锂空气电池因其具有高理论能量密度、材料成本低廉、环境友好等优势而受到广泛关注。但目前缺少稳定电解液已成为制约其实用化的主要瓶颈之一。为此，我们提出以全氟磺酸锂聚合物为基材制备出满足锂空气电池使用要求的新型聚合物电解质的思路。在已有研究的基础上，通过设计并合成出具有稳定结构的全氟磺酸聚合物材料，并将其与离子液体和锂盐复合得到聚合物电解质，系统研究聚合物电解质组成、微观结构与性能之间关系，最终得到具有优异稳定性、高电导率的聚合物电解质。我们还将合成出电池电极用全氟磺酸锂聚合物粘结剂，在降低电极与聚合物电解质界面电阻的同时提高电极内锂离子传递速率。基于此，最终制备出高性能、长寿命的锂空气电池，为锂空气电池的实用化打下坚实的理论基础。

Lithium-air batteries have been attracted much more attention due to their high theoretical specific energy density, low cost and friendly environment. However, some challenges still limit their practical application. One of these challenges is the lack of stable electrolytes, which can survive nucleophilic attack of superoxide radical. In this proposed project, new stable polymer electrolyte based on lithiated perfluorinated sulfonic polymer matrix was developed for Li-air batteries. First, we will synthesize the perfluorinated sulfonic acid polymers with different chemical structures based on our previous mastered technology. Then, new polymer electrolytes consisted of lithium salts, ionic liquids and the synthesized lithiated perfluorinated sulfonic polymers will be prepared. Next, we will test and evaluate of these polymer electrolytes, optimize their components and structures, and thus obtain the polymer electrolytes with good ionic conductivity, high chemical and electrochemical stability which is suitable for the practical application of Li-air batteries. In addition, new electrode binders based on the lithiated perfluorinated sulfonic polymer will also been synthesized, which will not only reduce the interface resistance between electrode and polymer electrolyte, but also improve the performance of Li-air batteries. Finally, the Li-air batteries with high specific capacity and long cycle life will be demonstrated based on these new polymer electrolytes and electrode binders we developed in this proposed project. It can be expected that the results of this proposed project will lay a solid ground of theoretical research for Li-air batteries.