| 摘要 |
The present invention provides: a polymer electrolyte composition which can achieve excellent proton conductivity under slightly humidified conditions, excellent mechanical strength and excellent physical durability, has excellent practicality, and can be produced using a nitrogen-containing additive, wherein the nitrogen-containing additive can prevent the elution of the additive under a strongly acidic atmosphere during the operation of a fuel cell, has excellent chemical stability so as to tolerate a strongly acidic atmosphere, can be dissolved in various general-purpose organic solvents, has superior processability, can be mixed with an ionic-group-containing polymer, can prevent the occurrence of phase separation during the formation of a film, and can prevent the formation of an island-in-sea-like phase separation structure or the occurrence of bleeding out during the formation of a film; and a polymer electrolyte membrane, a membrane electrode assembly and a polymer electrolyte fuel cell, each of which is produced using the polymer electrolyte composition. The polymer electrolyte composition according to the present invention comprises at least an ionic-group-containing polymer (A) and a nitrogen-containing additive (B), said polymer electrolyte composition being characterized in that the nitrogen-containing additive (B) is represented by a specific structural formula. |
| 主权项 |
1. A polymer electrolyte composition comprising at least an ionic-group-containing polymer (A) and a nitrogen-containing additive (B), wherein the nitrogen-containing additive (B) comprises a constituent unit at least (C1) or a constituent unit (C2): in which Ar represents an arylene group, and R1 represents at least one group selected from among a halogen, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a carboxyl group, a carboxylate ester group, a phosphino group, a phosphine oxide group, a phosphonic acid group, a phosphoester group, a sulfonic acid group, a sulfate ester group, a hydroxyl group, an amino group, a cyano group and a nitro group, j represents an integer of 0 to 7, k represents an integer of 2 or more, and all R1s may be the same or different from one another, in which Ar represents an arylene group, and R2 represents at least one group selected from among a halogen, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a carboxyl group, a carboxylate ester group, a phosphino group, a phosphine oxide group, a phosphonic acid group, a phosphoester group, a sulfonic acid group, a sulfate ester group, a hydroxyl group, an amino group, a cyano group and a nitro group, X represents at least one group selected from among a hydrogen atom, a halogen, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a carboxyl group, a carboxylate ester group, a phosphino group, a phosphine oxide group, a phosphonic acid group, a phosphoester group, a sulfonic acid group, a sulfate ester group, a hydroxyl group, an amino group, a cyano group and a nitro group, m represents an integer of 0 to 6, n represents an integer of 2 to 4, and all R2s and Xs may be the same or different from one another. |
