DE13847827T1 - Ionenleitende polymere und polymermischungen für alkalimetallionenbatterien - Google Patents

Ionenleitende polymere und polymermischungen für alkalimetallionenbatterien Download PDF

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DE13847827T1
DE13847827T1 DE13847827.6T DE13847827T DE13847827T1 DE 13847827 T1 DE13847827 T1 DE 13847827T1 DE 13847827 T DE13847827 T DE 13847827T DE 13847827 T1 DE13847827 T1 DE 13847827T1
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peo
salt
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Joseph M. DeSimone
Ashish Pandya
Dominica Wong
Alessandra Vitale
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University of North Carolina at Chapel Hill
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Abstract

Flüssig-Elektrolytzusammensetzung, umfassend: (a) ein homogenes Lösungsmittelsystem, wobei das Lösungsmittelsystem einen Perfluorpolyether (PFPE) und ein Polyethylenoxid (PEO) umfasst; und (b) ein in dem Lösungsmittelsystem gelöstes Alkalimetallsalz.

Claims (29)

  1. Flüssig-Elektrolytzusammensetzung, umfassend: (a) ein homogenes Lösungsmittelsystem, wobei das Lösungsmittelsystem einen Perfluorpolyether (PFPE) und ein Polyethylenoxid (PEO) umfasst; und (b) ein in dem Lösungsmittelsystem gelöstes Alkalimetallsalz.
  2. Zusammensetzung nach Anspruch 1, wobei das Alkalimetallsalz ein Lithiumsalz ist.
  3. Zusammensetzung nach Anspruch 1, wobei das Alkalimetallsalz ein Natriumsalz ist.
  4. Zusammensetzung nach Anspruch 1 bis 3, wobei das Lösungsmittelsystem in der Zusammensetzung in einer Menge von 70 bis 95 Gewichtsprozent eingeschlossen ist; das Salz in der Zusammensetzung in einer Menge von 5 bis 30 Gewichtsprozent eingeschlossen ist; und das PFPE und das PEO in dem Lösungsmittelsystem in einem Gewichtsverhältnis (PFPE:PEO) von 40:60 bis 95:5 eingeschlossen sind.
  5. Zusammensetzung nach Anspruch 1 bis 4, wobei: das PEO ein gewichtsgemitteltes Molekulargewicht von 0,2 bis 4 kg/mol aufweist, und das PFPE ein gewichtsgemitteltes Molekulargewicht von 0,4 bis 20 kg/mol aufweist.
  6. Zusammensetzung nach Anspruch 1 bis 5, wobei das PEO und das PFPE vernetzbar sind.
  7. Zusammensetzung nach Anspruch 1 bis 6, weiterhin umfassend einen Initiator und/oder ein Elektrodenstabilisierungsmittel.
  8. Zusammensetzung nach Anspruch 1 bis 7, wobei die Zusammensetzung im Wesentlichen frei von Carbonat-Lösungsmittel ist.
  9. Zusammensetzung nach Anspruch 1 bis 8, wobei die Zusammensetzung ein Tg zwischen –120°C und –20°C aufweist.
  10. Zusammensetzung nach Anspruch 1 bis 9, wobei die Zusammensetzung sich nicht entzündet, wenn sie auf eine Temperatur von 235°C erhitzt wird und dann mit einer Flamme für 15 Sekunden in einer Kohler-Rapid-Flash-Testapparatur mit offenem Tiegel in Kontakt gebracht wird.
  11. Zusammensetzung nach Anspruch 1 bis 10, wobei die Zusammensetzung eine Ionenleitfähigkeit von 10–4 bis 102 Siemens pro Zentimeter bei 25°C aufweist.
  12. Zusammensetzung nach Anspruch 1 bis 11, wobei die Zusammensetzung ein elektrochemisches Stabilitätsfenster von 3 bis 6 Volt gegenüber Li/Li+ aufweist.
  13. Fest-Elektrolytzusammensetzung für eine Batterie, umfassend: (a) ein festes Polymer, wobei das Polymer ein vernetztes Produkt eines vernetzbaren Perfluorpolyethers (PFPE) und eines vernetzbaren Polyethylenoxids (PEO) umfasst; und (b) ein in dem Polymer gelöstes Alkalimetallionensalz.
  14. Zusammensetzung nach Anspruch 13, wobei das Alkalimetallsalz ein Lithiumsalz ist.
  15. Zusammensetzung nach Anspruch 13, wobei das Alkalimetallsalz ein Natriumsalz ist.
