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US 7,923,153 B2Granted
Linear ether electrolyte with asymmetric end groups for use in lithium batteries
AssigneeEveready Battery Company, Inc.
InventorWeiwei Huang
Life of this patent
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Abstract
A primary electrochemical cell and electrolyte incorporating a linear asymmetric ether is disclosed. The ether may include EME, used in combination with DIOX and DME, or have the general structural formula R1—O—CH2—CH2—O—R2 or R1—O—CH2—CH(CH3)—O—R2, where a total of at least 7 carbon atoms must be present in the compound, and R1 and R2 consist alkyl, cyclic, aromatic or halogenated groups but cannot be the same group (i.e., R1≠R2).
Claims3
An electrochemical cell comprising:
- a lithium-based anode;
- an iron-disulfide-based cathode;
- and
- an electrolyte consisting essentially of at least one solute dissolved in a solvent blend of 1,3-dioxolane (DIOX), 1,2-dimethoxyethane (DME) and 1-ethoxy-2-methoxyethane (EME), wherein the 1,2-dimethoxyethane (DME) and 1-ethoxy-2-methoxyethane (EME) are each provided as at least 10 vol. % of the solvent blend.
1 more element
Dependencies are inferred from the claim text.