Remarkable Mass Activities for the Oxygen Evolution Reaction at Iridium Oxide Nanocatalysts Dispersed on Tin Oxides for Polymer Electrolyte Membrane Water Electrolysis

被引：41

作者：

Ohno, Hideaki ^{[1
]}

Nohara, Shinji ^{[2
,3
]}

Kakinuma, Katsuyoshi ^{[3
]}

Uchida, Makoto ^{[3
]}

Miyake, Akiko ^{[4
]}

Deki, Shigehito ^{[3
]}

Uchida, Hiroyuki ^{[2
,3
]}

机构：

[1] Univ Yamanashi, Interdisciplinary Grad Sch Med Engn & Agr Sci, Special Doctoral Program Green Energy Convers Sci, Kofu, Yamanashi 4008510, Japan

[2] Univ Yamanashi, Clean Energy Res Ctr, Kofu, Yamanashi 4008510, Japan

[3] Univ Yamanashi, Fuel Cell Nanomat Ctr, Kofu, Yamanashi 4000021, Japan

[4] Kobelco Ecosolut Co Ltd, Nishi Ku, Kobe, Hyogo 6512241, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2017年 / 164卷 / 09期

关键词：

DOPED SNO2 NANOPARTICLES; TEMPERATURE-DEPENDENCE; REDUCTION ACTIVITY; CATALYST; PERFORMANCE; DURABILITY; CATHODES; ACID; SUPPORTS; PEFCS;

D O I：

10.1149/2.1101709jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In order to reduce the amount of noble metal catalysts for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolysis (PEMWE) while maintaining high efficiency, we synthesized new catalysts: IrOx nanoparticles dispersed on Nb-SnO2 and Ta-SnO2 supports with fused-aggregate structures. IrOx nanoparticles with a uniform size of ca. 2 nm were highly dispersed on these supports. The OER activities were evaluated by linear sweep voltammetry (LSV) in 0.1 M HClO4 at 80 degrees C using a channel flow electrode cell. The IrOx/Ta-SnO2 catalysts exhibited an apparent mass activity (MA) of 15 A mgIr(-1) for the OER at 1.5 V vs. RHE, which was 32 times higher than that of a conventional catalyst (mixture of Pt black and IrO2 powders). This suggests a possible reduction of the loading of the noble metal anode catalyst to a level as low as 0.1 mg cm(-2) at a voltage efficiency of 90% at 1 A cm(-2). (C) The Author(s) 2017. Published by ECS.

引用

页码：F944 / F947

页数：4

共 34 条

[1] High temperature water electrolysis in solid oxide cells [J].