Silicon Oxide Anode Powder (SiOx)

Description

1. Product Overview
This product is a high-purity (99.6% minimum) nickel strip, precision-engineered for ultrasonic or resistance tab welding in lithium-ion battery pack assembly. Its primary industrial application is joining battery cells to busbars or protection circuit modules (PCM) in electric vehicle (EV) and energy storage systems (ESS). The key value proposition is maximized electrical conductivity with minimal contact resistance, directly improving battery pack cycle life and thermal stability. Strategically, as global lithium battery production scales to 5 TWh by 2030, reliable, low-resistance nickel tab welding is non-negotiable for preventing cell-to-pack failure and ensuring fire-safe operation.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Ni99.6 (≥99.6% Nickel), with controlled impurities: C ≤0.05%, Si ≤0.10%, Cu ≤0.10%, Fe ≤0.10%, S ≤0.005%

• Purity Grade: Battery-grade, 99.6% minimum (typical 99.7%+)

• Physical Characteristics:

  • Form: Precision slit coil or cut-to-length strips

  • Thickness: 0.05mm – 0.30mm (±0.003mm tolerance)

  • Width: 2mm – 200mm (±0.05mm)

  • Surface: Degreased / Bright annealed (oxide-free), one-side or two-side polished for weld consistency

  • Tensile Strength: 350–450 MPa

  • Electrical Resistivity: ≤9.5 µΩ·cm @ 20°C

• Packaging Options: Anti-static plastic reels (5–50kg), vacuum-sealed moisture barrier bags, or export-grade wooden spools with desiccant

• Shelf Life: 24 months in original unopened packaging (store 15–25°C, <60% RH)

3. Core Industrial Applications

• Primary Industries: EV battery pack manufacturing (cylinder cells: 18650, 21700, 4680); stationary energy storage systems (ESS); power tools; medical device batteries; aerospace battery modules.

• Operational Use Cases:

  • Series/parallel welding of nickel‑plated steel to aluminum cell caps

  • Connecting nickel tabs to PCM/PCB for overcharge/discharge protection

  • Busbar integration for high‑rate discharge packs (>3C)

• Performance Advantage over Alternatives: Vs. pure aluminum or plated steel, Ni99.6 eliminates galvanic corrosion with nickel‑coated steel cells; provides 3× higher weld strength (vs. copper) while avoiding copper diffusion embrittlement. End result: >5,000 weld cycles without tip sticking, ≤15% lower contact resistance than Ni98 grades, enabling 8–12% higher pack energy efficiency.

4. Competitive Advantages

• Quality Consistency: 100% eddy current tested for thickness uniformity; batch‑level SEM/EDS verification of surface oxide; certifiable to IATF 16949:2016 batch traceability.

• Supply Reliability: Multiple ISO 9001:2025 certified mills with 30,000 MT annual dedicated battery nickel strip capacity; safety stock held in three continental hubs (Asia, EU, NA).

• Logistics Capability: 48‑hour dispatch for standard dimensions; export crating compliant with ISPM-15; door‑to‑door with real‑time inland tracking.

• Price Competitiveness: Direct mill contracting removes 2–3 intermediary margins; fixed‑price quarterly options via LME nickel futures hedging.

• Sustainability: 92% recycled content available upon request; RoHS and REACH compliant; Scope 3 emissions data provided per strip coil.

• Technical Support: Free weld parameter recommendations (amplitude, force, energy) for your specific cell model; on‑call failure analysis lab.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 metric tons (MT) per standard thickness/width combination (mixed sizes within a container allowed at +5% cost).

• Bulk Loading Capacity:

  • 20‑foot container: 20 MT (net)

  • 40‑foot high cube container: 25 MT (net – with optimized coil stacking)

• Lead Time: 21–28 days from LC/TT confirmation (expedite to 14 days at +8% premium).