LiMn0.7Fe0.3PO4 (LMFP73) Powder for Li-Ion Battery Cathode, 100-500 g/bottle, CLIBCLMFP73
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LiMn0.7Fe0.3PO4 (LMFP73) is a high-performance, manganese-rich olivine-structured cathode material for lithium-ion batteries. It represents a major evolutionary step over standard lithium iron phosphate (LiFePO4, or LFP) by doping a high fraction of manganese (Mn) into the iron (Fe) lattice sites to significantly boost energy density.
LMFP73 crystallizes in the same orthorhombic olivine structure (space group Pnma) as LFP. The framework consists of corner-sharing [MnO6] and [FeO6] octahedra bridged by tetrahedral [PO4]^{3-} polyanions. Because it contains two distinct transition metal ions, its discharge curve features a characteristic dual-voltage plateau: (1) Mn Region (~ 4.1 V vs. Li/Li+): Accounts for 70% of the capacity via the Mn^{2+}/ {Mn}^{3+} redox couple. This high-voltage operation is what elevates the energy density of LMFP73 by ~15–20% over standard LFP, pushing it closer to NCM523 architectures while retaining polyanionic safety. (2) Fe Region (~3.5 V vs. Li/Li+): Accounts for 30% of the capacity via the Fe^{2+}/Fe^{3+} redox couple. This plateau provides a highly reliable state-of-charge (SOC) marker for battery management systems (BMS).
Introducing 30% iron Fe^(2+) acts as a structural buffer. The highly stable, non-distorting [FeO6] octahedra absorb the mechanical stresses generated by the neighboring [MnO6] units. This synergy reduces the overall volume change during cycling to acceptable levels, suppressing phase separation and facilitating rapid Li+ transport along the 1D [010] channels.
| Part Number |
CLIBCLMFP73 (C-LIB-C-LMFP73) |
| Chemical Composition |
Li: 4.58 wt%, Mn: 22.78 wt%, Fe: 11.00 wt%, P: 19.02 wt%, |
| Particle Size Distribution |
D10 = 0.29 um; D50 = 1.06 um; D90 = 14.75 um |
| Tap Density | 0.89 g/cm3 |
| Specific Area | 15.51 m2/g |
| Water Level | <529 ppm |
| First Discharging Capacity |
~145.68 mAh/g (0.1 C) |
| First Columbic Efficiency |
95.54% |
| Package Grade |
100 g, 200 g, and 500 g/bottle |
Notes: (1) Please store the LMFP73 powder in a dry area (glovebox is preferred); (2) The battery powder is highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use.
References:
- Q. Hu, et al. Revealing the voltage decay of LiMn0.7Fe0.3PO4 cathodes over cycling, Nano Energy, 2024, 123, 109422.
- H. Xiong, et al. A Uniform Conductive Carbon Coating of Nitrogen-Doped Carbon Improves the Electrochemical Performance of LiMn0.7Fe0.3PO4 Cathode Material for Lithium-ion Batteries, ChemElectroChem, 2024, 11, e202400440
