FeSO4
ferrous sulfate · iron(II) sulfate
FeSO4 is a thermodynamically stable, semiconducting iron-based compound that is investigated for its potential role in oxygen-evolution catalysis.

About ferrous sulfate
FeSO4 is a semiconducting iron-based compound that functions within the class of oxygen-evolution catalysts. As a thermodynamically stable material located on the convex hull, it represents a robust candidate for researchers investigating electrochemical water splitting and energy conversion processes. Its structural versatility is highlighted by a significant number of reported crystal configurations across major materials databases, reflecting its importance in inorganic chemistry. This compound serves as a critical subject for understanding how transition metal sulfates participate in catalytic surface reactions. By leveraging its stable electronic character, scientists can probe the fundamental mechanisms of oxygen evolution, which is essential for developing efficient sustainable energy technologies.
Key Properties
Cross-validated computational properties for ferrous sulfate, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Synthesis Routes
Literature-extracted synthesis procedures targeting FeSO4.
Applications
Where ferrous sulfate is used.
Frequently Asked Questions
Common questions about ferrous sulfate, answered from cross-validated data.
What is FeSO4?
FeSO4 is a thermodynamically stable, semiconducting iron-based compound that is investigated for its potential role in oxygen-evolution catalysis.
What is FeSO4 used for?
What is the band gap of FeSO4?
Is FeSO4 a metal, semiconductor, or insulator?
Is FeSO4 thermodynamically stable?
How many polymorphs of FeSO4 are known?
How is FeSO4 synthesized?
What elements does FeSO4 contain?
Where does the data for FeSO4 come from?
How It Compares
Within the oxide oxygen-evolution catalysts class.
While materials like LiCoO2 and LiMn2O4 are widely recognized for their roles in battery cathode technologies, FeSO4 distinguishes itself within the broader oxide catalyst family through its specific sulfate-based coordination environment. Unlike the perovskite structures of LaMnO3 or BiFeO3, which are frequently studied for their complex magnetic and ferroelectric properties, FeSO4 offers a more focused structural profile that simplifies the study of active catalytic sites during the oxygen evolution reaction.
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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