Na2O2

Sodium peroxide · Sodium dioxide

Sodium peroxide is a stable, semiconducting inorganic compound widely used as a strong oxidizing agent and a reliable source of oxygen.

NaO
Crystal structure of Na2O2
Ground-state structure · Materials Project
Overview

About Sodium peroxide

Sodium peroxide is a thermodynamically stable compound that functions as a semiconducting oxide. Its chemical structure allows it to act as a potent reagent, playing a critical role in processes requiring strong oxidation or the rapid release of oxygen. The compound is highly valued for its ability to facilitate complex chemical transformations. Due to its stability and reactive nature, it is a key material in laboratory synthesis and industrial oxygen generation systems.

At a glance

Key Properties

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

Band Gap

1.74 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
1 DFT source

Structures

154
3 databases, 22 space groups
Uses

Applications

Where Sodium peroxide is used.

Chemical bleaching agentOxygen generation in closed-loop systemsLaboratory oxidizing reagentMetal extraction processes
Reference

Frequently Asked Questions

Common questions about Sodium peroxide, answered from cross-validated data.

What is Na2O2?

Sodium peroxide is a stable, semiconducting inorganic compound widely used as a strong oxidizing agent and a reliable source of oxygen.

More questions
What is Na2O2 used for?
Sodium peroxide (Na2O2) is used in chemical bleaching agent, oxygen generation in closed-loop systems, laboratory oxidizing reagent, and metal extraction processes.
What is the band gap of Na2O2?
Sodium peroxide (Na2O2) has a DFT-computed band gap of 1.74 eV across 154 reported structures.
Is Na2O2 a metal, semiconductor, or insulator?
With a band gap up to 1.74 eV it is a semiconductor.
Is Na2O2 thermodynamically stable?
Yes — Sodium peroxide (Na2O2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Na2O2 are known?
154 structures of Na2O2 are reported across 3 databases, spanning 22 distinct space groups.
What elements does Na2O2 contain?
Sodium peroxide (Na2O2) contains Na and O (2 elements).
Where does the data for Na2O2 come from?
Na2O2 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a primary alkali metal peroxide, this compound serves as a foundational reference material for understanding the reactivity and electronic behavior of oxygen-rich sodium compounds.

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

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