- Sulfonated mesoporous ceria-silica composite membrane and preparing method thereof

摘要

The present invention relates to a sulfonated mesoporous ceria-silica composite membrane comprising a sulfonated mesoporous ceria-silica modified with sulfonic acid and a polymer forming a polymer electrolyte membrane for fuel cells mixed with the sulfonated mesoporous ceria-silica and a method for producing the same . Thus, sulfonated mesoporous ceria-silica composites were prepared while maintaining the hexagonal structure and mesoporous structure of the ceria-silica with the sulfonic acid containing the organosilane, and sulfonated mesoporous ceria- Silica composite membrane. In this case, the oxidation stability of the electrolyte membrane is greatly increased, and durability can be maintained even for a long time operation of the fuel cell, so that the efficiency and lifetime of the fuel cell can be greatly improved.