Effect of different solvent ratio (ethylene glycol/water) on the preparation of Pt/C catalyst and its activity toward oxygen reduction reaction

Download
  1. Get@NRC: Effect of different solvent ratio (ethylene glycol/water) on the preparation of Pt/C catalyst and its activity toward oxygen reduction reaction (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1039/c5ra08068a
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleRSC Advances
ISSN2046-2069
Volume5
Issue70
Pages5657056577; # of pages: 8
SubjectCarbon; Catalysts; Electrolytic reduction; Ethylene; Ethylene glycol; Filtration; Fuel cells; Organic solvents; Particle size; Platinum alloys; Polyelectrolytes; Polyols; Proton exchange membrane fuel cells (PEMFC); Reduction; Synthesis (chemical); Electrocatalytic properties; Electrochemical active surface areas; Electrochemical characterizations; Electrochemical measurements; Homogeneous distribution; Large scale productions; Oxygen reduction reaction; Physicochemical property; Catalyst activity
AbstractHighly dispersed 50 wt% Pt nanoparticles supported on carbon were successfully synthesized via a simple modified polyol method using different solvent volume ratios (ethylene glycol/water). The control of water proportion is found to have an important effect on the physicochemical properties of the in-house synthesized Pt/C catalysts. The structural and electrochemical characterizations reveal that the addition of water not only favors the homogeneous distribution of Pt particles with reduced particle size but also improves the electrocatalytic properties. In particular, at an optimum volume ratio of ethylene glycol to water of 45 : 23 among all studied ratios, the TEM images indicate that the as-synthesized Pt/C catalyst has a minimum particle size of 2.2 ± 0.5 nm, which is close to that of the commercial 46.6 wt% Pt/TKK catalyst, while the electrochemical measurements disclose electrochemical active surface areas and oxygen reduction reaction activity comparable to those of the commercial 46.6 wt% Pt/TKK catalyst. The simplicity of the synthesis process associated with the ease of the filtering step due to the addition of water has significant implications for its practical application in large scale production of Pt/C catalysts for polymer electrolyte membrane fuel cells.
Publication date
PublisherRoyal Society of Chemistry
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment
Peer reviewedYes
NPARC number21277021
Export citationExport as RIS
Report a correctionReport a correction
Record identifier5631f9d6-307c-42e3-a1de-3b34d68180ea
Record created2015-11-10
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)