Ultra-high purity zinc bromides and quaternary ammonium bromides for use in zinc-bromine batteries

US8992882B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8992882-B2
Application numberUS-52873808-A
CountryUS
Kind codeB2
Filing dateFeb 13, 2008
Priority dateMar 2, 2007
Publication dateMar 31, 2015
Grant dateMar 31, 2015

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Abstract

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Ultra-high purity zinc bromide and quaternary ammonium bromides suitable for use in zinc-bromine batteries, and methods for making same, are provided.

First claim

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We claim: 1. A method consisting essentially of combining elemental bromine with at least about 1 percent molar excess feedstock zinc metal to about 10 percent molar excess feedstock zinc metal, which feedstock zinc metal contains transition metal impurities comprising one or more of greater than 500 ppm Pb, at least 3 ppm Cu, and at least 1 ppm Fe, and producing an isolable zinc bromide composition comprising less than 1 ppm Pb, less than 1 ppm Cu, and less than 1 ppm Fe, which me…

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What does patent US8992882B2 cover?
Ultra-high purity zinc bromide and quaternary ammonium bromides suitable for use in zinc-bromine batteries, and methods for making same, are provided.
Who is the assignee on this patent?
Sauer Joe D, Cook Jr George W, Albemarle Corp
What technology area does this patent fall under?
Primary CPC classification C01G9/04. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Mar 31 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).