Matches in SemOpenAlex for { <https://semopenalex.org/work/W2913751520> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W2913751520 abstract "This works contributes to the identification of the various degradation mechanisms in Polymer Electrolyte Membrane Fuel Cell during start-up and shut-down operations. Single start-ups and shut-downs are first analysed using a cell with segmented cathode current collectors. Thus, internal currents which occur during these operations can be measured. Carbon dioxide measured in the cathode exhaust gas reveals that they result partially from carbon oxidation. Another contribution is the reversible or non reversible redox reactions involving platinum. The heterogeneity of the non reversible platinum oxidation between the inlet and outlet of the cathode is evidenced by the in-situ monitoring of the Electrochemical Surface Area during long-term start-up and shut-down aging protocols. Post-mortem analysis reveals another level of heterogeneity, which concerns also carbon oxidation, between land and channel. From these experiments, it appears also that degradations are more important when gases are injected with a low velocity in the anode compartment and when air is used instead of nitrogen to flush the anode compartment during shut-down. The influence of the MEA characteristics on the extent of the degradation observed during these aging protocols is also analyzed. High platinum loading in the anode and high surface carbon electrodes accelerate the drop of the electrical performances, while increasing the cathode platinum loading limits their decay. Finally, numerical simulations of start-ups complete the experimental results. Reversible platinum oxidation was found to be one of the main contribution to the internal currents" @default.
- W2913751520 created "2019-02-21" @default.
- W2913751520 creator A5046147778 @default.
- W2913751520 date "2013-06-28" @default.
- W2913751520 modified "2023-09-23" @default.
- W2913751520 title "Study of the degradations induced by start-up/shut-down operations in PEMFC" @default.
- W2913751520 hasPublicationYear "2013" @default.
- W2913751520 type Work @default.
- W2913751520 sameAs 2913751520 @default.
- W2913751520 citedByCount "0" @default.
- W2913751520 crossrefType "dissertation" @default.
- W2913751520 hasAuthorship W2913751520A5046147778 @default.
- W2913751520 hasConcept C116915560 @default.
- W2913751520 hasConcept C119599485 @default.
- W2913751520 hasConcept C127413603 @default.
- W2913751520 hasConcept C132319479 @default.
- W2913751520 hasConcept C147789679 @default.
- W2913751520 hasConcept C161790260 @default.
- W2913751520 hasConcept C17525397 @default.
- W2913751520 hasConcept C178790620 @default.
- W2913751520 hasConcept C179104552 @default.
- W2913751520 hasConcept C185592680 @default.
- W2913751520 hasConcept C192562407 @default.
- W2913751520 hasConcept C2779679103 @default.
- W2913751520 hasConcept C2987658370 @default.
- W2913751520 hasConcept C3017653385 @default.
- W2913751520 hasConcept C42360764 @default.
- W2913751520 hasConcept C49110097 @default.
- W2913751520 hasConcept C518104683 @default.
- W2913751520 hasConcept C52859227 @default.
- W2913751520 hasConcept C55904794 @default.
- W2913751520 hasConcept C68801617 @default.
- W2913751520 hasConcept C89395315 @default.
- W2913751520 hasConceptScore W2913751520C116915560 @default.
- W2913751520 hasConceptScore W2913751520C119599485 @default.
- W2913751520 hasConceptScore W2913751520C127413603 @default.
- W2913751520 hasConceptScore W2913751520C132319479 @default.
- W2913751520 hasConceptScore W2913751520C147789679 @default.
- W2913751520 hasConceptScore W2913751520C161790260 @default.
- W2913751520 hasConceptScore W2913751520C17525397 @default.
- W2913751520 hasConceptScore W2913751520C178790620 @default.
- W2913751520 hasConceptScore W2913751520C179104552 @default.
- W2913751520 hasConceptScore W2913751520C185592680 @default.
- W2913751520 hasConceptScore W2913751520C192562407 @default.
- W2913751520 hasConceptScore W2913751520C2779679103 @default.
- W2913751520 hasConceptScore W2913751520C2987658370 @default.
- W2913751520 hasConceptScore W2913751520C3017653385 @default.
- W2913751520 hasConceptScore W2913751520C42360764 @default.
- W2913751520 hasConceptScore W2913751520C49110097 @default.
- W2913751520 hasConceptScore W2913751520C518104683 @default.
- W2913751520 hasConceptScore W2913751520C52859227 @default.
- W2913751520 hasConceptScore W2913751520C55904794 @default.
- W2913751520 hasConceptScore W2913751520C68801617 @default.
- W2913751520 hasConceptScore W2913751520C89395315 @default.
- W2913751520 hasLocation W29137515201 @default.
- W2913751520 hasOpenAccess W2913751520 @default.
- W2913751520 hasPrimaryLocation W29137515201 @default.
- W2913751520 hasRelatedWork W1720897892 @default.
- W2913751520 hasRelatedWork W1974739348 @default.
- W2913751520 hasRelatedWork W1989059291 @default.
- W2913751520 hasRelatedWork W1992903503 @default.
- W2913751520 hasRelatedWork W2001044670 @default.
- W2913751520 hasRelatedWork W2033581234 @default.
- W2913751520 hasRelatedWork W2049965433 @default.
- W2913751520 hasRelatedWork W2058774802 @default.
- W2913751520 hasRelatedWork W2058829388 @default.
- W2913751520 hasRelatedWork W2062500026 @default.
- W2913751520 hasRelatedWork W2066583238 @default.
- W2913751520 hasRelatedWork W2075713148 @default.
- W2913751520 hasRelatedWork W2084302874 @default.
- W2913751520 hasRelatedWork W2087037966 @default.
- W2913751520 hasRelatedWork W2090192470 @default.
- W2913751520 hasRelatedWork W2339057871 @default.
- W2913751520 hasRelatedWork W2413542635 @default.
- W2913751520 hasRelatedWork W2559010653 @default.
- W2913751520 hasRelatedWork W2968234090 @default.
- W2913751520 hasRelatedWork W3092106615 @default.
- W2913751520 isParatext "false" @default.
- W2913751520 isRetracted "false" @default.
- W2913751520 magId "2913751520" @default.
- W2913751520 workType "dissertation" @default.