Non-aqueous electrolytic solution, and non-aqueous electrolyte cell comprising it
First Claim
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1. A non-aqueous electrolytic solution comprising a siloxane derivative of the following chemical formula 1, and at least one alkali metal salt:
- ##STR10## wherein a represents an integer of from 1 to 50;
b represents an integer of from 1 to 20;
m represents an integer of from 0 to 40;
n represents an integer of from 0 to 40;
R represents a hydrogen atom, or an optionally-substituted alkyl group;
provided that when b>
1, a plural number b of D'"'"'s may be the same or different ones.
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Abstract
Disclosed is a non-aqueous electrolytic solution comprising a specific siloxane derivative of the following chemical formula 1 or 2, and at least one light metal salt such as an alkali metal salt: ##STR1## Also disclosed is a non-aqueous electrolyte cell comprising the electrolytic solution. The electrolytic solution has good chemical and thermochemical stability, and the cell comprising it has high safety, and has good cell capabilities even at high voltage.
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19 Claims
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1. A non-aqueous electrolytic solution comprising a siloxane derivative of the following chemical formula 1, and at least one alkali metal salt:
- ##STR10## wherein a represents an integer of from 1 to 50;
b represents an integer of from 1 to 20;
m represents an integer of from 0 to 40;
n represents an integer of from 0 to 40;
R represents a hydrogen atom, or an optionally-substituted alkyl group;
provided that when b>
1, a plural number b of D'"'"'s may be the same or different ones. - View Dependent Claims (2, 3, 4, 5)
- ##STR10## wherein a represents an integer of from 1 to 50;
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6. A non-aqueous electrolyte cell comprising a positive electrode of an oxide or a sulfide capable of being doped/dedoped with a lithium ion, a negative electrode of a carbon material capable of being doped/dedoped with a lithium metal, a lithium alloy or an lithium ion, and a non-aqueous electrolytic solution, wherein;
said non-aqueous electrolytic solution comprises a siloxane derivative of the following chemical formula 2, and at least one lithium metal salt;
##STR11## wherein a represents an integer of from 1 to 50;
b represents an integer of from 1 to 20;
m represents an integer of from 0 to 40;
n represents an integer of from 0 to 40;
R represents a hydrogen atom, or an optionally-substituted alkyl group;
provided that when b>
1, a plural number b of D'"'"'s may be the same or different ones.- View Dependent Claims (7, 8, 9)
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10. A non-aqueous electrolytic solution comprising a siloxane derivative of the following chemical formula 3, and at least one light metal salt:
- ##STR12## wherein a represents an integer of from 1 to 50;
m represents an integer of from 0 to 40;
n represents an integer of from 0 to 40;
R represents a hydrogen atom or an alkyl group;
provided that when a>
1, a plural number a of D"s may be the same or different ones; and
hydrogens in D" and R may be optionally substituted with halogen atoms. - View Dependent Claims (11, 12, 13, 14)
- ##STR12## wherein a represents an integer of from 1 to 50;
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15. A cell comprising;
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a positive electrode, a negative electrode, a separator disposed between said positive electrode and negative electrode, and a non-aqueous electrolytic solution comprising a siloxane derivative of the following chemical formula 4, and at least one light metal salt;
##STR13## wherein a represents an integer of from 1 to 50;
m represents an integer of from 0 to 40;
n represents an integer of from 0 to 40;
R represents a hydrogen atom or an alkyl group;
provided that when a>
1, a plural number a of D"s may be the same or different ones; and
hydrogens in D" and R may be optionally substituted with halogen atoms. - View Dependent Claims (16, 17, 18, 19)
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Specification