双金属片
纳米材料基催化剂
催化作用
质子交换膜燃料电池
电化学
透射电子显微镜
材料科学
炭黑
核化学
燃料电池
化学
无机化学
化学工程
电极
纳米技术
物理化学
有机化学
天然橡胶
复合材料
工程类
作者
S.S. Shapovalov,N. A. Mayorova,Alexander D. Modestov,A. A. Shiryaev,А. В. Егоров,В. А. Гринберг
出处
期刊:Catalysts
[MDPI AG]
日期:2022-02-24
卷期号:12 (3): 255-255
被引量:7
标识
DOI:10.3390/catal12030255
摘要
Nanosized bimetallic PtMo, PtFe and trimetallic PtMoSn catalysts deposited on highly dispersed carbon black Vulcan XC-72 were synthesized from the cluster complex compounds PtCl(P(C6H5)3)(C3H2N2(CH3)2)Mo(C5H4CH3)(CO)3, Pt(P(C6H5)3)(C3N2H2(CH3)2)Fe(CO)3(COC6H5C2C6H5), and PtCl(P(C6H5)3)(C3N2H2(CH3)2)C5H4CH3Mo(CO)3SnCl2, respectively. Structural characteristics of these catalysts were studied using X-ray diffraction (XRD), microprobe energy dispersive spectroscopy (EDX), and transmission electron microscopy (TEM). The synthesized catalysts were tested in aqueous 0.5 M H2SO4 in a three-electrode electrochemical cells and in single fuel cells. Electrocatalytic activity of PtMo/C and PtFe/C in the oxygen reduction reaction (ORR) and the activity of PtMoSn/C in electrochemical oxidation of ethanol were evaluated. It was shown that specific characteristics of the synthesized catalysts are 1.5–2 times higher than those of a commercial Pt(20%)/C catalyst. The results of experiments indicate that PtFe/C, PtMo/C, and PtMoSn/C catalysts prepared from the corresponding complex precursors can be regarded as promising candidates for application in fuel cells due to their high specific activity.
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