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  • World's largest lithium ceramic battery

    In the future it’s desirable to store wind and solar generated energy efficiently on a large scale. For this purpose Evonik Industries and its partners are developing the world's largest lithium ceramic battery. The battery is based on CERIO® technology, a special combination of ceramic materials and high-molecular ionic conductors, which ensures greatly increased safety combined with a small footprint and long cycle lifetime. As a first step, an energy storage device with an output of one megawatt and a storage capacity of about 700 kWh is being developed at the Völklingen power plant site in the
    Saarland region. An example gives an idea of the performance of such a device: if it were charged and discharged every 15 minutes, the energy supplied would meet the needs of 4,000 households a year.
    Following the development of the 1-megawatt storage device, an expansion to 10 MW is planned. "We're using our unique lithium ion expertise, which is already revolutionizing the electrification of the car, to enter an entirely new market," says Dr. Klaus Engel, chairman of the Executive Board of Evonik Industries AG. "Using lithium ceramic technology, we've achieved, for the first time ever, cost effective decoupling of the generation and consumption of power. We can stabilize grid fluctuations arising from solar and wind power generation, and can therefore organize power generation with far greater overall efficiency. As in the automotive sector, this will be a billion-euro market," predicts Engel. Experts estimate market volume for advanced energy storage devices at more than €10 billion in the long term. Future power requirements for advanced storage systems in
    Germany alone lie in the high three-digit megawatt range.

    Ecologically and economically sustainable development of renewable energies is a central goal of German climate protection and energy policy. The share of renewable energies in
    Germany is planned to increase stepwise to 50 percent by the year 2050.
    Evonik’s patented technology is also at the core of their partnership with Daimler AG, which aims at mass producing electric vehicles from 2012 onward. In addition to the anode and cathode material, the SEPARION® ceramic membrane serving as a separator is at the core of the innovation.

    The technology also offers extraordinary potential for stationary applications. Under the name LESSY (lithium-ion electricity storage system), Evonik is promoting an ambitious project on this theme from the Energy Efficiency Science-to-Business (Eco² S2B) Center. The Center is home to nearly two dozen projects on resource conservation and climate protection. The

    Science-to-Business
    Center concept of Creavis Technologies & Innovation, Evonik's strategic research unit, aims to bring together partners from different disciplines to reduce as far as possible the time interval from idea to marketable product.

    Evonik has obtained two business partners for LESSY in its own subsidiary Li-Tec Battery GmbH, a joint venture with Daimler, and Digatron Industrie-Elektronik GmbH. The technical collaborators on the project are the
    University of
    Münster, the

    EWE
    Research
    Center for Energy Technology (Next Energy), and the Institute of Electrical Power Engineering of HTW Saarland. The development of large-volume batteries is focusing initially on the application area of grid regulation, specifically on the provision of primary regulation energy, which has so far been generated by conventional large-scale power plants.
    In the LESSY project the components of the lithium ceramic battery are being developed specifically with primary regulation energy provision in view. This will be followed by the construction and operation of a storage device with energy regulating capacity of about 1 MW. The required battery will have a storage capacity of about 700 kWh, 40 to 50 times higher than in batteries for electric or hybrid vehicles. The energy storage device will be located at Evonik's Fenne power plant in Völklingen, which is contributing by providing free services for provision of regulation energy for the German power grid.

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