Lim, Borami Kim, Joung Woon Hwang, Seung Jun Yoo, Sung Jong Cho, Eun Ae Lim, Tae-Hoon Kim, Soo-Kil 2024-01-20T19:02:42Z 2024-01-20T19:02:42Z 2022-01-10 2010-06-20 0253-2964 https://pubs.kist.re.kr/handle/201004/131321 A 20 wt % Pt/C is fabricated and characterized for use as the cathode catalyst in a polymer electrolyte membrane fuel cell (PEMFC). By using the polyol method, the Fabrication process is optimized by modifying the carbon addition sequence and precursor mixing conditions. The crystallographic structure, particle size, dispersion, and activity toward oxygen reduction of the as-prepared catalysts are compared with those of commercial Pt/C catalysts. The most effective catalyst is obtained by ultrasonic treatment of ethylene glycol-carbon mixture and immediate mixing of this mixture with a Pt precursor at the beginning of the synthesis. The catalyst exhibits very uniform particle size distribution without agglomeration. The mass activities of the as-prepared catalyst are 13.4 mA/me(Pt), and 51.0 mA/mg(Pt) at 0.9 V and 0.85 V. respectively, which are about 1.7 times higher than those of commercial catalysts. English WILEY-V C H VERLAG GMBH TRANSITION-METALS CATALYST LAYER POLYOL PROCESS NANOPARTICLES PLATINUM DEGRADATION DURABILITY ELECTRODE CATHODE Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction Article 10.5012/bkcs.2010.31.6.1577 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.31, no.6, pp.1577 - 1582 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 31 6 1577 1582 scie scopus kci ART001525939 000279126800025 2-s2.0-77953946487 Chemistry, Multidisciplinary Chemistry Article TRANSITION-METALS CATALYST LAYER POLYOL PROCESS NANOPARTICLES PLATINUM DEGRADATION DURABILITY ELECTRODE CATHODE PEMFC Pt/C Polyol Oxygen reduction Mass activity