The factors for lithium-ion Lipo battery charging and discharging rate performance

The factors for lithium-ion Lipo battery charging and discharging rate performance

1. The internal resistance of the lithium-ion battery

The positive and negative electrode collector ( Tab ) is the carrier of the Lipo battery to transmit electricity to the outside world, and the resistance of the collector also has a great influence on the multiplication performance of the battery.  In addition, the liquid absorption and porosity of the membrane also have a great influence on the permeability of lithium ions, and to a certain extent, affect the lithium-ion battery performance (relatively small) . The contact resistance at the electrolyte-electrode interface is affected by the degree of lithium-ion battery between the electrolyte and the anode material, which in turn affects the power performance of the battery. The total amount of electrolyte, viscosity, impurity content and porosity of anode and cathode materials can change the contact impedance between electrolyte and electrode, which is an important research direction to improve the magnification performance.

2. The ionic conductivity of an electrolyte

The ionic conductivity of an electrolyte is the same as the resistance of water and has a great effect on the speed of lithium-ion swimming. The current organic electrolytes used in Lipo battery, both liquid and Fast ion conductor, do not have very high ionic conductivity. The resistance of the electrolyte is an important component of the resistance of the whole battery, and its effect on the high-magnification performance of the lithium-ion battery can not be ignored. In addition to improving the ionic conductivity of electrolytes, the chemical and thermal stability of electrolytes should be paid more attention to. If the chemical stability of electrolyte is not good, it is easy to oxidize and analyze on the surface of cathode material, which will affect the ionic conductivity of electrolyte.

3. The diffusivity of the positive and negative in the Lipo battery

The rate at which the lithium ions are dislodged and embedded in the positive and negative active materials, is the rate at which the lithium ions are released from the positive and negative active materials, or from the positive/negative surface into the active material to find a location within the speed of home, which affects the charge and discharge rate is an important factor.

In fact, for all lithium batteries, such as primary LiSOCL2 battery, LiMNO2 battery, Ultra thin battery, the discharge current rate depends on these factors. According to these factors, we make the most suitable battery for different products.