High-Compaction-Density Lithium Iron Phosphate

This lithium iron phosphate material is developed for high-energy-density lithium-ion battery applications, with a focus on achieving superior compaction performance. It features a tap density that supports enhanced electrode density, contributing to improved volumetric energy capacity. The powder exhibits a well-controlled particle size distribution, with a D50 of approximately 1.0 μm, and a specific surface area of 11.9 m²/g, which balances reactivity and processability. Electrochemical testing in CR2032 coin cells demonstrates an initial discharge capacity of 159.4 mAh/g and a first-cycle efficiency of 89.7%, indicating robust cathode performance. Low impurity levels, including magnetic materials below 0.01 wt%, help maintain cell consistency and safety. This material is commonly used in power batteries and energy storage systems where high compaction and reliable cycling behavior are required. Its neutral pH and low moisture content further support stable slurry formulation and electrode coating.

Number	Test Project			Unit	Specification	Measured Result	Testing Method or Instrument
1	Chemical Composition	C		(%)	7.0±2.0	1.33	Infrared carbon and sulfur analyzer
2		Fe		(%)	7.0±2.0	33.49	Oxidation-reduction titrator
3		P		(%)	7.0±2.0	19.17	Quinoline phosphomolybdate gravimetric method
4		Li		(%)	7.0±2.0	4.46
5		Cr		(ppm)	≤50.0	15.0
6		Cu		(ppm)	≤100.0	1.5
7		Zn		(ppm)	≤20.0	9.9
8		Na		(ppm)	≤100.0	55.0
9		K		(ppm)	≤50.0	20.0
10		Magnetic materials		(wt%)	≤0.01	0.005	Acid burette
11	Physical Properties	Particle size distribution	D10	(µm)	≥0.1	0.356	Laser particle size analyzer
12			D50	(µm)	0.5~2.0	0.999
13			D90	(µm)	≤6.0	3.762
14		BET		(m2/g)	≥11.0	11.9	Fully automatic specific surface area and porosity analyzer
15		TD		(g/cm3)	≤0.7	1.21	Tap density measuring instrument
16		pH		/	9.6±0.5	9.68	pH meter
17		Moisture		(ppm)	≤1000	46.3	Moisture analyzer
18	Electrochemical performance	Initial discharge capacity		(mAh/g)	≥150.0	159.4	CR2032 0.1/0.1C(4.0-2.5V)
19		First-time efficiency		(%)	≥88.0	89.7