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Pt-W-Ru-Se簇合物用于DMFC氧還原性能的研究
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國家自然科學(xué)基金(20476067)；山西省自然科學(xué)基金(20041021)


Investigation on Oxygen Reduction of Pt-W-Ru-Se Cluster Used for Direct Methanol Fuel Cells
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    摘要:

    用低溫合成法制備出不同Pt摻雜量的Pt-W-Ru-Se催化劑，應(yīng)用旋轉(zhuǎn)圓盤電極電位掃描法測試其對氧還原反應(yīng)的催化作用，采用XRD、EDS、XPS技術(shù)表征結(jié)構(gòu)及表面組成。結(jié)果表明，Pt能夠顯著增強W-Ru-Se對氧還原反應(yīng)的催化活性，尤其以含5%Pt(質(zhì)量分?jǐn)?shù), 下同)的Pt-W-Ru-Se催化劑最為明顯，在0.5 mol·L-1 H2SO4中其對氧還原反應(yīng)的電催化活性超過了W-Ru-Se和Pt；甲醇存在時，其穩(wěn)定性和抗甲醇性也都超過了Pt

    Abstract:

    Pt-W-Ru-Se catalysts with different Pt contents were fabricated by low-temperature synthesis and their catalysis effect on the oxygen reduction reaction was tested by the rotating-disk-electrode potential sweep method. The microstructure and surface composition of the obtained catalysts were characterized by XRD, EDS and XPS. Results show that Pt can greatly enhance the catalysis activity of W-Ru-Se to oxygen reduction. In particular, Pt-W-Ru-Se with 5% Pt (mass fraction, similarly hereinafter) is the most obvious one, whose catalysis activity to oxygen reduction is superior to that of W-Ru-Se and Pt in 0.5 mol·L-1 H2SO4. Its stability and resistance-methanol is better than that of Pt when there is methanol

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牛秀紅,劉世斌. Pt-W-Ru-Se簇合物用于DMFC氧還原性能的研究[J].稀有金屬材料與工程,2010,39(4):647~651.[Niu Xiuhong, Liu Shibin. Investigation on Oxygen Reduction of Pt-W-Ru-Se Cluster Used for Direct Methanol Fuel Cells[J]. Rare Metal Materials and Engineering,2010,39(4):647~651.]
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  • 收稿日期:2009-04-23
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