AgO
Silver(II) oxide · Silver peroxide
Silver(II) oxide is a black inorganic compound that acts as a strong oxidizing agent. It is primarily utilized in specialized battery technologies where high energy density and stable discharge characteristics are required.
AgO
Overview
Key Properties
Cross-validated computational properties for Silver(II) oxide, aggregated across 6 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
0.12–0.18 eV
Range across DFT structures
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
0.000 eV/atom
Best (lowest) across sources
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
On hull (stable)
4 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
304
6 databases, 37 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AgO. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
1.00 / 1.00
Trust tier: high
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.000 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
3
jarvis, materials_project, nomad
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for AgO, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P42/mmc (No. 131) | tetragonal | 0.00 | 0.0000 | -4.338 | 6.73 |
| Cccm (No. 66) | orthorhombic | 0.00 | 0.0026 | -4.335 | 7.13 |
| C2/c (No. 15) | monoclinic | 0.00 | 0.0055 | -4.333 | 7.14 |
| C2/c (No. 15) | monoclinic | 0.00 | 0.0087 | -4.329 | 6.80 |
| P21/c (No. 14) | monoclinic | 0.12 | 0.0423 | -4.296 | 7.62 |
| I41/a (No. 88) | tetragonal | 0.18 | 0.0472 | -4.291 | 7.24 |
| F-43m (No. 216) | cubic | 0.00 | 0.3087 | -4.029 | 6.32 |
| P42/mmc (No. 131) | — | — | — | — | — |
| P21 (No. 4) | Monoclinic | — | — | — | 6.54 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.13 |
| P42/mmc (No. 131) | — | — | — | — | — |
| C2/c (No. 15) | — | — | — | — | — |
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting AgO.
Sol-Gel
Procedure available · ceder_solid_state
Uses
Applications
Where Silver(II) oxide is used.
Silver-zinc batteriesOxidizing agent in chemical synthesisSpecialized electronic power sources
Reference
Frequently Asked Questions
Common questions about Silver(II) oxide, answered from cross-validated data.
What is AgO?
Silver(II) oxide is a black inorganic compound that acts as a strong oxidizing agent. It is primarily utilized in specialized battery technologies where high energy density and stable discharge characteristics are required.
More questions
What is AgO used for?
Silver(II) oxide (AgO) is used in silver-zinc batteries, oxidizing agent in chemical synthesis, and specialized electronic power sources.
What is the band gap of AgO?
Silver(II) oxide (AgO) has a DFT-computed band gap of 0.12–0.18 eV across 304 reported structures.
Is AgO a metal, semiconductor, or insulator?
With a band gap up to 0.18 eV it is a semiconductor.
Is AgO thermodynamically stable?
Yes — Silver(II) oxide (AgO) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of AgO?
The lowest-energy reported polymorph of Silver(II) oxide (AgO) is tetragonal symmetry, space group P42/mmc (No. 131).
What is the density of AgO?
The computed density of the ground-state structure of Silver(II) oxide (AgO) is 6.73 g/cm³.
How many polymorphs of AgO are known?
304 structures of AgO are reported across 6 databases, spanning 37 distinct space groups.
How is AgO synthesized?
Literature-reported routes for AgO include sol-gel.
What elements does AgO contain?
Silver(II) oxide (AgO) contains Ag and O (2 elements).
Where does the data for AgO come from?
AgO data is cross-referenced from materials_project, jarvis, mpaloe, omat24, nomad.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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