Solid State Lithium Battery Double-Sided Electrolytic Copper Foil 8-35μm with ≤3.0μm Surface Roughness

Price Negotiable

Price: 1-1000USD/Negotiable

MOQ: 100g

Delivery Time: 5-7 days

Brand: XWELL

Product Description

Product Overview

Our dual-sided glossy electrolytic copper foil is specifically engineered for solid-state lithium battery research and development applications. Available in thickness options from 8 μm to 35 μm, this ultra-smooth current collector provides exceptional mechanical stability under high-temperature solid-state electrolyte processing conditions while maintaining optimal flexibility for electrode fabrication.

Technical Specifications

Thickness	Surface Density (g/m²)	Tensile Strength (kg/mm²)	Elongation (%)	Surface Roughness (Rz)
8 μm	70-75	≥30 (RT), ≥20 (180°C)	≥5 (RT), >3 (180°C)	≤3.0 μm
9 μm	85-90	≥30, ≥20	>5, >3
12 μm	100-105	≥30, ≥20	>5, >3
15 μm	128-133	≥30, ≥20	>6, >3
20 μm	175-181	>30, ≥20	≥8, >3
25 μm	220-225	≥30, ≥20	>8, >4
30 μm	265-270	≥30, ≥20	≥9, >5
35 μm	285-290	≥30, ≥20	≥9, >5

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 processes

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 including CuO nanoneedles and 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 and 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 for specific research requirements