Extreme Fast Charging (XFC) for Electric Vehicles Battery

Do you ever imagine how the electricity charging station is? Unlike the gas station for Internal Combustion Engine (ICE), electric vehicles need a power to recharge their batteries. The question is how long? According to Daihatsu (2021), it takes 17 hours from 0% to 100% using house electricity. When using charging station, we should spare at least 3 hours or 1 hour for fast charging. Of course, it is quite ineffective rather than gas station for only 15 minutes maximum. This slow recharge times remain a major market barrier for electric vehicles.

The key to break that barrier lays on extreme fast charging (XFC). As we know, lithium-ion batteries have a central role in vehicle electrification. Fortunately, impressive progress has been made to increase energy density, improve cycle, and reduce cost. Therefore, develoing lithium ion batteries capable of extreme fast charging is highly desirable for electric vehicles adoption. The cathode that possibly use for XFC development is NMC 811. The higher Ni content in NMC811 improves the electronic conductivity and Li+-ion diffusivity which is desirable for XFC. For further, some crucial parameters like area loading, porosity, and electrolyte selection will give an impact for XFC performance.

Date : 29 June 2021
Written by : NBRI
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