Yu, HB Kim, JH Lee, HI Scibioh, MA Lee, J Han, J Yoon, SP Ha, HY 2024-01-21T05:38:29Z 2024-01-21T05:38:29Z 2021-09-03 2005-01-10 0378-7753 https://pubs.kist.re.kr/handle/201004/136828 Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere, leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial pressure (less than or equal to0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform distribution of CeO2 around platinum sites. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV OXYGEN REDUCTION OXIDE CERIA ELECTROLYTE OXIDATION ELECTROOXIDATION PERFORMANCE KINETICS PROGRESS CARBON Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell Article 10.1016/j.jpowsour.2004.08.015 1 JOURNAL OF POWER SOURCES, v.140, no.1, pp.59 - 65 JOURNAL OF POWER SOURCES 140 1 59 65 scie scopus 000226265900008 2-s2.0-10644229958 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article OXYGEN REDUCTION OXIDE CERIA ELECTROLYTE OXIDATION ELECTROOXIDATION PERFORMANCE KINETICS PROGRESS CARBON air utilization cathode catalyst CeO2 direct methanol fuel cell oxygen storage material MEA