The ternary lithium battery service life on earth and how long?

Source: 2020 - 04 - 03 21:46 hits: with the development of energy conservation and environmental protection, more and more environmental protection products have been applied to the market. In the battery industry, the ternary lithium batteries with many advantages quickly occupy the market, and gradually replace the traditional lead-acid batteries. For conventional batteries ternary lithium battery has a long service life, energy conservation, environmental protection, no pollution, low maintenance cost, charge and discharge fully, the advantages of light weight, always say ternary lithium battery service life is long, how long? The ternary lithium batteries ternary lithium battery is what? Lithium is essentially a * light, relative atomic mass * small metal, its relative atomic mass is 6. 94g/mol， =0. 53g/cm3。 Lithium is very active in the chemical, it is easy to lose electrons are oxidized to lithium ion. Therefore, the standard electrode potential * is negative, for - 3. 045 v, electrochemical equivalent * smaller, 0. 26g/Ah。 These characteristics of lithium determines it is a kind of material than can be very high. Ternary lithium battery refers to three types of transition metal oxides as the anode material of lithium secondary battery. The characteristics of comprehensive, the good cycle performance of lithium cobalt oxide, lithium nickelate high specific capacity, high security and low cost of lithium manganese acid salt, and synthetic compound embedded lithium oxide collaborative multiple elements such as nickel and cobalt manganese by molecular hybrid, doping, coating and surface modification. It is now widely research and application of a lithium ion rechargeable batteries. Ternary lithium battery life of lithium battery life is refers to the so-called battery in use after a period of time, capacity attenuation is nominal capacity ( Room temperature 25 ℃, the standard atmospheric pressure, 0. 2 c discharge battery capacity) Of 70%, can be thought of as the end of the life of the battery. In general, the cycle life of lithium-ion batteries is calculated according to the full discharge cycles. In the process of using, lithium battery internal irreversible electrochemical reaction will happen, resulting in a decline in production, such as the electrolyte decomposition, the deactivation of the active material and the positive and negative electrode structure collapse, leads to reducing the number of lithium ion embedded and deembedded, and so on. The experimental results show that the higher the discharge rate, the faster capacity attenuation. If the discharge current is low, the battery voltage will be close to equilibrium voltage, release more energy. The ternary lithium battery life is about 800 times the theory, in the commercial lithium rechargeable battery in the medium level. There are about 2000 circulation, lithium iron phosphate lithium titanate and it is said that there are 10000 cycles. The current mainstream battery manufacturers in their production of three yuan normative commitment (500 times Under the condition of the standard of charging and discharging) , but in the cells from the battery, due to the consistency problem, mainly is the voltage and internal resistance cannot be exactly the same, the cycle life of about 400 times. Manufacturers recommend using SOC window is 10% ~ 90%, it is not recommended for depth charge and discharge, otherwise the battery of the positive and negative structure cause irreversible damage. If the battery is calculated by charging and discharging light, so the cycle of the battery life is at least 1000 times. In addition, if lithium batteries are often in high power and high temperature environment, the battery life will be significantly reduced to less than 200 times.