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Institute of Experimental Physics
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Publication: Stretchable and Biodegradable Batteries with High Energy and Power Density

Here, a concept for merging intrinsically stretchable materials with engineered stretchability by kirigami-patterning on a component level is shown to yield high-power biodegradable batteries with reversible elasticity up to 35% when stretched uniaxially and 20% for biaxial extension. Using a combination of molybdenum metal foils, a molybdenum trioxide paste, and magnesium metal foils as electrode materials, a peak power output of 196 µW/cm² and an energy density of 1.72 mWh/cm² is achieved.

[Translate to Englisch:] Kirigami battery