Electrolyte composition for an anode-free metal battery cell
AssigneeBelenos Clean Power Holding AG
InventorYoann Mettan
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Abstract
An electrolyte composition for an anode-free metal battery cell, wherein the metal is an alkali metal, an alkaline earth metal, or a metal of Group IIIa of the periodic table, including a first solvent, a salt of the alkali metal, the alkaline earth metal or the metal of Group IIIa of the periodic table, the salt being soluble in the first solvent, and an additive. The concentration of the salt in the electrolyte is between 2 M and 3 M, and the additive is a perfluorinated organic compound including at least one halogen atom. The halogen is chlorine, bromine or iodine. An anode-free metal battery cell can include the electrolyte composition.
Claims11
An electrolyte composition for an anode-free metal battery cell, comprising:
- a first solvent, selected from the group consisting of alkyl esters of carbonates, ethers, nitriles, sulfones, sulfoxides, esters and ionic liquids;
- optionally, a second solvent selected from the group consisting of a hydrofluoroether, a partially fluorinated alkyl ether and a combination thereof:
- a salt of an alkali metal, an alkaline earth metal or a metal of Group IIIa of the periodic table, wherein the salt is soluble in the first solvent, and
- a perfluorinated organic compound of Formula I
- wherein
- X is Cl, Br or I,
- Y is Cl, Br or I,
- x is between 0 and 10, and
- y is between 1 and 3,
- wherein
- the concentration of the salt in the electrolyte is between 2 M and 3 M,
- the metal of the anode-free metal battery cell is an alkali metal, an alkaline earth metal or a metal of Group IIIa of the periodic table, and
- when the second solvent is present, the % by weight of the second solvent is from 2% by weight to 30% by weight of the electrolyte composition.
Dependencies are inferred from the claim text.