What materials are made of lithium batteries?

The important parts of lithium batteries are composed of: positive electrode material, negative electrode material, electrolyte, and separator. positive electrode. From the perspective of battery weight composition, the positive electrode material accounts for a large proportion (generally 70% to 80%), because the performance of the positive electrode material directly affects the performance of the lithium battery, and its cost directly determines the cost of the battery, and also directly affects the lithium battery The energy density and performance of the group. negative electrode. The negative electrode material is composed of a material with a lower potential relative to the positive electrode, and has a high specific capacity and good charge-discharge reversibility, so as to maintain good size and mechanical stability during the lithium insertion process. The negative electrode material greatly affects the efficiency and cycle performance of the lithium battery pack. The performance of the negative electrode material also directly affects the performance of the lithium battery pack. The types of negative electrode materials include carbon-based negative electrodes and non-carbon negative electrodes. Electrolyte. The electrolyte serves the purpose of transporting charge between the positive electrode and the negative electrode, and has a high ionic conductivity, which should generally reach 1x10-3~2x10-2S/cm. It affects the energy density, cycle life, power density, safety performance and other factors of power lithium batteries. Diaphragm. The diaphragm has a certain pore size and porosity to ensure low resistance and high ionic conductivity, good permeability to lithium ions, good wettability to the electrolyte and sufficient liquid absorbing and moisturizing ability to maintain ion conductivity It also has electrical insulation properties. In addition, it has sufficient mechanical properties such as puncture strength and tensile strength, as well as electrolyte corrosion resistance and sufficient electrochemical stability. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What does the charging cycle of a lithium battery mean?