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Polymers 2013, 5(1), 77-111; doi:10.3390/polym5010077
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Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell

1
, 1
, 1
, 1
, 2
 and 1,*
1 Energy Lab, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Nongseo-dong, Giheung-gu, Gyeonggi-do 446-712, Korea 2 Department of Chemical and Biological Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
* Author to whom correspondence should be addressed.
Received: 27 December 2012 / Revised: 16 January 2013 / Accepted: 17 January 2013 / Published: 23 January 2013
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Abstract

Elevated-temperature (100~200 °C) polymer electrolyte membrane (PEM) fuel cells have many features, such as their high efficiency and simple system design, that make them ideal for residential micro-combined heat and power systems and as a power source for fuel cell electric vehicles. A proton-conducting solid-electrolyte membrane having high conductivity and durability at elevated temperatures is essential, and phosphoric-acid-containing polymeric material synthesized from cross-linked polybenzoxazine has demonstrated feasible characteristics. This paper reviews the design rules, synthesis schemes, and characteristics of this unique polymeric material. Additionally, a membrane electrode assembly (MEA) utilizing this polymer membrane is evaluated in terms of its power density and lifecycle by an in situ accelerated lifetime test. This paper also covers an in-depth discussion ranging from the polymer material design to the cell performance in consideration of commercialization requirements.
Keywords: fuel cells; membranes; polybenzimidazole; polybenzoxazine; phosphoric acid fuel cells; membranes; polybenzimidazole; polybenzoxazine; phosphoric acid
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Choi, S.-W.; Park, J.O.; Pak, C.; Choi, K.H.; Lee, J.-C.; Chang, H. Design and Synthesis of Cross-Linked Copolymer Membranes Based on Poly(benzoxazine) and Polybenzimidazole and Their Application to an Electrolyte Membrane for a High-Temperature PEM Fuel Cell. Polymers 2013, 5, 77-111.

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