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US09553326B2 Aromatic sulfonic acid derivative, sulfonic acid group-containing polymer, block copolymer, polymer electrolyte material, polymer electrolyte form article, and polymer electrolyte fuel cell 有权
芳族磺酸衍生物,含磺酸基的聚合物,嵌段共聚物,聚合物电解质材料,聚合物电解质成型体和聚合物电解质燃料电池

Aromatic sulfonic acid derivative, sulfonic acid group-containing polymer, block copolymer, polymer electrolyte material, polymer electrolyte form article, and polymer electrolyte fuel cell
Abstract:
Provided are an aromatic sulfonic acid derivative and a sulfonic acid group-containing polymer, each of which has excellent proton conductivity even under low humidification conditions, while having excellent mechanical strength and chemical stability, and enables a solid polymer fuel cell to achieve high output and excellent physical durability when used therein. This aromatic sulfonic acid derivative has a specific structure and is characterized in that a sulfonic acid group is introduced into more than 50% of all the phenyl groups. This sulfonic acid group-containing polymer is characterized by being obtained by polymerization using the aromatic sulfonic acid derivative, and is also characterized by having a specific structure.
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