Preparation of MEA with the Polybenzimidazole Membrane for High Temperature PEM Fuel Cell

Electrochem. Solid-State Lett., Volume 14, Issue 3, pp. B38-B40 (2011)

(Published 4 January 2011)

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ABSTRACT

REFERENCES (11)

Yong-Hun Cho,¹ Sung-Kon Kim,² Tae-Ho Kim,² Yoon-Hwan Cho,² Ju Wan Lim,² Namgee Jung,² Won-Sub Yoon,¹ Jong-Chan Lee,² and Yung-Eun Sung²
¹School of Advanced Materials Engineering, Kookmin University, Seongbuk-gu, Seoul, Korea
²World Class University Program of Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, College of Engineering, Seoul National University, Seoul, Korea

Apolybenzimidazole (PBI)-based catalyst-coated membrane (CCM) as a membrane electrode assembly(MEA) in a high temperature polymer electrolyte membrane (PEM) fuelcell was fabricated by spraying catalyst ink containing PBI ionomeron both sides of a PBI membrane, which was thensoaked in 85% H₃PO₄ (phosphoric acid, PA). The performance ofPA-doped CCM was two times higher than that of aconventional PA-doped catalyst-coated substrate as MEA, which was fabricated bya complex process involving fabricating gas diffusion electrodes and ahot-pressing process. The PA-doped CCM structure showed improved performance undernonhumidification and at 180°C.

©2011 The Electrochemical Society

History:	Submitted 28 July 2010; revised 6 December 2010; published 4 January 2011
Digital Object Identifier	http://dx.doi.org/10.1149/1.3531817

KEYWORDS and PACS

Keywords

catalysis, conducting polymers, diffusion, electrochemical electrodes, high-temperature effects, hot pressing, proton exchange membrane fuel cells, spraying

PACS