LiMnPO4
Lithium manganese phosphate · LMP
LiMnPO4 is a stable, insulating olivine phosphate material primarily investigated for use as a high-voltage cathode in lithium-ion batteries.
About Lithium manganese phosphate
LiMnPO4 is a thermodynamically stable member of the olivine phosphate family, characterized by its wide-band-gap insulating electronic structure. Its structural integrity and electrochemical properties make it a subject of significant interest for advanced energy storage research.
As a highly studied cathode material, it benefits from extensive structural data reported across multiple databases. Its role in the olivine class is defined by its ability to provide higher operating voltages compared to iron-based counterparts, positioning it as a key candidate for next-generation battery technologies.
Key Properties
Cross-validated computational properties for Lithium manganese phosphate, aggregated across 3 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.
Reported Structures
Lowest-energy structures reported for LiMnPO4, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 3.41 | 0.0000 | -7.816 | 3.32 |
| Pca21 (No. 29) | orthorhombic | 3.51 | 0.0111 | -7.805 | 2.83 |
| Pna21 (No. 33) | orthorhombic | 3.77 | 0.0117 | -7.804 | 2.87 |
| Pc (No. 7) | monoclinic | 3.62 | 0.0118 | -7.804 | 2.80 |
| R3 (No. 146) | trigonal | 3.76 | 0.0122 | -7.804 | 2.89 |
| Pna21 (No. 33) | orthorhombic | 3.50 | 0.0140 | -7.802 | 2.80 |
| P21/c (No. 14) | monoclinic | 3.66 | 0.0141 | -7.802 | 2.85 |
| Cc (No. 9) | monoclinic | 3.57 | 0.0156 | -7.800 | 2.82 |
| I-4 (No. 82) | tetragonal | 3.60 | 0.0193 | -7.797 | 2.83 |
| Cmcm (No. 63) | orthorhombic | 3.48 | 0.0205 | -7.795 | 3.44 |
| Pnma (No. 62) | orthorhombic | 3.29 | 0.0231 | -7.793 | 3.43 |
| P31c (No. 159) | trigonal | 3.35 | 0.0242 | -7.792 | 3.23 |
Synthesis Routes
Literature-extracted synthesis procedures targeting LiMnPO4.
Applications
Where Lithium manganese phosphate is used.
Frequently Asked Questions
Common questions about Lithium manganese phosphate, answered from cross-validated data.
What is LiMnPO4?
LiMnPO4 is a stable, insulating olivine phosphate material primarily investigated for use as a high-voltage cathode in lithium-ion batteries.
What is LiMnPO4 used for?
What is the band gap of LiMnPO4?
Is LiMnPO4 a metal, semiconductor, or insulator?
Is LiMnPO4 thermodynamically stable?
What is the crystal structure of LiMnPO4?
What is the density of LiMnPO4?
How many polymorphs of LiMnPO4 are known?
How is LiMnPO4 synthesized?
What elements does LiMnPO4 contain?
Where does the data for LiMnPO4 come from?
How It Compares
Within the olivine phosphate cathodes class.
Within the olivine phosphate class, LiMnPO4 serves as a critical bridge between the well-established LiFePO4 and the high-voltage LiCoPO4, offering a distinct balance of electrochemical potential and structural stability.
Related Compounds
Other Olivine Phosphate Cathodes in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
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