With the continuous acceleration of the development of science and technology, lithium-ion battery technology has also been the corresponding development, lithium iron phosphate battery came into being.This type of battery has obvious advantages, such as good safety, no memory effect, high working voltage, long cycle life, and high energy density, etc., which are mainly used in power batteries and energy storage batteries.
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Anode Materials | Lithium titanate | LiNixCoyMn1-x-y02 | LiCoO2 | Lithium manganate | LiFePO4 |
(NCM) | |||||
Nominal voltage | 1.5V | 3.6V | 3.7V | 3.8V | 3.2V |
Energy Ratio | 45-55wh/kg | 170wh/kg | 150-160wh/kg | 100wh/kg | 100-140wh/kg |
Cycle life/time | >9000 | >1000 | >300 | >500 | >2000 |
Security | Excellent | better | Poor | Good | Excellent |
Operating temperature range | -30-60℃ | -20-55℃ | -20-55℃ | -20-55℃ | -20-70℃ |
Multiplier discharge performance | ≤10C | ≤5C | ≤100C | ≤10C | ≤10C |
Energy application ratio | 90-95% | 60-70% | 95-98%(Application in 3C products) | 90-95% | 90-95% |
Advantages | Good cycling performance, high stability, can be quickly charged | Good high temperature stability, good resistance to dielectric corrosion | Good overall electrical performance and high gram capacity | Abundant manganese resources, easy to prepare, good safety | High stability, safety and reliability, good cycling performance, excellent high temperature performance, low temperature -20℃ can work normally. |
Disadvantages | Low discharge voltage plateau, low energy density, expensive | Material lattice distortion has occurred during charging and discharging, poor cycle performance | Poor security and high cost | Low material resistance to solubility, deep charging and discharging has occurred lattice distortion, resulting in rapid failure of battery capacity | General electrical conductivity, low vibrancy density |
Comprehensive price/performance ratio | Low | General | General | Low | High |
Chemistry | Voltage | Energy Density | Working Temp. | Cycle Life | Safety | Environmental | Cost based on cycle life x wh of SLA |
LiFePO4 | 3.2V | >120 wh/kg | -20-60 °C | >2000(0.2C | Safe | Good | 0.15-0.25 |
Lead acid | 2.0V | > 35wh/kg | -20 – 40°C | >200 | Safe | Not good | 1 |
NiCd | 1.2V | > 40wh/kg | -20 – 50 °C | >1000 | Safe | Bad | 0.7 |
NiMH | 1.2V | >80 wh/kg | -20 – 50 °C | >500 | Safe | Good | 1.2-1.4 |
LiMnxNiyCozO2 | 3.7V | >160 wh/kg | -20 – 40 °C | >500 | better than LiCo | OK | 1.5-2.0 |
LiCoO2 | 3.7V | >200 wh/kg | -20 – 60 °C | > 500 | Unsafe w/o PCM | OK | 1.5-2.0 |