CsO2

Cesium superoxide · Cesium hyperoxide

Cesium superoxide is a stable, semiconducting inorganic compound that serves as an important subject for structural and electronic materials research.

CsO
Crystal structure of CsO2
Ground-state structure · Materials Project
Overview

About Cesium superoxide

Cesium superoxide is a distinct inorganic compound characterized by its semiconducting electronic nature. As a member of the superoxide family, it occupies a stable position on the convex hull, indicating significant thermodynamic favorability under standard conditions.

With a high degree of structural diversity documented across multiple databases, this compound serves as a critical subject for fundamental materials science research. Its electronic properties make it a compelling candidate for studies involving charge transport and reactive oxygen species.

At a glance

Key Properties

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

Band Gap

0.41 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

102
3 databases, 14 space groups
Uses

Applications

Where Cesium superoxide is used.

Chemical oxygen generationLaboratory reagentSolid-state research
Reference

Frequently Asked Questions

Common questions about Cesium superoxide, answered from cross-validated data.

What is CsO2?

Cesium superoxide is a stable, semiconducting inorganic compound that serves as an important subject for structural and electronic materials research.

More questions
What is CsO2 used for?
Cesium superoxide (CsO2) is used in chemical oxygen generation, laboratory reagent, and solid-state research.
What is the band gap of CsO2?
Cesium superoxide (CsO2) has a DFT-computed band gap of 0.41 eV across 102 reported structures.
Is CsO2 a metal, semiconductor, or insulator?
With a band gap up to 0.41 eV it is a semiconductor.
Is CsO2 thermodynamically stable?
Yes — Cesium superoxide (CsO2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of CsO2 are known?
102 structures of CsO2 are reported across 3 databases, spanning 14 distinct space groups.
What elements does CsO2 contain?
Cesium superoxide (CsO2) contains Cs and O (2 elements).
Where does the data for CsO2 come from?
CsO2 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a standalone representative of its specific chemical class in this context, cesium superoxide serves as a primary reference point for understanding the behavior of alkali metal superoxides. Its stability and well-characterized structural landscape distinguish it as a robust model for exploring the interplay between ionic bonding and electronic semiconductivity in oxygen-rich inorganic systems.

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

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