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Method for producing nickel-containing acid solution
US8974754B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8974754-B2 |
| Application number | US-201113816954-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 22, 2011 |
| Priority date | Aug 3, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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The method for obtaining an acid solution containing nickel is obtained by treating a positive electrode material of a nickel-metal hydride battery. The method includes a water-washing step, wherein a positive electrode material of a nickel-metal hydride battery is water-washed by adding water, and then separated to form a positive electrode material after water-washing and a water-washed slurry. An acid-washing step then is performed, wherein an acid is added and mixed into the positive electrode material obtained after water-washing in the water-washing step, and, separation is performed to form a positive electrode material after acid-washing and an acid-washed slurry. A dissolution step is performed wherein the positive electrode material obtained in the acid-washing step is separated into a nickel solution and a dissolution residue by adding any one of an acid and an oxidizing agent.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a nickel-containing acid solution, comprising: providing a positive electrode material of a nickel-metal hydride battery, the positive electrode material comprising a base material of a nickel metal and a nickel hydroxide that is applied to a surface of the base material; performing a water-washing step by adding water to the positive electrode material of a nickel-metal hydride battery to obtain a positive electrode material a…
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- H01M10/54Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8974754B2 cover?
- The method for obtaining an acid solution containing nickel is obtained by treating a positive electrode material of a nickel-metal hydride battery. The method includes a water-washing step, wherein a positive electrode material of a nickel-metal hydride battery is water-washed by adding water, and then separated to form a positive electrode material after water-washing and a water-washed slurr…
- Who is the assignee on this patent?
- Kikuta Naoko, Asano Satoshi, Takano Masatoshi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01M10/54. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 10 2015 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).