PLATINUM-FREE CATALYSTS FOR ALKALINE POLYMER ELECTROLYTE FUEL CELLS

被引：0
|
作者：
da Silva, E. L. [1 ]
Correa, P. S. [1 ]
de Oliveira, F. [1 ]
El Sheikh, A. [1 ]
Radtke, C. [2 ]
Malfatti, C. F. [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Dept Met PPGEM, Lab Pesquisa Corrosao LAPEC, Av Bento Goncalves 9500,Predio 75, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Inst Quim, BR-90046900 Porto Alegre, RS, Brazil
来源：
20TH BRAZILIAN CONFERENCE ON MATERIALS SCIENCE AND ENGINEERING | 2014年 / 775-776卷
关键词：
Ni/C; Alkaline Fuel Cell; ethanol; synthesis methods;
D O I：
10.4028/www.scientific.net/MSF.755-776.512
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Platinum is known as the best catalyst for fuel cells reactions, because it presents the best catalytic activity and stability, mainly in acidic media. However, due to the high cost of platinum and its lower availability, the development of platinum-free catalysts for Alkaline Polymer Electrolyte Fuel Cells has been proposed. This work aims to compare catalysts characteristics obtained from two different synthesis methods. Ni catalysts were obtained by the impregnation/reduction method and by electroless deposition. The morphology of the electrocatalysts obtained were characterized by SEM-EDS and the electrochemical behavior was evaluated by Cyclic Voltammetry. And the composition of the catalysts obtained by the impregnation/reduction method was analyzed by Rutherford Backscaftering Spectroscopy. The results obtained showed that the catalyst elaborated by the impregnation/reduction method developed higher current densities values than the catalyst elaborated by electroless deposition.
引用
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页码：512 / +
页数：2
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