中温质子交换膜燃料电池高质子传导率磺化芳香族聚合物膜  

Highly Proton-Conductive Sulfonated Aromatic Polymers for MediumTemperature Proton Exchange Membrane Fuel Cells

作　　者：漆志刚 宫琛亮[1] 梁宇[1] 李辉[1] 张树江[1] 李彦锋[1] 

机构地区：[1]兰州大学化学化工学院功能有机分子化学国家重点实验室,兰州730000

出　　处：《化学进展》2013年第12期2103-2111,共9页Progress in Chemistry

基　　金：国家自然科学基金项目(No.21204033);甘肃省青年科技基金计划(No.1208RJYA016);中央高校基本科研业务费专项资金项目(No.2022012zr0023)资助

摘　　要：磺化的芳香类聚合物由于具有良好的耐热性能、化学稳定性、机械性能、加工性能以及较低的燃料渗透性而受到燃料电池质子交换膜领域广泛的关注。然而,与已经应用的Nafion膜相比,大部分磺化的无规离聚物的质子传导率仍然比较低。通过设计聚合物的结构可以提高质子交换膜在高温及低相对湿度(RH)下的质子传导性能。本文分别从磺化嵌段共聚物、侧链型磺化聚合物、局部磺酸基稠密的聚合物三方面综述了磺化芳香类聚合物膜的设计、合成及相关质子传导率之间的关系。同时,为进一步提高膜的质子传导率及其他性能,对制备掺杂无机质子导体或酸化的无机颗粒的复合质子交换膜进行了概述。Sulfonated aromatic polymers have attracted lots of attention owning to their high thermal and chemical stability, excellent mechanical strength, low fuel permeability and easy manufacturing. For these reasons, sulfonated aromatic proton exchange membranes （PEMs） have been recognized as promising electrolyte materials. However, proton conduction in the majority of randomly sulfonated ionomers is too low as compared with Nafion （DupontTM） which have been currently widely used. Redesign of the polymer chemical structure is demanded for improving the properties of ionomers at elevated temperatures and reduced relative humidity （RH）. This paper embarks from sulfonated aromatic block eopolymers, grafted sulfonated aromatic copolymers and locally and densely sulfonated aromatic copotymers, and reviews the relationship between the structure and proton conductivities of sulfonated aromatic polymers. Meanwhile, in order to improve the proton conductivities and other properties, inorganic proton conductors or acidic inorganic materials are doped into membranes to prepare composite membranes.

关 键 词：中温燃料电池 磺化芳香族聚合物 高质子传导率质子交换膜 纳米复合材料 

分 类 号：O632.7[理学—高分子化学] TM911.4[理学—化学]