A series of non-precious metal catalysts for oxygen reduction reaction (ORR) in PEMFCs are prepared by pyrolysis of different precursors at 800 °C under an Ar atmosphere. These precursors are 3d transition metal triethylenetetramine chelates supported on carbon (MTETA/C, M = Fe, Co, Ni, Cu, Zn and Mn). Results by XRD and TEM indicate that the catalyst transforms to a carbon structure embedded with metal or metallic carbon after pyrolysis. Electrochemical measurements are achieved by rotating disk electrode and cycle voltammograms in 0.5 M H₂SO₄ solution, as well as single cell tests. The catalytic activities decreases as Fe > Co > Zn > Mn > metal-free >>Cu > > Ni. This suggests that the transition metal plays an important role in formation of the active sites. Single cell tests show that they have some potential applications as the cathode catalysts. Some potential catalytic active sites are also propounded.

一系列用于PEMFC中氧还原反应（ORR）非贵重金属催化剂是通过在800℃下不同前体的热解在Ar气氛下制备。这些前体是负载在碳上的3d过渡金属三亚乙基四胺螯合物（MTETA / C，M = Fe，Co，Ni，Cu，Zn和Mn）。XRD和TEM的结果表明，热解后催化剂转变为嵌入金属或金属碳的碳结构。电化学测定是通过在0.5旋转圆盘电极和循环伏安MH实现₂ SO ₄溶液，以及单电池试验。的催化活性降低的Fe>钴>锌>锰>无金属>>铜>>的Ni。这表明，过渡金属起着形成活性位点的重要作用。单细胞试验表明，他们有一些潜在的应用作为阴极催化剂。一些潜在的催化活性位点也被提出来。