Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-03-12 Hits: Popular:AG11 battery
After more than 20 years of development, lithium-ion batteries have made great progress in terms of reliability and battery performance. A variety of cathodes have also been developed during this process, such as lithium cobalt oxide, which has the longest history, as well as lithium iron phosphate, lithium manganate, etc. However, as the performance requirements for lithium-ion batteries have further improved, these materials can no longer meet the requirements, and ternary materials have been born.
Ternary materials mainly refer to nickel cobalt manganese lithium materials (NCM). Its biggest advantage is its high capacity. For example, the capacity of NCM811 material can reach about 220mAh/g, which is significantly better than lithium cobalt oxide (140mAh/g). Improvement, and NCM materials also have high-voltage potential and can be charged to 4.35V. At the same time, the addition of manganese also reduces the cost of the material. However, NCM materials (especially high-nickel 811, 532, etc.) generally have problems with synthesis difficulties and unstable cycle performance. This requires improvements in the synthesis process and roasting process. Today, the editor will take you to familiarize yourself with the preparation process of NCM precursor.
The electrochemical performance of NCM materials depends largely on the morphology of the precursor and the uniformity of particle distribution. The main method currently used in industry is the co-precipitation method. The main raw materials are cobalt sulfate, nickel sulfate, nickel sulfate and sodium bicarbonate. Make ammonium bicarbonate into a solution, dissolve manganese sulfate, cobalt sulfate, and nickel sulfate in deionized water at a mass ratio of 0.54:0.13:0.13, and slowly add the ammonium bicarbonate solution while stirring continuously. The pH value of ammonium bicarbonate solution is 7.78. At this pH value, Ni2+, Co2+, and Mn2+ will all generate carbonates, but no hydroxide and basic carbonate will be generated. The specific reaction equation is as follows:
Filter the precipitate obtained from the reaction and wash it with deionized water until no sulfate residue remains (use BaCl2 solution for detection until the filtrate no longer appears white precipitate). Put the obtained precipitate into a vacuum oven and dry it at 80°C. The precursor of ternary materials - ternary carbonate is obtained. In actual production, the conversion rate of sulfate is closely related to the concentration of reactants, the ratio between reactants and the temperature of the reaction.
When the concentration of ammonium bicarbonate gradually increases from low to high, the color of the solution changes from dark to light, to colorless, and then dark. The color of the solution represents the remaining metal ions in the solution. Therefore, there is an optimal value for the concentration of ammonium bicarbonate. Near this concentration, the metal ion precipitation effect is best. When the concentration is less than this concentration or greater than this concentration, metal ion precipitation will occur. Insufficient, resulting in waste and environmental pollution. Secondly, the concentration ratio of ternary metal salt and ammonium bicarbonate will also affect the precipitation effect of metal ions. After fixing the concentration of ammonium bicarbonate, adjust the amount of ammonium bicarbonate solution. It is found that with the addition of ammonium bicarbonate solution, the color of the solution gradually becomes lighter. When the ratio reaches 1:5, the solution is basically colorless. Calculate The conversion efficiency at this time is 91.2%. Increasing the amount of ammonium bicarbonate will have little effect on the conversion efficiency. For lithium-ion battery materials, the morphology also has a decisive influence on the electrical performance. In production, the precursor is generally required to be uniform spherical particles. In actual production, it was found that as the amount of ammonium bicarbonate increases, the spherical particle size of the precursor slightly decreases. increase, so the size of the precursor can be purposefully controlled according to requirements.
Read recommendations:
Home energy storage battery FBC-HS03
What are the explosion-proof requirements for using explosion-proof lithium batteries?3.7v 2200mah 1
Last article:no. 7 alkaline battery.Research on supercapacitor energy storage control technology
Next article:18650 battery 10000mah.Research on multi-winding pure electric vehicle power supply control system
Popular recommendation
26650 battery Factory
2023-03-22701221 battery sales
2023-03-2218650 battery pack 12v
2023-05-09701221 lipo battery company
2023-03-2218650 li-ion battery manufacturer
2023-03-22LR6
2022-11-16LR61
2022-11-16Home energy storage battery GN-BOX1
2022-09-27LR14
2022-08-19401030 90MAH 3.7V
2023-06-12Lithium Battery LQ12-100
2022-07-29803040 1000MAH 3.7V
2023-06-10LR20
2022-08-19Coin Battery CR 2032
2022-09-27402427 260mAh 3.7V
2022-08-1912V23A battery
2023-06-25li ion 18650 battery pack Factory
2023-06-253.7v 3000mah 18650 battery
2023-06-25NiMH No. 7
2023-08-043.7v 2200mah 18650 lithium battery
2023-06-25Drone battery charging.portable energy storage battery power supply Manufacturing
2023-04-24Lithium ion battery function
2024-08-21Super battery prospect.18650 lithium ion battery cell
2023-07-14CR2320 battery.This is the real reason why electric vehicle batteries are becoming increasingly less
2023-11-063.7v 2200mah 18650 lithium battery.Differences in 18650 lithium battery types
2024-01-04Disadvantages of lithium battery positive materials
2023-06-02What are the misunderstandings about lithium battery discharge?402030 battery
2023-06-05Lithium iron phosphate (LiFePO4) lithium battery.energy storage battery for solar system Factory
2023-04-18Analyze how to export lithium iron phosphate batteries safely?solar energy storage lithium ion batte
2023-03-10Who is the future of new energy comparison between the blade battery?solar energy storage lithium io
2023-03-23