Polymer having oxycarbon group, and use thereof

A polymer electrolyte comprising a polymer having an oxocarbon group represented by the following formula (1)

• wherein X1 and X2 independently represent —O—, —S—, or —NR—, and Z represents —CO—, —C(S)—, —C(NR′)—, alkylene group which may have substitution groups, or arylene group which may have substitution groups, wherein R and R′ of NR and NR′ independently represent hydrogen atom, alkyl group with carbon number of 1 to 6 which may have substitution groups, or aryl group with carbon number of 6 to 10 which may have substitution groups;
• n is a repeating number and represents the number of n=0 to 2, n Z-groups may be same or different from each other;
• and B represents hydrogen atom or a monovalent metal atom,
• wherein ion exchange capacity of the polymer is bigger than 3.0 meq/g, and
• the main chain structure of the polymer is selected from the group consisting of vinyl polymers, polyoxyalkylenes, polysiloxanes, polyesters, polyimides, polyamides, polybenzoxazoles, polybenzimidazoles, polyaryleneethers, polyarylenes, polyarylenesulfides, polyetherketones, polyethersulfones, and polyphosphazenes, and copolymers thereof.

A polymer electrolyte membrane comprising a polymer electrolyte comprising a polymer having an oxocarbon group represented by the following formula (1)

• wherein X1 and X2 independently represent —O—, —S—, or —NR—, and Z represents —CO—, —C(S)—, —C(NR′)—, alkylene group which may have substitution groups, or arylene group which may have substitution groups, wherein R and R′ of NR and NR′ independently represent hydrogen atom, alkyl group with carbon number of 1 to 6 which may have substitution groups, or aryl group with carbon number of 6 to 10 which may have substitution groups;
• n is a repeating number and represents the number of n=0 to 2, n Z-groups may be same or different from each other;
• and B represents hydrogen atom or a monovalent metal atom,
• wherein ion exchange capacity of the polymer is bigger than 3.0 meq/g, and
• the main chain structure of the polymer is selected from the group consisting of vinyl polymers, polyoxyalkylenes, polysiloxanes, polyesters, polyimides, polyamides, polybenzoxazoles, polybenzimidazoles, polyaryleneethers, polyarylenes, polyarylenesulfides, polyetherketones, polyethersulfones, and polyphosphazenes, and copolymers thereof.

A catalytic composition comprising a polymer electrolyte comprising a polymer having an oxocarbon group represented by the following formula (1)

• wherein X1 and X2 independently represent —O—, —S—, or —NR—, and Z represents —CO—, —C(S)—, —C(NR′)—, alkylene group which may have substitution groups, or arylene group which may have substitution groups, wherein R and R′ of NR and NR′ independently represent hydrogen atom, alkyl group with carbon number of 1 to 6 which may have substitution groups, or aryl group with carbon number of 6 to 10 which may have substitution groups;
• n is a repeating number and represents the number of n=0 to 2, n Z-groups may be same or different from each other;
• and B represents hydrogen atom or a monovalent metal atom,
• wherein ion exchange capacity of the polymer is bigger than 3.0 meq/g,
• a reaction which the catalytic composition catalyzes is an oxidation-reduction reaction of hydrogen atoms and oxygen atoms, and
• the main chain structure of the polymer is selected from the group consisting of vinyl polymers, polyoxyalkylenes, polysiloxanes, polyesters, polyimides, polyamides, polybenzoxazoles, polybenzimidazoles, polyaryleneethers, polyarylenes, polyarylenesulfides, polyetherketones, polyethersulfones, and polyphosphazenes, and copolymers thereof.

A polymer electrolyte membrane-electrode assembly comprising a polymer electrolyte comprising a polymer having an oxocarbon group represented by the following formula (1)

• wherein X1 and X2 independently represent —O—, —S—, or —NR—, and Z represents —CO—, —C(S)—, —C(NR′)—, alkylene group which may have substitution groups, or arylene group which may have substitution groups, wherein R and R′ of NR and NR′ independently represent hydrogen atom, alkyl group with carbon number of 1 to 6 which may have substitution groups, or aryl group with carbon number of 6 to 10 which may have substitution groups;
• n is a repeating number and represents the number of n=0 to 2, n Z-groups may be same or different from each other;
• and B represents hydrogen atom or a monovalent metal atom,
• wherein ion exchange capacity of the polymer is bigger than 3.0 meq/g, and
• the main chain structure of the polymer is selected from the group consisting of vinyl polymers, polyoxyalkylenes, polysiloxanes, polyesters, polyimides, polyamides, polybenzoxazoles, polybenzimidazoles, polyaryleneethers, polyarylenes, polyarylenesulfides, polyetherketones, polyethersulfones, and polyphosphazenes, and copolymers thereof.

A polymer electrolyte membrane fuel cell comprising a polymer electrolyte comprising a polymer having an oxocarbon group represented by the following formula (1)

• wherein X1 and X2 independently represent —O—, —S—, or —NR—, and Z represents —CO—, —C(S)—, —C(NR′)—, alkylene group which may have substitution groups, or arylene group which may have substitution groups, wherein R and R′ of NR and NR′ independently represent hydrogen atom, alkyl group with carbon number of 1 to 6 which may have substitution groups, or aryl group with carbon number of 6 to 10 which may have substitution groups;
• n is a repeating number and represents the number of n=0 to 2, n Z-groups may be same or different from each other;
• and B represents hydrogen atom or a monovalent metal atom,
• wherein ion exchange capacity of the polymer is bigger than 3.0 meq/g, and
• the main chain structure of the polymer is selected from the group consisting of vinyl polymers, polyoxyalkylenes, polysiloxanes, polyesters, polyimides, polyamides, polybenzoxazoles, polybenzimidazoles, polyaryleneethers, polyarylenes, polyarylenesulfides, polyetherketones, polyethersulfones, and polyphosphazenes, and copolymers thereof.