Many people basically think that lithium nickel cobalt manganate battery is a type of battery, but I don’t think so. Lithium nickel cobalt manganate battery is a very important material in lithium batteries and is currently the most widely used battery material. But cobalt's energy is becoming increasingly scarce, so this battery is also facing reform and progress. Consumers may not study its structural materials carefully when using it, so today, the editor will share with friends what is lithium nickel cobalt manganate?
Lithium nickel cobalt manganate sharing: Introduction
Compared with the same period last year, cheap nickel manganese replaced more than two-thirds of lithium cobalt oxide. Cobalt has a very obvious cost advantage. Compared with other cathode materials of lithium-ion batteries, lithium manganate and lithium iron phosphate, lithium nickel cobalt manganate is very close to lithium cobalt oxide in electrochemical performance and production and processing performance, which makes lithium nickel cobalt manganate become a New battery materials have gradually replaced lithium cobalt oxide and become the favorite of the new generation of lithium-ion battery materials.
Lithium cobalt manganate is one of the key materials for lithium-ion batteries. Lithium cobalt oxide is currently the most widely used battery material, but cobalt resources are increasingly scarce and expensive, and lithium cobalt oxide batteries have safety risks during use.
Lithium nickel cobalt manganate enjoys: Performance
(1) High energy density, theoretical capacity 280mAh/g, actual product capacity above 150mAh/g;
(2) Good cycling performance at room temperature and high temperature, excellent cycling stability;
(3) High voltage platform, stable and reliable cycling within the voltage range of 2.5-4.3/4.4V;
(4) Good thermal stability, the material is stable in thermal decomposition under 4.4V charging state;
(5) Long cycle life, 1C cycle life of 500 times, capacity of more than 80;
(6) Excellent crystal structure, small self-discharge, and no memory effect.
Preparation of lithium nickel cobalt manganate
The preparation methods of lithium nickel cobalt manganate mainly include high-temperature solid phase synthesis and precipitation. Now, it is crucial to use manganese compounds, nickel compounds, lithium cobalt oxide and lithium hydroxide as raw materials. Through hydrothermal reaction, the prerequisite for good combination of lithium, manganese, cobalt and nickel can be obtained. Then, a lithium source can be added under the premise, and the precursor can be obtained by grinding. After calcination, lithium nickel cobalt manganate can be prepared. With the increasing shortage of global resources and environmental pressure, battery materials must follow the route of distribution and circulation. Bangpu Recycling Technology Co., Ltd. has successfully invented a method for directional recycling of lithium nickel cobalt manganate using waste lithium-ion batteries. Its key features are: after dismantling, sorting, crushing, screening and other pre-processing of waste lithium-ion batteries, high-temperature binder removal, sodium hydroxide aluminum removal and other processes are used, and leaching with sulfuric acid and hydrogen peroxide systems , use P204 to extract impurities to obtain pure nickel, cobalt, and manganese solutions. Add an appropriate amount of manganese sulfate, nickel sulfate, or cobalt sulfate to adjust the molar ratio of nickel, cobalt, and manganese elements; then use ammonium carbonate to adjust the PH value. After development and changes A nickel cobalt manganese carbonate precursor is formed. Then add appropriate lithium carbonate and sinter it at high temperature to form lithium nickel cobalt manganese oxide. This method has simple process flow, low raw material prices, and high added value of the product. With the help of industry and the production of lithium nickel cobalt manganate, a new way is provided for the recycling of used batteries.
The above is the content of lithium nickel cobalt manganate shared by the automotive editor with friends. From the content shared by the car editor with friends, friends can know that this battery still has many excellent properties, and different preparation methods also have different advantages and disadvantages. Preparations are pretty simple compared to this time last year. However, cobalt resources are the biggest problem facing this battery. We look forward to innovation in this battery.
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