Common cathode materials and selection factors for lithium batteries

The common cathode material of lithium batteries The cathode material has always been the core of lithium batteries, and is also an important source of lithium ions in the current commercial lithium batteries. Its choice directly determines the level of battery performance. Currently, the positive electrode materials successfully developed and used include lithium cobalt oxide, lithium iron phosphate, lithium manganate, ternary materials such as lithium nickel cobalt manganate (NCM) and lithium nickel cobalt aluminate (NCA). Cathode material selection factors: 1) have a higher oxidation-reduction reaction potential, so that the lithium battery can reach a higher output voltage; 2) the content of lithium is high, and the material packing density is high, so that the lithium battery has a higher energy density; 3) chemistry The structural stability during the reaction process should be good, so that the lithium battery has a long cycle life; 4) the electrical conductivity should be high, so that the lithium battery has good charge and discharge rate performance; 5) the price is cheap, so that the cost of the lithium battery is low enough. In contrast, there are not as many studies on anode materials for lithium batteries as cathode materials, but anode materials still play a crucial role in improving the performance of lithium batteries. The global sales volume of anode materials for lithium batteries is about 100,000 tons, and the production areas are mainly my country and Japan. According to the current rising trend of new energy vehicles, the demand for anode materials will also continue to rise. With the advancement of technology, the current lithium battery anode materials have developed from a single artificial graphite to natural graphite, mesophase carbon microspheres, artificial graphite, soft carbon/hard carbon, amorphous carbon, lithium titanate, silicon carbon The coexistence of various anode materials such as alloys. 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: Why does Tesla use 18650 lithium battery packs?