Composition that enhances deep cycle performance of valve-regulated lead-acid batteries filled with gel electrolyte
View Patent ↗Disclosed herein is a composition for use in a negative active material in a valve regulated lead-acid battery, including a carbon material having a BET surface area from 150 m 2 /g to 2000 m 2 /g and having a D 90 -value greater than 5 μm with the amount of carbon material ranging from 0.1 wt % to 1.5 wt % based on the total weight of the composition. Also disclosed herein is a valve regulated lead-acid battery, including a positive plate, a negative plate, a separator, and an electrolyte disposed in a container with a valve, the negative plate including a substrate of lead or a lead alloy and a negative active material of a composition including a carbon material having a BET surface area from 150 m 2 /g to 2000 m 2 /g and having a D 90 -value greater than 5 μm, the amount of carbon material ranging from 0.1 wt % to 1.5 wt % based on the total weight of the composition.
1. A composition for use in a negative active material in a valve regulated lead-acid battery, comprising:
a carbon material having a BET surface area from 150 m 2 /g to 2000 m 2 /g and having a D 90 -value greater than 5 μm;
wherein the amount of carbon material ranges from 0.1 wt % to 1.5 wt % based on the total weight of the composition.
2. The composition of claim 1 , wherein the carbon material comprises an activated carbon, an amorphous carbon, a carbon black, a graphite, a carbon fiber, or a combination thereof.
3. The composition of claim 1 , wherein the carbon material comprises an activated carbon, a graphite, a carbon fiber, or a combination thereof.
4. The composition of claim 1 , wherein the BET surface area ranges from 150 m 2 /g to 1500 m 2 /g.
5. The composition of claim 1 , wherein the BET surface area ranges from 200 m 2 /g to 1500 m 2 /g.
6. The composition of claim 1 , wherein the D 90 -value ranges from 5 μm to 2000 μm.
7. The composition of claim 1 , wherein the D 90 -value ranges from 5 μm to 100 μm.
8. The composition of claim 1 , wherein the D 90 -value ranges from 5 μm to 50 μm.
9. The composition of claim 1 , wherein the amount of carbon material ranges from 0.1 wt % to 1.2 wt % based on the total weight of the composition.
10. The composition of claim 1 , wherein the amount of carbon material ranges from 0.2 wt % to 1.0 wt % based on the total weight of the composition.
11. A valve regulated lead-acid battery, comprising:
a positive plate, a negative plate, a separator, and an electrolyte disposed in a container comprising a valve,
wherein the negative plate comprises
a substrate comprising lead or a lead alloy and
a negative active material comprised of a composition comprising a carbon material having a BET surface area from 150 m 2 /g to 2000 m 2 /g and having a D 90 -value greater than 5 μm;
wherein the amount of carbon material ranges from 0.1 wt % to 1.5 wt % based on the total weight of the composition.
12. The battery of claim 11 , wherein the carbon material comprises an activated carbon, an amorphous carbon, a carbon black, a graphite, a carbon fiber, or a combination thereof.
13. The battery of claim 11 , wherein the carbon material comprises an activated carbon, a graphite, a carbon fiber, or a combination thereof.
14. The battery of claim 11 , wherein the BET surface area ranges from 150 m 2 /g to 1500 m 2 /g.
15. The battery of claim 11 , wherein the BET surface area ranges from 200 m 2 /g to 1500 m 2 /g.
16. The battery of claim 11 , wherein the D 90 -value ranges from 5 μm to 2000 μm.
17. The battery of claim 11 , wherein the D 90 -value ranges from 5 μm to 100 μm.
18. The battery of claim 11 , wherein the D 90 -value ranges from 5 μm to 50 μm.
19. The battery of claim 11 , wherein the amount of carbon material ranges from 0.1 wt % to 1.2 wt % based on the total weight of the composition.
20. The battery of claim 11 , wherein the amount of carbon material ranges from 0.2 wt % to 1.0 wt % based on the total weight of the composition.