燃料电池用填孔型质子交换膜

Pore-Filling Type Proton Exchange Membrane for Fuel Cells

填孔型质子交换膜是一种将电解质填充到多孔的基底膜中形成的新型质子交换膜。与传统的全氟磺酸膜相比,填孔型质子交换膜具有不溶胀、甲醇渗透率低、质子传导率高、价格低廉以及材料选择范围广等优点。本文介绍了以聚合物多孔膜、有机/无机多孔膜和无机多孔膜为基底的3种填孔型质子交换膜的研究现状,并对质子交换膜的发展方向和趋势进行了预测。

Proton exchange membrane is the key material for proton exchange membrane fuel cells （PEMFC）. Currently widely-used perfluorosulfonic acid membranes have some disadvantages, such as low thermal stability, easy swelling, excessive crossover of methanol and high price etc. Other membranes, including sulfonated polymer, radiation grafted membranes, organic-inorganic hybrids and acid-base blends, do not satisfy the criteria for PEMFC, which set a barrier to the development and commercialization of PEMFC. Pore-filling type proton exchange membrane is a new proton exchange membrane, which is formed by filling porous substrate with electrolytes. Compared with traditional perfluorosulfonic acid membranes, pore-filling type proton exchange membranes have many advantages, such as nonswelling , low methanol permeation, high proton conductivity, low cost and a wide range of materials to choose. In this paper, the progress on polymer-based, organic/inorganic compounds-based and inorganic compounds-based pore-filling type proton exchange membranes is introduced, and the developing trend of proton exchange membrane is suggested.