Platinum-cobalt catalysts for the oxygen reduction reaction in high temperature proton exchange membrane fuel cells - Long term behavior under ex-situ and in-situ conditions

被引：43

作者：

Schenk, Alexander ^{[1
]}

Grimmer, Christoph ^{[1
]}

Perchthaler, Markus ^{[1
,2
]}

Weinberger, Stephan ^{[1
]}

Pichler, Birgit ^{[1
]}

Heinzl, Christoph ^{[3
]}

Scheu, Christina ^{[3
]}

Mautner, Franz-Andreas ^{[4
]}

Bitschnau, Brigitte ^{[4
]}

Hacker, Viktor ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Chem Engn & Environm Technol, Fuel Cell Syst Grp, A-8010 Graz, Austria

[2] Elcomax GmbH, D-81737 Munich, Germany

[3] Univ Munich, Dept Chem, D-81377 Munich, Germany

[4] Graz Univ Technol, Inst Phys & Theoret Chem, Struct Sci Grp, A-8010 Graz, Austria

来源：

JOURNAL OF POWER SOURCES | 2014年 / 266卷

关键词：

PEMFCs; High temperature; ORR catalysts; Pt catalysts; Long term operation; Stability; SUPERIOR ELECTROCATALYTIC ACTIVITY; SURFACE-COMPOSITION; PT-SKIN; CO; ALLOY; STABILITY; ACID; NI; ENHANCEMENT; PERFORMANCE;

D O I：

10.1016/j.jpowsour.2014.05.023

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：

Platinum cobalt catalysts (Pt-Co) have attracted much interest as cathode catalysts for proton exchange membrane fuel cells (PEMFCs) due to their high activity toward oxygen reduction reaction (ORR). Many of the reported catalysts show outstanding performance in ex-situ experiments. However, the laborious synthesis protocols of these Pt-Co catalysts disable an efficient and economic production of membrane electrode assemblies (MEAs). We present an economic, flexible and continuous Pt-M/C catalyst preparation method as part of a large scale membrane electrode assembly manufacturing. In comparison, the as-prepared Pt-Co/C based high temperature (HT)-PEM MEA showed an equal performance to a commercially available HT-PEM MEA during 600 h of operation under constant load, although the commercial one had a significantly higher Pt loading at the cathode. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：313 / 322

页数：10

共 56 条

[41] Improved oxygen reduction activity on Pt3Ni(111) via increased surface site availability [J].