Copper Foil Solid-state Lithium Battery Double-sided Light Research Soft Electrolytic Copper Foil Ultra-thin Electrode Current Collector Rolled Copper Foil
Product Overview
Our dual-sided glossy electrolytic copper foil is engineered specifically for solid-state lithium battery R&D and prototyping. With thickness options from 8μm to 35μm, this ultra-smooth (Rz ≤3.0 μm) current collector delivers exceptional mechanical stability under high-temperature (180°C) solid-state electrolyte processing conditions while maintaining optimal flexibility for electrode fabrication.
Key Specifications
| Thickness |
Surface Density (g/m²) |
Tensile Strength (kg/mm²) |
Elongation (%) |
Surface Roughness (Rz) |
| 8μm |
70-75 |
≥30 (RT), ≥20 (180°C) |
≥5 (RT), >3 (180°C) |
≤3.0 μm |
| 9μm |
85-90 |
≥30, ≥20 |
>5, >3 |
<3.0 μm |
| 12μm |
100-105 |
≥30, ≥20 |
>5, >3 |
<3.0 μm |
| 15μm |
128-133 |
≥30, ≥20 |
>6, >3 |
<3.0 μm |
| 20μm |
175-181 |
>30, ≥20 |
≥8, >3 |
<3.0 μm |
| 25μm |
220-225 |
≥30, ≥20 |
>8, >4 |
<3.0 μm |
| 30μm |
265-270 |
≥30, ≥20 |
≥9, >5 |
<3.0 μm |
| 35μm |
285-290 |
≥30, ≥20 |
≥9, >5 |
<3.0 μm |
RT = Room Temperature (25°C)
Material Advantages
-
Solid-State Battery Optimization
- Ultra-smooth dual-sided finish (Rz ≤3.0 μm) minimizes interfacial voids with sulfide/oxide solid electrolytes
- Maintains mechanical integrity at solid-state processing temperatures (180°C tensile strength ≥20 kg/mm²)
-
Research-Grade Flexibility
- Soft temper design enables >9% elongation for wrinkle-free electrode laminates
- Compatible with solvent-free dry electrode manufacturing
-
Customization Options
- Antioxidant treatments: Enhanced stability for air-sensitive solid electrolytes
- Thickness variants: Sub-8μm foils available for ultra-high-energy-density prototypes
- Surface modifications: Lithiophilic coatings (CuO nanoneedles, Ag nanoparticles)
Applications
- Solid-State Battery Prototyping: Sulfide (Li₆PS₅Cl) and oxide (LLZO) electrolyte integration
- Lithium Metal Anode Substrates: Dendrite suppression via uniform current distribution
- Flexible Battery Research: Foldable/stretchable current collector development
Technical Notes
- Certification: Compliant with GB/T standards (test methods per manufacturer specifications)
- Packaging: Vacuum-sealed rolls with desiccant (100m/roll standard)
- Customization: Surface density and antioxidant properties negotiable
