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Specification of The lithium iron phosphate (LiFePO4) battery
- Jul 14, 2017 -

Specification of The lithium iron phosphate (LiFePO4) battery, also called LFP battery

1. Cell voltage

Minimum discharge voltage = 2.5 V

Working voltage = 3.0 ~ 3.3 V

Maximum charge voltage = 3.65 V

2. Energy density

Volumetric energy density = 220 Wh/dm3 (790 kJ/dm3)

Gravimetric energy density > 90 Wh/kg[15] (> 320 J/g)

3. DOD cycle life

100% DOD cycle life (number of cycles to 80% of original capacity) = 2,000–7,000

10% DOD cycle life (number of cycles to 80% of original capacity) > 10,000

Sony Fortelion: 74% capacity after 8,000 cycles with 100% DOD

4.Cathode composition (weight)

90% C-LiFePO4, grade Phos-Dev-12

5% carbon EBN-10-10 (superior graphite)

5% polyvinylidene fluoride (PVDF)

5.Cell configuration

Carbon-coated aluminium current collector 15

1.54 cm2 cathode

Electrolyte: ethylene carbonate–dimethyl carbonate (ECDMC) 11 lithium perchlorate (LiClO

4) 1M

Anode: graphite or hard carbon with intercalated metallic lithium

6.Experimental conditions:

Room temperature

Voltage limits: 2.0–3.65 V

Charge: Up to C/1 rate up to 3.6 V, then constant voltage at 3.6 V until I < C/24

5 minutes to 80%, after 40 minutes at 100%.

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