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CATL Breaks Into 300+ Wh/kg Energy Density On Battery Cell Level

Chinese EV battery manufacturer Contemporary Amperex Technology Co (CATL) announced that its new lithium-ion cell sample achieved energy density of 304 Wh/kg.

CATL Breaks Into 300+ Wh/kg Energy Density On Battery Cell Level
Mark Kane Mark Kane

More range or lighter electric vehicles on the horizon

Chinese EV battery manufacturer Contemporary Amperex Technology Co (CATL) announced that its new lithium-ion cell sample achieved energy density of 304 Wh/kg.

The value was unofficially known from at least mid-2018 when confidential data leaked with a planned result of 300 Wh/kg and 700 Wh/L using a Ni-rich cathode and a Graphite/Si anode.

What do you think?

We believe that currently, no battery manufacturer has yet to reach 300 Wh/kg for lithium-ion batteries for electric cars in volume production as the state-of-the-art cells are at around 250 Wh/kg.

Let's calculate the weight benefit of higher energy dense batteries for example packs:

  • 50 kWh at 250 Wh/kg: 200 kg
  • 50 kWh at 300 Wh/kg: 166 kg (down 34 kg or 17%)
From CATL's presentation (slide shown by pushevs.com in mid-2018):

CATL batteries (Source: pushevs.com)

Source: chinadaily.com.cn, pushevs.com

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