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| Abstract: |
| Temperature is a crucial factor that is intrinsically related to fuel cell performances and categorizes the proton exchange membranes (PEM) into high and low temperature (HT, LT) types. With water as proton conductor, working temperature of LT-PEM is limited below 100 ℃. PEM fuel cell with an elevated temperature (HT-PEMFC, >120 ℃) thus attracts much research attention on account of the significant benefits, such as simpler water management, faster electrode kinetics, improved CO tolerance of platinum catalyst, and heat recovery. As a well-known concept, numerous polymer membranes with doping phosphoric acid (PA) have been investigated for HT-PEMFC.In this review, the development trend for the most advanced technology of HT-PEM polybenzimidazole (PBI) membrane, other hydrocarbon-based membrane, and fluorinated membrane produced via pre-irradiation induced grafting with respect to their synthesis, properties, critical issues, and corresponding solutions is presented. |
| Key words: fuel cells PA PBI hydrocarbon pre-irradiation induced grafting |
| DOI：10.11916/j.issn.1005-9113.20084 |
| Clc Number:TB324 |
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| Descriptions in Chinese: |
| 综述：高温质子交换膜燃料电池用非全氟质子膜的制备 柯茜1,2，冯威2 （1.东岳上海先进氟硅材料研发中心 上海 201108；2.含氟功能膜材料国家重点实验室，山东 淄博255000） 中文说明：温度是影响燃料电池的关键因素之一，根据不同的工作温度聚合物电解质薄膜可被划分为高温和低温质子交换膜。低温质子交换膜主要依赖水进行离子传导，因此使用温度通常低于100℃。相比而言，可于120℃以上工作的高温质子交换膜由于其出众的特性，比如简化的水管理设备、加速的电极反应动力以及铂催化剂对CO耐性和系统中热能回收的提高而备受青睐。众所周知，目前高温质子交换膜领域的大量研究均以磷酸掺杂的聚合物薄膜为基础。本篇综述就适用于高温质子交换膜燃料电池的各类膜材料，特别是它们的合成、性能、技术关键点和相应的解决手段进行了讨论。涉及的膜结构包括聚苯并咪唑薄膜、其他碳氢结构薄膜以及预辐射接枝技术制备的含氟聚合物薄膜。 关键词：燃料电池,磷酸,聚苯并咪唑,碳氢化合物,预辐射引发接枝 |
