Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Lead-acid batteries and pastes therefor
US9112231B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9112231-B2 |
| Application number | US-201113289473-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 4, 2011 |
| Priority date | Nov 5, 2010 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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- Title
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Abstract
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A paste suitable for a negative plate of a lead-acid battery comprises lead oxide and composite particles comprising carbon and silica.
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 first composite particles comprising both carbon and silica domains within the same individual particles having an average size of between about 10 to about 20 nm. 2. The paste of claim 1 , wherein the loading of said composite particles is from about 0.2 to about 25 wt % relative to the lead oxide. 3. The paste of claim 1 , wherein the loading of said composite particles is from about 0.5 to about 10 wt % relative to the lead oxide. 4. The paste of claim 1 , wherein the weight ratio of carbon to silica in said composite particles is from about 98:2 to about 50:50. 5. The paste of claim 1 , wherein the weight ratio of carbon to silica in said composite particles is from about 95:5 to about 50:50. 6. The paste of claim 1 , wherein the weight ratio of carbon to silica in said composite particles is from about 90:10 to about 75:25. 7. The paste of claim 1 , wherein the paste further comprises second composite particles different from the first composite particles, the second composite particles comprising silica coated on surfaces of carbon particles. 8. The paste of claim 1 , wherein the paste further comprises second composite particles different from the first composite particles, the second composite particles comprising agglomerates of carbon and silica aggregate particles. 9. The paste of claim 8 , wherein the agglomerates have an average size between about 0.2 and about 10 microns. 10. The paste of claim 1 , wherein the carbon comprises carbon black. 11. The paste of claim 10 , wherein the carbon black has been modified to comprise surface sulfate or sulfonate groups. 12. The paste of claim 1 wherein the composite particles further include at least one of barium sulfate and a lignosulfonate. 13. A negative plate for a lead-acid battery produced from the paste of claim 1 . 14. A lead-acid battery comprising a negative plate produced from the paste of claim 1 . 15. The paste of claim 1 , wherein the composite particles are generally agglomerated into substantially spherical, mesoporous agglomerates.
Assignees
Inventors
Classifications
Negative electrodes · CPC title
- H01M4/625Primary
Carbon or graphite · CPC title
Valve regulated lead acid batteries [VRLA] · CPC title
Cross-Sectional Technologies · mapped topic
Electrodes for lead-acid accumulators · CPC title
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- What does patent US9112231B2 cover?
- A paste suitable for a negative plate of a lead-acid battery comprises lead oxide and composite particles comprising carbon and silica.
- Who is the assignee on this patent?
- Atanassova Paolina, Blizanac Berislav, Kodas Toivo, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/625. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 18 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).