La2NiO4
lanthanum nickelate · LNO
La2NiO4 is a semiconducting lanthanum nickel oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.
About lanthanum nickelate
La2NiO4 is a semiconducting oxide that functions as a key material in the field of oxygen-evolution catalysis. Its unique electronic configuration and metastable nature make it a subject of significant interest for researchers aiming to optimize catalytic efficiency in electrochemical devices. The material is characterized by a high degree of structural diversity, as evidenced by the numerous reported configurations found in scientific databases. This versatility allows it to be tuned for specific catalytic environments, bridging the gap between fundamental solid-state chemistry and practical energy conversion applications.
Key Properties
Cross-validated computational properties for lanthanum nickelate, 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.
Synthesis Routes
Literature-extracted synthesis procedures targeting La2NiO4.
Applications
Where lanthanum nickelate is used.
Frequently Asked Questions
Common questions about lanthanum nickelate, answered from cross-validated data.
What is La2NiO4?
La2NiO4 is a semiconducting lanthanum nickel oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.
What is La2NiO4 used for?
What is the band gap of La2NiO4?
Is La2NiO4 a metal, semiconductor, or insulator?
Is La2NiO4 thermodynamically stable?
How many polymorphs of La2NiO4 are known?
How is La2NiO4 synthesized?
What elements does La2NiO4 contain?
Where does the data for La2NiO4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
Within the broad class of oxide oxygen-evolution catalysts, La2NiO4 occupies a distinct position compared to perovskite-related structures like LaNiO3 or LaMnO3. While many of its siblings exhibit highly stable, symmetric crystal lattices, La2NiO4 often presents as a metastable phase that offers unique surface reactivity. This makes it a compelling alternative to more conventional transition metal oxides like NiO or layered lithium-based oxides such as LiCoO2, particularly in applications where specific surface oxygen exchange kinetics are required.
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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