The thickness of the polymer electrolyte membrane has a great influence on the performance of the battery. The thickness of the film can be greatly reduced, and the internal resistance of the battery can be greatly reduced, and a large power output can be obtained. The macromolecular backbone structure of the perfluorosulfonic acid proton exchange membrane has good mechanical strength and chemical durability. The fluorine compound has hydrophobic properties, water is easily discharged, but the water retention rate decreases when the battery is operated, and the electrolyte membrane is affected. The conductivity is so that the reaction gas is humidified. The humidification technology of the polymer electrolyte membrane ensures excellent conductivity of the membrane, and also causes problems such as an increase in the size of the battery, a complicated system, and management of water in a low-temperature environment. Now a batch of new polymer materials, such as enhanced perfluorosulfonic acid type polymer proton exchange membrane, high temperature aromatic heterocyclic sulfonic acid polymer electrolyte membrane nano-scale carbon fiber material, a new conductive polymer material, etc., have been studied. Workers' concerns.