The working principle of lithium batteries: The positive electrode material of lithium batteries is LiMn2O4, and the negative electrode material is graphite. During charging, the addition of Li in the positive electrode and the addition of Li in the electrolyte gather toward the negative electrode, obtaining electrons that are reduced to Li and embedded in the carbon material of the electrode negative. During discharge, the Li embedded in the negative carbon material loses electrons and enters the electrolyte. The Li present in the electrolyte moves towards the positive electrode, using chemical reactions to carry out the discharge process.
Lithium metal batteries generally use manganese dioxide as the positive electrode material, lithium metal or its metal alloy as the negative electrode material, and use non-aqueous electrolyte solution. Lithium-ion batteries usegenerally have a lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, and a non-aqueous electrolyte.
Real lithium-ion batteries have a uniform wear-resistant surface and are made of PC material. Generally, the surface of fake lithium-ion batteries is too rough and the material used is easier. to crack.
As the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.
Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. Security, specific capacity,the self-discharge rate and performance-price ratio are all superior to lithium-ion batteries.
Lithium batteries were first used in pacemakers. Lithium batteries have the advantages of extremely low self-discharge rate and gentle discharge voltage, allowing pacemakers implanted in the human body to work for a long time without recharging. Lithium batteries typically have a voltage rating above 3.0 volts and are best suited for use as an integrated circuit power supply. Manganese dioxide batteries are widely used in calculators, digital cameras and watches.