The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1993
Filed:
Jul. 12, 1991
Lawrence A Dominey, Lexington, MA (US);
Covalent Associates Incorporated, Woburn, MA (US);
Abstract
Salts for use in nonaqueous electrolytes, and electrolytes and electromical generators including such materials. An exemplary compound for use as an electrolyte in an electrochemical cell has the formula ##STR1## wherein M.sup.n+ is an ion of Li, Na, K, Ca, Mg, Zn, or Al; each of the moieties Y, Y', and Y', are>SO.sub.2 or>CO; the groups R and R' are separate halogenated alkyl groups of 1-4 carbon atoms, respectively or are joined together to constitute a unitary halogenated alkylene radical of from 2-4 carbon atoms linking Y and Y' and forming a ring structure which includes R, R', Y, Y', and the carbon atom to which Y and Y' are attached; the group R' is an alkyl or haloalkyl radical of 1-4 carbon atoms or a halogenated phenyl group; n is an integer of 1-3 depending on the identity of the metal M; and metal ion M.sup.n+ is an ion of Li, Na, Ca, Mg, Zn or Al when each of the Y--R, Y'--R', and Y'--R' groups is SO.sub.2 CF.sub.3. In another exemplary compound, the --Y'--R' group is replaced by Z, which is an electron-withdrawing substituent selected from the group consisting of --C(O)H, --NO.sub.2, --CN, --F, and perfluorinated alkyls and aryls containing no more than 8 carbons.