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ATOMFAIR® a roll of highly reflective metallic bronze copper foil displaying a smooth, glossy surface sheet extended flat.

ATOMFAIR® 4.5µm Double-Side Smooth Cu Foil R&D

Price range: $328.00 through $526.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Buy electrolytic copper foil price deals for lithium battery anode current collector R&D. 4.5µm ultra-thin double-side smooth grade. IATF 16949 compliant. Contact inquiry@atomfair.com.

SKU: AFMSBUYL133
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Description


ATOMFAIR® 4.5µm DOUBLE-SIDE SMOOTH COPPER FOIL

RESEARCH GRADE MATERIAL

Product Overview
The ATOMFAIR® 4.5µm Double-Side Smooth Electrolytic Copper Foil is an ultra-thin, premium-grade current collector engineered for next-generation high-energy-density lithium-ion battery anodes. Featuring exceptional copper purity of >99.98%, ultra-low surface roughness (RA <0.4µm on shiny side, 0.4µm on matte side), and zero pinhole defects, this foil delivers outstanding electrical conductivity and interfacial stability. With areal density of 39 g/m2, tensile strength of 36 Kg/m2, and proven oxidation resistance at 130°C/10min, it supports high-speed coating, calendering, and winding processes. Competitive electrolytic copper foil pricing makes it ideal for high-energy-density LIB R&D, pilot-scale production, and advanced battery validation.

Technical Specifications

PARAMETER DETAILS
1. Core Device & Electrochemical Design
Product Name 4.5µm Double-Side Smooth Electrolytic Copper Foil
Application LIB Anode Current Collector & Carrier
Thickness 4.5 µm
Thickness Tolerance 0 ~ 2 µm (Typical 0 ~ 1)
Standard Width 250 mm (Custom widths available upon request)
Packaging 2.5 kg/roll (~100 m/kg)
Surface Treatment Passivation protective layer (Double-side smooth)
2. Cathode (Positive Electrode) Parameters
Purity > 99.98% (Spec: >99.8%)
Pinhole Defects Zero pinholes
Areal Density 39 g/m2 (Spec: 36 ~ 42)
Mass Resistivity 0.168 Ω·g/m2 (Spec: <0.17)
Shiny Side Roughness RA 0.39 ~ 0.40 µm (Spec: <0.4)
Shiny Side Roughness RZ 1.6 µm (Spec: <3.0)
Matte Side Roughness RA 0.4 µm (Spec: 0.35 ~ 0.75)
Matte Side Roughness RZ 1.6 µm (Spec: <3.0)
3. Anode (Negative Electrode) Parameters
Tensile Strength 36 Kg/m2 (Spec: >26)
Elongation (Room Temperature) 4.2% (Spec: >3.5%)
Elongation (High Temperature) 5.5% (Spec: >4.0%)
Oxidation Resistance (130°C/10min) OK (Passed)
4. Separator & Physical Package Metrics
Storage Condition Dry, ventilated environment; controlled humidity; away from corrosive gases
Shelf Life 6 months under recommended storage conditions
Manufacturing Rules Processed under strict ISO 9001 / IATF 16949 compliance conditions
Alternative Options Explore our related catalog or custom dimensions. For urgent technical custom requests or bulk inquiries, please contact our support team.

Key Features & Advantages
  • Ultra-High Purity for Superior Conductivity: Copper purity of >99.98% with mass resistivity of 0.168 Ω·g/m2 minimizes internal battery resistance, significantly enhancing rate capability and discharge performance.
  • Ultra-Thin Design for Maximum Energy Density: At 4.5µm thickness with zero pinhole defects and tight thickness tolerance (0~1µm), this foil enables higher anode loading within limited cell space, delivering superior gravimetric and volumetric energy density.
  • Outstanding Mechanical Reliability: Tensile strength of 36 Kg/m2 with room-temperature elongation of 4.2% and high-temperature elongation of 5.5% ensures excellent processability during high-speed coating, calendering, and winding operations with minimal foil breakage.
  • Precision Dual-Side Low Roughness: Both shiny and matte sides feature precise roughness control (RA <0.4µm and 0.4µm respectively), ensuring robust active material adhesion while minimizing interfacial side reactions for extended cycle life.
  • Proven High-Temperature Oxidation Resistance: Passed 130°C/10min oxidation test (OK), demonstrating excellent stability during electrode drying and cell hot-pressing processes without surface oxidation or discoloration.

