Lithium Battery 12V 120AH Deep Cycle Lifepo4 Battery For Car/UPS/Solar Storage
|1||Model||3.2V 120AH CATL||Single|
|2||Casing material for single cell||Nickel plated steel|
|4||Rated voltage||12.8V||3.20V(Work voltage:3.20V)|
|5||Max.Charge voltage||14.6V||3.65V(Single Ave. charge Voltage)|
|6||Cut-off voltage||10V||2.50V(Single Ave. Discharge Voltage)|
|8||Standard charge current||50A||0.5C|
|9||charging Time||About 5h|
|10||Max Continuous discharge current||120A||10C|
|11||Peak discharge current||150A||1.25C 5 mins|
|13||(Approx.)Total weight(Approx.)||About 12kg|
|14||(Max, at 1000Hz.)Impedance(Max, at 1000Hz.)||≤ 20mΩ|
Charge method (CC/CV)
The cathodes of such batteries are usually made in one of two ways, known as intercalation types or conversion types. Intercalation types, which use compounds such as lithium cobalt oxide, provide a high volumetric energy density — packing a lot of punch per volume because of their high densities. These cathodes can maintain their structure and dimensions while incorporating lithium atoms into their crystalline structure.
The other cathode approach, called the conversion type, uses sulfur that gets transformed structurally and is even temporarily dissolved in the electrolyte. “Theoretically, these [batteries] have very good gravimetric energy density,” Li says. “But the volumetric density is low,” partly because they tend to require a lot of extra materials, including an excess of electrolyte and carbon, used to provide conductivity.
In their new hybrid system, the researchers have managed to combine the two approaches into a new cathode that incorporates both a type of molybdenum sulfide called Chevrel-phase, and pure sulfur, which together appear to provide the best aspects of both. They used particles of the two materials and compressed them to make the solid cathode. “It is like the primer and TNT in an explosive, one fast-acting, and one with higher energy per weight,” Li says.