Polymer fuel cell
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsKonstantin Ledjeff, Roland Nolte
Life of this patent
Estimating the term…
Abstract
The invention relates to a fuel cell with a current collector, polymeric solid electrolyte in the form of membranes, gas distributor rings and currents distributor as components, all components being made from a thermoplastic basic polymer soluble in a solvent, and in that this basic polymer is so modified for the individual components that the current collectors (1) are electrically conductive, the membranes (4) are ion-conductive, the current distributors (3) are gas-permeable and electrically conductive, and the gas distributor rings (2) are made of unmodified and/or electrically conductive basic polymer, and in that the components are combined by a bonding process without seals.
Claims20
A fuel cell, comprising components including current collectors, a polymeric solid electrolyte in the form of a membrane, gas distributor rings, and current distributors, said components being composed of a thermoplastic basic polymer soluble in a solvent, said basic polymer being modified for the individual components such that the current collectors are electrically conductive, the membrane is ion-conductive, the current distributors are gas-permeable and electrically conductive, and the gas distributor rings are made of at least one of unmodified basic polymer and electrically conductive basic polymer, and wherein the basic polymer is made from monomer units selected from the group consisting of polysulphones of the general formula I:
- ----SO.sub.2 --R.sub.l --O--R.sub.2 --C(CH.sub.3).sub.2 --R.sub.3 --O--R.sub.4 --!--, (I)
- with
- R.sub.1, R.sub.2, R.sub.3, R.sub.4 .dbd.--C.sub.6 H.sub.4 --, --C.sub.10 H.sub.6 --;
- polyether sulphones of the general formula II:
- ----SO.sub.2 --R.sub.1 --!.sub.n --O--R.sub.2 --!.sub.m !--(II)
- with
- R.sub.1, R.sub.2 .dbd.--C.sub.6 H.sub.4 --, --C.sub.10 H.sub.6 --
- n, m=1 or 2;
- polyether ketones of the general formula III:
- ----CO--R.sub.1 --!.sub.n --O--R.sub.2 --!.sub.m !-- (III)
- with
- R.sub.1, R.sub.2 .dbd.--C.sub.6 H.sub.4 --, --C.sub.10 H.sub.6 --
- n, m=1 or 2;
- and polyphenylsulphides of the general formula IV:
- ----S--R.sub.1 !-- (IV)
- with
- R.sub.1 .dbd.--C.sub.6 H.sub.4 --.
Dependencies are inferred from the claim text.