Silicon-Carbon Anode Powder (Si-C COMPOSITE)

Description

1. Product Overview

NMP (N-Methyl-2-pyrrolidone) Electronic Grade is a high-purity, polar aprotic solvent engineered for mission-critical microfabrication and lithium-ion battery manufacturing. It serves as the primary process solvent in electrode slurry preparation for EV batteries and advanced photoresist stripping in semiconductor production. The key value proposition is its exceptional solvency power combined with ultra-low ionic and particulate contamination, directly enabling higher energy density, lower defect rates, and improved production yields. Strategically, as global EV and chip demand accelerates, securing a consistent supply of Electronic Grade NMP is a non-negotiable lever for supply chain resilience and manufacturing competitiveness.

2. Key Specifications & Technical Characteristics

• Chemical Composition: N-Methyl-2-pyrrolidone (C₅H₉NO)

• Purity Grade: Electronic Grade – ≥99.9% (GC assay)

• Physical Form: Clear, colorless, hygroscopic liquid

• Key Trace Impurities (Max):

  • Water (KF): ≤100 ppm

  • Amines: ≤5 ppm

  • Chloride (Cl⁻): ≤1 ppm

  • Metals (Na, Fe, Ca, Cu, Cr, Zn): ≤10 ppb each

  • Particles (≥0.5 µm): ≤500 particles/mL

• Density: 1.028 g/cm³ (20°C)

• Boiling Point: 202°C

• Flash Point: 91°C (closed cup)

• Packaging Options: 200 L epoxy-lined steel drums, 1,000 L IBC totes, and isotanks for bulk delivery

• Shelf Life: 18 months in original unopened container under nitrogen blanket (to prevent moisture ingress)

3. Core Industrial Applications

• Lithium-Ion Battery (EV & ESS) Manufacturing: Dissolves PVDF binder for cathode slurry (NMC, LFP) and anode slurry. Outperforms lower-grade solvents by eliminating gelation and reducing electrode coating defects, directly increasing cell cycle life and energy density by 3–5%.

• Semiconductor Photoresist Stripping: Used in high-temperature, post-etch resist remover formulations. Provides superior strip efficiency without corrosion on metal layers (Cu, Al, W) compared to alternative polar solvents like DMSO or DMF.

• Polymer Membrane Casting: Enables defect-free casting of polyimide, polysulfone, and PVDF membranes for water filtration and medical devices. Higher purity eliminates fisheyes and pinholes, reducing waste by up to 12%.

• Advanced Surface Cleaning: Removes high-viscosity fluxes, resins, and epoxy residues in precision optics and microelectronics assembly. Faster dissolution kinetics reduce cleaning cycle time by 20–30% versus standard NMP grades.

4. Competitive Advantages

• Quality Consistency: Statistical process control (SPC) with batch-to-batch CV <1.5% on all critical impurities; each shipment includes Certificate of Analysis (COA) with ICP-MS metal scan.

• Supply Reliability: Dual-source manufacturing sites (Asia & North America) with 10,000 MT annual capacity; buffer stock held in three regional hubs.

• Logistics Capability: Dedicated stainless steel isotank fleet prevents cross-contamination; real-time GPS tracking and temperature monitoring for all bulk shipments.

• Price Competitiveness: Direct procurement from precursor (GBL + MMA) integration – no spot market volatility; volume-based tiered pricing with quarterly fixed contracts available.

• Sustainability & Compliance: Full REACH and RoHS compliance; recyclable via distillation with >90% recovery rate (technical support provided). Zero PFAS, halogens, or SVHC.

• Technical Support: In-house applications lab offering free slurry compatibility testing, filtration optimization, and impurity root-cause analysis.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 MT (bulk liquid – isotank or flexitank)
  Note: Sample quantities (1–5 L or 200 L drum) available for qualification at higher unit cost.

• Loading Capacity:

  • 20 ft ISO tank container: 20 MT net

  • 40 ft container with flexitanks: 20 MT (maximum legal payload)

  • IBC totes (1,000 L each): 20 MT = 20 IBCs per 20 ft container