The working principle of lithium ion battery
Li-ion battery (Li-ion, Lithium Ion Battery): Li-ion battery has advantages of light weight, large capacity, no memory effect, etc., so it has been widely used-now many digital devices are used Lithium-ion batteries are used as power sources, although their prices are relatively expensive. Lithium-ion battery has a high energy density, its capacity is 1.5 to 2 times that of a nickel-hydrogen battery of the same weight, and it has a very low self-discharge rate. In addition, lithium-ion batteries have almost no “memory effect” and do not contain toxic substances and other advantages are also important reasons for their wide application.
The working principle of lithium ion battery
Lithium ion battery Lithium ion battery principle structure Lithium battery is divided into lithium battery and lithium ion battery. Currently, mobile phones and laptops use lithium-ion batteries, which are commonly referred to as lithium batteries. Currently, lithium-ion batteries used in mobile phones, etc., but real lithium batteries are not used in daily electronic products due to their high risk.
Lithium-ion battery positive and negative materials
Lithium ion battery anode material is carbon material, lithium ion battery cathode material is a compound containing lithium, there is no metal lithium, only lithium ion, this is a lithium ion battery. Lithium ion battery refers to the general term for batteries with lithium ion intercalation compound as the cathode material. The charging and discharging process of lithium ion batteries is the process of intercalation and deintercalation of lithium ions. In the process of intercalation and deintercalation of lithium ions, it is accompanied by the intercalation and deintercalation of electrons equivalent to lithium ions (the positive electrode is usually represented by insertion or deintercalation, and the negative electrode is represented by insertion or deintercalation). During the charging and discharging process, lithium ions are intercalated/deintercalated and intercalated/deintercalated back and forth between the positive and negative electrodes, which is vividly called the “rocking chair battery”.
Li-ion battery has high energy density and high average output voltage. The self-discharge is small, below 10% per month. There is no memory effect. The wide operating temperature range is -20℃～60℃. Excellent cycle performance, fast charging and discharging, charging efficiency up to 100%, and high output power. long lasting. There is no environmental pollution and it is called a green battery.