CaMn4O8

CaMn4O8 is a semiconducting manganese oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.

Crystal structure of CaMn4O8
Ground-state structure · Materials Project
Overview

About CaMn4O8

CaMn4O8 is a semiconducting oxide that functions as a catalyst for the oxygen-evolution reaction. Its complex structure and electronic properties make it a subject of significant interest for researchers investigating sustainable energy conversion technologies.

As a metastable material, it represents a unique phase within the broader family of manganese-based oxides. The compound is primarily studied for its potential to facilitate efficient electrochemical water splitting, contributing to the development of advanced catalytic materials.

At a glance

Key Properties

Cross-validated computational properties for CaMn4O8, aggregated across 5 databases.

Band Gap

0.32–0.59 eV
Range across DFT structures

Energy Above Hull

0.029 eV/atom
Best (lowest) across sources

Stability

Metastable
4 DFT sources

Structures

22
5 databases, 6 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting CaMn4O8.

Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where CaMn4O8 is used.

Oxygen-evolution catalystsElectrochemical water splitting research
Reference

Frequently Asked Questions

Common questions about CaMn4O8, answered from cross-validated data.

What is CaMn4O8?

CaMn4O8 is a semiconducting manganese oxide used primarily as a catalyst for oxygen-evolution reactions in electrochemical systems.

More questions
What is CaMn4O8 used for?
CaMn4O8 is used in oxygen-evolution catalysts and electrochemical water splitting research.
What is the band gap of CaMn4O8?
CaMn4O8 has a DFT-computed band gap of 0.32–0.59 eV across 22 reported structures.
Is CaMn4O8 a metal, semiconductor, or insulator?
With a band gap up to 0.59 eV it is a semiconductor.
Is CaMn4O8 thermodynamically stable?
CaMn4O8 has a lowest energy above hull of 0.029 eV/atom (metastable).
How many polymorphs of CaMn4O8 are known?
22 structures of CaMn4O8 are reported across 5 databases, spanning 6 distinct space groups.
How is CaMn4O8 synthesized?
Literature-reported routes for CaMn4O8 include solid state.
What elements does CaMn4O8 contain?
CaMn4O8 contains Ca, Mn, and O (3 elements).
Where does the data for CaMn4O8 come from?
CaMn4O8 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the oxide oxygen-evolution catalysts class.

Unlike the highly stable and widely utilized LiCoO2 or LiMn2O4, which are cornerstones of battery technology, CaMn4O8 exists in a metastable state that presents distinct challenges and opportunities for catalytic surface engineering. While materials like LaMnO3 are often explored for their robust perovskite frameworks, CaMn4O8 offers a different structural motif that researchers leverage to tune oxygen-evolution activity in specialized electrochemical 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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