Title

Factors Accelerating Membrane Degradation Rate And The Underlying Degradation Mechanism In Pemfc

Abstract

Membrane degradation and failure is one of the factors limiting the overall durability of the polymer electrolyte membrane fuel cell. The fluoride emission rate (FER), which was calculated from the fuel cell effluent water analysis, was used to quantify the membrane degradation. The FER was found to decrease with an increase in load in the range from open circuit voltage (OCV) to 150 mA/cm2. Since at OCV no current is drawn from the fuel cell the effect of location of Pt/C catalyst on the FER was evaluated by having only one layer of catalyst applied to the membrane. The membrane degradation rate was found to be very high at OCV irrespective of whether the catalyst is present at the anode, cathode or in the membrane (catalyst layer sandwiched between 2 membranes). Effect of Pt/C catalyst exposure to oxygen is shown to have a significant effect on the FER at OCV. copyright The Electrochemical Society.

Publication Date

1-1-2006

Publication Title

ECS Transactions

Volume

1

Issue

8

Number of Pages

275-282

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1149/1.2214560

Socpus ID

33845242466 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845242466

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