Core-shell TiO2@C: towards alternative supports as replacement for high surface area carbon for PEMFC catalysts

被引：40
|
作者：
Zana, Alessandro [1 ]
Ruediger, Celine [2 ]
Kunze-Liebhaeuser, Julia [2 ]
Granozzi, Gaetano [3 ]
Reeler, Nini E. A. [1 ,5 ]
Vosch, Tom [1 ]
Kirkensgaard, Jacob J. K. [4 ]
Arenz, Matthias [1 ]
机构：
[1] Univ Copenhagen, Dept Chem, Nanosci Ctr, DK-2100 Copenhagen O, Denmark
[2] Tech Univ Munich, Phys Dept E19, D-85747 Garching, Germany
[3] Dept Chem Sci, I-35131 Padua, Italy
[4] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen O, Denmark
[5] Sino Danish Ctr Educ & Res SDC, DK-8000 Aarhus, Denmark
来源：
ELECTROCHIMICA ACTA | 2014年 / 139卷
关键词：
proton conducting membrane electrolyte; fuel cells; electrocatalysts; catalyst support materials; ELECTROLYTE FUEL-CELLS; IL-TEM; PLATINUM; MEMBRANE; MODEL; ELECTROCATALYSTS; DEGRADATION; CORROSION; CHALLENGES; NANOTUBES;
D O I：
10.1016/j.electacta.2014.07.002
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this work, corrosion resistant TiO2@C powder was tested as possible alternative to standard carbon black supports for polymer electrolyte membrane fuel cells. We separately prepared a stock solution of well-defined Pt nanoparticles and different support materials, and thereafter supported the NPs on the respective supports. As result we obtained high Pt dispersion on TiO2@C supports comparable to conventional high surface area Pt/C catalysts. Accelerated stress tests were carried out in accordance with the Fuel Cell Commercialization Conference of Japan recommendations. The tests demonstrated improved corrosion resistance of Pt/TiO2@C (as compared to Pt/C) when probing start/stop or mixed load cycle and start/stop conditions, whereas similar stability was observed when probing load cycle conditions only. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：21 / 28
页数：8
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