Composite Aluminum Foil Current Collector 3μm ATOMFAIR®

$599.00

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.

Double-sided aluminum/polymer/aluminum current collector with ≥4 μm foil layers, 3 μm functional layer, ≥165 MPa strength, and ≤0.05 Ω/sq resistance.

Double-Sided Composite Aluminum Foil Current Collector

Product Type: Composite aluminum foil current collector

Research-grade laboratory product

Product Overview

Double-sided composite aluminum foil current collector uses a symmetric three-layer structure with aluminum foil, a 3 μm polymer functional layer and aluminum foil.

The composite foil specification includes mechanical, electrical, electrochemical, electrolyte-stability and thermal-shutdown performance parameters for battery current collector evaluation.

Performance Features

Structure is ≥4 μm aluminum foil + 3 μm polymer functional layer + ≥4 μm aluminum foil.
Longitudinal tensile strength is specified at ≥165 MPa and longitudinal elongation at ≥6%.
Interlayer peel strength is specified at ≥1.2 N/mm.
Surface resistance is specified at ≤0.05 ohm/sq and oxidation potential at ≥4.8 V vs Li/Li.

Technical Specifications

Parameter	Specification / Available Values
Atomfair Model	AF-ACAL-2SIDE
Structure	≥4 μm aluminum foil + 3 μm polymer functional layer + ≥4 μm aluminum foil
Longitudinal tensile strength	≥165 MPa
Longitudinal elongation	≥6%
Interlayer peel strength	≥1.2 N/mm
Thermal shrinkage	150 °C for 30 minutes: MD ≤0.9%, TD ≤0.7%
Surface roughness Ra	0.1-0.3 μm
Long-term heat resistance	≥120 °C
Volume resistivity	≤3*10 ohm.m at 25 °C
Surface resistance	≤0.05 ohm/sq
Oxidation potential	≥4.8 V vs Li/Li
Electrolyte stability	60 °C, 1 mol/L LiPF6 electrolyte immersion for 7 days; no delamination or corrosion; resistance change ≤5%
Thermal shutdown characteristic	Polymer layer melts and breaks the circuit at 120-280 °C

Quotation Confirmation: Confirm double-sided aluminum composite structure and target thickness.

Specification Confirmation: Confirm mechanical, electrical and electrolyte-stability requirements for the selected current collector.

Configuration Support: This row represents the symmetric aluminum/polymer/aluminum structure.

Quotation Note: Include target layer thicknesses, width and quantity for quotation support.

LABORATORY PROCUREMENT SUPPORT

For model selection, accessory matching, platform compatibility or configuration confirmation, contact our technical sales team.

E-MAIL: inquiry@atomfair.com

Manufacturer: Atomfair LLC

Brand: ATOMFAIR®

This composite current collector requires careful handling to preserve the polymer functional layer integrity and interlayer adhesion. Electrolyte compatibility and thermal shutdown performance must be verified under specified conditions to prevent delamination or electrical failure.

Electrolyte Stability: Immersion in 1 mol/L LiPF6 electrolyte at 60°C for 7 days must not cause delamination, corrosion, or resistance change exceeding 5%.
Thermal Shutdown: The polymer layer must melt and break the circuit when exposed to temperatures between 120°C and 280°C.
Mechanical Integrity: Interlayer peel strength must be at least 1.2 N/mm to prevent separation during battery assembly or cycling.
Surface Conductivity: Surface resistance must not exceed 0.05 ohm/sq to ensure adequate current collection.
Thermal Shrinkage: Thermal shrinkage after 30 minutes at 150°C must be ≤0.9% in MD and ≤0.7% in TD to maintain dimensional stability.

FAQ

What is the impact of the 3 μm polymer functional layer on the thermal shutdown behavior of this double-sided composite aluminum foil current collector?

The polymer layer is designed to melt and break the circuit between 120°C and 280°C, providing thermal shutdown capability. The 3 μm thickness ensures effective shutdown while maintaining interlayer peel strength ≥1.2 N/mm and surface resistance ≤0.05 ohm/sq.

Is this double-sided composite aluminum current collector compatible with standard LiPF6-based electrolytes used in lithium-ion batteries?

Yes. The product has been tested for electrolyte stability at 60°C in 1 mol/L LiPF6 electrolyte for 7 days with no delamination or corrosion and a resistance change ≤5%. This confirms compatibility with common lithium-ion battery electrolytes.

What temperature range should be avoided during processing or operation to prevent premature polymer melting?

The polymer functional layer in this current collector begins to melt and shut down the circuit at 120°C, with complete shutdown up to 280°C. Extended exposure above 120°C may trigger shutdown; the long-term heat resistance is rated at ≥120°C. For normal operation, temperatures should remain below 120°C to avoid activation.

Assessment

Double-sided composite aluminum foil current collector with symmetric Al/polymer/Al structure offers ≥165 MPa tensile strength, ≤0.05 ohm/sq surface resistance, and electrolyte stability (60°C, 7 days, ≤5% resistance change). Thermal shutdown between 120–280°C provides safety but limits high-temperature operation.

Positive

High mechanical and peel strength: Longitudinal tensile strength ≥165 MPa and interlayer peel strength ≥1.2 N/mm ensure structural integrity during battery assembly and cycling.
Low surface resistance and high oxidation potential: Surface resistance ≤0.05 ohm/sq and oxidation potential ≥4.8 V vs Li/Li+ enable efficient electron transport and compatibility with high-voltage cathode materials.

Trade-offs

Thermal shutdown limits operating range: The polymer functional layer melts and breaks the circuit between 120–280°C, making the foil non-conductive at elevated temperatures and unsuitable for high-temperature battery applications.
Specification confirmation required before procurement: Target layer thickness, width, and mechanical/electrical requirements must be confirmed with the supplier before quotation, adding lead time and design-in effort.

Quality Standards & Performance Verification

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.

Shipping & Returns

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