Polyelectrolyte membranes as separator for battery and fuel cell applications
First Claim
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1. A membrane for an electrochemical cell comprising:
- at least one pair of oppositely charged membranes including a polyanion membrane and adjacent a polycation membrane, wherein electrical double layers are formed at the interface of the polyanion and polycation membranes.
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Abstract
Herein provided are polyelectrolyte membranes that block dendrite growth in rechargeable batteries, possess low inherent electrical resistance to be used as separators, possess high ionic conductivities, and block fuel crossover in direct fuel feeding fuel cells. Further provided are cost-effective processes for forming polyelectrolyte membranes. The herein described polyelectrolyte membranes are useful in electrochemical cells such as primary batteries, secondary batteries such as Ag—Zn, Ni—Zn, Ni-MH, Li polymer, and Li-ion; fuel cells including but not limited to metal air battery or fuel cells, proton exchange membrane hydrogen fuel cells, direct liquid feed fuel cell.
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16 Claims
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1. A membrane for an electrochemical cell comprising:
at least one pair of oppositely charged membranes including a polyanion membrane and adjacent a polycation membrane, wherein electrical double layers are formed at the interface of the polyanion and polycation membranes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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