Lead-acid batteries and pastes therefor
US-8932482-B2 · Jan 13, 2015 · US
Lead-acid batteries and pastes therefor
US9368787B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9368787-B2 |
| Application number | US-201514591964-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 8, 2015 |
| Priority date | Nov 2, 2009 |
| Publication date | Jun 14, 2016 |
| Grant date | Jun 14, 2016 |
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Abstract
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A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 100 and about 2100 m 2 /g; and (b) an oil adsorption number (OAN) in the range of about 35 to about 360 cc/100 g, provided that the oil absorption number is less than the 0.14×the BET surface area+65.
First claim
Opening claim text (preview).
The invention claimed is: 1. A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 600 and about 2100 m 2 /g; and (b) an oil adsorption number (OAN) in the range of about 80 to about 250 cc/100 g. 2. The paste of claim 1 , wherein the carbon black loading is about 0.5 to about 10 wt % relative to the lead oxide. 3. The paste of claim 1 , wherein the carbon black has an oil adsorption number (OAN) in the range of about 80 to about 200 cc/100 g. 4. The paste of claim 1 , wherein the carbon black has a water adsorption in the range of about 1×OAN to about 1.5×OAN cc/100 g. 5. The paste of claim 1 , wherein the carbon black has an average primary particle size of about 8 to about 20 nm. 6. The paste of claim 1 , wherein the carbon black has an average aggregate size of about 35 to about 150 nm. 7. The paste of claim 1 , wherein the carbon black has an average agglomerate size between about 0.5 and about 10 microns. 8. The paste of claim 1 , wherein the carbon black has been modified to comprise surface sulfate or sulfonate groups. 9. A negative plate for a lead-acid battery produced from the paste of claim 1 . 10. A lead-acid battery comprising a negative plate produced from the paste of claim 1 .
Assignees
Inventors
Classifications
Oxides · CPC title
Electric properties · CPC title
Carbon black · CPC title
- H01M4/14Primary
Electrodes for lead-acid accumulators · CPC title
Surface area · CPC title
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- What does patent US9368787B2 cover?
- A paste suitable for a negative plate of a lead-acid battery, the paste comprising lead oxide and carbon black, wherein the carbon black has the following properties: (a) a BET surface area between about 100 and about 2100 m 2 /g; and (b) an oil adsorption number (OAN) in the range of about 35 to about 360 cc/100 g, provided that the oil absorption number is less than the 0.14×the BET surface a…
- Who is the assignee on this patent?
- Cabot Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/14. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 14 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).