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Factory Wholesale Ni Cu Composite Sheet High Bond Strength Battery Tabs
High-quality factory wholesale Ni Cu composite sheet featuring one side pure nickel and one side pure copper with exceptional bond strength. Designed as premium battery tabs material, combining copper’s high conductivity with nickel’s outstanding spot-weldability for reliable performance in lithium-ion battery packs and energy storage systems.
- Overview
- Applications
- DLX Alloy
- FAQs
- Recommended Products
Product Overview of Ni Cu Composite Sheet
For modern lithium-ion batteries, the connection between the cell terminal and the busbar is a critical point of potential failure. DLX’s Ni Cu Composite Sheet is engineered specifically for high-reliability battery tabs. By permanently bonding pure nickel and pure copper at the atomic level, we provide a material that satisfies two opposing needs: the copper core provides the high conductivity required for rapid discharge, while the nickel surface facilitates a secure, low-impedance weld to the battery cell. Unlike traditional plated strips, our "High Bond Strength" composite ensures that the layers will never separate under thermal expansion or heavy vibration, protecting the integrity of the battery pack throughout its entire service life.
Product Features of Copper Nickel Clad Plate Supplier
1.Unrivaled Bonding Integrity: Our proprietary cold-rolling technology ensures a metallurgical bond that is so strong that in a T-peel test, the base copper will tear before the bond interface fails.
2.Exceptional Electrical Efficiency: The pure copper core ensures a high current carrying capacity with minimal voltage drop, preventing localized heating during 5C or 10C discharge rates.
3.Optimized Welding Surface: The high-purity nickel layer is engineered for high laser energy absorption, enabling stable welding even at lower energy settings to protect the cell's electrolyte.
4.High Flatness & Zero Camber: Every coil is processed to maintain absolute flatness, ensuring smooth, jam-free feeding into high-speed automated stamping equipment.
Custom Attributes
| Attribute | Specification |
|---|---|
| Material Structure | Bimetal: Pure Nickel (Ni) Clad on Pure Copper (Cu) |
| Corrosion Resistance | Excellent in Seawater, Brine, and High-Humidity Marine Air |
| Trial MOQ | Starting from 10kg (Stock-dependent) |
| Sample Policy | Samples Available (Flexible Trial Order Support) |
| Nickel Layer (Ni) | ≥ 99.6% Purity (Corrosion Barrier) |
| Copper Layer (Cu) | ≥ 99.9% Purity (High Conductivity / Antifouling) |
| Bonding Strength | Metallurgical Fusion (No separation in marine vibrations) |
| Certifications | ISO 9001:2015, SGS, RoHS, Marine MTC available |
| Delivery Time | 7-10 days for samples; 15-25 days for trial batches |
Physical Properties & Chemical Composition
| Physical Properties | Pure Nickel Layer | Pure Copper Layer | Bimetal (Avg. at 20% Ni) |
|---|---|---|---|
| Density (g/cm³) | 8.89 | 8.96 | ~8.94 |
| Conductivity (% IACS) | ~22 | 100 - 101 | 82 - 88 |
| Thermal Conductivity (W/m·K) | 90.7 | 390 - 400 | ~330 |
| Elastic Modulus (GPa) | 207 | 110 - 128 | 135 - 150 |
| 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 | - | 99.9 min | - | - | - |
Applications of Ni Cu Composite Sheet Bulk
1.Power Battery Cells: Connection tags for 18650, 21700, and 32700 cells in EV packs.
2.Consumer Electronics: Ultra-thin interconnects for high-drain laptop and drone batteries.
3.Energy Storage Systems (ESS): Transition tags for prismatic cells in residential and industrial storage modules.
4.Power Tools: High-vibration resistant connectors for brushless motor battery packs.
5.Medical Devices: Reliable, corrosion-resistant interconnects for high-fidelity medical backup power.
Key advantage：
✔Risk-Free Trial: Test our material performance with Samples tailored to your thickness requirements.
✔Low Entry Barrier: Unlike large mills, we support small-batch trial orders (10kg+) to aid your R&D process.
✔Direct Factory Price: Save up to 20% compared to international distributors by purchasing directly from our 12,000 m² Changzhou facility.
✔Full Data Transparency: Every trial batch comes with a detailed MTC covering bonding integrity and chemical purity.
⭐Company Intro - DLX Alloy
Changzhou DLX Alloy Co., Ltd. is not just a high-volume manufacturer; we are a specialized metallurgical partner for global marine engineering projects. We believe that innovation in the offshore sector begins with accessible material trials. Unlike large-scale mills that require multi-ton commitments, DLX has established a dedicated "Trial & Sample Unit" to support engineers and R&D departments in the North American and European maritime sectors. With a 12,000 m² facility and 20 years of focus on bimetallic bonding, we provide the industrial scale required for mass production while maintaining the flexibility of a boutique laboratory. At DLX, we lower the barrier to advanced material adoption, fostering a collaborative path toward safer and more durable marine infrastructure.
Quality & Standards : DLX implements a zero-defect quality system for battery materials. We utilize online ultrasonic testing to ensure 100% bond integrity and automated optical inspection (AOI) for surface defects. All materials are fully compliant with RoHS 3, REACH, and UL standards for electronic insulation and safety.
Forms: sheet, strips, or custom pre-cut tags.
Packaging: Vacuum-sealed anti-oxidation VCI bags inside reinforced wooden crates.
MOQ: 10kg for standard 2:8 ratio stock; 20kg for custom thickness or specific tempers.
Documentation: Full MTC (EN10204 3.1), RoHS compliance certificate, and Bond Strength Report.
FAQs:
Q1: What is the structure of this Ni Cu composite sheet?
A: It features one side pure nickel and one side pure copper, metallurgically bonded with high bond strength. This design provides nickel’s excellent spot-weldability on one face and copper’s high conductivity on the other, ideal for battery tabs.
Q2: Why choose Ni Cu composite sheet over pure nickel for battery tabs?
A: The copper layer dramatically increases electrical and thermal conductivity (often 3–4× better than pure nickel), reducing resistance and heat generation in high-current applications, while the nickel side maintains superior weldability and lower material cost.
Q3: How strong is the bond between the nickel and copper layers?
A: Our factory wholesale Ni Cu composite sheet is produced with advanced cladding technology that creates a high-strength metallurgical bond. It resists delamination under bending, stamping, welding, and thermal cycling, ensuring long-term reliability in battery tabs.
Q4: Can the thickness ratio and dimensions be customized?
A: Yes. We offer full customization of nickel-to-copper thickness ratios, total thickness, width, temper (soft, half-hard, etc.), and coil or sheet form to match your specific battery tab and connector requirements.
