Lithium Iron Phosphate (LiFePO4) Coated Aluminum Foil

Technical Specification:

1. Material Composition:
   • Active Material: Lithium Iron Phosphate (LiFePO₄).
     • Known for excellent thermal stability, long cycle life, and high safety.
   • Substrate: Aluminum Foil.
     • Acts as a lightweight and conductive current collector for the cathode.
   • Binder: Polyvinylidene fluoride (PVDF) or equivalent.
     • Ensures strong adhesion of LiFePO₄ particles to the aluminum substrate.
   • Conductive Additives: Carbon black or conductive polymers.
     • Enhances electrical conductivity across the active material.
2. Physical Dimensions:
   • Aluminum Foil Thickness: Typically 12–20 µm.
   • Coating Thickness: Customizable, commonly 50–100 µm per side.
   • Width: Adjustable based on application (common widths range from 50 mm to 300 mm).
   • Roll Length: Typically 50–1000 meters per roll.
3. Electrochemical Properties:
   • Capacity: Specific capacity of 140–160 mAh/g.
   • Voltage: Stable operating range of 3.0–3.6 V.
   • Cycle Life: Exceptional cycle stability, often exceeding 2000–5000 cycles.
   • Thermal Stability:
     • Highly resistant to thermal runaway, making it one of the safest cathode materials.
4. Mechanical and Thermal Properties:
   • Adhesion Strength:
     • Strong bonding between LiFePO₄ and the aluminum substrate to withstand mechanical stresses.
   • Thermal Resistance:
     • Operates reliably in a wide temperature range: -20°C to 60°C, with some designs supporting up to 80°C.
5. Surface Properties:
   • Uniform Coating:
     • Ensures consistent electrochemical performance across the electrode surface.
   • Porosity:
     • Optimized for effective electrolyte infiltration and ion transport.
6. Packaging:
   • Delivered in rolls, protected with layers to prevent contamination or damage during handling and transport.

Applications:

1. Primary Applications:
   • Cathode Material for Lithium-Ion Batteries:
     • Used in rechargeable batteries for reliable and long-lasting energy storage.
2. Industries:
   • Battery Manufacturing:
     • Integral for producing lithium-ion batteries for a variety of applications.
   • Electric Vehicles (EVs):
     • Ideal for EV battery packs due to its high safety and long cycle life.
   • Energy Storage Systems (ESS):
     • Widely used in grid-scale renewable energy storage solutions.
   • Consumer Electronics:
     • Applied in devices requiring stable and long-lasting power sources.
3. Advantages for Applications:
   • High Safety:
     • LiFePO₄’s excellent thermal and chemical stability reduces risks of thermal runaway.
   • Long Cycle Life:
     • Suitable for applications requiring frequent charging and discharging.
   • Stable Voltage:
     • Provides consistent power output over its operational life.
   • Ease of Manufacturing:
     • Pre-coated aluminum foil simplifies production processes, ensuring uniform quality.
4. Specialized Uses:
   • Renewable Energy Integration:
     • Ideal for solar and wind energy storage systems.
   • High-Cycle Applications:
     • Perfect for tools, EVs, and devices requiring repeated charge-discharge cycles.
   • Battery Research and Development:
     • Used in experimental setups to evaluate new electrolyte and separator technologies.
5. Challenges and Mitigation:
   • Lower Energy Density:
     • Compared to other cathode materials like NMC or NCA, LiFePO₄ has slightly lower energy density.
       • Solution: Prioritize its use in applications where safety and longevity are critical.
   • Conductivity Concerns:
     • LiFePO₄ has lower inherent conductivity.
       • Solution: Incorporate conductive additives like carbon black or conductive polymers in the formulation.

Summary:

The Lithium Iron Phosphate (LiFePO₄) Coated Aluminum Foil is a high-performance cathode material for lithium-ion batteries. With its excellent safety profile, long cycle life, and thermal stability, it is widely used in electric vehicles, energy storage systems, and consumer electronics. The pre-coated aluminum foil simplifies manufacturing processes, ensuring uniform performance and quality in large-scale production.