₄ solution. Subsequently, the Pd₉Ru/C undegoes Cu under potential deposition, followed by a galvanic displacement reaction to deposit a Pt monolayer on the Pd₉Ru surface (Pd₉Ru@Pt). The Pd₉Ru@Pt reveals better ORR performance than that of Pt, reaching a mass activity of 0.38 mA μg⁻¹ Pt, as compared to that of commercially available Pt nanoparticles (0.107 mA μg⁻¹ Pt). Thus, the mechanisms responsible for the ORR enhancement are attributed to the combined effects of lattice strain and ligand interaction. In addition, this core-shell Pd₉Ru@Pt electrocatalyst represents a substantial reduction in the amount of Pt consumption and raw material cost.},
doi = {10.1016/j.jpowsour.2014.11.102},
journal = {Journal of Power Sources},
number = C,
volume = 277,
place = {United States},
year = {2014},
month = {11}
}

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Works referencing / citing this record:

Conformal Deposition of RuO 2 on Cu via a Galvanic Cementation Reaction
journal, January 2019

  • Lin, Chun; Chou, Shih-Cheng; Tso, Kuang-Chih
  • Journal of The Electrochemical Society, Vol. 166, Issue 10
  • DOI: 10.1149/2.0061912jes