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预沉淀法制备直接甲醇燃料电池的Pt-Fe/C阴极催化剂
Cathodic Pt-Fe/C Catalyst in Direct Methanol Fuel Cell Prepared with Predeposited Method
【摘要】 用预沉淀法制备了炭载Pt-Fe(Pt-Fe/C)和炭载Pt(Pt/C)催化剂.发现Pt-Fe/C催化剂对氧还原的电催化活性比Pt/C催化剂高,但对甲醇氧化的电催化活性比Pt/C催化剂差.即使在电解液中有甲醇存在时,Pt-Fe/C催化剂对氧还原的电催化活性仍比Pt/C催化剂高.所以,Pt-Fe/C催化剂适合于用作直接甲醇燃料电池(DMFC)中的阴极催化剂.
【Abstract】 The Pt-Fe/C and Pt/C catalysts were prepared with predeposited method. It was found that the electrocatalytic activity of the Pt-Fe/C catalyst for the oxygen reduction is higher than that of the Pt/C catalyst. However, the electrocatalytic activity of the Pt-Fe/C catalyst for the methanol oxidation is lower than that of the Pt/C catalyst. Even in the presence of methanol in the electrolyte solution, the electrocatalytic activity of the Pt-Fe/C catalyst for the oxygen reduction is still higher than that of the Pt/C catalyst. Therefore, the Pt-Fe/C catalyst is suitable to be used as the cathodic catalyst in DMFC.
【Key words】 direct methanol fuel cell; carbon supported Pt-Fe catalyst; predeposited method;
- 【文献出处】 南京师大学报(自然科学版) ,Journal of Nanjing Normal University(Natural Science) , 编辑部邮箱 ,2006年04期
- 【分类号】TM911.4
- 【被引频次】1
- 【下载频次】296