Carbon-coated Aluminum Foil Battery Current Collector Semi-solid Sodium Battery Scientific Research Laboratory Material
Product Overview
Carbon-coated aluminum foil (CCAF) is a high-performance current collector engineered for semi-solid-state sodium batteries (SSSBs) and next-gen energy storage systems. By integrating a nano-carbon layer (5–20 μm) onto ultra-thin aluminum foil (8–30 μm), it addresses critical challenges of interfacial resistance, sodium dendrite growth, and electrode delamination in SSSBs.
Key Specifications
| Parameter |
Specification |
| Base Material |
High-purity Al foil (≥99.6%) |
| Coating Composition |
Conductive carbon black/graphite + polymer binder |
| Coating Thickness |
1–8 μm (single/double-sided) |
| Surface Roughness (Rz) |
≤3.0 μm (glossy finish) |
| Areal Resistance |
<0.5 Ω·cm² (vs. >2 Ω·cm² for bare Al) |
| Thermal Stability |
Stable up to 180°C (SSSB processing) |
Material Advantages
-
Semi-Solid-State Battery Optimization
- Reduces interfacial impedance by >50% vs. bare Al foil in sulfide/oxide-based SSSBs.
- Enhances sodium-ion diffusion kinetics (tested at >5 mA/cm² current density).
-
Sodium Battery Performance
- Compatible with Na₃V₂(PO₄)₃ (NVP) and hard carbon electrodes.
- Mitigates Na dendrites via uniform current distribution (demonstrated >500 cycles at 1C).
-
Research-Grade Customization
- Surface treatments: Lithiophilic coatings (e.g., CuO nanoneedles) for hybrid Li/Na systems.
- Thickness variants: Sub-8μm Al foil for ultra-high-energy-density prototypes.
Applications
- Semi-Solid-State Sodium Batteries: Lab-scale prototyping of 200+ Wh/kg cells.
- Hybrid Electrodes: Dual-ion (Li⁺/Na⁺) battery research.
- Dry Electrode Manufacturing: Solvent-free processing for SSSBs.
Storage: Dry environment (<30% RH) at 25°C.
