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Fraunhofer Researchers Accelerate the Production of More Powerful Batteries

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The Layer Thickness on Battery Foils is Measurable Inline

In the coming years, around 1,000 production lines for electrode foils are expected to be built in Europe, according to reports from Kaiserslautern (Germany). Similar figures apply to Asia and North America. To monitor quality inline, meaning during production, only non-contact systems can be employed. Therefore, the ITWM's Department of Material Characterization and Testing has expanded its expertise in terahertz measurement technology for inline coating control of battery foils, the researchers emphasize. Battery foils are the main components of lithium-ion battery cells. Continuous monitoring of material parameters—such as layer thickness and electrode conductivity—is crucial for product quality. The measurements are performed inline on single- and multi-layer coatings of anode and cathode foils at various points in the wet or dry process—always non-contact, making them non-destructive and eliminating the need for otherwise required radiation protection measures.

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