Silicon nanoparticles are of high interest in battery applications as they can be used as anode active material for lithium-based batteries. Reason for this is silicon’s ability to hold up to 10 times as many lithium ions by weight as graphite, which is today’s state-of-the-art anode active material, and therewith promise to increase energy density and fast-charging capabilities batteries. In its form as nanoparticles, they are well suited as precursor for highly engineered anode active materials.
Our nanoparticles are agglomerated to dry micron-sized silicon powder with nanostructured surface. Dust-free for enhanced safety and eased handling. Dispersing in suitable solvent may allow for deagglomeration into silicon nanoparticles.
Cycling performance of silicon nano particles in LiB
| Product name |
Silicon nano powder |
| CAS-Nummer |
7440-21-3 |
| MDL |
MFCD00085311 |
| EC |
231-130-8 |
| Si-Purity |
>99 wt% |
| Particle size distribution (PSD) |
D50 = 100 – 350 nm
Adjustable; other particle sizes available on request |
| Color |
Brown-grey |
| Form |
Nanoparticles in dispersion
(Examples: iso-propanol, ethanol, paraffin, ethylene glycol, ethyl benzol, propylene glycol, acetone. Other solvents possible) |
| Solid content |
– |
| Appearance |
flakes |
| Melting point |
1410°C |
| Evaporation temperature |
2355°C |
| Synonymous |
nano silicon, nano particles |
| Function |
Precursor, intermediate product, raw material, anode active material, anode material, capacity increasing, fast charging capability |
| Specific surface (BET) |
10-100 m²/g (dependent on particle size distribution) |
| Specific discharge capacity (mAh/g on active material level) |
3100 mAh /g @ 1/20 C; 0.01-1.2 V
2400 mAh/g @ 0.5 C; 0.01-1.2 V |
| Initial coulombic efficiency |
>85% |
| Material density |
2,3 g/cm³ |
Typical particles size distribution of dispersible micron sized agglomerates
| Run |
1 |
2 |
Avg |
CV (%) |
| D10 (µm) |
2.000 |
1.999 |
2.000 |
0.03536 |
| D100 (µm) |
17.18 |
17.18 |
17.18 |
0.0000 |
| D50 (µm) |
4.709 |
4.709 |
4.709 |
0.0000 |
| D90 (µm) |
9.810 |
9.822 |
9.816 |
0.08644 |
| D95 (µm) |
11.36 |
11.39 |
11.38 |
0.1865 |
| D98 (µm) |
12.65 |
12.69 |
12.67 |
0.2232 |
| D99 (µm) |
13.34 |
13.40 |
13.37 |
0.3173 |
| Mean (µm) |
5.309 |
5.312 |
5.311 |
0.03995 |
| Median (µm) |
4.709 |
4.709 |
4.709 |
0.0000 |
| Mode (µm) |
5.355 |
5.355 |
5.355 |
0.0000 |
| SpecificSurfaceArea (cm²/ml) |
15694 |
15697 |
15696 |
0.01352 |
| StDev (µm) |
2.976 |
2.984 |
2.980 |
0.1898 |
