Energy storage device comprising a polyurethane separator
AssigneeLANXESS Solutions US Inc.
InventorsVenkatramanan K. Madabusi, Kevin Jackson, George Brereton
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Abstract
Energy storage devices are improved by incorporating polyurethane separators, which separators comprise polyurethane polymers prepared by curing a polycarbonate based polyurethane prepolymer, which polyurethane polymers often further comprise metal or ammonium salts and are often swelled by an organic solvent.
Claims12
An energy storage device comprising a non-porous, ion permeable separator disposed between an anode region and a cathode region, wherein the separator comprises an ion permeable film formed from a polycarbonate based polyurethane polymer, which polycarbonate based polyurethane polymer is prepared by crosslinking an isocyanate terminated pre-polymer having a polycarbonate backbone with a curing agent comprising a C2-12 diol, methylene dianiline, methylene bis chloroaniline, ethylene bis orthochloroaniline, 4,4′-methylene-bis(3-chloro-2,6-diethyl)aniline, dimethylthio-2,4-toluenediamine, di-p-aminobenzoate, phenyldiethanol amine mixture, or a methylene dianiline sodium chloride complex,
- wherein the anode region comprising an anode chamber, a current collector, which current collector resides within the anode chamber and an anolyte;
- and
- the cathode region comprising a cathode chamber, a current collector, which current collector resides within the cathode chamber, and a catholyte.
Dependencies are inferred from the claim text.