Membrane-electrode-assembly (MEA) for high temperature PEM Fuel Cells based on polymer / ionic liquid composites

这项德国/韩国联合提案（DFG / NRF）代表了用于高温聚合物电解质燃料电池（HT-PEMFC）系统的膜电极组件（MEA）的基础研究，该系统工作在远高于100°C的温度下，无需加湿原料气。该膜将是一种由合适的载体聚合物和合适的质子导电离子液体（PIL）组成的复合材料，也就是说，它将取代目前最先进的基于掺有磷酸的聚苯并咪唑的ht - pemfc。韩国合作伙伴是聚合物电解质膜的专家，将以这样一种方式制备这些膜，即适当的离子液体可以吸附在内部界面上，甚至可以化学吸附（共价键？）德国合作伙伴对离子液体有着长期的经验；他将识别并合成这些合适的离子液体。双方将测试这些聚合物/离子液体复合材料的质子电导率，并试图阐明聚合物/离子液体复合材料中的质子电导率机制。德国合作伙伴也是电催化方面的专家；他将鉴定和制备合适的电催化剂，并试图阐明氧还原反应的机理，这在pemfc中总是决定速率的。燃料电池在远高于100°C的温度下运行，允许使用其废热用于加热目的（热电联产）。燃料电池试验将在这两个研究地点使用本项目开发的创新mea进行。

This German/Korean joint proposal (DFG / NRF) represents a fundamental study of a membrane electrode assembly (MEA) for a high-temperature polymer electrolyte fuel cell (HT-PEMFC) system working at temperatures well above 100°C without the need of humidifying the feed gas. The membrane will be a composite consisting of an appropriate carrier polymer and an appropriate proton conducting ionic liquid (PIL), i.e. will be an alternative to HT-PEMFCs based on polybenzimidazole doped with phosphoric acid, the present state-of-the-art. The Korean partner is a specialist for polymer electrolyte membranes and will prepare those in such a way that appropriate ionic liquids can be adsorbed at inner interfaces or even chemisorbed (covalently bonded?). The German partner has a long-lasting experience with ionic liquids; he will identify and synthesize these appropriate ionic liquids. Both partners will test the proton conductivity of these polymer/ionic liquid composites and will try to elucidate the proton conductivity mechanism in polymer/ionic liquid composites. The German partner is also a specialist for electro-catalysis; he will identify and prepare appropriate electro-catalysts and try to elucidate the mechanism of the oxygen reduction reaction, which in PEMFCs is always rate-determining. Fuel cells running at temperatures well above 100 °C allow the use of their waste heat for heating purposes (combined heat and power). Fuel cell tests with the innovative MEAs developed in this project will be conducted at both research locations.