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US-2021119210-A1 · Apr 22, 2021 · US
Biodegradable electrochemical device
US2022173433A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022173433-A1 |
| Application number | US-202217651709-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 18, 2022 |
| Priority date | Aug 20, 2019 |
| Publication date | Jun 2, 2022 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A biodegradable solid aqueous electrolyte composition, an electrochemical device incorporating the electrolyte composition, and methods for the same are provided. The electrolyte composition may include a rubber-like hydrogel including a copolymer and a salt. The copolymer may include at least two polycaprolactone chains coupled with a polymeric center block. The polymeric center block may include polyvinyl alcohol. The hydrogel may be biodegradable. The electrochemical device may include an anode, a cathode, and the electrolyte composition disposed between the anode and the cathode.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electrolyte composition, comprising a rubber-like hydrogel including a copolymer and a salt, wherein the copolymer comprises at least two polycaprolactone chains attached to a polymeric center block, wherein the polymeric center block comprises polyvinyl alcohol, and wherein the hydrogel is biodegradable. 2 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of less than about 80%. 3 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of from about 30% to less than about 80%. 4 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of from about 60% to less than about 80%. 5 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of from about 60% to about 75%. 6 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of about 75%. 7 . The electrolyte composition of claim 1 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.2:1 to about 1:1. 8 . The electrolyte composition of claim 1 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.25:1 to about 0.75:1. 9 . The electrolyte composition of claim 1 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.3:1 to about 0.7:1. 10 . The electrolyte composition of claim 1 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of less than about 80%, and wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.2:1 to about 1:1. 11 . The electrolyte composition of claim 10 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of from about 30% to less than 80%. 12 . The electrolyte composition of claim 10 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.25:1 to about 0.75:1. 13 . The electrolyte composition of claim 1 , wherein the copolymer comprises caprolactone in an amount of from about 5 wt % to about 20 wt %. 14 . The electrolyte composition of claim 1 , wherein the copolymer comprises caprolactone in an amount of from about 8 wt % to about 20 wt %. 15 . An electrochemical device, comprising: an anode; a cathode; and an electrolyte composition disposed between the anode and the cathode, wherein the electrolyte composition comprises a rubber-like hydrogel including a copolymer and a salt, wherein the copolymer comprises at least two polycaprolactone chains attached to a polymeric center block, wherein the polymeric center block comprises polyvinyl alcohol, and wherein the hydrogel is biodegradable. 16 . The electrochemical device of claim 15 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of less than about 80%. 17 . The electrolyte composition of claim 15 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of from about 60% to less than about 80%. 18 . The electrolyte composition of claim 15 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.2:1 to about 1:1. 19 . The electrolyte composition of claim 15 , wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.25:1 to about 0.75:1. 20 . The electrolyte composition of claim 15 , wherein the polyvinyl alcohol comprises a degree of hydrolysis of less than about 80%, and wherein the copolymer comprises a mole ratio of caprolactone to polyvinyl alcohol of from about 0.2:1 to about 1:1.
Assignees
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Classifications
being polymers · CPC title
Positive electrodes · CPC title
Negative electrodes · CPC title
Electrodes based on metals, Si or alloys · CPC title
Aqueous electrolytes · CPC title
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Frequently asked questions
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- What does patent US2022173433A1 cover?
- A biodegradable solid aqueous electrolyte composition, an electrochemical device incorporating the electrolyte composition, and methods for the same are provided. The electrolyte composition may include a rubber-like hydrogel including a copolymer and a salt. The copolymer may include at least two polycaprolactone chains coupled with a polymeric center block. The polymeric center block may incl…
- Who is the assignee on this patent?
- Xerox Corp, Nat Res Council Canada
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0565. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 02 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).