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Customized service available
DLX
Bright
ISO9001/ CE/ROHS
10kg
10-25 days
Battery,Power,Industry,Energy
One Side Pure Cu, One Side Pure Ni
Product Description
Our Cu-Ni composite strip is a high-performance copper-nickel clad material specifically developed as battery tab material for lithium-ion batteries. With one side pure copper and one side pure nickel, it combines the exceptional electrical and thermal conductivity of copper with the superior weldability and corrosion resistance of nickel.
This high conductivity Cu-Ni composite strip significantly reduces internal resistance and heat generation compared with pure nickel tabs, while the nickel surface enables reliable spot welding, ultrasonic welding, and laser welding. It is the preferred choice for EV battery modules, energy storage systems, power tools, and high-current consumer electronics requiring efficient and durable battery interconnects.
Dual-Side Optimized Design: Pure copper core/side for maximum current capacity and heat dissipation; pure nickel surface for excellent weldability and oxidation resistance.
Battery-Industry Proven Performance: Specially engineered as battery tab material to improve cell-to-module efficiency, support higher C-rates, and extend battery pack lifespan.
Proven Industrial Scale: 12,000 m² facility dedicated to dissimilar metal bonding, ensuring stable supply for multi-ton global contracts.
20-Year Quality Heritage: Backed by two decades of metallurgical expertise and a "Zero-Defect" manufacturing philosophy.
Total Quality Control: Integrated manufacturing from high-purity melting to precision slitting, ensuring 100% batch-to-batch consistency.
Specification
Attribute | Specification |
|---|---|
Availability | In Stock / Ready to Ship |
Material Structure | Bimetal: Pure Nickel (Ni) on Pure Copper (Cu) |
Bonding Interface | Permanent Metallurgical Fusion (Zero Delamination) |
Dispatch Time | Within 24-48 Hours for Stock Items |
Shipping Time | 7-20 Business Days (Global Express) |
MOQ | 10kg for Stock Items; 100kg for Wholesale OEM Contracts |
Material Layer | Ni (%) | Cu (%) | Fe (%) | C (%) | S (%) |
|---|---|---|---|---|---|
Pure Nickel Side | 99.6 min | 0.10 max | 0.10 max | 0.05 max | 0.005 max |
Pure Copper Side | - | 99.90 min | 0.005 max | - | 0.003 max |
Property | Pure Nickel (Ni) | Pure Copper (Cu) | Ni-Cu Bimetal (2:8) |
|---|---|---|---|
Density (g/cm³) | 8.89 | 8.96 | ~8.94 |
Conductivity (% IACS) | ~22 | 100 - 101 | 85 - 90 |
Thermal Conductivity (W/m·K) | 90.7 | 390 - 400 | ~325 |
Bond Strength (MPa) | - | - | ≥ 150 |
Features & Applications
One side pure copper + one side pure nickel structure optimized for high conductivity battery tab applications
Exceptional electrical conductivity that dramatically reduces resistance and heat generation versus pure nickel tabs
Superior thermal conductivity for effective heat dissipation in high-drain battery packs
Excellent weldability on the nickel side supporting spot, ultrasonic, and laser welding processes
EV Battery Interconnects: Main current-carrying tabs for 18650, 21700, and 46800 cylindrical cells in high-performance automotive packs.
Energy Storage Systems (BESS): Durable interconnects for prismatic cells in residential and grid-scale storage containers.
High-Drain Power Tools: Vibration-resistant battery tags for cordless industrial tools and professional e-mobility.
BMS Components: Transition pads and sensing leads for Battery Management Systems that require high signal fidelity.
DLX Advantage
Changzhou DLX Alloy Co., Ltd. stands as a pillar of manufacturing stability in the global energy materials industry. With a sprawling 12,000 m² facility, we have successfully integrated the entire manufacturing value chain—from high-purity melting and advanced metallurgical bonding to precision finishing and automated slitting. For over 20 years, we have prioritized technical transparency and supply chain resilience, ensuring that our Cu-Ni composite materials meet the most rigorous international industrial standards and audit requirements.
We also offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.
FAQ
A: Pure nickel has relatively low conductivity (~22% IACS). Our Cu-Ni composite strip offers significantly higher conductivity (typically 60–80% IACS depending on copper ratio), resulting in lower resistance, less heat generation, and improved battery efficiency and safety.
A: It is primarily optimized for negative electrode tabs and high-current interconnects due to the combination of copper conductivity and nickel weldability. Suitability for positive tabs depends on the specific battery chemistry and design—please consult us for confirmation.
A: Yes. We offer flexible copper-to-nickel thickness ratios, total thickness, width, and temper so you can balance maximum conductivity with welding performance according to your battery tab requirements.
A: The pure nickel surface provides excellent spot, ultrasonic, and laser weldability similar to pure nickel, while the copper layer carries the high current, giving you the best of both materials.
