Silicon Powder

CAS Number 7440-21-3

Anode Materials, Battery Materials, Green Energy Materials, Materials

Silicon Powder Available in Nanopowder and Micropowder Form

Applied as an anode material for Li-ion batteries

Overview | Product Information | Related Products

Silicon powder (CAS number 7440-21-3) is a semiconducting material with a bandgap of 1.12 eV. It was a dominant material during the late 20^th century to early 21^st century, referred to as the 'Silicon Age'.

Silicon powder recently draws attention on its application as an anode material for Li-ion batteries, owing to its high theoretical capacity of 3579 mAh/g (for Li₁₅Si₄). Si-based anodes show high energy density, limit growth of interphase, and are free of Li dendrites in solid state batteries.

Silicon powder can easily be engineered with other materials for high-performance batteries with a specific capacity of 913 mAh/g. Silicon powder can be further functionalized with vinylene carbonates and polyethylene oxides for enhanced stability.

Green Energy Material

For battery research

Different Particle Sizes

Nanopowder with D₅₀ of 90 nm and micropowder with D₅₀ of 10 µm

Worldwide Shipping

Quick and reliable shipping

High Purity

>99.5% High purity

General Information

CAS Number	7440-21-3
Chemical Formula	Si
Full Name	Silicon
Molecular Weight	28.09 g/mol
Synonyms	Si powder, Silicon particles, Silicon microparticles, Silicon nanoparticles
Classification or Family	Batteries, Photocatalysis, Fuel cells, Anode active materials, Solid-state batteries

Silicon Powder

Product Code	M2442A1	M2442B1
Purity	> 99.5%	> 99.99%
Average Particle Size	90 nm	10 µm
Crystal Structure	Polycrystalline	Diamond cubic
True Density	2.3 g/cm³	2.3 g/cm³
Specific Surface Area	45 – 80 m²/g	N/A
Appearance	Dark brown powder	Dark grey/blue powder

MSDS Documentation

Silicon powder MSDS Sheet

Pricing

Product Code	Product Details	Quantity	Price
M2442A1	Nanopowder, 90 nm	5 g	£120
M2442A1	Nanopowder, 90 nm	10 g	£195
M2442B1	Micropowder, 10 µm	10 g	£110
M2442B1	Micropowder, 10 µm	25 g	£225
M2442B1	Micropowder, 10 µm	50 g	£360

References

Dry pre-lithiation for graphite-silicon diffusion-dependent electrode for all-solid-state battery, J. Lee et al., Adv. Energy Mater., 13, 2300172 (2023); DOI: 10.1002/aenm.202300172.
Functionalized silicon particles for enhanced half- and full-cell cycling of Si-based Li-ion batteries, K. Araño et al., ACS Appl. Mater. Interfaces, 15 (8), 10554–10569 (2023); DOI: 10.1021/acsami.2c16978.
High-performance silicon carbon anodes based on value-added recycling strategy of end-of-life photovoltaic modules, Q. Liao et al., Energy, 281, 128345 (2023); DOI: 10.1016/j.energy.2023.128345.

Building better solid‐state batteries with silicon‐based anodes, Z. Sun et al., Interdiscip. Mater., 2, 635–663 (2023); DOI: 10.1002/idm2.12111.
Constructing pure Si anodes for advanced lithium batteries, M. Je et al., Acc. Chem. Res., 56, 2213–2224 (2023); DOI: 10.1021/acs.accounts.3c00308.
Nanostructured silicon photocatalysts for solar-driven fuel production, S. Putwa et al., iScience, 26, 106317 (2023); DOI: 10.1016/j.isci.2023.106317.

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