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Title: High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application

Abstract

In this paper, tungsten based support was prepared by polycondensation of resorcinol and formaldehyde from ammonium metatungstate, in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst on this support was synthesized by borohydride reduction method. The obtained materials were characterized by High Resolution Transmission Electron Microscopy (HRTEM), Electron Energy Loss Spectroscopy (EELS), X-ray Photoelectron Spectroscopy (XPS) and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of single Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. It was found that tungsten based support consisted of W, WC and WO3 species. The presence of metallic palladium – Pd(0) in the Pd/W@WCWO3 catalyst was revealed, as well. The catalytic activity and stability for the oxygen reduction were investigated in acid and alkaline solutions, by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts' activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). Finally, WC supported Pd nanoparticles have shown high activity and superior stability, comparable even to Pt based catalysts, especially in alkaline electrolytes.

Authors:
 [1];  [2];  [3];  [2];  [1];  [1];  [1]
  1. University of Belgrade (Serbia)
  2. AGH University of Science and Technology, Krakow (Poland)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Ministry of Education, Science and Technological Development
OSTI Identifier:
1435091
Alternate Identifier(s):
OSTI ID: 1549548
Grant/Contract Number:  
AC02-05CH11231; 172054
Resource Type:
Accepted Manuscript
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 247; Journal ID: ISSN 0013-4686
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; fuel cells; oxygen reduction; Pd nanoparticles; tungsten based support; core-shell structure

Citation Formats

Elezovic, N. R., Zabinski, P., Ercius, P., Wytrwal, M., Radmilovic, V. R., Lacnjevac, U. Č., and Krstajic, N. V. High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application. United States: N. p., 2017. Web. doi:10.1016/j.electacta.2017.07.066.
Elezovic, N. R., Zabinski, P., Ercius, P., Wytrwal, M., Radmilovic, V. R., Lacnjevac, U. Č., & Krstajic, N. V. High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application. United States. https://doi.org/10.1016/j.electacta.2017.07.066
Elezovic, N. R., Zabinski, P., Ercius, P., Wytrwal, M., Radmilovic, V. R., Lacnjevac, U. Č., and Krstajic, N. V. Wed . "High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application". United States. https://doi.org/10.1016/j.electacta.2017.07.066. https://www.osti.gov/servlets/purl/1435091.
@article{osti_1435091,
title = {High surface area Pd nanocatalyst on core-shell tungsten based support as a beneficial catalyst for low temperature fuel cells application},
author = {Elezovic, N. R. and Zabinski, P. and Ercius, P. and Wytrwal, M. and Radmilovic, V. R. and Lacnjevac, U. Č. and Krstajic, N. V.},
abstractNote = {In this paper, tungsten based support was prepared by polycondensation of resorcinol and formaldehyde from ammonium metatungstate, in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst on this support was synthesized by borohydride reduction method. The obtained materials were characterized by High Resolution Transmission Electron Microscopy (HRTEM), Electron Energy Loss Spectroscopy (EELS), X-ray Photoelectron Spectroscopy (XPS) and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of single Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. It was found that tungsten based support consisted of W, WC and WO3 species. The presence of metallic palladium – Pd(0) in the Pd/W@WCWO3 catalyst was revealed, as well. The catalytic activity and stability for the oxygen reduction were investigated in acid and alkaline solutions, by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts' activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). Finally, WC supported Pd nanoparticles have shown high activity and superior stability, comparable even to Pt based catalysts, especially in alkaline electrolytes.},
doi = {10.1016/j.electacta.2017.07.066},
journal = {Electrochimica Acta},
number = ,
volume = 247,
place = {United States},
year = {Wed Jul 12 00:00:00 EDT 2017},
month = {Wed Jul 12 00:00:00 EDT 2017}
}

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Cited by: 13 works
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