Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

被引：17

作者：

Jeevagan, Arockiam John ^{[1
]}

Gunji, Takao ^{[1
]}

Ando, Fuma ^{[1
]}

Tanabe, Toyokazu ^{[1
]}

Kaneko, Shingo ^{[2
]}

Matsumoto, Futoshi ^{[1
]}

机构：

[1] Kanagawa Univ, Dept Mat & Life Chem, Kanagawa Ku, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 2218686, Japan

[2] Kanagawa Univ, Inst Engn Res, Kanagawa Ku, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 2218686, Japan

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2016年 / 46卷 / 07期

关键词：

Electrocatalysis; Oxygen reduction reaction; Ordered intermetallic phase; Alkaline media; FUEL-CELLS; PTPB NANOPARTICLES; FORMIC-ACID; STABILITY; OXIDATION; ELECTRODE; GRAPHENE; ELECTROOXIDATION; PALLADIUM; MEDIA;

D O I：

10.1007/s10800-016-0968-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Enhancement of the oxygen reduction reaction (ORR) was examined with Pd3Pb ordered intermetallic nanoparticles (NPs) supported on titania (Pd3Pb/TiO2). The Pd3Pb/TiO2 catalyst was synthesized by a conventional wet chemical method with Pd and Pb ion precursors, a reducing agent and TiO2 powder under ambient temperature. X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy measurements indicated the formation of the ordered intermetallic phase of Pd3Pb in the NP form on the TiO2 surface. Electrochemical measurements showed that the Pd3Pb/TiO2 catalyst markedly enhanced the ORR in an alkaline environment due to the unique surface of Pd3Pb NPs and the strong interaction between Pd3Pb and TiO2 compared with TiO2-supported Pd, Pt, and PtPb NPs. The onset potential of Pd3Pb/TiO2 was shifted toward a higher potential by 110-150 mV compared with Pd/TiO2, PtPb/TiO2, and Pt/TiO2. [GRAPHICS] .

引用

页码：745 / 753

页数：9

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