US4279976A
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Pseudohalide-containing salts for electrolytes of alkali-metal electrochemical devices
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-07-07
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Granted: 1981-07-21
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Expires: 2000-07-07
Abstract
Abstract A class of electrolytes for alkali-metal electro-chemical devices is featured, which contains at least one complex anion salt in an organic solvent. The complex anion salt has the general formula: ZMRxQy wherein Z is an alkali metal; wherein M is B, P, As, and Al; wherein R is selected from a group consisting of heteroatom-containing groups bonded to the core element M through the heteroatom site, aryls, alkaryls, F, Cl, Br, fluorine substituted aryls, and fluorine substituted alkaryls; wherein Q is selected from a group consisting of SCN-, SeCN-, CN- and OCN-; and wherein x and y are integers, the sum of x and y is equal to one plus the valence of M, and further wherein x can be zero.
Inventors
- 👤 Lawrence P. Klemann
- 👤 Gerald H. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M6/162; H01M6/166
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
161 words
An electrolyte for an alkali-metal electrochemical device, comprising: (a) an organic solvent selected from a group consisting of ethers, esters, sulfones, organic sulfites, organic sulfates, organic nitrites and organic nitro compounds; and (b) at least one electrolytically active alkali-metal complex anion salt having the formula: ZMR.sub.x Q.sub.y wherein Z is an alkali metal; wherein M is an element selected from a group consisting of B, Al, P and As; wherein Q is at least one pseudohalide selected from a group consisting of: SCN - , SeCN - , CN - and OCN - ; wherein R is selected from a group consisting of: heteroatom-containing groups bonded to M, the core element, through the heteroatom site, aryls, alkaryls, F, Cl, Br, fluorine-substituted aryls, and fluorine-substituted alkaryls; and wherein x and y are positive integers, a sum of x plus y being equal to one plus the valence of the core element M, and further, wherein x is zero or a positive integer.
Claim 2
Dependent Claim
161 words
An electrolyte for an alkali-metal electrochemical device, comprising: (a) an organic solvent selected from a group consisting of ethers, esters, sulfones, organic sulfites, organic sulfates, organic nitrites and organic nitro compounds; and (b) at least one electrolytically active alkali-metal complex anion salt having the formula: ZMR.sub.x Q.sub.y wherein Z is an alkali metal; wherein M is an element selected from a group consisting of B, Al, P and As; wherein Q is at least one pseudohalide selected from a group consisting of: SCN - , SeCN - , CN - and OCN - ; wherein R is selected from a group consisting of: heteroatom-containing groups bonded to M, the core element, through the heteroatom site, aryls, alkaryls, F, Cl, Br, fluorine-substituted aryls, and fluorine-substituted alkaryls; and wherein x and y are positive integers, a sum of x plus y being equal to one plus the valence of the core element M, and further, wherein x is zero or a positive integer.
Claim 3
Dependent Claim
13 words
The electrolyte of claim 1, wherein said solvent comprises at least one ether.
Claim 4
Dependent Claim
12 words
The electrolyte of claim 2, wherein one of said ethers is dioxolane.
Claim 5
Dependent Claim
12 words
The electrolyte of claim 3, wherein said dioxolane is mixed with dimethoxyethane.
Claim 6
Dependent Claim
18 words
The electrolyte of claim 1, wherein Z is selected from a group consisting of Li, Na and K.
Claim 7
Dependent Claim
9 words
The electrolyte of claim 5, wherein Z is Li.
Claim 8
Dependent Claim
9 words
The electrolyte of claim 1, wherein M is B.
Claim 9
Dependent Claim
31 words
The electrolyte of claim 1, wherein the heteroatom-containing groups defined by R are selected from a group consisting of: ##STR6## where X' is an alkyl having 1 to 3 carbon atoms.
Claim 10
Dependent Claim
14 words
The electrolyte of claim 8, wherein the heteroatom-containing groups defined by R are ##STR7##
Claim 11
Dependent Claim
22 words
The electrolyte of claim 1, wherein the alkali-metal electrochemical device is a lithium battery cell having a solid electrode for a cathode.
Claim 12
Dependent Claim
15 words
The electrolyte of claim 1, wherein the alkali-metal electrochemical device is a Li/TiS 2 battery.
Claim 13
Dependent Claim
16 words
The electrolyte of claim 1, wherein an aryl as defined by R is a phenyl radical.
Claim 14
Dependent Claim
17 words
The electrolyte of claim 1, wherein a fluorine-substituted aryl as defined by R is a para-fluorophenyl radical.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |