Lithium iron phosphate Battery VS NCM Battery
Lithium iron phosphate batteries and NCM each have their own advantages and disadvantages, and it is difficult to simply judge which one is better. The following is a comparison of the two in multiple dimensions.
1.Safety
Lithium iron phosphate battery: The positive electrode material of lithium iron phosphate has high thermal stability, and the thermal runaway temperature can reach 350-500 ℃ or even higher. Under extreme conditions such as high temperature, overcharging, and overdischarging, it is not easy to experience thermal runaway, greatly reducing the risk of combustion or explosion.
NCM Battery: Under high temperature or overcharge conditions, the positive electrode material of ternary lithium batteries may decompose and release oxygen, increasing the risk of fire. Although safety can be improved through measures such as battery management systems, the overall safety is still slightly inferior to that of lithium iron phosphate batteries.
2.Cycle life
Lithium iron phosphate battery: Known for its excellent cycling performance, it can typically achieve 2000 or even higher charge and discharge cycles, and some specific energy storage lithium iron phosphate batteries can even reach 5000-8000 cycles.
NCM battery: The cycle life is generally between 1000-2000 times, and some can reach more than 3000 times. Its durability is not as good as that of lithium iron phosphate batteries.
3.Energy density
Lithium iron phosphate battery: The energy density is generally around 150Wh/kg. Under the same volume or weight, the stored electricity is relatively small, and the endurance is relatively weak.
NCM Battery:The energy density can reach over 200Wh/kg, with some high-end products even higher. They can store more energy in the same volume and provide longer range for devices.
4.Low temperature performance
Lithium iron phosphate battery: In low-temperature environments, the capacity decreases rapidly, the cycling performance deteriorates, and the maximum operating temperature is generally around minus 20 degrees Celsius.
NCM Battery:Good low-temperature resistance, with a maximum temperature of around minus 30 degrees Celsius. It can still maintain high discharge efficiency and capacity in low-temperature environments.
5.Conclusion
In summary, if the application scenario requires high safety, pursues long lifespan, strict cost control, and does not require high low-temperature performance, such as electric buses, electric logistics vehicles, energy storage systems, etc., lithium iron phosphate batteries are more suitable; If high energy density, charging efficiency, and low-temperature performance are required, and willing to bear high costs and certain safety risks, such as electric cars, electric SUVs, 3C products, etc., NCM batteries have more advantages.