摘要
氧在Ｐｔ－Ｆｅ－Ｃｏ／Ｃ合金催化剂上的还原魏子栋，郭鹤桐，唐致远（山东工业大学化工系，济南２５００１４）（天津大学应用化学系，天津３０００７２）关键词燃料电池，铂－铁－钴催化剂，电化学催化，氧还原尽管评价燃料电池运行效率的指标很多，但其中最重要的是阴...
he cathodic reduction of oxygen is studied on Pt--Fe-Co alloy distributed in the form of small particles on carbon black with a high specific area. Comparing with Pt/C catalyst, the catalytic activity and stability of Pt--Fe--Co/C catalysts are greatly enhanced for O, reduction.The cathodic polarization of O, reduction on Pt--Fe--Co/C is 20 to 40 mV below the conventional catalyst Pt/C. The retention of specific surfacearea of Pt on Pt-Fe--Co/C is 20% higher than on Pt/C after an accelerated aging test. The anchoring of Pt on carbon surface by Fe and Co is thought to play a main role for the improvement of Pt--Fe--Co/C performance.
关键词
燃料电池
铂
铁
催化剂
氧还原
fuel cells, Pt--Fe-Co catalyst, electrocatalysis, oxygen reducton
