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High electrocatalytic activity of carbon-supported nickel hydroxide-doped platinum nanocatalysts for BH 4 − electrooxidation
Ionics ( IF 2.4 ) Pub Date : 2020-06-13 , DOI: 10.1007/s11581-020-03640-3
Lanhua Yi , Rui Wang , Junjie Fei , Yonglan Ding , Xianyou Wang , Yebo Lu

In this paper, carbon-supported nickel hydroxide-doped platinum (Pt/Ni(OH)2/C) nanocatalysts are synthesized by a two-step method, and the morphology and structure of Pt/Ni(OH)2/C are studied by transmission electron microscope and X-ray diffraction analysis. The electrocatalytic performance of the Pt/Ni(OH)2/C for borohydride oxidation reaction (BOR) is studied by using cyclic voltammetry, chronoamperometry, chronopotentiometry, and rotating disc electrode voltammetry. The Pt/Ni(OH)2/C catalysts show much better catalytic performance than Pt/C, and Pt(50)/Ni(OH)2(50)/C exhibits the best catalytic performance among all as-prepared Pt/Ni(OH)2/C catalysts. Moreover, the electron transfer number (n) related to BOR is evaluated, and n of 3.5 is achieved on Pt(50)/Ni(OH)2(50)/C electrode.



中文翻译:

碳负载氢氧化镍掺杂的铂纳米催化剂对BH 4-的高电催化活性

本文采用两步法合成了碳负载的氢氧化镍掺杂铂(Pt / Ni(OH)2 / C)纳米催化剂,研究了Pt / Ni(OH)2 / C的形貌和结构。通过透射电子显微镜和X射线衍射分析。通过循环伏安法,计时电流法,计时电位法和旋转盘电极伏安法研究了Pt / Ni(OH)2 / C对硼氢化物氧化反应(BOR)的电催化性能。Pt / Ni(OH)2 / C催化剂显示出比Pt / C更好的催化性能,Pt (50) / Ni(OH)2(50) / C在所有制备的Pt / Ni中表现出最好的催化性能(OH)2/ C催化剂。此外,评估与BOR相关的电子转移数(n),并且在Pt (50) / Ni(OH)2(50) / C电极上获得n为3.5 。

更新日期:2020-06-13
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