121st General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ELEC.P-634
Subject Enhanced performance with low Pt loading on nitrogen and iron doped porous carbon for oxygen reduction reaction
Authors SUK-HUI KWON, Seok Hyeon Yun, Kyung-Won Park*
Department of Chemical Engineering, Soongsil University, Korea
Abstract Proton exchange membrane fuel cells(PEMFCs) have the problem of decreasing efficiency due to the high activity losses in the cathode. To compensate for this problem, the use of a catalyst is required, mostly platinum catalyst. However, due to the limited reserves and high prices of platinum, research is underway to minimize its use. To reduce the content of platinum in the catalyst, nitrogen and iron doped carbon structures which is synthesised porously were used as a support for platinum catalyst. It is well known that the properties of the support for loading platinum catalyst have a dominant influence on the nucleation and growth of platinum nanoparticles. In addition, interaction between platinum catalyst and support can maximize catalytic activity in platinum nanoparticles. The platinum content was adjusted to 5, 10, 20, and 30 wt% to confirm the catalytic interaction of the support with platinum nanoparticles. It was confirmed that low platinum content also produces high activity. Structural analysis was carried out through X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy(XPS) analysis, etc. and characteristic of oxygen reduction response was evaluated through cyclic voltammogram, linear sweep voltammogram.
E-mail tnrgml317@naver.com