Cho, EA Ko, JJ Ha, HY Hong, SA Lee, KY Lim, TW Oh, IH 2024-01-21T08:02:14Z 2024-01-21T08:02:14Z 2021-09-03 2003-12 0013-4651 https://pubs.kist.re.kr/handle/201004/138066 Freezing of water in a polymer electrolyte membrane fuel cell (PEMFC) may cause severe problems in driving a fuel cell vehicle during the winter time. Characteristics of PEMFC which suffered low temperatures below zero celsius were examined with thermal cycles during which the temperature of the environment chamber was cycled from 80 to -10 degreesC. With the thermal cycles, the cell performance was degraded due to the phase transformation and volume changes of water. Effects of freezing of water in a PEMFC on the electrode structure and polarization resistance were examined by Brunauer, Emmett, Teller analysis, cyclic voltammetry, and ac impedance spectroscopy. (C) 2003 The Electrochemical Society. English ELECTROCHEMICAL SOC INC ELECTROLYTE FUEL-CELLS PLATINUM Characteristics of the PEMFC repetitively brought to temperatures below 0 degrees C Article 10.1149/1.1621877 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.150, no.12, pp.A1667 - A1670 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 150 12 A1667 A1670 scie scopus 000186902400016 2-s2.0-0347682200 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article ELECTROLYTE FUEL-CELLS PLATINUM PEMFC freezing of water