NaCrO2

sodium chromite · sodium chromium dioxide

NaCrO2 is a stable, layered semiconducting oxide primarily investigated for its role as a cathode material in sodium-ion battery technology.

CrNaOLayered Sodium Transition-Metal Oxides
Crystal structure of NaCrO2
Ground-state structure · Materials Project
Overview

About sodium chromite

NaCrO2 belongs to the class of layered sodium transition-metal oxides, characterized by a semiconducting electronic structure. Its position on the convex hull indicates it is a thermodynamically stable phase, making it a robust subject for structural and electrochemical investigation.

This material is primarily studied for its potential in sodium-ion battery architectures. Due to its layered geometry, it facilitates the migration of sodium ions, which is a critical requirement for high-performance rechargeable energy storage systems.

At a glance

Key Properties

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

Band Gap

0.71–2.89 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

13
3 databases, 4 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting NaCrO2.

Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where sodium chromite is used.

Sodium-ion battery researchElectrochemical energy storageSolid-state ionics
Reference

Frequently Asked Questions

Common questions about sodium chromite, answered from cross-validated data.

What is NaCrO2?

NaCrO2 is a stable, layered semiconducting oxide primarily investigated for its role as a cathode material in sodium-ion battery technology.

More questions
What is NaCrO2 used for?
sodium chromite (NaCrO2) is used in sodium-ion battery research, electrochemical energy storage, and solid-state ionics.
What is the band gap of NaCrO2?
sodium chromite (NaCrO2) has a DFT-computed band gap of 0.71–2.89 eV across 13 reported structures.
Is NaCrO2 a metal, semiconductor, or insulator?
With a band gap up to 2.89 eV it is a semiconductor.
Is NaCrO2 thermodynamically stable?
Yes — sodium chromite (NaCrO2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of NaCrO2 are known?
13 structures of NaCrO2 are reported across 3 databases, spanning 4 distinct space groups.
How is NaCrO2 synthesized?
Literature-reported routes for NaCrO2 include solid state (4 procedures documented).
What elements does NaCrO2 contain?
sodium chromite (NaCrO2) contains Cr, Na, and O (3 elements).
Where does the data for NaCrO2 come from?
NaCrO2 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the layered sodium transition-metal oxides class.

Within the family of layered sodium transition-metal oxides, NaCrO2 offers a distinct electrochemical profile compared to siblings like NaCoO2 or NaNiO2. While many of its counterparts are extensively utilized in commercial battery development, NaCrO2 serves as a vital benchmark for understanding transition-metal redox behavior and structural stability in sodium-based intercalation systems.

Explore

Related Compounds

Other Layered Sodium Transition-Metal Oxides in the database.

NaFeO2Na2TiO3NaMnO2NaNiO2Na2Ti3O7NaCoO2Na2CoO3Na2FeO3Na3CoO3Na4Ti5O12Fe2Na8O8NaMn2O4
Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

Analyze NaCrO2 in the Lattice Graph platform

Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.

Explore the Platform →