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US 8,785,057 B1Granted
Electrolyte solution for capacitors and batteries
AssigneeRetriev Technologies Incorporated
InventorsW. Novis Smith, Joel R. McCloskey, Jonathan Maeyer
Life of this patent
Estimating the term…
Abstract
The present invention provide novel compounds and electrolyte solutions which can be used in capacitors and lithium batteries and which have a liquidus range of from about −65 to about 171 degrees C.
Claims15
An electrolyte solution for low temperature capacitors or lithium batteries comprising a solvent system which is comprised of 35-100% by weight in total of at least one symmetrical or asymmetrical carbonate of the general formula (I):
- RO(C═O)OR1 (I)
- wherein R is selected from the group consisting of methyl, ethyl, isopropyl, propyl, CH3OCH2CH2—, CH3OCH2CH2OCH2CH2—, CH3OCH2CH2OCH2CH2OCH2CH2—, R″OCH2CH2— and R″—O—(CH2)n—, n is 2, 3 or 4, R1 is selected from the group consisting of CH3OCH2CH2—, CH3OCH2CH2OCH2CH2—, CH3OCH2CH2OCH2CH2OCH2CH2—, CH3CH2OCH2CH2— and R″—O—CH2CH2—, and R″ is methyl, ethyl, propyl or isopropyl, and up to 65% by weight in total of at least one solvent which is different from the symmetrical or asymmetrical carbonate of general formula (I), said electrolyte solution additionally comprising at least one conductive salt and having a liquidus range of about −65° C. to about 171° C.
Dependencies are inferred from the claim text.