Na3Mn0.5V1.5(PO4)3 (NMVP) Powder for Na-Ion Battery Cathode, 50 g/bottle, CSIBCNMVP

Sodium Manganese Vanadium Phosphate (NMVP) crystallized in the NASICON (Na Super Ionic Conductor) structure represents one of the most promising frontiers for sodium-ion battery (SIB) cathodes. It was engineered to merge the high operating voltage and structural stability of Sodium Vanadium Phosphate (Na3V2(PO4)3, or NVP) with the theoretical high capacity and lower cost of manganese-based polyanionic materials.

In pristine Na3V2(PO4)3, only two Na+ ions can be reversibly extracted under normal conditions, utilizing a single-electron redox reaction (V^{3+}/V^{4+}) with a theoretical capacity of 117 mAh/g}. Introducing manganese (Mn) completely transforms the electrochemical behavior via multi-electron redox chemistry: (1) Increased Specific Capacity: By substituting a portion of V^{3+} with Mn^{2+}, researchers can unlock a multi-electron transfer process. Upon deep charging, it activates the V^{3+}/V^{4+}, Mn^{2+}/Mn^{3+}, and high-voltage V^{4+}/V^{5+} redox couples, pushing the practical capacity up to 130 - 140 mAh/g. (2) "Staircase" Voltage Profile: Instead of a single flat plateau, NMVP exhibits a multi-step voltage curve that significantly boosts the cell's overall energy density: (a) ~4.0 V plateau: Corresponding to the V^{4+}/V^{5+} redox couple. (b) ~3.6 V plateau: Corresponding to the V^{3+}/V^{4+} redox couple. (c) ~3.5 V plateau: Corresponding to the Mn^{2+}/Mn^{3+} redox couple. (3) Exceptional Thermal and Structural Safety: The strong covalent P-O bonds within the [PO4]^{3-} polyanion tightly lock oxygen atoms into the crystal matrix. Unlike layered oxides, NMVP will not release oxygen even under severe overcharge or high-temperature abuse conditions, resulting in an exceptionally safe battery chemistry.

Part Number	CSIBCNMVP (C-SIB-C-NMVP)
Chemical Formula	Na3Mn0.5V1.5(PO4)3
Chemical Composition	Na: 14.94 wt%, V: 13.53 wt%, Mn: 7.02 wt%) P: 17.56 wt%, C: 0.62 wt%
Particle Size Distribution	D10: 1.32 um,  D50 =4.43 um,  D90: 7.88 um
XRD
First Discharging Capacity	≥98 mAh/g (0.1 C) ≥95 mAh/g (1 C)
First Columbic Efficiency	98.0%
Cycling Stability	≥88.6% after 860 cycles at 1C.
Package Grade	50 g/bottle

Notes: (1) Please store the NMVP 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: 

1. S. Cheng, et al. Regulating Bond Structure in Polyanion Cathode for Long-Cycle-Life Sodium-Ion Batteries, ACS Energy Lett. 2025, 10, 6, 2778–2787
2. H. Ma, et al. Double-Carbon-Layer Coated Na4MnV(PO4)3 Towards High-Performance Sodium-Ion Full Batteries, Adv. Mater. Interfaces, 2022, 9, 2201386