Details
The material needs to be vacuum sealed for storage
The material is prone to water absorption, and humidity control is required throughout the entire production process
The electrolyte used during testing is NCM electrolyte (KLD-1230C)
Baking conditions for electrodes: Bake at 85 ℃ for 4 hours
Nickel cobalt manganese NCM811 (single crystal) is suitable for high voltage applications ranging from 4.25 to 4.35V, with advantages such as high capacity, high initial efficiency, high energy density, stable structure, high temperature and cycling performance.
| Physical and chemical properties | |||||||
| Serial Number | Test items | Units | Specifications | Measured results | Inspection method or instrument | ||
| 1 | Chemical composition | Li | (wt%) | 7.0±2.0 | 7.14 | ICP | |
| 2 | Co+Ni+Mn | (wt%) | 60.0±3.0 | 60.07 | |||
| 3 | Fe | (wt%) | ≤0.01 | 0.0007 | |||
| 4 | Cu | (wt%) | ≤0.01 | 0.0002 | |||
| 5 | Na | (wt%) | ≤0.01 | 0.0025 | |||
| 6 | Ca | (wt%) | ≤0.01 | 0.0024 | |||
| 7 | Mg | (wt%) | ≤0.01 | 0.0036 | |||
| 8 | Free lithium | (wt%) | ≤0.5 | 0.0698 | Acid burette | ||
| 11 | Physical Properties | Particle size distribution | D10 | (μm) | ≥1.5 | 1.762 | Laser particle size analyzer |
| 12 | D50 | (μm) | 2.5~6.0 | 3.589 | |||
| 13 | D90 | (μm) | ≤10.0 | 7.032 | |||
| 14 | BET | (m2/g) | ≥0.5 | 0.77 | Automatic specific surface and porosity analyzer | ||
| 15 | TD | (g/cm3) | ≤4.2 | 1.84 | Tweak density gauge | ||
| 16 | pH | / | 11.0~12.0 | 11.36 | pH meter | ||
| 17 | Moisture | (ppm) | ≤800 | 321.6 | Moisture Analyzer | ||
| 18 | Electrochemical Performance | First discharge capacity | (mAh/g) | ≥190.0 | 201.3 | CR2032 0.1/0.1C(4.3-3.0V) |
|
| 19 | First Time Efficiency | (%) | ≥85.0 | 86.1 | |||
Half battery test
CC rate charging; CV constant voltage charging; DC rate discharge
SEM
The positive electrode material for lithium cobalt oxide batteries is lithium cobalt oxide (LiCoO2), while for ternary materials, it is lithium nickel cobalt manganese oxide (Li(NiCoMn)O2). The precursor product of ternary composite positive electrode materials is made from nickel salts, cobalt salts, and manganese salts, with the ratio of nickel, cobalt, and manganese adjustable according to practical needs. Batteries using ternary materials for the positive electrode are generally safer compared to lithium cobalt oxide batteries. Both lithium cobalt oxide and ternary materials are excellent positive electrode materials for lithium batteries, but their chemical characteristics differ. As a result, their application fields also vary based on these different chemical properties.
The positive electrode material for lithium cobalt oxide batteries is lithium cobalt oxide (LiCoO2), while for ternary materials, it is lithium nickel cobalt manganese oxide (Li(NiCoMn)O2). The precursor product of ternary composite positive electrode materials is made from nickel salts, cobalt salts, and manganese salts, with the ratio of nickel, cobalt, and manganese adjustable according to practical needs. Batteries using ternary materials for the positive electrode are generally safer compared to lithium cobalt oxide batteries. Both lithium cobalt oxide and ternary materials are excellent positive electrode materials for lithium batteries, but their chemical characteristics differ. As a result, their application fields also vary based on these different chemical properties.
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The positive electrode material for lithium cobalt oxide batteries is lithium cobalt oxide (LiCoO2), while for ternary materials, it is lithium nickel cobalt manganese oxide (Li(NiCoMn)O2). The precursor product of ternary composite positive electrode materials is made from nickel salts, cobalt salts, and manganese salts, with the ratio of nickel, cobalt, and manganese adjustable according to practical needs. Batteries using ternary materials for the positive electrode are generally safer compared to lithium cobalt oxide batteries. Both lithium cobalt oxide and ternary materials are excellent positive electrode materials for lithium batteries, but their chemical characteristics differ. As a result, their application fields also vary based on these different chemical properties.
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