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首页> 外文期刊>Journal of industrial and engineering chemistry >Effect of transition metals (Ni, Sn and Mo) in Pt5Ru4M alloy ternary electrocatalyst on methanol electro-oxidation
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Effect of transition metals (Ni, Sn and Mo) in Pt5Ru4M alloy ternary electrocatalyst on methanol electro-oxidation

机译：Pt5Ru4M合金三元电催化剂中过渡金属（Ni，Sn和Mo）对甲醇电氧化的影响

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摘要

Pure Pt, PtRu and Pt5Ru4M (M = Ni, Sn and Mo) electrocatalysts were prepared using a NaBH4 reduction method. The alloy formation and particle size of the electrocatalysts were determined by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The formation of crystalline Pt was confirmed regardless of the addition of Ru and transition metals. The average particle size was found to be about 2.5-3.5 nm. The electrochemical properties of the electrocatalysts were analyzed by methanol electro-oxidation and CO stripping in the half cell. The mass activity and specific activity were obtained through these experiments. Methanol electro-oxidation and the specific activity of the PtRuNi electrocatalyst were much higher than that of PtRu electrocatalyst. The specific activity of methanol electro-oxidation based on EAS for the PtRuSn and PtRuMo electrocatalysts was higher than that of the PtRu, although their mass activity of methanol electro-oxidation was lower.
机译：使用NaBH4还原法制备纯Pt，PtRu和Pt5Ru4M（M = Ni，Sn和Mo）电催化剂。分别通过X射线衍射（XRD）和透射电子显微镜（TEM）确定电催化剂的合金形成和粒度。无论Ru和过渡金属的添加如何，都确认了晶体Pt的形成。发现平均粒度为约2.5-3.5nm。在半电池中通过甲醇电氧化和CO汽提分析了电催化剂的电化学性质。通过这些实验获得了质量活性和比活性。 PtRuNi电催化剂的甲醇电氧化和比活度比PtRu电催化剂高得多。尽管基于EAS的甲醇电氧化的质量活性较低，但是基于EAS的甲醇对PtRuSn和PtRuMo电催化剂的比活性高于PtRu。

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