Oxygen electroreduction in propylene carbonate solutions

被引：7
作者：
Tripachev, O. V. [1 ]
Maleeva, E. A. [1 ]
Tarasevich, M. R. [1 ]
机构：
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2015年 / 51卷 / 02期
关键词：
propylene carbonate; gold; carbon; platinum; electrocatalysis of oxygen reduction reaction; cations Li+; Na+; K+; passivation; REDUCTION REACTION; CATALYTIC-ACTIVITY; ELECTROCHEMISTRY; TRENDS;
D O I：
10.1134/S1023193515020147
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The reaction of oxygen electroreduction is studied on various catalytically active materials: compact and disperse platinum, gold, and carbon in a nonaqueous solvent (propylene carbonate). In aqueous media at medium and low pH, the platinum activity is known to far exceed the activities of gold and carbon due to the high adsorption properties of platinum. It is shown that in the nonaqueous solvent medium, in the high current region, platinum demonstrates the activity lower as compared with Au and C. This is associated with the combined effect of the surface passivation by the products of solvent reaction with oxygen reduction products and the surface blockage with a film formed by oxygen-containing compounds of alkali metals.
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收藏
页码：103 / 111
页数：9
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