What factors affect the discharge performance of high-rate lithium-ion batteries

The first major factor: the impact of size on high-rate lithium-ion batteries. When you buy different types of batteries, their discharge performance, the same formula material, the high-rate discharge performance of different types of batteries will be different, you will find that when you The larger the battery, the better the discharge performance, so the discharge size under the same rate is also related to the capacity of the battery size. The second major factor: battery lithium-ion battery electrolyte will also affect high-rate batteries. The difference in the first discharge capacity of different electrolyte batteries is very small; when the rate is discharged, the first discharge capacity of the standard electrolyte battery is obviously not as good as that of the functional electrolyte battery. It can't even be discharged normally. The third major factor: the use of different types of anode materials will also affect the discharge performance of high-rate lithium-ion batteries. Artificial graphite and MCMB. Different types of anode materials have a greater impact on the high-rate discharge performance. The specific surface area ratio of artificial graphite MCMB is much larger, but the high-rate discharge performance is far inferior to MCMB. MCMB material has better discharge performance than artificial graphite material. Electronic conductivity is also better. The fourth factor: the thickness of the positive electrode material affects high-rate batteries. High-rate lithium-ion batteries have a lower capacity than thick ones when using a thin positive electrode. When discharged at the same rate, the current density flowing through the positive electrode. It is not the same. Under the same rate, the current density flowing through the thin positive battery is smaller, and the polarization of the electrochemical reaction is relatively small, so the discharge effect is better than the thick positive battery, reducing the thickness of the positive electrode can effectively improve the discharge of the battery Magnification. Fifth factor: How much conductive agent is placed on the high-rate lithium-ion battery The content of the conductive agent in the positive electrode has a significant impact on the high-rate discharge performance of the battery. The content of the positive electrode conductive agent is a key factor affecting the high-rate discharge performance of lQ0C. An important reason why normal batteries cannot perform 1Q0C rate discharge is that the content of the conductive agent in the normal positive electrode formulation is insufficient. When the high current discharges, the electrons cannot be transferred in time, and the internal polarization resistance increases rapidly, so that the voltage of the battery quickly drops to the discharge termination voltage. Disclaimer: Some pictures and content of the articles published on this site are from the Internet, please contact to delete if there is any infringement. Previous: Introduction to the basic knowledge of mobile phone lithium-ion batteries