Title

Investigation Of The Presence Of A Saturating Media During Hot Pressing Of Proton Exchange Membranes To Improve Performance

Abstract

To circumvent conductivity and therefore performance losses due to hot pressing, proton exchange membranes (PEMs) were immersed in high-boiling point solvents prior to hot pressing. It was hypothesized that the presence of the high boiling point solvents during hot pressing would prevent collapse of the hydrophilic domains because, unlike water, they would remain in the membranes even at temperatures above 100°C. The presence of high-boiling point solvents during hot pressing improved the conductivity of the membranes 20-30%. The water contents of the membranes also increased and the dry densities of the membranes decreased when the high boiling point solvents were used during hot pressing. It is hypothesized that this increase in water content and conductivity and decrease in membrane density is due to the high boiling point solvents preventing the collapse of the hydrophilic pore walls during hot pressing, creating void spaces and therefore allowing more room for water. ©The Electrochemical Society.

Publication Date

1-1-2010

Publication Title

ECS Transactions

Volume

28

Number of Pages

61-68

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1149/1.3496613

Socpus ID

79959510991 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79959510991

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