Sodium nickel oxide (Na₂NiO₂) is a mixed-metal oxide semiconductor with a layered crystal structure that combines sodium and nickel cations in an oxide framework. This compound is primarily of research interest as a potential cathode material for sodium-ion batteries and energy storage devices, where its mixed-valence transition metal chemistry offers electronic conductivity and electrochemical activity. Compared to lithium-ion alternatives, sodium-based systems present cost and abundance advantages, making materials like Na₂NiO₂ attractive for grid-scale energy storage and portable applications where lithium supply constraints are a concern.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 80.44 | GPa | — | ||
Shear Modulus(G) | 36.67 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.02300 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | -1.362 | eV/atom | — |