THE INFLUENCE OF PT ON THE ELECTROOXIDATION BEHAVIOR OF CARBON IN PHOSPHORIC-ACID

被引：88
|
作者：
PASSALACQUA, E
ANTONUCCI, PL
VIVALDI, M
PATTI, A
ANTONUCCI, V
GIORDANO, N
KINOSHITA, K
机构：
[1] UNIV REGGIO CALABRIA,FAC ENGN,I-89100 REGGIO CALABRIA,ITALY
[2] LAWRENCE BERKELEY LAB,DIV APPL SCI,BERKELEY,CA 94720
来源：
ELECTROCHIMICA ACTA | 1992年 / 37卷 / 15期
关键词：
CARBON CORROSION; PT DISSOLUTION; FUEL CELLS; CYCLIC VOLTAMMETRY; PHOSPHORIC ACID;
D O I：
10.1016/0013-4686(92)85199-U
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrooxidation behaviour of Pt/C catalysts for phosphoric acid fuel cells (PAFC) has been investigated by potentiostatic tests in the potential range 0.6 divided-by 1.0 V (rhe). Results indicate that the corrosion rate increases with an increase in Pt content, and is most noticeable at 0.6 V. At higher potentials anodic dissolution of Pt takes place, thus no metal is available to catalyze the corrosion of carbon. It is concluded that a definite influence of the presence of the supported metal on the extent of carbon corrosion under practical conditions does exist, but the understanding of mechanisms involved in the Pt-promoted carbon corrosion requires further studies.
引用
收藏
页码：2725 / 2730
页数：6
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