Battery Materials, Cathode Active Materials, Charge Transport Layer Materials, Hole Transport Layer
Nickel (II) oxide, also known as NiOx, adopts a face-centre cubic crystalline structure. It has been used to produce frits, ferrites, and porcelain glazes. In recent years, nickel (II) oxide finds application as a hole-transport layer (HTL) material in perovskite solar cells. HTL of nickel (II) oxide processes high conductivity of 2.45 × 10-2 mS/cm and strong hole-extraction ability (7.01×10-3 cm2/V⋅s). This HTL layer enables the inverted perovskite solar cell to achieve a powder conversion efficiency (PCE) of 22.62%.
Nickel (II) oxide is also applied in supercapacitors. The supercapacitor fabricated from nickel (II) oxide nanopowder exhibits specific capacitance of 605 F/g at 5A/g and cyclic stability of 500 cycles.
As an energy material, nickel (II) oxide is used as a cathode material in batteries. A paper-based battery featuring nickel (II) oxide powder demonstrates a maximum current density of 1.94 mA/cm2 and power density of 1 mW/cm2.
| CAS Number | 1313-99-1 |
|---|---|
| Chemical Formula | NiO |
| Full Name | Nickel (II) oxide |
| Molecular Weight | 74.69 g/mol |
| Synonyms | Nickel monoxide, Nickel oxide (NiO), Bunsenite, Oxonickel, NiOx |
| Classification or Family | Perovskite solar cells, Batteries, Supercapacitors, Energy materials, HTL materials |
| Average Particle Size | 8–18 nm |
|---|---|
| Purity | 99.5% |
| Specific Surface Area | > 95 m2/g |
| Bulk Density | 0.8 g/cm3 |
| True Density | 6.8 g/cm3 |
| Melting Point | 1984 °C |
| Appearance | Dark grey powder |
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