The German research institute for solar energy and hydrogen energy, Baden-Württemberg (ZSW), has made a groundbreaking advancement in lithium-ion battery technology. According to a recent report from ZSW, this new battery surpasses current global standards in terms of "cyclic stability"—a critical parameter that measures the battery's longevity. The battery can endure over 10,000 full charge and discharge cycles while maintaining more than 85% of its original capacity.
This level of performance is a major leap forward in the field of energy storage. In addition to cyclic stability, the battery also excels in power density, which is currently at an international standard. With a power density of 1,100 watts per kilogram, it offers faster charging times and better acceleration for electric vehicles. This makes it highly suitable for both automotive and renewable energy applications.
ZSW researchers have developed the battery design and production process, starting with the 18650 format. They have already created a small batch of samples. The active materials used in the battery are sourced exclusively from German companies, ensuring high-quality control throughout the manufacturing process.
Dr. Margret Wohlfahrt-Mehren, head of the Battery Materials Research Department at ZSW, emphasized the long service life of the battery. She stated, “After 10,000 charge/discharge cycles, our lithium-ion battery still retains more than 85% of its capacity.†For automotive manufacturers, this means batteries can last at least 10 years, with remaining energy levels not dropping below 80% of their rated value.
The technology also paves the way for larger battery formats, such as pouch and prismatic cells, which could be used in electric vehicles and solar energy storage systems. ZSW is now working on developing electrodes for large-scale lithium batteries in collaboration with industry partners.
In the next phase, the focus will be on improving the quality and scalability of these large batteries. Dr. Wohlfahrt-Mehren added, “Before mass production, companies must master cutting-edge battery technology. While developing large-scale applications is essential, refining quality remains equally important.â€
The project is supported by the German Federal Ministry of Education and Research (BMBF) and the Federal Ministry for Economic Affairs and Climate Action (BMWi). This funding allows companies to access new materials and processes without disrupting their existing operations.
Overall, ZSW’s breakthrough marks a significant step toward more durable, efficient, and sustainable energy storage solutions.
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