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The practicable and comprehensive utilization of regeneratively generated electrical energy is of decisive importance for the further success of the so-called energy transition. Appropriate energy storage systems play a key role here. Especially in the field of mobile applications, lithium-ion batteries (LIB) are becoming increasingly popular. However, the problems associated with their use, e.g. B. with regard to the need for critical resources more and more in the foreground. It is hoped that a remedy will come from the utilization of new types of so-called post-lithium batteries. Among the most promising alternatives are sodium-ion batteries (NIB), which do not require scarce raw materials and could result in notable cost savings. After scientific research activities in this field have increased significantly since 2013, the first commercial sodium ion cells are now on the market. Overall, however, this battery type still has a low technology readiness level.

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