Biodegradable electrochemical device and methods thereof

Patent metadata

Field	Value
Publication number	US-12230756-B2
Application number	US-202217652935-A
Country	US
Kind code	B2
Filing date	Mar 1, 2022
Priority date	Mar 1, 2022
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

An electrochemical device is disclosed, which includes an anode and a cathode. The electrochemical device also includes an extruded electrolyte composition disposed between the anode and the cathode. The cathode and/or the anode of the electrochemical device may be disposed in a stacked geometry or in a lateral x-y plane geometry. The electrolyte composition may include a gel polymer electrolyte. The electrolyte composition is disposed between the anode and the cathode in a laterally non-continuous pattern. A method of producing an electrolyte layer of an electrochemical device is also disclosed.

First claim

What is claimed is:

1. A method of producing an electrolyte layer of an electrochemical device, comprising:
preparing a substrate for an electrochemical device, the substrate comprising polylactic acid (PLA), polylactic-co-glycolic acid (PLGA), silk-fibroin, chitosan, polycaprolactone (PCL), polyhydroxybutyrate (PHB), rice paper, cellulose, polylactide polybutylene succinate (PBS), polybutylene adipate terephthalate (PBAT), or combinations thereof, and the substrate having an electrode;
dispensing an electrolyte composition from an extrusion dispenser onto the substrate and in contact with the electrode; and
curing the electrolyte composition; and wherein the electrolyte composition comprises:
a photoinitiator comprising lithium phenyl-2,4,6-trimethylbenzophoosphinate.

2. The method of producing an electrolyte layer of an electrochemical device of claim 1 , wherein the electrolyte composition comprises a gel polymer electrolyte, comprising a hydrogel of a copolymer and a salt dispersed in the hydrogel of a copolymer.

3. The method of producing an electrolyte layer of an electrochemical device of claim 1 , wherein the electrolyte composition comprises a diluent to adjust a viscosity of the electrolyte composition.

4. The method of producing an electrolyte layer of an electrochemical device of claim 1 , further comprising mixing the electrolyte composition prior to dispensing electrolyte composition.

5. The method of producing an electrolyte layer of an electrochemical device of claim 1 , wherein the electrolyte composition is dispensed according to a specific pattern.

6. The method of producing an electrolyte layer of an electrochemical device of claim 1 , further comprising pausing to allow the electrolyte composition to coalesce under ambient conditions after dispensing.

7. The method of producing an electrolyte layer of an electrochemical device of claim 1 , wherein curing comprises subjecting the electrolyte composition to ultraviolet radiation.

Assignees

• Xerox Corp

Inventors

• Chopra Naveen
• Mcguire Gregory
• Zwartz Edward G
• Hu Nan-Xing

Classifications

• H01M2300/0091

  in the form of mixtures · CPC title

• H01M2300/0085

  Immobilising or gelification of electrolyte · CPC title

• H01M4/622

  being polymers · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• H01M2300/0002

  Aqueous electrolytes · CPC title