AC6760 LiNiCoMnO2 (NCM622) Double Side Coated Aluminum Foil

LiNiCoMnO2 (NCM622) Double Side Coated Aluminum Foil Description

LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) double-side coated aluminum foil is a high-performance cathode material for lithium-ion batteries, featuring aluminum foil coated on both sides with lithium nickel cobalt manganese oxide in a 6:2:2 ratio. This configuration offers high energy density, thermal stability, and suitability for applications in electric vehicles, energy storage systems, and portable electronics.

The electrode sheet has a total thickness of approximately 83 µm, with the aluminum foil substrate being 16 µm thick and each side coated with about 67 µm of active material. The area density of the double-sided coating is 22 ± 0.4 mg/cm², and the compaction density is 3.3 ± 0.1 g/cm³. The active material comprises 97.5% NCM622, with 1% polyvinylidene fluoride (PVDF) as a binder and 1.5% conductive carbon (Super P) to enhance electrical conductivity.

Electrochemically, the NCM622 cathode exhibits a specific capacity of approximately 170 mAh/g when cycled between 3.0 V and 4.3 V versus Li/Li⁺ at a 0.1C rate. This material has the lowest self-heating rate among various lithium-ion battery cathodes, improving safety and thermal stability. The layered structure allows for efficient lithium-ion intercalation and deintercalation, contributing to high capacity and long cycle life.

Overall, NCM622 double-side coated aluminum foil is a versatile and reliable cathode material, meeting the demands of various high-performance lithium-ion battery applications.

LiNiCoMnO2 (NCM622) Double Side Coated Aluminum Foil Applications

LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) double-side coated aluminum foil is a high-performance cathode material for lithium-ion batteries, featuring aluminum foil coated on both sides with lithium nickel cobalt manganese oxide in a 6:2:2 ratio. This configuration offers high energy density, thermal stability, and suitability for applications in electric vehicles, energy storage systems, and portable electronics.

The electrode sheet has a total thickness of approximately 83 µm, with the aluminum foil substrate being 16 µm thick and each side coated with about 67 µm of active material. The area density of the double-sided coating is 22 ± 0.4 mg/cm², and the compaction density is 3.3 ± 0.1 g/cm³. The active material comprises 97.5% NCM622, with 1% polyvinylidene fluoride (PVDF) as a binder and 1.5% conductive carbon (Super P) to enhance electrical conductivity.

Electrochemically, the NCM622 cathode exhibits a specific capacity of approximately 170 mAh/g when cycled between 3.0 V and 4.3 V versus Li/Li⁺ at a 0.1C rate. This material has the lowest self-heating rate among various lithium-ion battery cathodes, improving safety and thermal stability. The layered structure allows for efficient lithium-ion intercalation and deintercalation, contributing to high capacity and long cycle life.

Overall, NCM622 double-side coated aluminum foil is a versatile and reliable cathode material, meeting the demands of various high-performance lithium-ion battery applications.

LiNiCoMnO2 (NCM622) Double Side Coated Aluminum Foil Packaging

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden Box, or Customized.

Kindly review the packaging details provided for your reference.

Manufacturing Process

1.       Testing Method

(1)    Chemical Composition Analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.

(2)    Mechanical Properties Testing - Includes tensile strength, yield strength, and elongation tests to assess material performance.

(3)    Dimensional Inspection - Measures thickness, width, and length to ensure adherence to specified tolerances.

(4)    Surface Quality Inspection - Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic examination.

(5)    Hardness Testing - Determines material hardness to confirm uniformity and mechanical reliability.

Please refer to the SAM testing procedures for detailed information.

LiNiCoMnO2 (NCM622) Double Side Coated Aluminum Foil FAQs

Q1. Why is NCM preferred for high-energy applications?

NCM offers high energy density (>400 Wh/kg) and customizable electrochemical properties. For example, NCM811 delivers ~250 mAh/g capacity, ideal for electric vehicles (EVs). Advanced modifications, such as sodium phytate coatings, enhance thermal stability, delaying thermal runaway by 45% (from 125.9°C to 184.8°C).

Q2. What are the challenges of high-nickel NCM?

High nickel content (e.g., NCM811) increases energy density but risks oxygen loss at high voltages (>4.5V), causing phase transitions and microcracks. Solutions include high-entropy doping (Ti, Mg, Nb) to reduce strain (<0.5%) and coatings to suppress oxygen release.

Q3. What future advancements are expected?

Cobalt-free designs: Using Al or rare earths to reduce costs.

Ultra-high voltage: Stable operation up to 4.9V with advanced electrolytes.

Hybrid systems: NCM-based supercapacitors for rapid energy delivery.

Related Information

1.       Common Preparation Methods

The preparation of LiNi₀.₆Co₀.₂Mn₀.₂O₂ (NCM622) double-side coated aluminum foil cathode electrodes involves several key steps to ensure optimal electrochemical performance. Initially, the active material, NCM622 powder, is synthesized through a co-precipitation method. In this process, nickel, cobalt, and manganese sulfate solutions are mixed in a molar ratio of 60:20:20. Aqueous sodium hydroxide or potassium hydroxide is then added to the solution to precipitate the hydroxide precursor Ni₀.₆Co₀.₂Mn₀.₂(OH)₂. The resulting precipitate is filtered, washed, and dried at temperatures ranging from 80°C to 200°C for 4 to 8 hours. Subsequently, the dried precursor undergoes a heat treatment in an atmospheric furnace at 300°C to 600°C for 8 to 15 hours to obtain the oxide form. This oxide is then mixed with lithium salts, such as lithium carbonate, in a molar ratio of 1:1 to 1:1.15, along with flux additives like B₂O₃ or LiCl to facilitate the solid-state reaction. The mixture is thoroughly homogenized and subjected to a two-step sintering process: first at 700°C to 800°C in an air stream for 6 to 8 hours, followed by sintering at 850°C to 950°C in an oxygen stream for 8 to 15 hours. After sintering, the product is cooled, pulverized, and sieved through a 325-mesh screen to obtain the final NCM622 powder.

This powder is then mixed with conductive carbon (Super P) and a binder like polyvinylidene fluoride (PVDF) in a weight ratio of 8:1:1 using N-methyl-2-pyrrolidone (NMP) as the solvent to form a homogeneous slurry. The slurry is coated onto both sides of an aluminum foil current collector using techniques like doctor blade coating. The coated foil is dried at 70°C for 3 hours to remove the solvent and then calendered to enhance electrode density and adhesion. Finally, the electrode sheet is punched into 15 mm diameter discs, which are used as cathodes in coin cell assembly for lithium-ion batteries.

This meticulous preparation process ensures that the NCM622 double-side coated aluminum foil cathodes possess the necessary structural and electrochemical properties for high-performance lithium-ion batteries used in various applications, including electric vehicles and portable electronics.