AC6761 LiNiCoMnO2 (NCM811) Single Side Coated Cathode Electrode Disc

LiNiCoMnO2 (NCM811) Single Side Coated Cathode Electrode Disc Description

The LiNiCoMnO2 (NCM811) single side coated cathode electrode disc is a widely used cathode material in lithium-ion batteries, known for its high energy density and excellent electrochemical performance. The active material consists of lithium nickel cobalt manganese oxide with a composition ratio of 8:1:1, which provides a higher nickel content compared to other NCM variants, resulting in greater capacity and energy output. The single side coating is applied onto an aluminum foil substrate, typically about 15–20 microns thick, which serves as the current collector. The coated layer thickness usually ranges from 60 to 80 microns, optimized to balance capacity and mechanical stability.

This material exhibits a high specific capacity, typically around 190–200 mAh/g, when cycled between 3.0 V and 4.3 V versus Li/Li⁺ at low discharge rates (0.1C). Its layered crystal structure facilitates efficient lithium-ion intercalation and deintercalation, contributing to its high capacity and good rate capability. The increased nickel content enhances the energy density but requires careful management of thermal stability and cycling durability. To address this, the NCM811 cathode demonstrates improved thermal stability compared to earlier high-nickel materials and maintains capacity retention over extended cycling.

The electrode composition usually includes a small amount of conductive carbon (e.g., Super P) and binder (e.g., PVDF) to ensure good electrical conductivity and mechanical integrity. Overall, the NCM811 single side coated cathode electrode disc is an advanced material widely adopted in electric vehicles, portable electronics, and energy storage systems due to its high performance, energy density, and relative cost-effectiveness compared to cobalt-rich cathodes.

LiNiCoMnO2 (NCM811) Single Side Coated Cathode Electrode Disc Applications

LiNiCoMnO2 (NCM811) Single Side Coated Cathode Electrode Discs are primarily used in high-energy lithium-ion batteries for electric vehicles, where their high capacity and energy density help extend driving range. They are also widely applied in portable electronics such as smartphones, laptops, and tablets due to their stable cycling performance and lightweight design. Additionally, these cathodes are employed in energy storage systems for renewable energy integration and grid stabilization, benefiting from their long cycle life and safety characteristics. Overall, NCM811 cathodes are favored in applications demanding high power, long battery life, and efficient energy storage.

LiNiCoMnO2 (NCM811) Single Side Coated Cathode Electrode Disc 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 (NCM811) Single Side Coated Cathode Electrode Disc FAQs

Q1. Why is high nickel content used in NCM?

High-nickel variants (e.g., NCM811) boost energy density (~250 mAh/g) but face challenges like oxygen loss at high voltages (>4.5V) and structural degradation. Innovations like surface coatings (e.g., sodium phytate) and doping (e.g., Ti, Mg) mitigate these issues, improving thermal stability and cycle life.

Q2. How does NCM enhance battery safety?

Modifications such as sodium phytate coatings delay thermal runaway onset temperatures by 45% (125.9°C→184.8°C), while high-entropy doping reduces lattice strain (<0.5%) to prevent cracks. These strategies ensure structural integrity even under extreme conditions.

Q3. How does NCM compare to LFP or LCO cathodes?

NCM offers higher energy density than lithium iron phosphate (LFP) but requires stabilization for safety. Compared to lithium cobalt oxide (LCO), it reduces cobalt reliance and costs while maintaining performance.

Related Information

1.       Common Preparation Methods

The preparation of LiNiCoMnO2 (NCM811) single side coated cathode electrode discs begins with the synthesis of the NCM811 active material, typically produced through a co-precipitation method where nickel, cobalt, and manganese salts are mixed in an 8:1:1 molar ratio to form a hydroxide precursor. This precursor is then thoroughly washed, dried, and calcined at high temperatures, usually between 700°C and 900°C, in the presence of lithium sources such as lithium carbonate to form the final layered oxide structure. After the synthesis, the NCM811 powder is mixed with conductive carbon additives and a binder like polyvinylidene fluoride (PVDF) in a suitable solvent such as N-methyl-2-pyrrolidone (NMP) to create a uniform slurry. This slurry is then coated onto one side of an aluminum foil current collector using techniques like doctor blade coating or slot-die coating. The coated foil is dried to remove the solvent, followed by calendaring to enhance the density and adhesion of the electrode layer. Finally, the coated foil is cut or punched into discs of the desired size, ready for assembly into lithium-ion battery cells. This process ensures the cathode exhibits optimal mechanical strength, electrical conductivity, and electrochemical performance suitable for high-capacity battery applications.