Silver Powder - Silver Nanoparticles


Silver powder (CAS number 7440-22-4) is a noble metal that exhibits high electrical conductivity (6.3 × 107 at 20 °C). It is commonly used in conductive paste for electronic devices. Silver nanoparticles are employed as antimicrobial agents, owing to their interactions with phosphate-containing compounds within cells and sulphur-containing proteins on membranes.
Recently, silver powder has extended its applications to include batteries. A zinc-air battery incorporating silver powder and graphene oxide as the air cathode demonstrates the maximum current density of 150 mA/cm2 at 0.44 V and peak powder of 68 mW/cm2 at 130 mA/cm2. When a silver powder-modified graphite-composite interlayer used as an anode, it results in a homogeneous formation of Li10Ag3 with minimal Li residue after discharge.
Silver powder also improves the solar-to-electric efficiency of an N719 dye-sensitized solar cell, enhancing it from 0.98% to 1.2%.
| CAS Number | 7440-22-4 |
|---|---|
| Chemical Formula | Ag |
| Full Name | Silver |
| Molecular Weight | 107.87 g/mol |
| Synonyms | Silver nanopowder, Silver nanoparticles, Ag powder, Ag nanoparticles |
| Classification or Family | Battery materials, DSSCs, Supercapacitors, Anode materials |
| Product Code | M2444A1 |
|---|---|
| Purity | > 99.99% |
| Average Particle Size | 18 nm |
| Specific Surface Area | 17 – 21 m2/g |
| Melting Point | Tm = 961.9 °C |
| Morphology | Spherical |
| Appearance | Grey powder |
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