Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1991-07-12
1993-12-28
Pal, Asok
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
252 622, H01M 616, H01M 618
Patent
active
052738400
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.
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Covalent Associates Incorporated
Pal Asok
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