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发明公开
CN101000967A 一种质子交换膜燃料电池用的膜电极及其制备方法 无效 - 撤回

一种质子交换膜燃料电池用的膜电极及其制备方法
摘要：
本发明公开了一种质子交换膜燃料电池用的膜电极及其制备方法，由三层构成，中间层为质子交换膜，两侧分别为多孔阴极催化扩散层和多孔阳极催化扩散层。多孔阴极催化扩散层和多孔阳极催化扩散层均是由催化剂、粘结剂和碳纤维组成，其层外表面是碳纤维。本发明结构的膜电极是利用静电植绒技术直接将碳纤维植入到涂刷催化剂浆料的质子交换膜上，再经过烘干处理得到。从而简化了膜电极的制备工艺，减少了层与层之间的接触电阻，提高了膜电极的气体快速扩散和水分及时排出的能力，改善了膜电极的电化学性能，在电流密度为200mA/cm2的条件下，电池的放电功率增加14～20％。
摘要（英）：

This invention discloses a membrane electrode for PEMFC and its preparation method, which is made of three tiers. The middle layer is proton exchange membrane, and the two-side layers are porous cathode and porous anode catalyst-diffusion layer respectively which are both made of the catalyst, slurry and carbon fiber on the outer surface. The membrane electrode of this invention is obtained by using static flocking technology to implant the carbon fiber directly onto PEM with catalyst slurry and then drying. It simplifies the process of membrane electrode, reduces the contact resistance between layers, raises the capability of gas quick spreading and water timely discharge, and improves the electrochemical properties. When the current density is 200mA/cm2, the discharge power of battery increases 14~20%.

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