K3NiO2
K3NiO2 is a thermodynamically stable, semiconducting oxide material utilized in the study of oxygen-evolution catalysis.
About K3NiO2
K3NiO2 is a semiconducting oxide that holds a distinct position within the family of oxygen-evolution catalysts. Its status as a thermodynamically stable phase on the convex hull underscores its structural integrity, making it a subject of interest for researchers investigating robust catalytic materials for energy storage and conversion applications. The compound benefits from a well-documented structural profile, supported by multiple entries across major materials databases. Its electronic properties suggest potential utility in electrochemical systems where stable, semiconducting oxides are required to facilitate efficient oxygen-evolution reactions. By providing a stable framework for nickel-oxygen interactions, it serves as a foundational material for exploring advanced catalytic mechanisms.
Key Properties
Cross-validated computational properties for K3NiO2, aggregated across 3 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.
Applications
Where K3NiO2 is used.
Frequently Asked Questions
Common questions about K3NiO2, answered from cross-validated data.
What is K3NiO2?
K3NiO2 is a thermodynamically stable, semiconducting oxide material utilized in the study of oxygen-evolution catalysis.
What is K3NiO2 used for?
What is the band gap of K3NiO2?
Is K3NiO2 a metal, semiconductor, or insulator?
Is K3NiO2 thermodynamically stable?
How many polymorphs of K3NiO2 are known?
What elements does K3NiO2 contain?
Where does the data for K3NiO2 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Unlike the widely utilized transition metal oxides such as NiO or the layered lithium-based cathodes like LiNiO2 and LiCoO2, K3NiO2 features a unique stoichiometry that sets it apart from the more common perovskite-related structures like LaNiO3 or BiFeO3. While many of its class members are optimized for high-capacity battery performance, K3NiO2 is primarily distinguished by its thermodynamic stability and specific electronic character, offering a different structural approach to oxygen-evolution catalysis compared to the more conventional manganese or cobalt-based oxides.
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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