KCoO2

KCoO2 is a thermodynamically stable semiconducting oxide utilized as a catalyst for oxygen-evolution reactions in electrochemical applications.

Crystal structure of KCoO2
Ground-state structure · Materials Project
Overview

About KCoO2

KCoO2 is a semiconducting oxide that holds a significant position within the family of oxygen-evolution catalysts. As a thermodynamically stable phase located on the convex hull, it represents a robust material choice for electrochemical research and catalytic surface studies. Its structural complexity is highlighted by a high number of reported experimental and theoretical configurations. This compound is primarily investigated for its potential to facilitate efficient oxygen-evolution reactions, making it a subject of interest for developing next-generation energy storage and conversion technologies.

At a glance

Key Properties

Cross-validated computational properties for KCoO2, aggregated across 3 databases.

Band Gap

0.12–1.32 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

32
3 databases, 10 space groups
Uses

Applications

Where KCoO2 is used.

Oxygen-evolution catalysisElectrochemical energy conversionMaterials science research
Reference

Frequently Asked Questions

Common questions about KCoO2, answered from cross-validated data.

What is KCoO2?

KCoO2 is a thermodynamically stable semiconducting oxide utilized as a catalyst for oxygen-evolution reactions in electrochemical applications.

More questions
What is KCoO2 used for?
KCoO2 is used in oxygen-evolution catalysis, electrochemical energy conversion, and materials science research.
What is the band gap of KCoO2?
KCoO2 has a DFT-computed band gap of 0.12–1.32 eV across 32 reported structures.
Is KCoO2 a metal, semiconductor, or insulator?
With a band gap up to 1.32 eV it is a semiconductor.
Is KCoO2 thermodynamically stable?
Yes — KCoO2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of KCoO2 are known?
32 structures of KCoO2 are reported across 3 databases, spanning 10 distinct space groups.
What elements does KCoO2 contain?
KCoO2 contains Co, K, and O (3 elements).
Where does the data for KCoO2 come from?
KCoO2 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the oxide oxygen-evolution catalysts class.

Within the diverse class of oxygen-evolution catalysts, KCoO2 serves as a distinct potassium-based counterpart to lithium-based systems like LiCoO2 and LiNiO2. While many of its siblings, such as the perovskite-structured LaMnO3 or the spinel LiMn2O4, are widely utilized for their specific electronic properties, KCoO2 offers a unique structural alternative that expands the chemical space available for optimizing catalytic performance in alkaline environments.

Explore

Related Compounds

Other Oxide Oxygen-Evolution Catalysts in the database.

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

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