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

作　　者：王彦恩[1] 唐亚文[1] 陈煜[1] 周益明[1] 邢巍[2] 高颖[3] 陆天虹[1] 

机构地区：[1]南京师范大学化学与环境科学学院,江苏南京210097 [2]中国科学院长春应用化学研究所,长春130022 [3]哈尔滨师范大学理化学院化学系,哈尔滨150080

出　　处：《南京师大学报（自然科学版）》2006年第4期61-65,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：科技部"973"基金(G2000026408);"863"基金(2003AA517060);国家自然科学基金(20373068;20433060;20573057;20573029);江苏省自然科学基金(BK2006224);江苏省高校自然科学基金(05KJB150061)资助项目.

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.The Pt- Fe/C and Pt/C catalysts were prepared with predeposited method. It was found that the clectrocatalytic 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.

关 键 词：直接甲醇燃料电池 炭载Pt—Fe催化剂 预沉淀法 

分 类 号：O646[理学—物理化学]