Alkaline solid electrolyte based on waterborne polyurethane/ion conduction polymer composite foam and preparation method

The invention belongs to the technical field of new energy materials, and relates to an alkaline solid electrolyte of waterborne polyurethane/ion conduction polymer composite foam and a preparation method. A chemical foaming method is adopted, waterborne polyurethane foam is taken as a framework to introduce an ionic conduction polymer, and the ionic conduction polymer is soaked in an alkaline solution to obtain the alkaline solid electrolyte based on the waterborne polyurethane/ionic conduction polymer composite foam. The ionic conduction polymer is used as an ion transmission carrier and forms an ion transmission channel in the waterborne polyurethane foam, so that the material obtains excellent comprehensive performance, and the electrolyte is excellent in mechanical property, good in rebound resilience and relatively good in stability under an alkaline condition; and meanwhile, the alkaline solid electrolyte prepared by the method has relatively low volume resistance and relatively high room-temperature c