Performance Summary
Test Item Unit Specification Typical Value
Purity % >99.8 >99.98
Pinhole Defects count Zero Zero
Areal Density g/m2 36 ~ 42 39
Mass Resistivity Ω·g/m2 <0.17 0.168
Thickness Tolerance µm 0 ~ 2 0 ~ 1
Tensile Strength Kg/m2 >26 36
Elongation (RT) % >3.5 4.2
Elongation (HT) % >4.0 5.5
Oxidation Resistance (130°C/10min) – OK OK

APPLICATION SCOPE: High-energy-density lithium-ion battery anode current collector, next-generation battery R&D, pilot-scale production, academic research on ultra-thin copper foil performance, adhesion behavior, and electrochemical stability.
PACKAGING: 2.5 kg/roll with anti-static moisture-proof sealed packaging; vacuum-sealed with desiccant to prevent oxidation during storage and transport.
PRODUCT CODE: ATOMFAIR-CF-4.5DSS-250 (For internal material tracking, batch traceability, procurement, and quality management.)
IMPORTANT NOTICE: This ultra-thin 4.5µm copper foil is highly sensitive to mechanical damage and environmental contamination. Keep packaging sealed until use. Store in dry, cool, ventilated conditions away from acidic/corrosive environments. Handle with clean, non-abrasive tools and clean gloves to avoid surface contamination that may affect adhesion or electrochemical performance. Recommended storage temperature: 20±5°C, relative humidity < 60%.

TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com

Manufacturer Atomfair LLC
Brand ATOMFair

Store this anode in a cool, dry environment away from direct sunlight and moisture to prevent reactive decomposition. Operators must wear appropriate PPE including gloves and eye protection to avoid chemical contact.

  • Moisture Sensitivity: Exposure to moisture can cause degradation of the sodium component; maintain dry storage conditions.
  • Personal Protective Equipment: Use chemical-resistant gloves and safety goggles when handling the anode foil.

Follow these steps to ensure safe handling and storage of the anode material. Proper precautions mitigate chemical hazards and preserve material integrity.

Required Equipment: Personal Protective Equipment (gloves, goggles)

  1. Prepare PPE
    Don appropriate personal protective equipment including chemical-resistant gloves and safety goggles before handling the anode foil.
  2. Store Anode Properly
    Store the laminated foil in a cool, dry location away from direct sunlight and moisture to maintain its stability.
  3. Dispose of Waste
    Dispose of any unused or waste material in accordance with local regulations for sodium-containing compounds.

How does the single-side lamination design affect the anode's conductivity and mechanical stability compared to double-sided lamination?

The single-side lamination provides structural integrity while minimizing weight, and the anode is optimized for high conductivity to enhance ion transport. However, the trade-off between mechanical support and active material loading is not quantified in the available specifications; double-sided lamination would offer more active surface area but at the cost of increased weight and thickness.

What electrolyte systems are compatible with this Sodium Copper laminated foil anode, and are there any constraints regarding solvent or salt selection?

The anode is described as compatible with various electrolyte systems and battery designs, but no specific solvents, salts, or additive constraints are listed. Users are advised to empirically validate compatibility with their chosen electrolyte chemistry, as sodium-based anodes may require specific passivation layers or electrolyte formulations to prevent side reactions.

What are the specific storage and handling requirements to prevent oxidation or degradation of the sodium-copper laminated foil anode?

Store in a cool, dry place away from direct sunlight and moisture to minimize degradation. Handle using appropriate personal protective equipment (PPE) due to the reactive nature of sodium. Follow local regulations for disposal. No specific inert atmosphere or vacuum storage is mandated, but given the sodium content, moisture exclusion is critical for long-term stability.

The Atomfair Sodium Copper Single-Side Laminated Foil Anode provides high conductivity and lightweight construction for advanced battery research, though it requires controlled storage to prevent moisture degradation and may necessitate custom dimensions for specific system integration.

Positive

  • High Ionic Conductivity: Optimized for efficient ion transport, enhancing battery performance in high-rate and energy-density applications.
  • Lightweight Structural Integrity: Single-side lamination reduces weight while maintaining mechanical stability, suitable for portable and weight-sensitive energy storage designs.

Trade-offs

  • Moisture and Light Sensitivity: Requires storage in a cool, dry place away from direct sunlight and moisture to prevent material degradation, adding handling overhead.
  • Custom Sizing May Be Needed: Standard dimensions may not fit all battery architectures; customization for specific laminating requirements and thickness is available but implies additional lead time.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

Additional information

lenght

9μ*180mm 2kg, 9um*180mm 5kg, 9μ*200mm 5kg, 10μm*120mm 5kg, 12um*200mm 5kg, 12μ*200mm 2kg

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