High solubility iron hexacyanides
US-2016276697-A1 · Sep 22, 2016 · US
High solubility iron hexacyanides
US12009562B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12009562-B2 |
| Application number | US-202217727904-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 25, 2022 |
| Priority date | Aug 15, 2012 |
| Publication date | Jun 11, 2024 |
| Grant date | Jun 11, 2024 |
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Abstract
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Stable solutions comprising high concentrations of charged coordination complexes, including iron hexacyanides are described, as are methods of preparing and using same in chemical energy storage systems, including flow battery systems. The use of these compositions allows energy storage densities at levels unavailable by other iron hexacyanide systems.
First claim
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What is claimed: 1. A method, comprising: (a) reacting H 4 [Fe(CN) 6 ] with one or more Na+ and K+-containing basic salts so as to produce an aqueous solution comprising both Na+ and K+ cations and having a concentration of Fe(CN) 6 4− in the aqueous solution that exceeds a concentration of Fe(CN) 6 4− in either a saturated aqueous solution of Na 4 [Fe(CN) 6 ] or a saturated aqueous solution of K 4 [Fe(CN) 6 ] in water at a same temperature as that of the aqueous solution, the one or more Na+/K+-containing basic salts optionally comprising one or more of hydroxide, carbonate, or bicarbonate. 2. The method of claim 1 , wherein the one or more Na+/K+-containing basic salts comprise one or more of hydroxide, carbonate, or bicarbonate. 3. The method of claim 2 , wherein the one or more Na+/K+-containing basic salts comprise hydroxide. 4. The method of claim 2 , wherein the one or more Na+/K+-containing basic salts comprise one or more of carbonate or bicarbonate.
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Classifications
Aqueous electrolytes · CPC title
Fuel cells with aqueous electrolytes · CPC title
Fuel cells · CPC title
Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title
- H01M8/188Primary
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
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- What does patent US12009562B2 cover?
- Stable solutions comprising high concentrations of charged coordination complexes, including iron hexacyanides are described, as are methods of preparing and using same in chemical energy storage systems, including flow battery systems. The use of these compositions allows energy storage densities at levels unavailable by other iron hexacyanide systems.
- Who is the assignee on this patent?
- Lockheed Martin Energy Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M8/188. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 11 2024 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).