Nickel-cadmium batteries
Nickel-cadmium battery (Ni-Cd) Voltage: 1.2V Service life: 500 times Discharge temperature: -20 degrees to 60 degrees Charging temperature: 0 degrees to 45 degrees
NiMH batteries
Ni-MH battery (Ni-MH) Voltage: 1.2V Service life: 1000 times Discharge temperature: -10 degrees to 45 degrees Charging temperature: 10 degrees to 45 degrees
Lithium Ion Battery
Lithium-ion battery (Li-lon) Voltage: 3.6V Service life: 500 times Discharge temperature: -20 degrees to 60 degrees Charging temperature: 0 degrees to 45 degrees , The capacity is more than 60% higher than nickel-metal hydride batteries. However, it is not resistant to overcharge. If it is overcharged, the temperature will be too high and the structure will be destroyed => explosion.
Carbon aluminum foil coated with conductive coating of lithium ion battery:
Surface treatment of battery conductive substrates with functional coatings is a breakthrough technological innovation. Carbon-coated aluminum foil / copper foil is a coating of dispersed nano-conductive graphite and carbon coated particles on aluminum foil / On copper foil. It can provide excellent static conductivity and collect the microcurrent of the active material, which can greatly reduce the contact resistance between the positive / negative material and the current collector, and improve the adhesion between the two, which can reduce adhesion The amount of the agent used, thereby further improving the overall performance of the battery.
Advantages of battery aluminum foil in lithium battery applications
I. Material description
Carbon-coated aluminum foil is composed of conductive carbon-based composite paste and high-purity electronic aluminum foil, which is made by transfer coating process.
Application
Ø Power lithium battery with fine particle active material
Ø Positive electrode is lithium ferrous phosphate
Ø Positive electrode is fine particle ternary / lithium manganate
Ø Used for super capacitors, lithium primary batteries (lithium, lithium manganese, lithium iron, button, etc.) instead of etching aluminum foil
Performance effect on battery / capacitor
Ø Suppress battery polarization, reduce thermal effects, and improve rate performance;
Ø Reduce the internal resistance of the battery, and significantly reduce the dynamic internal resistance increase in the cyclic process;
Ø Improve consistency and increase the cycle life of the battery;
Ø Improve the adhesion between active materials and current collectors, and reduce the manufacturing cost of pole pieces;
Ø Protect current collector from corrosion by electrolyte;
Ø Improve the high and low temperature performance of lithium iron phosphate battery, improve the processing performance of lithium iron phosphate, lithium titanate materials.