Imec: we have solid electrolyte cells, specific energy 0,4 kWh / liter, charge 0,5 ° C

The Belgian Imec boasted that it was able to create solid electrolyte cells with an energy density of 0,4 kWh / liter that can be charged at 0,5 C. For comparison: 21700 (2170) lithium-ion cells used in the Tesla Model 3.Reach about 0,71 kWh / liter and can be charged for a short time with a power above 3 C.

While the batteries are worse than those Panasonic makes for Tesla, the launch is encouraging. Imec cells contain solid-state nanocomposite electrolytes (source). They are safer in the event of an accident and should allow you to achieve higher charging power without noticeable degradation. At least in theory.

> How to reduce the heating of the Nissan Leaf battery? [WE WILL EXPLAIN]

At an energy density of 0,4 kWh / L, the charging should be 0,5 ° C, which is half the battery capacity (20 kW for 40 kWh, etc.). Here, the manufacturer also expects significant improvements in the coming years. The company plans to reach 2 ° C with an increase in specific energy up to 1 kWh / l. And in 2024 he wants to reach a charging speed of 3 C.

Such power in classical lithium-ion cells is considered very high and is used for a short time. Already 2 ° C seems like a reasonable limit, above which cell decomposition accelerates.

Opening photo: factory floor (c) Imec

This may interest you: