Silicon Nanopowder (Si, 99.9%, 1-3 um, Polycrystalline)

Technical Specifications

1. Product Name: Silicon Nanopowder
   • Chemical Formula: Si
   • CAS Number: 7440-21-3
   • Structure: Polycrystalline
2. Purity
   • Grade: 99.9% (metal basis)
   • Impurities: ≤0.1% (trace elements, oxides, or non-metallic substances)
3. Particle Size
   • Range: 1–3 µm (micron scale)
   • Particle Size Distribution: Uniformly distributed, confirmed by laser diffraction or microscopy
4. Morphology
   • Shape: Irregular polycrystalline particles, characteristic of the production process
   • Surface Area: Lower than nanoscale silicon powders but higher than bulk silicon
5. Crystal Structure
   • Type: Polycrystalline
   • Crystallinity: Composed of multiple small crystallites with grain boundaries
6. Physical and Chemical Properties
   • Color: Gray to black powder
   • Density: Lower than bulk silicon due to interstitial spaces in polycrystalline form
   • Melting Point: ~1,414 °C
   • Boiling Point: ~3,265 °C
   • Electrical Properties: Semiconductor with a bandgap of ~1.12 eV, applicable in various technologies
7. Packaging and Storage
   • Standard Packaging: Sealed in airtight containers under inert gas (e.g., argon) or vacuum-sealed
   • Storage Conditions: Store in a cool, dry environment, away from moisture and oxidizing agents
   • Shelf Life: Stable when properly stored; surface oxidation may develop over time
8. Safety and Handling
   • Hazards:
     • Fine silicon powder can ignite when exposed to strong oxidizers or high heat.
     • Dust inhalation may cause respiratory irritation.
   • Recommended Protective Measures:
     • Use gloves, goggles, and respirators during handling.
     • Operate in a controlled or inert environment to minimize risks.

Applications

1. Energy Storage
   • Lithium-Ion Battery Anodes: Polycrystalline silicon microparticles are explored for use in battery anodes due to their enhanced capacity compared to traditional graphite.
   • Energy Solutions: Suitable for hybrid applications requiring silicon-based energy storage materials.
2. Electronics and Semiconductors
   • Photovoltaics: Polycrystalline silicon powders are fundamental materials in the manufacturing of solar cells. Their cost-effectiveness makes them ideal for large-scale solar panel production.
   • Semiconducting Devices: Used in fabricating transistors, diodes, and other microelectronic components.
3. Nanocomposites
   • Advanced Materials: Integrated into polymer or ceramic composites to enhance thermal, electrical, and mechanical properties.
   • Aerospace and Automotive: Lightweight silicon-based composites provide excellent strength-to-weight ratios.
4. Catalysis
   • Chemical Catalysts: Polycrystalline silicon is used in chemical industries as a catalyst or catalyst support for specialized reactions.
   • Photocatalysis: Employed in solar-driven chemical processes for environmental applications like water purification.
5. Coatings and Surface Engineering
   • Thermal Coatings: Used in high-temperature coatings for enhanced heat resistance and thermal conductivity.
   • Wear-Resistant Coatings: Improves surface durability and mechanical strength in industrial machinery.
6. 3D Printing and Additive Manufacturing
   • Powder-Based Printing: Silicon micropowders are used in certain 3D printing applications requiring materials with semiconducting or high-temperature properties.
7. Optoelectronics
   • Infrared Applications: Silicon’s transparency in the IR spectrum makes it suitable for sensors, IR detectors, and specialized optical devices.
   • Light-Emitting Devices: Polycrystalline silicon is explored for photonic applications, including quantum-based optical components.
8. Research and Development
   • Material Science: Used extensively in research to develop next-generation electronic and energy materials.
   • Prototype Development: Ideal for testing silicon-based systems in lab environments.

SEO-Optimized Benefits of Silicon Nanopowder (Si, 99.9%, 1-3 µm, Polycrystalline)

• High purity (99.9%) and polycrystalline structure make it an excellent choice for solar energy and electronics.
• Wide applications in lithium-ion batteries, photovoltaics, nanocomposites, and catalysis.
• Cost-effective alternative for industries seeking scalable semiconductor and coating solutions.
• Essential in renewable energy research and optical device manufacturing, making it a versatile material for the future.