Process of preparing a chemically pre-formed (cpf) iron negative electrode with oxidizing compounds
US-2018375091-A1 · Dec 27, 2018 · US
Method of preparing iron oxide nanoparticles
US9755231B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9755231-B2 |
| Application number | US-201414248479-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 9, 2014 |
| Priority date | Jan 25, 2013 |
| Publication date | Sep 5, 2017 |
| Grant date | Sep 5, 2017 |
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Abstract
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Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.
First claim
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What is claimed is: 1. A method of preparing oval shaped iron (III) oxide nanoparticles, the method comprising: preparing a ferric chloride (FeCl 3 ) aqueous solution; preparing a sodium hydroxide (NaOH) aqueous solution; obtaining a mixed aqueous solution consisting of the ferric chloride (FeCl 3 ) aqueous solution, the sodium hydroxide (NaOH) aqueous solution, and a sodium sulfate (Na 2 SO 4 ) aqueous solution; reacting the mixed aqueous solution in an electric convection oven in a temperature range of 100° C. to 105° C. for 90 hours to 100 hours at atmospheric pressure to get a solid product; and cooling, washing, and drying the solid product to get a dried product, wherein a concentration of the FeCl 3 aqueous solution is in a range of 2 M to 3 M, a concentration of the NaOH aqueous solution is in a range of 5 M to 6 M, a concentration of the Na 2 SO 4 aqueous solution is in a range of 0.5 M to 1 M, and the dried product consists of iron (III) oxide. 2. The method of claim 1 , wherein a volume ratio of the ferric chloride aqueous solution:the sodium hydroxide aqueous solution:the sodium sulfate aqueous solution is 10:9:x, where x satisfies 0<x<1.
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Classifications
extending in three dimensions · CPC title
- H01M4/521Primary
of iron for aqueous cells · CPC title
Iron electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Submicrometer sized, i.e. from 0.1-1 micrometer · CPC title
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Frequently asked questions
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- What does patent US9755231B2 cover?
- Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/521. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 05 2017 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).