MgNiO2
MgNiO2 is a wide-gap insulating oxide catalyst that is theoretically stable and holds potential for use in electrochemical oxygen-evolution processes.

About MgNiO2
MgNiO2 is a complex oxide belonging to the oxygen-evolution catalyst class. Characterized by its wide-band-gap insulating nature, this material represents a significant area of study for researchers looking to optimize catalytic performance in electrochemical systems.
As a near-hull phase with multiple reported structures across databases, it is considered a viable candidate for synthesis. Its structural stability and electronic properties make it a compelling subject for those investigating the fundamental mechanisms of oxygen evolution and energy conversion technologies.
Key Properties
Cross-validated computational properties for MgNiO2, aggregated across 4 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.
Synthesis Routes
Literature-extracted synthesis procedures targeting MgNiO2.
Applications
Where MgNiO2 is used.
Frequently Asked Questions
Common questions about MgNiO2, answered from cross-validated data.
What is MgNiO2?
MgNiO2 is a wide-gap insulating oxide catalyst that is theoretically stable and holds potential for use in electrochemical oxygen-evolution processes.
What is MgNiO2 used for?
What is the band gap of MgNiO2?
Is MgNiO2 a metal, semiconductor, or insulator?
Is MgNiO2 thermodynamically stable?
How many polymorphs of MgNiO2 are known?
How is MgNiO2 synthesized?
What elements does MgNiO2 contain?
Where does the data for MgNiO2 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the diverse family of oxygen-evolution catalysts, MgNiO2 occupies a distinct position compared to more metallic or highly conductive members like LaNiO3 or LaMnO3. While compounds such as NiO are foundational to the class, MgNiO2 offers a unique insulating profile that contrasts with the more common lithium-based intercalation oxides like LiNiO2 or LiCoO2, positioning it as a specialized material for targeted catalytic applications.
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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