ELECTROLYTE COMPOSITION FOR LITHIUM METAL BATTERIES

The present invention relates to an electrolyte composition for lithium metal batteries, comprising a) at least one fluorinated di-ether containing from 4 to 10 carbon atoms, represented by Formula (I) of R1-O-R2-O-R3, wherein each R1 and R3 is independently a fluorinated alkyl group, and R2 is an o...

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Bibliographische Detailangaben
Hauptverfasser:	CHOI, Ji-Ae, LEE, So-Young, MÜLLER, Guillaume, HOUGH, Lawrence Alan, TORTELLI, Vito, GALIMBERTI, Marco, CHOI, Hee-Sung
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The present invention relates to an electrolyte composition for lithium metal batteries, comprising a) at least one fluorinated di-ether containing from 4 to 10 carbon atoms, represented by Formula (I) of R1-O-R2-O-R3, wherein each R1 and R3 is independently a fluorinated alkyl group, and R2 is an optionally fluorinated alkyl group, represented by Formula (II) of CaFbHc, wherein a is an integer from 1 to 6, b+c is an integer from 2 to 10, and if b is 0, R1 and R3 independently have no H; b) at least one non-fluorinated ether; and c) at least one lithium salt, wherein a) the fluorinated di-ether is in an amount of at least 50% by volume (vol %), based on the total volume of a) the fluorinated di-ether and b) the non-fluorinated ether. The present invention also relates to a lithium metal battery comprising a negative electrode comprising lithium metal; a positive electrode; a separator; and an electrolyte composition according to the present invention.