Preparation And Study Of Pyridine Grafted Polyetheretherketone Anion Exchange Membranes

Anion exchange membrane fuel cells have the advantages of low cost,low permeability,and a wider range of fuel options.The performance of the core component anion exchange membrane directly affects the practical application of fuel cells.In this article,we chose self-made polyetheretherketone as the polymer backbone,and introduced pyridine into the side chain by bromination grafting to obtain ion conductivity.It is found through testing that it has excellent ion conductivity,which can be as high as 83.965m S cm^-1.In addition,it has good thermal stability and sufficient mechanical strength.In order to supplement the resistance of the membrane material in alkaline environment,we have also prepared a cross-linked membrane with a cross-linked structure containing 4,4-bipyridine.It retains more structure and performance in an alkaline environment,while reducing the dimensional stability of the membrane material.These results indicate that the combination of phase separation structure and cross-linking has potential applications in the field of alkaline fuel cells.