Li8FeO6

Li8FeO6 is a semiconducting lithium-iron oxide being investigated as a potential catalyst for oxygen-evolution reactions.

Crystal structure of Li8FeO6 (orthorhombic, Cmc21 (No. 36))
Ground-state structure · Materials Project
Overview

About Li8FeO6

Li8FeO6 is a complex lithium-iron oxide classified within the family of oxygen-evolution catalysts. As a semiconducting material, it exhibits electronic properties that make it a compelling candidate for fundamental studies in electrochemical energy conversion and storage systems.

Its status as a near-hull stable phase suggests that it is a viable target for experimental synthesis and characterization. The compound is part of a growing body of research into lithium-rich transition metal oxides, which are being explored for their potential to facilitate efficient catalytic reactions at the electrode interface.

At a glance

Key Properties

Cross-validated computational properties for Li8FeO6, aggregated across 3 databases.

Band Gap

0.60 eV
Range across DFT structures · ground state: narrow gap

Energy Above Hull

0.050 eV/atom
Best (lowest) across sources

Stability

Near Hull
3 DFT sources

Structures

9
3 databases, 2 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of Li8FeO6. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

0.89 / 1.00
Trust tier: high

Hull Spread

0.027 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, oqmd

Space Group Consensus

Mixed (most: Cmc21 (No. 36))
Crystallography

Reported Structures

Lowest-energy structures reported for Li8FeO6, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
Cmc21 (No. 36)orthorhombic0.000.0248-5.5312.33
P-1 (No. 2)triclinic0.360.0293-5.5262.68
——0.000.0499-1.893—
P-1 (No. 2)triclinic0.590.0517-1.984—
P-1 (No. 2)triclinic0.600.0844-1.951—
P-1 (No. 2)triclinic———2.82
Cmc21 (No. 36)orthorhombic———2.33
P-1 (No. 2)triclinic———2.82
Cmc21 (No. 36)orthorhombic———2.48
P-1 (No. 2)triclinic———2.68
Cmc21 (No. 36)orthorhombic———2.45
Uses

Applications

Where Li8FeO6 is used.

Oxygen-evolution catalysisElectrochemical researchEnergy storage material development
Reference

Frequently Asked Questions

Common questions about Li8FeO6, answered from cross-validated data.

What is Li8FeO6?

Li8FeO6 is a semiconducting lithium-iron oxide being investigated as a potential catalyst for oxygen-evolution reactions.

More questions
What is Li8FeO6 used for?
Li8FeO6 is used in oxygen-evolution catalysis, electrochemical research, and energy storage material development.
What is the band gap of Li8FeO6?
Li8FeO6 has a DFT-computed band gap of 0.60 eV across 9 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is Li8FeO6 a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 0.60 eV (a semiconductor). Measured gaps are typically larger.
Is Li8FeO6 thermodynamically stable?
Li8FeO6 has a lowest energy above hull of 0.050 eV/atom (near hull).
What is the crystal structure of Li8FeO6?
The reference structure of Li8FeO6 is orthorhombic symmetry, space group Cmc21 (No. 36).
What is the density of Li8FeO6?
The computed density of the ground-state structure of Li8FeO6 is 2.33 g/cm³.
How many polymorphs of Li8FeO6 are known?
9 structures of Li8FeO6 are reported across 3 databases, spanning 2 distinct space groups.
What elements does Li8FeO6 contain?
Li8FeO6 contains Fe, Li, and O (3 elements).
Where does the data for Li8FeO6 come from?
Li8FeO6 data is cross-referenced from materials_project, oqmd, jarvis, mpaloe.
Comparison

How It Compares

Within the oxide oxygen-evolution catalysts class.

Within the diverse landscape of oxygen-evolution catalysts, Li8FeO6 occupies a unique niche compared to more conventional layered oxides like LiCoO2 or LiNiO2. While materials such as BiFeO3 or LaMnO3 are widely recognized for their distinct magnetic and catalytic behaviors, Li8FeO6 represents a lithium-rich stoichiometry that challenges standard structural paradigms, offering a different electronic environment for catalytic activity.

Explore

Related Compounds

Other Oxide Oxygen-Evolution Catalysts in the database.

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)
  • 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)
  • jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
  • mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.

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