Patent ID: 7785750

Claim:
A solid alkaline fuel cell comprising a fuel and an anion exchange membrane which comprises a support polymer and groups of formula (I) —SO 2 —NR 1 -Q + (I) covalently bonded to the support polymer, wherein Q+ is a group comprising at least one quaternized nitrogen atom, and R 1 is H or a C 1-20 alkyl group, or forms a ring together with a group in Q + , wherein the ring contains 2 to 10 carbon atoms and 1 to 4 heteroatoms, wherein said fuel is an alcohol, and wherein the group of formula (I) has the following structure: wherein Y is CR 7 R 8 wherein R 7 and R 8 independently are a halogen atom or a C 1-20 alkyl group, R 1 is H or a C 1-20 alkyl group, or forms a ring together with one of R 2 or R 5 , wherein the ring contains 2 to 10 carbon atoms and 1 to 4 heteroatoms, R 2 is a C 1-20 alkyl group or forms a ring together with one of R 1 , R 3 , R 5 , R 7 or R 9 , wherein the ring contains 2 to 10 carbon atoms and 1 to 4 heteroatoms, R 3 is a C 1-20 alkyl group or forms a ring together with one of R 2 , R 6 , R 8 or R 10 , wherein the ring contains 2 to 10 carbon atoms and 1 to 4 heteroatoms, R 4 is a C 1-20 alkyl group, R 5 is H, a halogen atom or a C 1-20 alkyl group, or forms a ring together with one of R 1 , R 2 , R 7 or R 9 , wherein the ring contains 2 to 10 carbon atoms and optionally 1 to 4 heteroatoms, R 6 is H, a halogen atom or a C 1-20 alkyl group, or forms a ring together with one of R 3 , R 8 or R 10 , wherein the ring contains 2 to 10 carbon atoms and optionally 1 to 4 heteroatoms, each R 9 is independently H, a halogen atom or a C 1-20 alkyl group, or forms a ring together with one of R 2 or R 5 , wherein the ring contains 2 to 10 carbon atoms and optionally 1 to 4 heteroatoms, each R 10 is independently H, a halogen atom or a C 1-20 alkyl group, or forms a ring together with one of R 3 or R 6 , wherein the ring contains 2 to 10 carbon atoms and optionally 1 to 4 heteroatoms, n is an integer from 0 to 4, and wherein the ring structures in the group of formula (II) can be bridged by C 1-4 alkylene groups.