# US 5,346,787 A · Allyl carbonate polymer solid electrolytes

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- Number: US 5,346,787 A
- Document ID: US5346787A
- Status: Granted
- Kind: A
- Application number: 08/049,213
- Filed: 1993-04-19
- Granted: 1994-09-13
- Earliest claimed: 1993-04-19
- Assignees: Valence Technology, Inc.
- Inventors: Benjamin Chaloner-Gill
- Web page: https://patentgrep.com/patent/US5346787A

## CPC

- H01M 6/181: {with polymeric electrolytes}
- C08K 3/30: Sulfur-, selenium- or tellurium-containing compounds
- C08K 3/32: Phosphorus-containing compounds
- Y10T 29/49108: Electric battery cell making
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

This invention is directed to novel allyl carbonates and to solid electrolytes containing a solid matrix having incorporated therein allyl carbonates. The solid matrix is used in an electrolytic cell.

## Claims

### Claim 1

A single phase, solid, solvent- containing electrolyte which comprises:
a solid polymeric matrix;
an inorganic ion salt; and
a solvent;
wherein said solid polymeric matrix is obtained by polymerizing an allyl carbonate monomer represented by Formula I:
CH.sub.2 .dbd.CHCH.sub.2 R I
where R is selected from the group consisting of aliphatic carbonates having the Formulae II and III:
--[OC(O)].sub.a OR.sub.1 II
and
[OC(O)OR.sub.2 ].sub.b OC(O)OR.sub.1 III
where R.sub.1 is independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms, and allyl, R.sub.2 is an alkylene group of 2 to 4 carbon atoms, a is an integer of 1 or 2, and b is an integer from 1 to 4.

### Claim 2 (depends on 1)

An electrolyte according to claim 1, wherein the allyl carbonate monomer is allyl methyl carbonate.

### Claim 3 (depends on 1)

An electrolyte according to claim 1, wherein the inorganic ion salt is LiAsF.sub.6.

### Claim 4 (depends on 1)

An electrolyte according to claim 1, wherein the inorganic ion salt is LiPF6.

### Claim 5 (depends on 1)

An electrolyte according to claim 1, wherein the solid polymeric matrix comprises repeating units of urethane acrylate and allyl methyl carbonate.

### Claim 6

An electrolytic cell which comprises:
an anode
a cathode; and
interposed therebetween a single phase, solid, solvent-containing electrolyte which comprises:
a solid polymeric matrix;
an inorganic ion salt; and
a solvent
wherein said solid polymeric matrix is obtained by polymerizing an organic monomer represented by Formula I:
CH.sub.2 .dbd.CHCH.sub.2 R I
where R is selected from the group consisting of aliphatic carbonates having the Formulae II and III
--[OC(O)].sub.a OR.sub.1 II
and
[OC(O)OR.sub.2 ].sub.b OC(O)OR.sub.1 III
where each R.sub.l is independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms, and allyl, R.sub.2 is an alkylene group of 2 to 4 carbon atoms, a is an integer of 1 or 2, and b is an integer from 1 to 4.

### Claim 7 (depends on 6)

An electrolytic cell according to claim 6, wherein the allyl carbonate monomer comprises allyl methyl carbonate.

### Claim 8 (depends on 6)

An electrolytic cell according to claim 6, wherein the inorganic ion salt is LiAsF.sub.6.

### Claim 9 (depends on 6)

An electrolytic cell according to claim 6, wherein the inorganic ion salt is LiPF.sub.6.

### Claim 10 (depends on 6)

An electrolytic cell according to claim 6, wherein the solid polymeric matrix comprises repeating units of urethane acrylate and allyl methyl carbonate.

### Claim 11

A method for producing an electrolytic cell comprising the steps of:
(a) selecting an anode;
(b) selecting a cathode having a,
(c) subjecting to polymerization conditions a mixture comprising an allyl carbonate represented by Formula I, an inorganic ion salt, and a solvent to form a single-phase, solid, solvent-containing electrolyte; and
(d) interposing said electrolyte between said anode and said cathode;
wherein Formula I is
CH.sub.2 .dbd.CHCH.sub.2 R I
where R is selected from the group consisting of aliphatic carbonates having the Formulae II and III,
--[OC(O)].sub.a OR.sub.1 II
and
--[OC(O)OR.sub.2 ].sub.b OC(O)OR.sub.1 III
where R.sub.1 is independently selected from the group consisting of alkyl of from 1 to 4 carbon atoms, and allyl, R.sub.2 is an alkylene group of 2 to 4 carbon atoms, a is 1 or 2, and b is an integer from 1 to 4.

### Claim 12 (depends on 11)

A method according to claim 11, wherein the allyl carbonate monomer comprises allyl methyl carbonate.

### Claim 13 (depends on 11)

A method according to claim 11, wherein the inorganic ion salt is LiAsF.sub.6.

### Claim 14 (depends on 11)

A method according to claim 11, wherein the inorganic ion salt is LiPF.sub.6.

### Claim 15 (depends on 11)

A method according to claim 11, wherein the solid polymeric matrix comprises repeating units of urethane acrylate and allyl methyl carbonate.

### Claim 16 (depends on 11)

A method according to claim 11, wherein the repeating units formed from the allyl carbonate monomer comprises less than about 30 weight percent of the electrolyte.

### Claim 17 (depends on 11)

A method according to claim 11, wherein repeating units formed from the allyl carbonate comprise from about 15 to about 25 weight percent of the electrolyte.