PtRu/Ti anodes with varying Pt ratio: Ru ratio prepared by electrodeposition for the direct methanol fuel cell.
PtRu/Ti anodes with varying Pt ratio Ru ratio were prepared by electrodeposition of a thin PtRu catalyst layer onto Ti mesh for a direct methanol fuel cell (DMFC). The morphology and structure of the catalyst layers were analyzed by SEM, EDX and XRD. The catalyst coating layer shows an alloy character. The relative activities of the PtRu/Ti electrodes were assessed and compared in half cell and single DMFC experiments. The results show that these electrodes are very active for the methanol oxidation and that the optimum Ru surface coverage was ca. 9 at.% for DMFC operating at 20 degrees C and 11 at.% at 60 degrees C. The PtRu/Ti anode shows a performance comparable to that of the conventional carbon-based anode in a DMFC operating with 0.25 M or 0.5 M methanol solution and atmosphere oxygen gas at 90 degrees C.
Shao
Zhi-Gang
ZG
School of Chemical Engineering and Advanced Materials, Bedson Building, University of Newcastle upon Tyne, Newcastle upon Tyne, UKNE1 7RU.
Zhu
Fuyun
F
Lin
Wen-Feng
WF
Christensen
Paul A
PA
Zhang
Huamin
H
D011211:Electric Power Supplies; D004566:Electrodes; D004595:Electroplating; D000432:Methanol / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
D010984:Platinum; D012428:Ruthenium; D014025:Titanium; D000432:Methanol