●Lithium cobalt cathode battery material
At present, the most commonly used cathode material for lithium ion battery is of stable structure, high specific capacity and outstanding comprehensive performance, but its safety is poor and its cost is very high. It is mainly used for small and medium sized electric core and nominal voltage 3.7V.
●Lithium manganate cathode material
A kind of positive material with low cost and good safety, but its material itself is not too stable and easily decomposed to produce gas, so it is used in mixing with other materials to reduce the cost of the electric core, but its cycle life attenuates quickly, it is easy to bulge and the life is relatively short. It is mainly used in large and medium type electric core and power. In terms of pool, its nominal voltage is 3.8V.
●Lithium nickel cobalt manganese three element cathode material
A kind of material with relatively balanced capacity and safety, with better cycling performance than normal lithium cobalt. Due to technical reasons, its nominal voltage is only 3.5-3.6V, and the scope of use is limited. At present, with the continuous improvement and structure of the formula, the nominal voltage of the battery has reached 3.7V, and the capacity has already been achieved. After reaching or exceeding the level of lithium cobaltate, the world's 5 major core brands SANYO, PANASONIC, SONY, LG, and SAMSUNG have introduced the core of three yuan material, and a considerable portion of the note type battery lines have replaced the previous cobalt acid lithium core, SANYO, and SAMSUNG column batteries with a full stop of the cobalt acid lithium core steering. Three Yuan electric core manufacturing, at present, small and high power batteries at home and abroad mostly use three yuan cathode materials.
●Lithium iron phosphate cathode material
At present, a new kind of newly developed lithium ion battery material has the outstanding features of excellent safety, no explosion and excellent cycle performance for 2000 weeks. These features make it very suitable for electric vehicles, electric tools and other fields. Its nominal voltage is only 3.2-3.3V, so its protective line is also different from common lithium ion batteries, but his shortcomings are also obvious, and the energy density is far lower than lithium cobalt and three yuan.
