Compositions and methods for improving the cumulative capacity of solid, secondary electrolytic cells
First Claim
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1. A solid, single-phase, solvent-containing electrolyte which comprises:
- a solid polymeric matrix;
LiPF6 ; and
a solvent comprising about a 10;
1 to 1;
2 weight ratio of an organic carbonate and a triglyme represented by Formula I;
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 I where R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo;
R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms; and
where the solid electrolyte does not include a separator.
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Abstract
This invention is directed to solid electrolytes containing a solvent and, in particular, a solvent comprising a mixture of an organic carbonate and triglyme as well as electrolytic cells prepared from such solid electrolytes. The electrolyte also contains an inorganic ion salt, preferably an alkali metal salt, and most preferably LiPF6.
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Citations
36 Claims
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1. A solid, single-phase, solvent-containing electrolyte which comprises:
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a solid polymeric matrix; LiPF6 ; and a solvent comprising about a 10;
1 to 1;
2 weight ratio of an organic carbonate and a triglyme represented by Formula I;
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 Iwhere R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo; R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms; and
where the solid electrolyte does not include a separator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A solid, secondary electrolytic cell which comprises:
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an anode containing a compatible anodic material; a cathode containing a compatible cathodic material; and interposed therebetween a solid, solvent-containing electrolyte which comprises; a solid polymeric matrix; LiPF6 ; and a solvent comprising about a 10;
1 to 1;
2 weight ratio of an organic carbonate and a triglyme represented by Formula I;
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 Iwhere R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo; R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms; and
where the solid electrolyte does not include a separator. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A solid, secondary electrolytic cell which comprises:
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an anode containing a compatible anodic material; a cathode containing a compatible cathodic material; and interposed therebetween a solid, single-phase solvent-containing electrolyte which comprises; a solid polymeric matrix; LiPF6 ; and a solvent comprising about a 10;
1 to 1;
2 weight ratio of an aliphatic carbonate and a triglyme wherein the aliphatic carbonate is represented by the formulae;
space="preserve" listing-type="equation">R.sub.13 [OC(O)].sub.n OR.sub.14 and R.sub.13 [OC(O)R.sub.15 ].sub.p OC(O)R.sub.14where each R13 and R14 are independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms;
R15 is an alkylene group of from 2 to 4 carbon atoms;
n is an integer of from 1 to 2, and p is an integer from 1 to 4 and the triglyme is represented by the Formula I
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 Iwhere R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo; R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms; and
where the solid electrolyte does not include a separator. - View Dependent Claims (28)
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29. A solid, single-phase, solvent-containing electrolyte which comprises:
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a solid polymeric matrix; LiPF6 ; and a solvent comprising about a 10;
1 to 1;
2 weight ratio of an aliphatic carbonate and a triglyme wherein the aliphatic carbonate is represented by the formulae;
space="preserve" listing-type="equation">R.sub.13 [OC(O)].sub.n OR.sub.14 and R.sub.13 [OC(O)R.sub.15 ].sub.p OC(O)R.sub.14where each R13 and R14 are independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms;
R15 is an alkylene group of from 2 to 4 carbon atoms;
n is an integer of from 1 to 2, and p is an integer from 1 to 4 and the triglyme is represented by the Formula I
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 Iwhere R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo; R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms; and
where the solid electrolyte does not include a separator. - View Dependent Claims (30)
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31. A method for enhancing the cumulative capacity of a solid, secondary electrolytic cell comprising an anode containing a compatible anodic material, a cathode containing a compatible cathodic material;
- and interposed therebetween a solid, solvent-containing electrolyte which method comprises;
(a) selecting a solid, single-phase solvent-containing electrolyte which comprises; a solid polymeric matrix; LiPF6 ; and a solvent comprising about a 10;
1 to 1;
2 weight ratio of an organic carbonate and a triglyme represented by Formula I;
space="preserve" listing-type="equation">RO(R.sub.1 O).sub.3 R.sub.2 Iwhere R and R2 are independently selected from the group consisting of alkyl of from 1 to 6 carbon atoms, phenyl, alkphenyl of from 7 to 12 carbon atoms, and phenyl substituted with 1 to 3 substituents selected from the group consisting of alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, chloro and bromo; R1 is --(CR3 R4 CR5 R6)-- where R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and alkyl of from 1 to 4 carbon atoms where the solid electrolyte does not include a separator; and (b) incorporating the solid, single-phase solvent-containing electrolyte into the electrolytic cell. - View Dependent Claims (32, 33, 34, 35, 36)
- and interposed therebetween a solid, solvent-containing electrolyte which method comprises;
Specification