Investigation of a Pt-Fe/C catalyst for oxygen reduction reaction in direct ethanol fuel cells

被引：14
作者：
Luna, A. M. Castro [2 ]
Bonesi, A. [2 ]
Triaca, W. E. [2 ]
Di Blasi, A. [1 ]
Stassi, A. [1 ]
Baglio, V. [1 ]
Antonucci, V. [1 ]
Arico, A. S. [1 ]
机构：
[1] CNR, ITAE, I-98126 Messina, Italy
[2] Natl Univ La Plata, Fac Ciencias Exactas, Dept Quim, INIFTA, RA-1900 La Plata, Argentina
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2010年 / 12卷 / 01期
关键词：
Direct ethanol fuel cells; Oxygen reduction reaction; Ethanol tolerance; Pt-Fe/C catalyst; Pt/C catalyst; Nanoparticles; Energy conversion; PARTICLE-SIZE; ALLOY CATALYSTS; ELECTROCATALYTIC BEHAVIOR; METHANOL; CO; PERFORMANCE; OXIDATION; PLATINUM; TOLERANCE; ELECTRODE;
D O I：
10.1007/s11051-009-9726-7
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Three cathode catalysts (60% Pt/C, 30% Pt/C and 60% Pt-Fe/C), with a particle size of about 2-3 nm, were prepared to investigate the effect of ethanol cross-over on cathode surfaces. All samples were studied in terms of structure and morphology by using X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses. Their electrocatalytic behavior in terms of oxygen reduction reaction (ORR) was investigated and compared using a rotating disk electrode (RDE). The tolerance of cathode catalysts in the presence of ethanol was evaluated. The Pt-Fe/C catalyst showed both higher ORR activity and tolerance to ethanol cross-over than Pt/C catalysts. Moreover, the more promising catalysts were tested in 5 cm 2 DEFC single cells at 60 and 80 degrees C. An improvement in single cell performance was observed in the presence of the Pt-Fe catalyst, due to an enhancement in the oxygen reduction kinetics. The maximum power density was 53 mW cm(-2) at 2 bar rel. cathode pressure and 80 degrees C.
引用
收藏
页码：357 / 365
页数：9
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