Fidest – Agenzia giornalistica/press agency

Quotidiano di informazione – Anno 33 n° 335

Applied research dedicated for the future

Posted by fidest press agency su venerdì, 3 settembre 2021

The Federal Ministry for Economic Affairs and Energy (BMWi) predicts that Germany will consume around 655 terawatt hours in the year 2030 – an increase of almost 20 percent compared to today. The fast-growing electromobility sector is therefore look-ing for new ways to reduce the energy required to produce batteries and thus to design them to be as cost effective and environmentally friendly as possible. DRYtraec® is a promising solution developed by an interdisciplinary research team at Fraunhofer IWS in Dresden that focuses on the manufacture of battery electrodes. A key component of any battery, electrodes consist of a metal foil with a thin coating. This coating contains the active components that are responsible for storing energy. The conventional coating process uses a wet chemical method in which active materials, conductive carbon black and binders are dispersed in a solvent to make a paste that is applied to the metal foil to form a wet coating. This requires extremely large plants with very long drying tracks to ensure that the solvent evaporates. The researchers can make this process more effi-cient with the newly developed DRYtraec® dry-coating process.The building sector is one of the biggest emitters of greenhouse gases. According to the German Environment Agency, buildings are responsible for around 30 percent of the country’s CO2 emissions. Buildings with large glass frontages are particularly problematic. They heat up in the sun, especially in summer. The interior therefore needs to be cooled with electricity-intensive air conditioning, which exacerbates the carbon footprint of the building. The Fraunhofer Institute for Silicate Research ISC and the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP have come up with a sophisticated solution to this problem. In the “Switch2Save” project, researchers have been working on transparent coatings for glass façades using electrochromic and ther-mochromic materials. These add a variable, transparent dark tint to the outside of the windows. This keeps the rooms cool and thus contributes to environmental and climate protection.Another building problem, the occurrence of mold in damp conditions, could be solved in the future with bamboo. This rapidly renewable raw material absorbs CO2 and is resource-efficient and biodegradable. For this reason, the construction industry is increasingly choosing to use it as a substitute for wood, which is becoming scarce due to the increase in building activities across the globe. The Fraunhofer Institute for Building Physics IBP is presenting a solution that helps to forecast bamboo’s response to moisture, thereby enabling the humidity of the material to be managed efficiently. The goal is to prevent the occurrence of mold without the need to use chemical poisons.

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