PROTON TRANSPORT MATERIAL AND RAW MATERIALS TO MANUFACTURE THE SAME; ION EXCHANGER, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL THAT USE THE PROTON TRANSPORT MATERIAL

摘要

Provided are: a proton transport material, suitable for electrolyte membranes of fuel cells and the like, which improves the mechanical properties of a sulfonic acid-type liquid crystal polymer material, and can be kept as a membrane in a solid state while maintaining the molecular arrangement of the liquid crystal state; an ion exchanger, a membrane electrode assembly (MEA), and a fuel cell that use the proton transport material; and the raw materials for manufacturing the proton transport material. The proton transport material has a molecular structure wherein the sulfonic acid-type liquid crystal polymer material is cross-linked with a part other than a sulfonic acid group using a cross-linking agent that has two or more functional groups.