DC Field | Value | Language |
---|---|---|
dc.contributor.author | Eom, KwangSup | ko |
dc.contributor.author | Cho, EunAe | ko |
dc.contributor.author | Nam, Suk-Woo | ko |
dc.contributor.author | Lim, Tae-Hoon | ko |
dc.contributor.author | Jang, Jong Hyun | ko |
dc.contributor.author | Kim, Hyoung-Juhn | ko |
dc.contributor.author | Hong, Bo Ki | ko |
dc.contributor.author | Yang, Yoo Chang | ko |
dc.date.accessioned | 2014-12-16T01:24:54Z | - |
dc.date.available | 2014-12-16T01:24:54Z | - |
dc.date.created | 2014-10-23 | - |
dc.date.created | 2014-10-23 | - |
dc.date.created | 2014-10-23 | - |
dc.date.issued | 2012-09 | - |
dc.identifier.citation | ELECTROCHIMICA ACTA, v.78, pp.324 - 330 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.uri | http://hdl.handle.net/10203/192862 | - |
dc.description.abstract | To examine durability of metallic bipolar plates (Bps) under reverse current conditions, the degradation of PEMFC employing graphite, bare 316L, and CrN-coated 316L BPs is investigated via a 1.4V pulse cycling test. After 20 cycles, the average voltage decay rate at 160 mA cm(-2) is 6.8, 16.8, and 12.0 mV cycle(-1) for the single cell using graphite, bare 316L, and CrN-coated 316L BPs, respectively. SEM, EPMA, and TEM analyses of the cathodes that experienced an extraordinary high voltage of 1.4 V show that carbon corrosion and Pt migration/agglomeration occur similarly for the single cells, irrespective of the bipolar plate material. In contrast, in the membrane tested with bare 316L and CrN-coated 316L, Fe and Cr are detected; the amounts of Fe and Cr in the membrane are higher for bare 316L than for CrN-coated 316L. The membrane contamination results in a decrease in the ionic conductivity of the membranes, which mainly contributes to the faster performance decay of the single cells employing bare 316L and CrN-coated 316L bipolar plates. Thus, if automotive PEMFCs using metallic BPs are exposed to reverse current conditions upon start/stop cycles, metal contamination of the membrane could accelerate the performance decay in addition to the cathode degradation, such as carbon corrosion and Pt migration/agglomeration. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | OXYGEN PARTIAL-PRESSURE | - |
dc.subject | STAINLESS-STEEL | - |
dc.subject | IMPEDANCE SPECTROSCOPY | - |
dc.subject | CORROSION BEHAVIOR | - |
dc.subject | DUMMY LOAD | - |
dc.subject | PEMFC | - |
dc.subject | DURABILITY | - |
dc.subject | CATALYST | - |
dc.subject | CATHODE | - |
dc.subject | CONDUCTIVITY | - |
dc.title | Degradation behavior of a polymer electrolyte membrane fuel cell employing metallic bipolar plates under reverse current condition | - |
dc.type | Article | - |
dc.identifier.wosid | 000308259500043 | - |
dc.identifier.scopusid | 2-s2.0-84864283265 | - |
dc.type.rims | ART | - |
dc.citation.volume | 78 | - |
dc.citation.beginningpage | 324 | - |
dc.citation.endingpage | 330 | - |
dc.citation.publicationname | ELECTROCHIMICA ACTA | - |
dc.identifier.doi | 10.1016/j.electacta.2012.06.024 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Cho, EunAe | - |
dc.contributor.nonIdAuthor | Eom, KwangSup | - |
dc.contributor.nonIdAuthor | Nam, Suk-Woo | - |
dc.contributor.nonIdAuthor | Lim, Tae-Hoon | - |
dc.contributor.nonIdAuthor | Jang, Jong Hyun | - |
dc.contributor.nonIdAuthor | Kim, Hyoung-Juhn | - |
dc.contributor.nonIdAuthor | Hong, Bo Ki | - |
dc.contributor.nonIdAuthor | Yang, Yoo Chang | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Polymer electrolyte membrane fuel cell | - |
dc.subject.keywordAuthor | Bipolar plate | - |
dc.subject.keywordAuthor | Degradation | - |
dc.subject.keywordAuthor | 1.4 V pulse cycling | - |
dc.subject.keywordAuthor | Stainless steel bipolar plate | - |
dc.subject.keywordPlus | OXYGEN PARTIAL-PRESSURE | - |
dc.subject.keywordPlus | STAINLESS-STEEL | - |
dc.subject.keywordPlus | CORROSION BEHAVIOR | - |
dc.subject.keywordPlus | PEMFC | - |
dc.subject.keywordPlus | DURABILITY | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | ENVIRONMENT | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | HYDROGEN | - |
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