mirage

Low equivalent weight short-side-chain perfluorosulfonic acid ionomers in fuel cell cathode catalyst layers

Boloka/Manakin Repository

Show simple item record

dc.contributor.author Bessarabov, Dmitri
dc.contributor.author Holdcroft, Steven
dc.contributor.author Lei, Chao
dc.contributor.author Navessin, Titichai
dc.contributor.author Xie, Zhong
dc.contributor.author Ye, Siyu
dc.date.accessioned 2012-10-29T12:12:49Z
dc.date.available 2012-10-29T12:12:49Z
dc.date.issued 2011
dc.identifier.citation Lei, C. et al. 2011. Low equivalent weight short-side-chain perfluorosulfonic acid ionomers in fuel cell cathode catalyst layers. Journal of power sources, 196(15):6168-6176. [http://www.journals.elsevier.com/journal-of-power-sources/ ] en_US
dc.identifier.issn 0378-7753
dc.identifier.issn 1873-2755 (Online)
dc.identifier.uri http://hdl.handle.net/10394/7660
dc.description.abstract The morphology and fuel cell performance of cathode catalyst layers (CCLs) using low equivalent weight (EW) short-side-chain (SSC) perfluorosulfonic acid ionomers have been investigated in this work. The results were compared with those for a baseline CCL containing 30 wt% of the conventional ionomer 1100 EW Nafion®. The CCLs fabricated with 10–20 wt% of the Aquivion™ ionomer displayed a similar morphology to the Nafion®-based CCLs. Electrochemical surface areas (ECSA) and double layer capacitances of all the Aquivion™-based samples were similar to those of the baseline. The oxygen reduction reaction (ORR) kinetics in CCLs with 20 wt% and 30 wt% Aquivion™ were lower than the baseline under 100% relative humidity (RH), yet similar to the baseline at 70% RH. In situ electrochemical impedance spectroscopy (EIS) measurements suggested that the lowered ORR kinetics at 100% RH may be attributed to the large mass transport resistance in Aquivion™-based samples at low current densities. Relative to the baseline, CCLs containing 20 wt% Aquivion™ ionomer demonstrated an improvement in fuel cell performance under operating conditions of 95 °C and RH values of 30, 50 and 70%. The greater hydrophilicity of the SSC ionomers is believed to account for the improved fuel cell performance at the relatively higher operating temperature and dry conditions. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Fuel cell en_US
dc.subject catalyst layer en_US
dc.subject short-side-chain ionomer en_US
dc.subject MEA en_US
dc.subject equivalent weight en_US
dc.title Low equivalent weight short-side-chain perfluorosulfonic acid ionomers in fuel cell cathode catalyst layers en_US
dc.type Article en_US


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search the NWU Repository


Advanced Search

Browse

My Account

Statistics