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AssigneeHoneycomb Battery Company
InventorBor Z. Jang
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Provided is a polymer hybrid separator for use in a battery, the separator comprising multiple fibers of a first thermally stable polymer (first fibers) and multiple fibers of a second thermally stable polymer (second fibers), which are different in chemical composition or diameter than the first fibers, wherein the first fibers intersect with the second fibers and are bonded by the second fibers at the points of intersection. The thermally stable polymer fibers preferably have a melting point or thermal decomposition temperature higher than 250° C. (preferably >300° C., further preferably >400° C., still further preferably >500° C., and most preferably >600° C.). Also provided are a process for producing such a separator and a lithium or sodium secondary battery comprising a cathode, an anode, such a separator disposed between the cathode and the anode, and an electrolyte.
A polymer hybrid separator for use in a battery, the polymer hybrid separator comprising multiple fibers of a first thermally stable polymer, herein referred to as first fibers, and multiple fibers of a second thermally stable polymer, herein referred to as second fibers, which are different in chemical composition or diameter than the first fibers, wherein the first fibers intersect the second fibers and are bonded to the second fibers at multiple points of intersection and wherein the first thermally stable polymer, the second thermally stable polymer, or both the first and the second thermally stable polymer are selected from the group consisting of polyimide, poly(amic acid), poly(amide imide), poly(ether imide), aromatic polyamide, polysulfone, polyether sulfone, poly(phenylene sulfide), poly(phenylene sulfide sulfone), phenolic resin, polyacrylonitrile, polyoxadiazole, polybenzoxazole, polybenzobisoxazole, polythiazole, polybenzothiazole, polybenzobisthiazole, poly(p-phenylene vinylene), polybenzimidazole, polybenzobisimidazole, polysuccinonitrile, polyquinolines, poly[2,2′-(m-phenylene)-5,5′-bibenzimidazole], poly(arylene ethers), polycarboranes, poly(p-xylylene), poly(phenylene ether), polymers from 1,4,5,8-naphthalenetetracarboxylic acid and aromatic tetraamines, poly(1,3,4-oxadiazoles), poly(1,2,4-oxa-diazoles), poly(1,2,4- and 1,2,5-oxadiazole-N-oxides), polythiadiazoles, polypyromellitimidlnes, poly-1,3,4-thiazidazoie, poly(benzimidazobenzo-phenanthroline) ladders (BBL), poly(imidazoisoquinoline) ladders, polydicyclopentadiene (pDCPD), polyether ether ketone (PEEK), rigid-rod and ladder polymers, sulfonated versions thereof, and combinations thereof and wherein the hybrid separator has a thickness from 50 nm to 300 μm.
Dependencies are inferred from the claim text.