Optimization of PtIr electrocatalyst for PEM URFC

被引：87

作者：

Yim, SD ^{[1
]}

Park, GG ^{[1
]}

Sohn, YJ ^{[1
]}

Lee, WY ^{[1
]}

Yoon, YG ^{[1
]}

Yang, TH ^{[1
]}

Um, S ^{[1
]}

Yu, SP ^{[1
]}

Kim, CS ^{[1
]}

机构：

[1] Korea Inst Energy Res, Fuel Cell Res Ctr, Taejon 305343, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2005年 / 30卷 / 12期

关键词：

PEMFC; regenerative fuel cell; bifunctional electrocatalyst; PtIr;

D O I：

10.1016/j.ijhydene.2005.04.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the fabrication of high-efficient bifunctional electrocatalyst of oxygen electrode, several electrocatalysts were prepared and tested on the URFC performance including both fuel cell and water electrolysis in a single cell URFC system. The catalysts revealed fuel cell performance in the order of Pt black > PtIr > PtRuOx > PtRu similar to PtRuIr > PtIrOx and water electrolysis performance in the order of PtIr similar to PtIrOx > PtRu > PtRuIr > PtRuOx similar to Pt black. Considering both results PtIr showed the best URFC performance. With increasing Ir or IrOx composition from 0 to 50 wt% in PtIr and PtIrOx catalysts the fuel cell performance decreased while the water electrolysis performance significantly improved. Hence, the PtIr catalyst including I wt% Ir revealed the highest URFC efficiency. The catalyst content for the URFC system was optimized as 1.0 mg/cm(2) of Pt black as hydrogen electrode and 2.0 mg/cm(2) of PtIr (99:1) as oxygen electrode. (c) 2005 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1345 / 1350

页数：6

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