Fe2P2O7

Iron(II) pyrophosphate · Ferrous pyrophosphate

Fe2P2O7 is a stable, semiconducting iron pyrophosphate oxide utilized in the development of advanced oxygen-evolution catalysts.

Crystal structure of Fe2P2O7
Ground-state structure · Materials Project
Overview

About Iron(II) pyrophosphate

Fe2P2O7 is a semiconducting iron-based pyrophosphate that maintains significant thermodynamic stability. As a member of the oxide oxygen-evolution catalyst family, it is recognized for its structural diversity, with numerous documented configurations that facilitate its investigation in electrochemical systems.

This compound plays a critical role in materials science by providing a stable framework for catalytic processes. Its electronic character makes it a candidate for study in energy conversion applications where robust, non-precious metal oxides are required to drive efficient oxygen evolution reactions.

At a glance

Key Properties

Cross-validated computational properties for Iron(II) pyrophosphate, aggregated across 4 databases.

Band Gap

0.74–1.21 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

16
4 databases, 4 space groups
Uses

Applications

Where Iron(II) pyrophosphate is used.

Oxygen-evolution catalysisElectrochemical energy conversion researchMaterials science studies
Reference

Frequently Asked Questions

Common questions about Iron(II) pyrophosphate, answered from cross-validated data.

What is Fe2P2O7?

Fe2P2O7 is a stable, semiconducting iron pyrophosphate oxide utilized in the development of advanced oxygen-evolution catalysts.

More questions
What is Fe2P2O7 used for?
Iron(II) pyrophosphate (Fe2P2O7) is used in oxygen-evolution catalysis, electrochemical energy conversion research, and materials science studies.
What is the band gap of Fe2P2O7?
Iron(II) pyrophosphate (Fe2P2O7) has a DFT-computed band gap of 0.74–1.21 eV across 16 reported structures.
Is Fe2P2O7 a metal, semiconductor, or insulator?
With a band gap up to 1.21 eV it is a semiconductor.
Is Fe2P2O7 thermodynamically stable?
Yes — Iron(II) pyrophosphate (Fe2P2O7) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Fe2P2O7 are known?
16 structures of Fe2P2O7 are reported across 4 databases, spanning 4 distinct space groups.
What elements does Fe2P2O7 contain?
Iron(II) pyrophosphate (Fe2P2O7) contains Fe, O, and P (3 elements).
Where does the data for Fe2P2O7 come from?
Fe2P2O7 data is cross-referenced from latticegraph.
Comparison

How It Compares

Within the oxide oxygen-evolution catalysts class.

Unlike the highly conductive perovskite-structured catalysts such as LaNiO3 or LaMnO3, Fe2P2O7 functions as a semiconducting phosphate-based oxide. While materials like LiCoO2 and LiMn2O4 are primarily optimized for lithium-ion intercalation, Fe2P2O7 distinguishes itself through its distinct anionic framework, offering a different catalytic environment compared to the simple transition metal oxides like NiO.

Explore

Related Compounds

Other Oxide Oxygen-Evolution Catalysts in the database.

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

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