Published August 20, 2015 | Version v1
Journal article Metadata-only

A New Composite Support for Pd Catalysts for Ethylene Glycol Electrooxidation in Alkaline Solution: Effect of (Ru,Sn)O2 solid solution

Creators

  • 1. College of Materials Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350108 (China)
  • 2. Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Chinese Academy of Sciences, Fuzhou 350002 (China)

Description

Highlights: • Hydrothermal-prepared RuO2-SnO2 was added to XC-72 carbon black as composite support. • (Ru,Sn)O2 solid solution increases the EAS and specific activity of Pd. • (Ru,Sn)O2 changes the electron structure of Pd 3d and reduces CO coverage on Pd. • (Ru,Sn)O2 solid solution also enhances the OHads adsorption on Pd surface. • Pd/RuO2-SnO2/C catalyst shows highest activity and stability for EG oxidation. - Abstract: In this paper, RuO2-SnO2 binary oxides were prepared using a hydrothermal approach and added to Vulcan XC-72 carbon black as new support material for Pd. The X-ray diffraction, Transmission electron microscopy and X-ray photoelectronic spectra results show that the addition of binary oxides leads to the formation of (Ru,Sn)O2 solid solution in Pd/C catalyst and reduces the particle size of Pd particles due to the anchoring effect. In addition, the electrochemical CO-striping measurement reveals that the Pd/RuO2-SnO2/C catalyst exhibits the largest electrochemical active surface and the best CO tolerance. Moreover, cyclic voltammetry and chronoamperometry tests demonstrate that the Pd/RuO2-SnO2/C catalyst possesses a much higher specific activity (4.4 mA cm−2) than that of the Pd/C catalyst (3.2 mA cm−2) towards ethylene glycol electrooxidation in alkaline media, and better stability as well. These results support the suitability of Pd/RuO2-SnO2/C catalyst developed in this work as a promising candidate for direct alcohol fuel cells (DAFCs) application

Availability note (English)

Available from http://dx.doi.org/10.1016/j.electacta.2015.05.166

Additional details

Identifiers

DOI
10.1016/j.electacta.2015.05.166;
PII
S0013-4686(15)01331-6;

Publishing Information

Journal Title
Electrochimica Acta
Journal Volume
174
Journal Page Range
p. 178-184
ISSN
0013-4686
CODEN
ELCAAV

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47058218
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ADSORPTION; ALCOHOL FUEL CELLS; AMPEROMETRY; CARBON BLACK; CATALYSTS; ELECTROCHEMISTRY; ELECTRONIC STRUCTURE; GLYCOLS; OXIDATION; PARTICLE SIZE; PARTICLES; RUTHENIUM OXIDES; SOLID SOLUTIONS; SPECTRA; SURFACES; TIN OXIDES; TRANSMISSION ELECTRON MICROSCOPY; VOLTAMETRY; X RADIATION; X-RAY DIFFRACTION
Descriptors DEC
ALCOHOLS; CARBON; CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; CHEMISTRY; COHERENT SCATTERING; DIFFRACTION; DIRECT ENERGY CONVERTERS; DISPERSIONS; ELECTROCHEMICAL CELLS; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELEMENTS; FUEL CELLS; HOMOGENEOUS MIXTURES; HYDROXY COMPOUNDS; IONIZING RADIATIONS; MICROSCOPY; MIXTURES; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; RADIATIONS; REFRACTORY METAL COMPOUNDS; RUTHENIUM COMPOUNDS; SCATTERING; SIZE; SOLUTIONS; SORPTION; TIN COMPOUNDS; TITRATION; TRANSITION ELEMENT COMPOUNDS; VOLUMETRIC ANALYSIS

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.