Title

Effect Of Equivalent Weight Of Phosphotungstic Add-Incorporated Composite Membranes On The High Temperature Operation Of Pem Fuel Cells

Abstract

Two types of composite membrane were prepared by incorporating phosphotungstic acid (PTA) into host Nafion® membranes; one with 1100 EW of Nafion® and 15% PTA, namely FSEC1, and the other with 750 EW of Nafion® and 15% PTA, namely FSEC3. Catalyst-coated membranes (CCMs) were made using the composite membranes with the 32 wt.% and 25 wt.% ionomer contents in the catalyst layer for FSEC1 and FSEC3 membranes, respectively. The composite membranes were tested in a 25 cm2 single cell at the temperature of 80°C, 100°C, and 120°C and compared to Nafion® 112. At 80°C and 100°C, the performance of FSEC1 membrane showed the highest and followed by Nafion® 112 and FSEC3 membranes. However, both the composite membranes, FSEC1 and FSEC3, outperformed Nafion® 112 at 120°C, showing great potential for their application in the high temperature (∼120°C) operations. At 400 mA/cm2, the potentials maintained were 0.47V, 0.55V, and 0.51V for Nafion®, FSEC1 and FSEC3 membranes, respectively. The resistance of oxygen mass transfer in FSEC3 was pronounced at high temperature as evidenced by oxygen gain at the temperature. © The Electrochemical Society.

Publication Date

1-1-2009

Publication Title

ECS Transactions

Volume

16

Issue

2 PART 2

Number of Pages

2157-2164

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1149/1.2982055

Socpus ID

63149173599 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/63149173599

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