AgO
Silver(I,III) oxide · Silver peroxide
AgO is a stable, semiconducting mixed-valence oxide of silver widely utilized for its high energy density in advanced battery technologies.
About Silver(I,III) oxide
Silver(I,III) oxide is a distinct inorganic compound characterized by its mixed-valence state, where silver atoms occupy two different oxidation environments within the crystal lattice. As a thermodynamically stable material situated on the convex hull, it exhibits robust structural integrity that makes it a reliable candidate for electrochemical applications.
This semiconducting oxide is primarily recognized for its high energy density and efficient charge-transfer capabilities. Its ability to undergo specific reduction processes allows it to function effectively in demanding power storage environments where consistent performance and stability are required.
Key Properties
Cross-validated computational properties for Silver(I,III) 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.
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.
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.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
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.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
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 |
| P42/mmc (No. 131) | tetragonal | 0.00 | 0.0000 | -0.223 | — |
| P42/mmc (No. 131) | tetragonal | 0.00 | 0.0000 | -0.223 | — |
| — | — | 0.00 | 0.0000 | -0.315 | — |
| C2/c (No. 15) | monoclinic | 0.00 | 0.0002 | -0.223 | — |
| C2/c (No. 15) | monoclinic | 0.00 | 0.0008 | -0.223 | — |
| 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 | 0.08 | 0.0213 | -0.202 | — |
| I41/a (No. 88) | tetragonal | 0.19 | 0.0251 | -0.198 | — |
| P21/c (No. 14) | monoclinic | 0.12 | 0.0423 | -4.296 | 7.62 |
Applications
Where Silver(I,III) oxide is used.
Patent Landscape
5 patents reference AgO or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 4835077 | AgO cathode material | — | — |
| 6001508 | AgO cathode battery | — | — |
| 5389469 | AgO battery, and material | — | — |
| 3953239 | Al-AgO primary battery | — | — |
| 4056664 | Electrochemical cell having an AgO electrode discharging at an Ag.sub.2 O voltage level | — | — |
Frequently Asked Questions
Common questions about Silver(I,III) oxide, answered from cross-validated data.
What is AgO?
AgO is a stable, semiconducting mixed-valence oxide of silver widely utilized for its high energy density in advanced battery technologies.
What is AgO used for?
What is the band gap of AgO?
Is AgO a metal, semiconductor, or insulator?
Is AgO thermodynamically stable?
What is the crystal structure of AgO?
How many polymorphs of AgO are known?
What elements does AgO contain?
Where does the data for AgO come from?
How It Compares
As a singular, highly studied compound in its category, AgO serves as a benchmark for silver-based oxides. Its status as a thermodynamically stable semiconductor distinguishes it from less stable or more transient metal oxide phases, positioning it as a primary choice for applications requiring high electrochemical reliability.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
Analyze AgO in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →