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

Seong-Woo Choi²  Jung Ock Park²  Chanho Pak²  Kyoung Hwan Choi²  Jong-Chan Lee¹ 

[1] Department of Chemical and Biological Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea; E-Mail:;Energy Lab, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Nongseo-dong, Giheung-gu, Gyeonggi-do 446-712, Korea; E-Mails:

关键词: fuel cells;    membranes;    polybenzimidazole;    polybenzoxazine;    phosphoric acid;   

DOI  :  10.3390/polym5010077

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.