ZSW announces development of lithium-ion battery for solar power reserve system

German research institute for solar energy and hydrogen energy Baden-Württemberg (ZSW) announced the development of a top performance lithium-ion battery.

According to a research report published by ZSW, such high-performance batteries have surpassed the current international cutting-edge technologies in terms of the use of the important parameter "cycle stability" of the validity period: a complete cycle of over 10,000 cycles can be achieved.

After 10,000 complete discharges and discharges, 85% of production capacity remains

ZSW said that in terms of other attributes such as power density, the performance of this type of battery is comparable to that of currently leading Asian manufacturers. The active substances of this kind of battery only come from German enterprises. ZSW has designed the battery and developed a production process. After 18650 formats, ZSW made a small sample series.


ZSW researchers put electrode paste into blender

ZSW pointed out that this technology has created the basis for the manufacture of large pouch batteries and large square batteries. Lithium-ion batteries can be used in electric cars and solar energy storage systems.

Dr. Margret Wohlfahrt-Mehren, Director of Battery Materials Research Department, said: “Once the 10,000 charge/discharge cycles per hour, our lithium-ion production capacity was still more than 85%.”

"This type of lithium-ion battery has an excellent lifetime."

For automotive companies, long service life is a basic requirement. Lithium-ion technology batteries can serve a car for at least 10 years, and the remaining energy of the battery will not be less than 80% of the rated value.

Other parameters are also outstanding

The other parameters of this type of battery are also extremely excellent. For example, the battery's power density (ratio of output power to its volume) is 1100 watts per kilogram, which is at an international level. For electric vehicles, this value means shorter charging times and excellent acceleration performance.

This type of small battery is semi-automatically produced at the ZSW Battery Technology Laboratory (eLaB) in Ulm, Germany and is jointly funded by the German Federal Ministry of Education and Research (BMBF) and the German Federal Ministry of Economics and Technology (BMWi). Such research contracts can enable interested companies to acquire new materials and processes without stopping production.

Further development and quality improvement of large batteries

In the next phase, ZSW researchers and engineers hope to collaborate with industry partners on the development of electrodes for large prismatic lithium batteries.

Margret Wohlfahrt-Mehrens said: "Before large-scale manufacturing of large-scale batteries, companies need to master the current cutting-edge battery technology." She believes that although the development of large-scale battery application technology is essential, but improving quality is also in principle important. (Translator: Krystal)

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