CoTPP-Pt/C作直接甲醇燃料电池阴极催化剂

The Performance of CoTPP-Pt/C as Cathodic Catalyst in Direct Methanol Fuel cell

制备了炭载四苯基钴卟啉(CoTPP)和Pt(CoTPP-Pt/C)复合催化剂,研究了炭载四苯基铁卟啉对氧还原的电催活性。电化学研究发现,CoTPP-Pt/C催化剂对氧还原有很高的电催化活性。CoTPP-Pt/C催化剂对氧还原的极限电流密度比Pt/C催化剂高30%左右,但抗甲醇的能力未改善。

Direct methanol fuel cell （DMFC） has attracted more and more attention due to its many advantages. However, DMFC has some main problems that prevent its practical application.. One of the problems of DMFC is the low electrocatalytic activity of its cathodic Pt catalyst for the oxygen reduction. The present paper covers carbon-supported tetra-phenyl cobalt porphyrln （CoTPP） and Pt （CoTPP-Pt/C） catalysts prepared. The electrochemical measurements demonstrate that the electrocatalytic activity of CoTPP-Pt/C catalyst for the oxygen reduction is higher than that of carbon supported Pt （Pt/C） catalyst. The current density of the oxygen reduction at CoTPP-Pt/C catalyst is about 30% higher than that of Pt/C catalyst. However, the methanol resistant ability of the CoTPP-Pt/C catalyst is similar to that of Pt/C catalyst. Thus, it should be improved.