  16. Zusammensetzung nach Anspruch 13 bis 15, wobei die Zusammensetzung in Form eines Films vorliegt.
  17. Zusammensetzung nach Anspruch 13 bis 16, wobei das Polymer amorph ist.
  18. Zusammensetzung nach Anspruch 13 bis 17, wobei: das feste Polymer in der Zusammensetzung in einer Menge von 70 bis 95 Gewichtsprozent eingeschlossen ist; das Salz in der Zusammensetzung in einer Menge von 5 bis 30 Gewichtsprozent eingeschlossen ist; und das PFPE und das PEO in dem festen Polymer in einem Gewichtsverhältnis (PFPE:PEO) von 40:60 bis 95:5 eingeschlossen sind.
  19. Zusammensetzung nach Anspruch 13 bis 18, wobei: das PEO ein gewichtsgemitteltes Molekulargewicht von 0,2 bis 4 kg/mol aufweist, und das PFPE ein gewichtsgemitteltes Molekulargewicht von 0,4 bis 20 kg/mol aufweist.
  20. Zusammensetzung nach Anspruch 13 bis 19, weiterhin aufweisend einen Initiator und/oder ein Elektrodenstabilisierungsmittel.
  21. Zusammensetzung nach Anspruch 13 bis 20, wobei die Zusammensetzung im Wesentlichen frei von Carbonat-Lösungsmittel ist.
  22. Zusammensetzung nach Anspruch 13 bis 21, wobei die Zusammensetzung ein Tg zwischen –120°C und –20°C aufweist.
  23. Zusammensetzung nach Anspruch 13 bis 22, wobei die Zusammensetzung sich nicht entzündet, wenn sie auf eine Temperatur von 235°C erhitzt wird und dann mit einer Flamme für 15 Sekunden in einer Kohler-Rapid-Flash-Testapparatur mit offenem Tiegel in Kontakt gebracht wird.
  24. Zusammensetzung nach Anspruch 13 bis 23, wobei die Zusammensetzung eine Ionenleitfähigkeit von 10–4 bis 102 Siemens pro Zentimeter bei 25°C aufweist.
  25. Zusammensetzung nach Anspruch 13 bis 24, wobei die Zusammensetzung ein elektrochemisches Stabilitätsfenster von 3 bis 6 Volt gegenüber Li/Li+ aufweist.
  26. Batterie, umfassend: (a) eine Anode; (b) eine Kathode; und (c) eine Flüssig- oder Fest-Elektrolytzusammensetzung, die wirkend mit der Anode und Kathode verbunden ist, wobei die Elektrolytzusammensetzung eine Zusammensetzung nach Anspruch i bis 25 ist.
  27. Verfahren zur Herstellung einer Elektrolytzusammensetzung für eine Batterie, umfassend: (a) Kombinieren von Perfluorpolyether (PFPE), Polyethylenoxid (PEO), Alkalimetallsalz und wahlweise einem Photoinitiator, in Abwesenheit von zusätzlichem Lösungsmittel unter Bedingungen, in denen ein Einphasen-Lösungs-Lösungsmittelsystem gebildet wird; und dann wahlweise (b) Vernetzen des PFPE und des PEO zur Bildung eines festen Polymers mit dem darin gelösten Alkalimetallsalz.
  28. Verfahren nach Anspruch 27, wobei das Lösungsmittelsystem in der Zusammensetzung in einer Menge von 70 bis 95 Gewichtsprozent eingeschlossen ist; das Salz in einer Menge von 5 bis 30 Gewichtsprozent eingeschlossen ist; und das PFPE und PEO in dem Lösungsmittelsystem in einem Gewichtsverhältnis (PFPE:PEO) von 40:60 bis 95:5 eingeschlossen sind.
  29. Verfahren nach Anspruch 27 oder 28, wobei das Alkalimetallionensalz ein Lithiumsalz oder Natriumsalz ist.
DE13847827.6T 2012-10-19 2013-10-17 Ionenleitende polymere und polymermischungen für alkalimetallionenbatterien Pending DE13847827T1 (de)

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US201261716253P 2012-10-19 2012-10-19
US201261716253P 2012-10-19
US201361812510P 2013-04-16 2013-04-16
US201361812510P 2013-04-16
PCT/US2013/065396 WO2014062898A1 (en) 2012-10-19 2013-10-17 Ion conducting polymers and polymer blends for alkali metal ion batteries
EP13847827.6A EP2909886A4 (de) 2012-10-19 2013-10-17 Ionenleitende polymere und polymermischungen für alkalimetallionenbatterien

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