Composite solid electrolytes for rechargeable energy storage devices

• US 10,559,398 B2
• Filed: 05/15/2017
• Issued: 02/11/2020
• Est. Priority Date: 05/15/2017
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Aetukuri, Naga Phani B., Miller, Robert D., Na, Young-Hye, Scott, John Campbell, Yahyazadeh, Sogol
• Primary Examiner(s): Gatewood, Daniel S
• Application Number:
  US15/594,889
• Publication Number:
  US 20180330844A1
• Time in Patent Office: 1,002 Days
• Field of Search: None
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: C01B 32/158 Carbon nanotubes
• CPC Class Codes: C08F 220/04 Acids; Metal salts or ammonium salts thereof
• CPC Class Codes: C08F 220/283 and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate
• CPC Class Codes: C08F 220/286 and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate
• CPC Class Codes: C08F 222/102 of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
• CPC Class Codes: H01B 1/20 Conductive material dispersed in non-conductive organic material organic macromolecular compounds or compositions C08
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/056 characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 10/4235 Safety or regulating additives or arrangements in electrodes, separators or electrolyte H01M10/4242 takes precedence
• CPC Class Codes: H01M 2300/0045 Room temperature molten salts comprising at least one organic ion
• CPC Class Codes: H01M 2300/0068 inorganic
• CPC Class Codes: H01M 2300/0082 Organic polymers
• CPC Class Codes: H01M 2300/0094 in the form of layered products, e.g. coatings
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A device includes an ion-conducting membrane with ion-conducting ceramic particles, and an ion-conducting polymer that surrounds the ion-conducting membrane. The ion-conducting polymer includes a pressure-deformable film with a glass transition temperature lower than an operation temperature of the device.

Claims

1. A device, comprising:

an ion-conducting membrane comprising ion-conducting ceramic particles in an insulating polymeric binder, wherein at least a portion of the ion-conducting ceramic particles extend from a first major surface of the insulating polymeric binder to an opposed second major surface of the insulating polymeric binder, wherein the ion-conducting ceramic particles in the portion comprise a first part extending above the first major surface of the insulating polymeric binder and a second part extending below the second major surface of the insulating polymeric binder, and wherein the first part and the second part of the ceramic particles are uncovered by the insulating polymeric binder, and

an ion-conducting polymer comprising a pressure-deformable film with a glass transition temperature lower than an operation temperature of the device, wherein the pressure-deformable film has a first major surface and a second major surface opposite the first major surface, and wherein the pressure-deformable film surrounds the ion-conducting membrane such that the first part of the ion-conducting ceramic particles is below the first major surface of the film and the second part of the ion-conducting ceramic particles is below the second major surface of the film.

2. The device of claim 1, wherein the device further comprises a first solid electrode contacting the first major surface of the pressure-deformable film and a second solid electrode contacting the second major surface of the pressure-deformable film.

3. The device of claim 1, wherein the device has a conductivity of at least 10⁻

7 S/cm at room temperature.

4. The device of claim 1, wherein the ion-conducting polymer is chosen from a linear polymer, a crosslinked polymer, a star polymer, a block copolymer, and combinations thereof.

5. The device of claim 4, wherein the ion-conducting polymer further comprises an inorganic filler chosen from carbon nanotubes, POSS compounds, metal oxides, and combinations thereof.

6. The device of claim 5, wherein the ion-conducting polymer further comprises a Li ion releasing compound.

7. The device of claim 5, wherein the ion-conducting polymer further comprises an ionic liquid.

8. The device of claim 1, wherein a thickness of the ion-conducting membrane is between about 0.1 μ

m and about 100 μ

m.

9. The device of claim 1, wherein the insulating polymeric binder is chosen from cyclo-olefin polymers, poly-para-xylylenes, benzocyclobutenes, olefin addition polymers, olefin addition copolymers, ring opening metathesis polymers and reduced forms thereof, acyclic diene metathesis polymers and reduced forms thereof, fluorocarbon addition polymers, fluoroether polymers, cyclobutyl fluoroethers, polyarylenes, polyarylene ethers, polybenzoazoles, polysiloxanes, silsequioxanes, polycarbosilanes, and combinations thereof.