Use of certain polymers as a charge store
View Patent ↗The present invention relates to polymers and to the use thereof in the form of active electrode material or in an electrode slurry as electrical charge storage means, the electrical charge storage means especially being secondary batteries. The secondary batteries are especially notable for high cell voltages, a small drop in capacity even on undergoing several charging and discharging cycles, and simple and scalable processing and production methods (for example by means of screen printing).
1. A polymer comprising
mutually linked repeat units of the chemical structure (I), wherein the number of repeat units of the chemical structure (I) in the polymer is from 4 to 5000, or
mutually linked repeat units of the chemical structure (II), wherein the number of repeat units of the chemical structure (II) in the polymer is from 4 to 5000:
wherein
m 1 , m 2 , m 3 are each independently an integer of from 0 to 5000,
the repeat units of the chemical structure (I) within the polymer are the same or different from one another,
the repeat units of the chemical structure (II) within the polymer are the same or different from one another,
the repeat units of the chemical structure (I) within the polymer are joined to one another in such a way that the bond identified by “# #” in a particular repeat unit is joined by the bond identified by “#” in the adjacent repeat unit and the bond identified by “§ § ” in a particular repeat unit is joined by the bond identified by “§ ” in the adjacent repeat unit,
the repeat units of the chemical structure (II) within the polymer are joined to one another in such a way that the bond identified by “*” in a particular repeat unit is joined by the bond identified by “**” in the adjacent repeat unit,
the R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 23 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 , R 30 radicals are each independently selected from the group consisting of hydrogen, and alkyl group having 1 to 8 carbon atoms,
R 22 is an alkyl group having 1 to 8 carbon atoms,
the R 11 , R 13 , R 15 , R 17 radicals are also each optionally independently a group of the structure (III):
wherein the R 31 , R 32 , R 34 , R 35 radicals are each independently selected from the group consisting of hydrogen, and alkyl group having 1 to 8 carbon atoms,
R 33 is an alkyl group having 1 to 8 carbon atoms,
R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 24 , R 25 , R 26 , R 27 , R 28 , R 29 , R 30 are each also optionally selected from the group consisting of nitro group, —CN, —F, —Cl, —Br, —I, and —O—R 40 wherein R 40 is an alkyl group having 1 to 8 carbon atoms, and
B 1 , B 2 , B 3 , B 4 are independently selected from the group consisting of
direct bond, and
&-(O) p1 —[C═O] p2 —(O) p3 -B 5 -&&, and
wherein p1, p2, p3 are each 0 or 1, with the proviso that it is not simultaneously true that p1=p3=1 and p2=0, and
B 5 is an alkylene group having 1 to 30 carbon atoms.
2. The polymer according to claim 1 ,
wherein
R 1 ═R 3 ,
R 2 ═R 4 ,
R 19 ═R 21 ,
R 20 ═R 23 ,
R 31 ═R 34 , and
R 32 ═R 35 .
3. The polymer according to claim 2 , wherein
R 1 ═R 3 ═H,
R 2 ═R 4 =alkyl group having 1 to 8 carbon atoms,
R 19 ═R 21 ═H, R 20 ═R 23 =alkyl group having 1 to 8 carbon atoms,
R 31 ═R 34 ═H,
R 32 ═R 35 =alkyl group having 1 to 8 carbon atoms and
B 1 , B 2 , B 3 , B 4 are each independently selected from the group consisting of direct bond, methylene, ethylene, n-propylene, and &-B 5 —CH 2 -&&, and
B 5 =1, 4-phenylene.
4. The polymer according to claim 3 , wherein
R 1 ═R 3 ═H,
R 2 ═R 4 =alkyl group having 1 to 6 carbon atoms,
R 19 ═R 21 ═H,
R 20 ═R 23 =alkyl group having 1 to 6 carbon atoms,
R 31 ═R 34 ═H, and
R 32 ═R 35 =alkyl group having 1 to 6 carbon atoms.
5. The polymer according to claim 4 , wherein
R 1 ═R 3 ═H,
R 2 ═R 4 =tert-butyl group,
R 19 ═R 21 ═H,
R 20 ═R 23 =tert-butyl group,
R 31 ═R 34 ═H, and
R 32 ═R 35 =tert-butyl group.
6. An electrical charge storage, comprising:
a redox-active electrode material which comprises the polymer according to claim 1 .
7. An electrical charge storage, the comprising:
a redox-active electrode material made from an electrode slurry which comprises the polymer according to claim 1 .