Rb2CoO3

Rb2CoO3 is a thermodynamically stable semiconducting oxide used in the study of oxygen-evolution catalysis.

Crystal structure of Rb2CoO3
Ground-state structure · Materials Project
Overview

About Rb2CoO3

Rb2CoO3 is a semiconducting oxide that sits on the convex hull, indicating significant thermodynamic stability. As a member of the oxide oxygen-evolution catalyst family, it is a subject of interest for researchers investigating efficient electrochemical water splitting and energy conversion processes.

The compound is characterized by its distinct electronic structure, which plays a critical role in its catalytic activity. Its presence in multiple structural databases highlights its importance as a model system for understanding how alkali-metal cobaltates function within complex catalytic environments.

At a glance

Key Properties

Cross-validated computational properties for Rb2CoO3, aggregated across 3 databases.

Band Gap

0.24–0.77 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

15
3 databases, 6 space groups
Uses

Applications

Where Rb2CoO3 is used.

Oxygen-evolution catalysis researchElectrochemical water splitting studiesSolid-state chemistry research
Reference

Frequently Asked Questions

Common questions about Rb2CoO3, answered from cross-validated data.

What is Rb2CoO3?

Rb2CoO3 is a thermodynamically stable semiconducting oxide used in the study of oxygen-evolution catalysis.

More questions
What is Rb2CoO3 used for?
Rb2CoO3 is used in oxygen-evolution catalysis research, electrochemical water splitting studies, and solid-state chemistry research.
What is the band gap of Rb2CoO3?
Rb2CoO3 has a DFT-computed band gap of 0.24–0.77 eV across 15 reported structures.
Is Rb2CoO3 a metal, semiconductor, or insulator?
With a band gap up to 0.77 eV it is a semiconductor.
Is Rb2CoO3 thermodynamically stable?
Yes — Rb2CoO3 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Rb2CoO3 are known?
15 structures of Rb2CoO3 are reported across 3 databases, spanning 6 distinct space groups.
What elements does Rb2CoO3 contain?
Rb2CoO3 contains Co, O, and Rb (3 elements).
Where does the data for Rb2CoO3 come from?
Rb2CoO3 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the oxide oxygen-evolution catalysts class.

Unlike the widely utilized lithium-based oxides such as LiCoO2 or LiMn2O4, which are staples in battery technology, Rb2CoO3 offers a unique structural perspective due to the larger ionic radius of rubidium. While perovskite-structured materials like LaMnO3 or LaNiO3 are frequently studied for their high-performance catalytic surfaces, Rb2CoO3 provides a different coordination environment that expands the chemical space available for designing advanced oxygen-evolution catalysts.

Explore

Related Compounds

Other Oxide Oxygen-Evolution Catalysts in the database.

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

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