AC6754 LiNiCoMnO2 (NCM111) Double Side Coated Aluminum Foil

LiNiCoMnO2 (NCM111) Double Side Coated Aluminum Foil Description

The LiNiCoMnO2 (NCM111) Double-Side Coated Aluminum Foil is a composite electrode material engineered for high-performance lithium-ion batteries, characterized by its dual-sided architecture that integrates a uniform NCM111 (LiNiCoMnO2) cathode layer on both surfaces of an aluminum foil substrate. The aluminum foil, typically 10-20 μm thick, serves as a highly conductive current collector with low resistivity (~2.65×10^-8 Ω·m) and robust mechanical strength (>150 MPa tensile strength), ensuring structural integrity during electrode calendaring and cell assembly. Each NCM111 coating layer, ranging from 50-150 μm in thickness, is composed of a balanced transition metal oxide (Ni: Co: Mn = 1:1:1) crystallizing in a layered α-NaFeO2 structure (space group *R-3m*), which facilitates reversible lithium-ion intercalation with minimal lattice strain (~1-2%) and stable cycling performance.

The double-side coating process involves precise slurry deposition using slot-die or doctor-blade techniques, followed by drying and calendaring under controlled pressure (5-10 MPa) to achieve high electrode density (≥3.4 g/cm3) and uniform active material distribution. This configuration doubles the active surface area compared to single-side designs, significantly enhancing energy density (~320 mAh/g per electrode at 0.1C) while maintaining efficient electron transport across the aluminum substrate. The NCM111 layers are formulated with conductive additives (e.g., 3-5 wt% carbon black) and PVDF binders to optimize electronic percolation and adhesion, reducing interfacial charge-transfer resistance and enabling high-rate capability (e.g., 130 mAh/g at 2C).

Thermal stability is ensured by the material’s oxygen retention properties, with decomposition temperatures exceeding 200°C in inert atmospheres, and surface modifications such as trace dopants (e.g., Al, Mg) mitigate oxygen loss during high-voltage operation (up to 4.5V). The symmetrical coating design minimizes bending stress and delamination risks during electrode stacking or winding, while the aluminum foil’s corrosion-resistant surface prevents oxidative degradation in organic electrolytes. Advanced quality control measures, including laser thickness monitoring and peel strength testing, ensure coating uniformity (±1.5 μm tolerance) and mechanical durability (>2.0 N/cm adhesion strength), critical for large-scale battery manufacturing. This dual-side architecture balances high energy density, mechanical resilience, and electrochemical efficiency, positioning it as a versatile platform for next-generation energy storage technologies.

LiNiCoMnO2 (NCM111) Double Side Coated Aluminum Foil Applications

1. Electric Vehicles (EVs): NCM-based lithium-ion batteries dominate EV power systems due to their high specific capacity (~250 mAh/g) and energy density (>400 Wh/kg). High-nickel variants like NCM811 (LiNi0.8Co0.1Mn0.1O2) enhance driving range but require stabilization through surface modifications (e.g., sodium phytate coatings) and elemental doping (e.g., Ti, Mg, Nb) to mitigate thermal risks. Modified NCM811 cells exhibit a 45% increase in thermal runaway onset temperature (125.9°C→184.8°C) and maintain 95% capacity retention after 500 cycles. Recycled NCM111 materials achieve 70% capacity retention over 11,600 cycles, outperforming commercial counterparts.

2. Energy Storage Systems (ESS): NCM materials are critical for grid-scale storage and renewable energy integration. Lithium-rich manganese-based variants (e.g., Li1.2Ni0.2Mn0.6O2) deliver capacities exceeding 250 mAh/g and energy densities of 400 Wh/kg. Optimized compaction density (≥3.0 g/cm3) and coatings like LiYO2 improve structural integrity, enabling stable cycling in large-scale ESS applications.

3. Consumer Electronics: High-voltage NCM variants (up to 4.9V) with cerium oxide (CeO2) coatings suppress oxygen release and electrolyte decomposition, extending battery lifespan in smartphones, laptops, and wearables. These coatings stabilize cycling at extreme voltages, retaining over 80% capacity after 200 cycles.

4. Battery Recycling and Upcycling: Closed-loop recycling regenerates NCM from spent batteries, often outperforming virgin materials. Recycled NCM111 achieves 11,600 cycles with 70% capacity retention. Upcycled LiCoO2 converts to single-crystal NCM111, delivering 159 mAh/g (0.1C) and 82.1% retention after 200 cycles.

5. High-Power Devices: Nanostructured NCM materials (e.g., walnut-shaped nanosheets) enhance lithium-ion diffusion, achieving 131.23 mAh/g at 10C rates for power tools and hybrid vehicles. Ammonium sulfate-assisted synthesis optimizes pore structures, improving rate capability and cycle stability.

6. Supercapacitors and Hybrid Systems: NCM-derived heterostructures (e.g., NiCo-MOF@MnO2/AC electrodes) enable asymmetric supercapacitors with high specific capacitance (15.2 F/cm2) and energy density (1.191 mWh/cm2), bridging the gap between capacitors and batteries for rapid energy delivery.

LiNiCoMnO2 (NCM111) 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 (NCM111) 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.