Comparison of the structure and methanol electrooxidation ability from irregular PtNi nanocrystals to PtNiRu nanodendrites,CrystEngComm

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Comparison of the structure and methanol electrooxidation ability from irregular PtNi nanocrystals to PtNiRu nanodendrites
CrystEngComm ( IF 2.6 ) Pub Date : 2020/01/07 , DOI: 10.1039/c9ce01840a
Zirong Li _{1,

2,

3,

4,

5} , Zhongyue Guan _{4,

5,

6,

7} , Yuting Chang _{4,

5,

6,

7} , Die Hu _{4,

5,

6,

7} , Baokang Jin _{1,

2,

3,

4} , Lei Bai _{4,

5,

6,

7}

Affiliation

In this work, platinum–nickel–ruthenium (PtNiRu) nanocrystals with different amounts of Ru were synthesized by a one-pot solvothermal method. In the absence and presence of ruthenium trichloride, the evolution of the structure and composition of the obtained Pt alloys was clearly observed. In comparison with PtNi irregular nanocrystals, PtNiRu nanospheres and nanodendrites were obtained under the same reaction conditions. The structure, composition and the formation pathway of the PtNiRu nanodendrites were investigated in detail. Finally, the catalytic results from the methanol oxidation suggested that the mass activity and the area specific activity of the PtNiRu nanodendrites were 3.5 and 3.1-fold higher than those of commercial Pt/C, as well as having better durability, which was due to the porous structure and synergistic effect of Ni/Ru. It is expected that the present study could provide a new approach for designing alloys based on Pt modified with low amounts of Ru for energy conversion applications.

中文翻译：

从不规则PtNi纳米晶体到PtNiRu纳米枝晶的结构和甲醇电氧化能力的比较

在这项工作中，通过一锅溶剂热法合成了钌含量不同的铂-镍-钌（PtNiRu）纳米晶体。在不存在和存在三氯化钌的情况下，清楚地观察到所获得的Pt合金的结构和组成的演变。与PtNi不规则纳米晶体相比，在相同的反应条件下获得了PtNiRu纳米球和纳米树枝晶。详细研究了PtNiRu纳米枝晶的结构，组成和形成途径。最后，甲醇氧化的催化结果表明，PtNiRu纳米枝晶的质量活性和面积比活性比市售Pt / C分别高3.5倍和3.1倍，并且具有更好的耐久性，这是由于Ni / Ru的多孔结构及其协同作用

更新日期：2020-02-24

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