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:2024-03-11 Hits: Popular:AG11 battery
NCA ternary material Al element gradient doping technology has achieved a breakthrough?
Among high-nickel materials, NCA has become a very potential cathode material for lithium-ion batteries due to its relatively high capacity (up to more than 190mAh/g) and good cycle life. It has been used in mobile electronic devices, electric Applications in automotive and other fields. However, the main production technology of high-performance NCA materials is currently in the hands of Japanese and Korean manufacturers. Domestic production technology is not yet very mature, and the stability of products needs to be continuously improved.
Although the content of Al element in the material is very low and it has no electrochemical activity, the Al element is of great significance to the cycle stability of the material. Therefore, the research on the doping technology of Al element is particularly important.
Since the conditions for synthesizing α-LiAlO2 and LiNiO2 are similar, and the two can also form a stable solid solution structure, this provides the possibility of gradient doping of Al element. Generally speaking, NCA materials need to first synthesize the precursor Ni1-x-yCoxAly(OH)2 using a co-precipitation method. However, Al element hydrolyzes poorly in a strong alkaline environment, which inhibits the growth of particles. Therefore, the higher the concentration of Al element in the solution, the worse the crystallinity of the precursor material. Therefore, it is particularly important to develop a method that can control the growth of precursors and the gradient distribution of Al elements.
JianguoDuan et al. from Central South University developed a new co-precipitation method that prevents the chaotic nucleation of Al3+ during the co-precipitation process and obtains a gradient Al-doped precursor material. The synthesis method is as follows: Ni and Co sulfates are first dissolved in deionized water according to the molar ratio to form a bimetallic ion solution. The concentration of the solution is 2mol/L. The preparation of [Al(OH)x]3-x solution is slightly more complicated. First, you need to dissolve the Al nitrate in distilled water, then slowly add 32% NaOH until a stable solution is formed, and then add deionized water. , the molar concentration of the solution is 1mol/L. The solution is the high [Al(OH)x]3-x concentration solution AS1, and the other low [Al(OH)x]3-x concentration solution is AS2. The AS2 solution The initial concentration is set to 0mol/L. The AS1 solution will be continuously pumped into the AS2 solution through the pump to gradually increase the concentration of the AS2 solution. The synthesis process is relatively simple. Put the AS2 solution and Ni-Co double ion solution in N2 At the same time, pump it into a stirring container containing NH3·H2O solution under the protection of Control it at around 11, the NH3·H2O solution concentration at 0.5mol/L, the reaction temperature at 60°C, and the stirring speed at 500r/min. During the synthesis process, the concentration of Al element gradually increases with time. After 48 hours of reaction, the precipitate was filtered, washed with deionized water, and vacuum dried at 120°C for 24 hours. The obtained precursor was mixed with LiOH and roasted at 550°C for 4 hours and 750°C for 12 hours under a continuous flow of oxygen to obtain Al gradient doped NCA material.
Read recommendations:
What is the principle of lithium battery charging.rechargeable solar energy storage battery company
Why does battery capacity decrease quickly at low temperatures?
Last article:CR1625 battery.Separator technology: wet coating PK dry double pull coating
Next article:Boston-Power: New electric vehicle battery technology unveiled
Popular recommendation
601525 battery wholesaler
2023-03-22NiMH battery pack manufacture
2023-03-2236v 7.5ah lithium ion battery pack
2023-05-09603450 battery direct sales
2023-03-22li ion 18650 battery pack direct sales
2023-05-09801752 720mAh 3.7V
2022-08-19Lithium-ion battery GN500
2022-07-29801752 720MAH 3.7V
2023-06-1018650 1800mAh 3.7V
2022-06-20Wireless bluetooth headphones
2022-09-22L1022 10A
2022-10-09Coin Cell BR 1632
2022-10-15803040 1000MAH 3.7V
2023-06-105/AA USB 1.5V 2035mWh
2023-06-2918650 10000mAh 14.8V
2022-09-30802540 lipo battery
2023-06-25CR1616 battery
2023-06-25LR726 battery
2023-06-25NiMH battery packs manufacturer
2023-08-043V battery
2023-06-25Do you know the three major characteristics of lithium iron phosphate batteries.102450 polymer batte
2023-08-183.2v 25ah lifepo4 battery cell.About 18650 cylindrical lithium battery
2023-11-13Lithium battery application common sense
2024-04-10What issues should be noted when storing lithium batteries
2024-09-06New Technologies for Disposable Lithium Batteries
2025-04-02Lithium -ion battery has these advantageous characteristics.lithium ion solar energy storage system
2023-03-22Classification of ternary lithium batteries
2022-11-19UAC battery use.lithium battery for solar energy storage system wholesaler
2023-04-24Introduction to the Good Advantages of Polymer Batteries in Daily Use.102450 polymer battery
2023-08-18Lithium ion battery
2023-02-03