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-627
Subject Nitrogen, Iron, and sulfur-doped high crystalline carbons as Pt catalyst supports for oxygen reduction reaction in proton exchange membrane fuel cells
Authors Seok Hyeon Yun, SUK-HUI KWON1, Kyung-Won Park1,*
department of chmeical engineering, Soongsil University, Korea
1Department of Chemical Engineering, Soongsil University, Korea
Abstract Platinum catalysts have been widely used as oxygen reduction catalysts in fuel cells. Platinum catalysts have high activity and stability and good heat resistance. However, since platinum is a precious metal and its value is high, it is an obstacle to commercialization of fuel cells. Also, due to impurities, it tends to be contaminated. In order to overcome these disadvantages, development studies of a support used for a platinum catalyst have been actively advanced recently. Platinum catalysts using nitrogen and sulfur doped carbon supports show better oxygen reduction properties and stability than conventional platinum catalysts but studies of supports doped nitrogen and sulfur is rare. In particular, sulfur and nitrogen-doped non platinum catalyst exhibit good properties not only alkaline conditions but also acidic conditions. When used as a support of a platinum catalyst, The active sites of the support and the active sites of platinum coexist. Because of the dual doping effect, it had higher activity than the conventional platinum catalyst. Based on this, utilizing carbon with high crystallinity, heat treated Fe - Pc, TAA and carbon to produce Fe / N / S - doped carbon and carried platinum. The catalysts were analyzed using X-ray diffraction (XRD), scanning electron microscope (SEM) analysis to analyze structural properties. High oxygen reduction reaction activity and stability were confirmed via cyclic voltammetry (CV) and linear sweep voltammetry (LSV) which are electrochemical analysis.
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