lithium nickel cobalt manganate (NCM811)-Lithium-ion battery ternary cathode material
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The ternary cathode materials contain nickel (Ni), cobalt (CO) and manganese (MN). The main valence states of the three elements are + 2, + 3 and + 4. Among the three elements, nickel and cobalt are active metals, while Mn is inactive. Generally speaking, the higher the content of active metal, the larger the battery capacity. However, if the content of Ni is too high, it will cause Ni2 + to occupy the position of Li +, and increase the battery capacity The results show that CO can inhibit the mixed discharge of cations and stabilize the layered structure of the material; Mn, as an inactive metal, does not participate in the electrochemical reaction and mainly plays the role of stabilizing the reaction, improving the safety and reducing the cost, but the excessive manganese content will destroy the layered structure of the material and reduce the specific capacity of the material.
The ratio of Ni, CO and Mn in the ternary cathode material can be adjusted in a certain range, and its performance will change with the different ratio of Ni, CO and Mn. The ternary cathode material can be expressed as linixcoymnzo2, where x + y + Z = 1. According to the different molar ratio (x ∶ y ∶ Z ratio) of the three elements, they are called different systems. The system with the molar ratio of 8 ∶ 1 ∶ 1 is called 811 system.
Because of the high content of Ni and low content of CO, 811 has the advantages of high capacity and low price, but it is more difficult to achieve the same stability as 111 system. Because the Ni content is too high, the manufacturing cost will also increase. This Ni based material also has high environmental requirements for making batteries. 811 battery needs high voltage electrolyte. Therefore, the manufacturing process of 811 series materials is the focus of current research.Product Details
AFT-8X product has strong applicability, good versatility, high energy density, stable structure, excellent cycle performance and good safety performance. It can be widely used in all kinds of steel shell, aluminum shell and polymer battery products.
Application field: suitable for CE, EV and other fieldsPhysical indexes Item Unit Specification Typical value Appearance / Black powder / H2O ppm ≤600 450 D10 μm ≥1.00 2.10 D50 μm 4.50± 1.50 4.50 D90 μm ≤15.00 8.31 Tap density g/cm3 ≥1.40 1.58 Specific surface area m2/g ≤1.50 0.95 CO32- wt% ≤0.35 0.24 OH- wt% ≤0.50 0.28 Li+ wt% ≤0.2 0.13 Li wt% 7.15±0.30 7.40 Ni wt% 49.80±1.50 49.30 Co wt% 7.40±0.60 6.90 Mn wt% 2.90±0.60 3.00 Fe ppm ≤50 16 Na ppm ≤300 50 Ca ppm ≤200 20 Mg ppm ≤200 30 Cu ppm ≤50 3 pH / ≤12.0 11.65 Crystal structure / No impurity peak Electrochemical performance Specific capacity mAh/g ≥198.0 201.0 First time efficiency % ≥88.0 88.5 SEM
Particle size distribution
XRD
Matters needing attention
Vacuum sealed packaging, placed in a cool and dry place, shelf life of one year, storage environment clean, normal temperature, cool and dry; use immediately after opening the packaging bag, can not be used immediately, sealed after storage, to prevent moisture absorption.
Delivery Time:In Stock
