Lithium Copper Composite Foil ≤20 μm for Solid-State Batteries with 500 Wh/kg Energy Density and 1000+ Cycle Life
Price:
1-1000USD/Negotiable
MOQ:
100g
Delivery Time:
5-7 days
Brand:
XWELL
Product Description
Advanced Lithium Copper Composite Foil for Solid-State Batteries
Lithium-copper (Li-Cu) composite foil represents a breakthrough anode material engineered for high-performance solid-state batteries. This hybrid structure combines ultra-thin lithium metal (≤20 μm) with a copper current collector to overcome critical challenges in battery technology.
Material Advantages
Dendrite-Free Lithium Deposition
Copper foil's lithiophilic surface enables uniform lithium plating and stripping, effectively eliminating dendrite formation. This technology achieves exceptional Coulombic efficiency exceeding 99.9% in symmetric cell configurations.
Mechanical Robustness
The copper substrate provides superior tensile strength (>100 MPa), preventing electrode deformation during cycling cycles. This design reduces lithium volume change by more than 80% compared to pure lithium foil.
Solid-State Compatibility
Specifically engineered for compatibility with Li₆PS₅Cl (sulfide) and LLZO (oxide) solid electrolytes. Maintains low interfacial impedance (
Manufacturing Scalability
Supports roll-to-roll production of ≤20 μm Li-Cu foils through thermal evaporation or electroplating processes. Projected manufacturing cost of $4.30/m² at gigafactory scale.
Performance Metrics: Energy density exceeding 500 Wh/kg with operational lifespan of more than 1,000 cycles.
Applications
- Solid-State Lithium Batteries for electric vehicle powertrains, aerospace systems, and medical devices
- Hybrid Anodes including pre-lithiated silicon/carbon anodes with lithium-copper current collectors
- Research and development for prototyping high-energy-density solid-state battery systems
Storage Requirements
Must be stored in argon-sealed environments with oxygen and moisture levels below 0.1 ppm at 20°C.
Technical Specifications
| Parameter | Specification Limit |
|---|---|
| Lithium Purity (% Li) | ≥99.9% |
| Impurities (maximum percentage) | |
| Potassium (K) | ≤0.005 |
| Sodium (Na) | ≤0.020 |
| Calcium (Ca) | ≤0.020 |
| Iron (Fe) | ≤0.005 |
| Silicon (Si) | ≤0.008 |
| Aluminum (Al) | ≤0.005 |
| Nickel (Ni) | ≤0.003 |
| Copper (Cu) | ≤0.004 |
| Magnesium (Mg) | ≤0.010 |
| Chlorine (Cl) | ≤0.006 |
| Nitrogen (N) | ≤0.020 |
| Lead (Pb) | ≤0.003 |
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Company
GUANGDONG XWELL TECHNOLOGY CO., LTD.
Location
Room 316, Building 3, No. 801, Qiaoxing Avenue, Xiaoluo Village, Shatou Street, Panyu District, Guangzhou
Contact Person
Sammy Qin