immo!nvest – Die Plattform für Standorte und Immobilien

Tag: Forscherteam

  • The fireproof future of energy storage

    The fireproof future of energy storage

    The salt battery, an integral part of early electromobility, is a safe and durable storage medium that is convincing in various applications. In contrast to lithium-ion batteries, the salt battery uses a solid, ceramic electrolyte that is neither flammable nor explosive. In Switzerland, Empa researchers are working with industrial partners to further improve the performance and efficiency of this technology.

    Advantages over conventional batteries
    The solid-state architecture and high operating temperature of around 300°C make the salt battery particularly suitable for extreme applications such as tunnelling or offshore installations, where safety is a top priority. Due to its temperature resistance and low-maintenance design, it is also used for the emergency power supply of mobile phone antennas, which have to work reliably for decades even under harsh conditions.

    Economic efficiency and challenges
    One disadvantage of the salt battery is its high operating temperature, which requires a basic consumption of energy. Empa researchers such as Meike Heinz and Enea Svaluto-Ferro are therefore working on cell structures that enable the battery to heat itself during use and thus work more efficiently. Despite the additional energy requirement, the salt battery is considered more economical and stable than many alternatives in certain applications.

    Resource-saving raw materials and recycling systems
    Another advantage is the availability of the required raw materials: Sodium and aluminium are inexpensive and plentiful, making battery production cost-effective and sustainable. Empa’s current research focus is on reducing the nickel content in the cells in order to further reduce the ecological footprint. In future projects, zinc could even replace nickel – an option that could further improve access to sustainable energy storage systems.

    Future prospects
    As research progresses, the salt battery could find its way from specialised fields of application to broad, stationary applications. Its use as a long-lasting and safe storage system for residential areas or neighbourhoods is being seriously considered. It thus offers an innovative alternative to lithium-ion batteries and shows how research at Empa can set the course for the future of energy storage.

  • Look to the future of construction technology

    Look to the future of construction technology

    It is a long way from the idea to marketable innovation – especially in the construction industry. There is a gap between technologies that work in the laboratory and the market that demands well-engineered and reliable products. The modular research and innovation building NEST of the Swiss research institutes Empa and Eawag aims to close this gap.

    The NEST (Next Evolution in Sustainable Building Technologies) was opened in 2016 and is located on the Empa campus in Dübendorf. The building consists of a building core with three cantilevered platforms. Temporary, thematically different building modules, so-called units, can be installed on it. In this way, research teams, architectural offices and companies from the construction industry can test and develop materials, technologies, products, energy concepts and usage concepts together at NEST. In the sense of a “living lab”, the installed units are actually used living and working environments.
    The “HiLo” unit is currently under construction on the top platform of NEST. Construction started in summer 2019. The unit is intended to demonstrate the possibilities in lightweight construction. In addition to an innovative roof construction, material-saving lightweight floors and an adaptive solar facade are used. During operation, the building technology is to be continuously optimized with the help of machine learning. The unit will officially open on October 6, 2021.

    The two-story “STEP2” unit is also being planned. Business and research partners implement them together in an open innovation approach. After its completion, which is planned for summer 2022, it will serve as an interdisciplinary innovation workshop and office environment. The unit’s central projects include a spiral staircase in the shape of a human spine, a building envelope that adapts to the external conditions, and a floor ceiling made with 3D printing.