Two-Electron Donating Phenothiazines and Use Thereof
US-2018057471-A1 · Mar 1, 2018 · US
Liquid phenothiazine catholytes for non-aqueous redox flow batteries
US10103402B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10103402-B2 |
| Application number | US-201615366610-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 1, 2016 |
| Priority date | Dec 1, 2015 |
| Publication date | Oct 16, 2018 |
| Grant date | Oct 16, 2018 |
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Abstract
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Highly soluble, liquid phenothiazines containing methoxy-terminated ether and oligoether substituents are disclosed with high diffusion coefficients and robust performance in electrochemical measurements, which can be synthesized in one step from commercially-available starting materials, thereby circumventing previous synthetic limitations.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for a catholyte solution comprising a lithium-containing organic solvent and a phenothiazine derivative with a substituent at the N position, wherein the substituent is an oligoglycol chain, and wherein the phenothiazine derivative is not further substituted by a perfluoroalkyl group. 2. The composition of claim 1 , wherein the oligoglycol chain is branched. 3. The composition of claim 1 , wherein the oligoglycol chain is linear. 4. The composition of claim 1 , further comprising at least a second substituent at the 1, 2, 3, 4, 6, 7, 8 and/or 9 positions, wherein the second substituent is selected from the group consisting of a halogen, an alkoxy group, a carbonyl group, a nitrile group, a nitro group, an alkyl, or combinations thereof. 5. A flow battery comprising a positive electrode resting in the catholyte solution of claim 1 and a negative electrode, wherein the negative electrode and the positive electrode are separated by a membrane.
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Classifications
- H01M8/222Primary
Fuel cells in which the fuel is based on compounds containing nitrogen, e.g. hydrazine, ammonia · CPC title
with carbon atoms directly attached to the ring nitrogen atom · CPC title
Organic electrolyte · CPC title
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
Fuel cells · CPC title
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- What does patent US10103402B2 cover?
- Highly soluble, liquid phenothiazines containing methoxy-terminated ether and oligoether substituents are disclosed with high diffusion coefficients and robust performance in electrochemical measurements, which can be synthesized in one step from commercially-available starting materials, thereby circumventing previous synthetic limitations.
- Who is the assignee on this patent?
- Univ Kentucky Res Found
- What technology area does this patent fall under?
- Primary CPC classification H01M8/222. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 16 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).