Lithium Iron Phosphate (LFP) Cathode Sheet

Product: Lithium Iron Phosphate (LFP) Cathode Sheet (Single/Double-Sided Coated Aluminum Foil)
Application: Cathode Material for Lithium-ion Batteries
Product Overview: This product features a single-sided Lithium Iron Phosphate (LFP) coating on an aluminum current collector, processed with high-precision calendering. It is designed for high-performance lithium-ion battery research and development.

Key Specifications (Single-Sided Reference):
Sheet Dimensions: 241 mm L x 200 mm W
Coated Area Dimensions: 241 mm L x 175 mm W (12.5 mm uncoated margin on each side)
Coating Type: Single (Calendered)
Total Thickness: 70 – 90 µm
Current Collector Thickness: 16 µm
Coating Areal Density: 13.5 ± 0.2 mg/cm²
Current Collector Areal Density: 4.22 mg/cm²
Active Material Mass Percentage: 95.4% (Subject to actual product label)
Compaction Density: 2.0 ± 0.1 g/cm³
Specific Capacity: 150 mAh/g (0.1C)
Working Voltage Range: 2.5 V – 3.7 V
Packaging Unit: 5 sheets/pack

Usage Guidelines & Experimental Reference:
1. Electrode Cutting:
– Recommended Equipment: Disc Cutter (e.g., MSK-T10).
– Suggested Dimensions for Coin Cells: Diameter 12 mm or 14 mm.

2. Electrode Weighing & Calculation:
– Recommended Equipment: Precision Balance (e.g., Sartorius BCE Series).
– Active Material Mass Calculation Formula:
Mass_active = (Mass_electrode_disc (mg) – Area_disc (cm²) x Density_current_collector (mg/cm²)) x Ratio_active_material

3. Electrode Drying (Baking):
– Recommended Equipment: Vacuum Drying Oven (e.g., DZF-6050, 53L).
– Conditions: 60°C – 80°C for 2 – 4 hours under vacuum.

4. Coin Cell Assembly:
– Recommended Equipment: Single-Station Glove Box (e.g., VGB-10-I) and Hydraulic Coin Cell Crimper (e.g., MSK-110).
– Recommended Stacking Order (Negative to Positive Case):
Negative Case -> Lithium Chip -> Electrolyte -> Separator -> Electrolyte -> Electrode Disc -> Spacer -> Spring -> Positive Case.

5. Electrochemical Testing:
– Recommended Equipment: 8-Channel Battery Analyzer (e.g., 5 V 10mA).
– Setup: Input the calculated active material mass.
– Voltage Range: 2.5 V – 3.7 V (Testing Temperature: 23 ± 2°C).
– Current Calculation Formula (Example for 0.1C):
Current (mA) = Active Material Mass (mg) x 0.001 x Nominal Specific Capacity (mAh/g) x 0.1

Storage & Handling:
– Moisture Sensitivity: The product is sensitive to moisture. Store in a strictly sealed container within a glove box or a drying oven at 60°C.
– Shelf Life After Opening: To ensure optimal performance, use within one week of opening the sealed package.