Targray high-performance LFP Cathode Material

Developed in consultation with the industry’s premier cathode material manufacturers, Targray high-performance LFP cathode powders are engineered to help extend cycle life, rate capability and low temperature performance in lithium iron phosphate batteries. For more information about our LFP cathode product line, consult the table below or contact the Battery Division.

Lithium Iron Phosphate Batteries

 

LFP Cathode PerfformanceLithium Iron phosphate (LFP) is a popular, cost-effective cathode material for lithium-ion cells that is known to deliver excellent safety and long life span, which makes it particularly well-suited for specialty battery applications requiring high load currents and endurance.

Discovered by University of Texas researchers in the mid-90s, LFP cathode offers several key advantages including a high current rating, long cycle life, and superior thermal stability, which makes it one of the safest and most abuse-tolerant cathode material options available to manufacturers. On the other hand, LFP delivers a lower nominal voltage, which results in lower specific energy when compared to other cathode materials on the market. Consequently, LFP batteries tend to have a higher self-discharge than other Li-ion battery types.

Chemical & physical Properties:-

ITEM UNIT SPECIFICATION TESTING METHOD
Fe 32.6 – 33.4 ICP-OES
Li 4.2 – 4.6 ICP-OES
p [wt.-%] 18.5 – 19.1 ICP-OES
C 3.5 – 3.9 Combustion
Specific surface area [BET] [m²/g] 19 – 25 N2 Physisorption
Tapped density [g/cm³] 0.9 – 1.3 Tapped density tester
PSD, d10 0.5 – 1.5 Laser diffraction
PSD, d50 [μm] 5.0 – 8.0 Laser diffraction
PSD, d90 11.0 – 15.0 Laser diffraction
PSD, d99 ≤ 25.0 Laser diffraction
Cu* ≤ 25.0 ICP-OES
Mn + Cr* + Ni + Mg + Ca + Zn ≤ 1070 ICP-OES
Na+ K* [ppm] ≤ 500 ICP-OES
S ≤ 1200 Combustion
Moisture [ppm] ≤ 900 Columetric, 200°C
pH value [-] 7.5 – 10.5 5g in 100 ml water

* Below detection limit [Cu, Cr 30 ppm, K 100 ppm]

 

Capacity Tests (Coin Cell):-

ITEM UNIT TYPICAL VALUE SPECIFICATION
Specific capacity 0.1 C* [mAh/g] 145 ≥ 142
Coulomb efficiency 1st cycle [%] > 95.0

* Half cells, 25 °C, 11.5 mg/cm2, 2.3 g/cm3, LiPF6 EC/DMC/DEC, 2nd cycle discharge CC 4.2 – 2.7 V

 

Chemical & physical Properties:-

ITEM UNIT SPECIFICATION TESTING METHOD
Fe 32.6 – 33.4 ICP-OES
Li 4.2 – 4.6 ICP-OES
P [wt.-%] 18.5 – 19.1 ICP-OES
C 3.5 – 3.9 Combustion
Specific surface area (BET) [m²/g] 19 – 25 N2 Physisorption
Tapped density [g/cm³] 1.0 – 1.4 Tapped density tester
PSD, d10 1.0 – 5.0 Laser diffraction
PSD, d50 [μm] 9.5 – 12.5 Laser diffraction
PSD, d90 20.0 – 28.0 Laser diffraction
PSD, d99 ≤ 53.0 Laser diffraction
Cu* ≤ 30 ICP-OES
Mn + Cr* + Ni + Mg + Ca + Zn ≤ 1070 ICP-OES
Na + K* [ppm] ≤ 500 ICP-OES
S ≤ 1200 Combustion
Moisture [ppm] ≤ 500 Columetric, 200°C
pH value [-] 7.5 – 10.5 5 g in 100 ml water

* Below detection limit (Cu, Cr 30 ppm, K 100 ppm)

 

Capacity Tests (Coin Cell):-

ITEM UNIT TYPICAL VALUE SPECIFICATION
1st CC/CD cycle ≥ 142
Specific capacity 0.2 CC (mAh/g) 152
Specific capacity 0.1 CD (mAh/g) 151
Coulomb efficiency (%) 99.3

Half cells, 25 °C, 11.5 mg/cm², 2.3 g/cm³, LiPF6 EC/DMC/DEC, 2.5-4.2 V.

 

Working closely with our supply partners and organizations including the Electrochemical Society and NAATBatt International, we help lithium-ion battery manufacturers and researchers worldwide commercialize ambitious new technologies for the energy storage market.

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