The Research Progress of Phosphoric Acid Doped Polybenizimidazole Based High-temperature Proton Exchange Membrane
With the rapid development of fuel cells,the balance between the improvement of performance and lifetime,and the reduction of the cost of the whole system become a bottleneck problem which restricts its application.As the key component of fuel cell,proton exchange membrane ensures the operation of the whole system.Polybenzimidazole(PBI)based high temperature proton exchange membrane(PEM)can greatly enhance the impurity tolerance of fuel cell and simplify its hydrothermal management,which reduce the cost.Therefore,it is an ideal Nafion alternative material.However,traditional PBI based PEM is easy to loss phosphoric acid during the operation and after acid loading,the mechanical strength decreases,resulting in the attenuation of battery performance.Aiming at the problems of PBI based proton exchange membrane,this paper reviews different methods that researchers attempted from various angles,hoping to summarize the general strategies that can be used for reference in the follow-up research.
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万方数据
维普
