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Pt摻雜W-Ru-Se納米簇合物電催化氧還原性能
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國家自然科學(xué)基金資助(20676088)；國家高技術(shù)研究發(fā)展規(guī)劃(“863”計劃)(2006AA05Z139)


Electrochemical O2 Reduction Performance of W-Ru-Se Nano-clusters Doped with Pt
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    摘要:

    以低溫合成法制備了Pt摻雜的W-Ru-Se納米簇合物，并應(yīng)用旋轉(zhuǎn)圓盤電極線性電位掃描法測試其對氧還原反應(yīng)的電催化性能，采用XRD、EDS、XPS表征結(jié)構(gòu)及表面組成。結(jié)果表明，摻雜Pt后W-Ru-Se對氧還原反應(yīng)活性明顯提高，尤其以摻雜5%Pt(質(zhì)量分?jǐn)?shù), 下同)的W-Ru-Se活性提高最為顯著，在0.5 mol?L-1 H2SO4中Pt-W-Ru-Se (5%Pt)的氧還原起始電位為0.25 V，峰電流密度為310 mA?mg-1，是W-Ru-Se峰電流密度的2.2倍，活性接近于Pt/C。電解液中存在甲醇時，Pt-W-Ru-Se (5%Pt)的活性和抗甲醇性優(yōu)于Pt/C

    Abstract:

    The Mo-Ru-Se nano-clusters doped with Pt were synthesized by a low temperature method and characterized by XRD, EDS and XPS. The electro-catalytic performance to oxygen reduction was studied for the Pt-W-Ru-Se catalysts in acid electrolytes with or without methanol by a linear sweep voltammetry (LSV) method. The results show that the activity of W-Ru-Se doped with Pt on oxygen reduction is markedly increased compared with that of platinum-free W-Ru-Se under the same reaction condition. The optimum Pt loading is about 5 %. In 0.5 mol?L-1 H2SO4, the initial potential of oxygen reduction of Pt-W-Ru-Se (5% Pt) is 0.25 V, the peak current density is 310 mA·mg-1, approaching 2.2 times that of W-Ru-Se and the activity is close to that of Pt/C. In addition, the activity and methanol-resistance of Pt-W-Ru-Se (5% Pt) is better than that of Pt/C in 0.5 mol?L-1 H2SO4 with methanol

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段東紅,劉世斌,牛秀紅,張忠林,郝曉剛,李一兵,孫彥平. Pt摻雜W-Ru-Se納米簇合物電催化氧還原性能[J].稀有金屬材料與工程,2011,40(7):1282~1286.[Duan Donghong, Liu Shibin, Niu Xiuhong, Zhang Zhonglin, Hao Xiaogang, Li Yibing, Sun Yanping. Electrochemical O2 Reduction Performance of W-Ru-Se Nano-clusters Doped with Pt[J]. Rare Metal Materials and Engineering,2011,40(7):1282~1286.]
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  • 收稿日期:2010-07-11
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