A novel platinum-free electrocatalyst CoTETA/C for oxygen reduction reaction (ORR) was prepared from pyrolysis of carbon-supported cobalt triethylenetetramine chelate under an inert atmosphere. X-ray diffraction (XRD) measurement showed that nanometallic face-centered cubic (fcc) crystalline α-Co phase embedded in graphitic carbon was present on the pore surface of this catalyst. Cyclic voltammogram experiment showed that the ORR peak potential appears at 710 mV (vs. NHE) in oxygen-saturated acidic media (0.5 M H₂SO₄). The Koutecky–Levich analysis indicated that the ORR follows the first-order kinetic reaction and the ORR proceeds via both the two-electron reduction and the four-electron reduction, while the latter is the main process. The actual performance of a single cell with the obtained CoTETA/C electrocatalyst was examined under a hydrogen-oxygen fuel cell system, and the maximal output power density reached 135 mW cm⁻² at 25 °C.

在惰性气氛下，通过碳载三亚乙基四胺钴螯合物的热解，制备了一种新型的无氧还原反应的无铂电催化剂CoTETA / C。X射线衍射（XRD）测量表明，在该催化剂的孔表面上存在嵌入石墨碳中的纳米金属面心立方（fcc）晶体α- Co相。循环伏安图实验表明，在氧气饱和的酸性介质（0.5 MH ₂ SO ₄）中，ORR峰值电势出现在710 mV（相对于NHE））。Koutecky-Levich分析表明，ORR遵循一级动力学反应，ORR既通过两电子还原又通过四电子还原进行，而后者是主要过程。在氢-氧燃料电池系统下检查了具有所获得的CoTETA / C电催化剂的单电池的实际性能，并且在25℃下最大输出功率密度达到135mWcm ^-2。