A quantitative research on S- and SO2-poisoning Pt/Vulcan carbon fuel cell catalyst
| Data(s) |
15/03/2012
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|---|---|
| Resumo |
A quantitative research on S and SO2 poisoning Pt/Vulcan carbon (Pt/VC) catalysts for fuel cells was conducted by the three-electrode method. Pt/VC electrodes were contaminated by submersion in a SO2- containing solution made up of 0.2 mM Na2SO3 and 0.5 M H2SO4 for different periods of time, and held at 0.05 V (vs. RHE) in 0.5 M H2SO4 solutions in order to gain zero-valence sulfur (S0) poisoned electrodes. The sulfur coverage of Pt was determined from the total charge consumed as the sulfur was oxidized from S0 at 0.05 V (vs. RHE) to sulfate at >1.1 V (vs. RHE). The summation of initial coverage of S0 (S) and coverage of H (H) are approximately equal to 1 (H + S = 1) when 0.5 |
| Formato |
application/pdf |
| Identificador |
http://dx.doi.org/10.1016/j.electacta.2012.01.105 http://pure.qub.ac.uk/ws/files/958747/Electrochimica%20Acta%202012%2067%2050-54.pdf |
| Idioma(s) |
eng |
| Direitos |
info:eu-repo/semantics/restrictedAccess |
| Fonte |
Xie , F , Shao , Z G , Zhang , G , Zhai , J , Lu , W , Qin , X , Lin , W & Yi , B 2012 , ' A quantitative research on S- and SO2-poisoning Pt/Vulcan carbon fuel cell catalyst ' Electrochimica Acta , vol 67 , pp. 50-54 . DOI: 10.1016/j.electacta.2012.01.105 |
| Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/1600/1603 #Electrochemistry #/dk/atira/pure/subjectarea/asjc/1500 #Chemical Engineering(all) |
| Tipo |
article |
