The Smarter E 2019

•••8••• Innovationen Batteries with increased energy density Joint research project “CLUSTERBATT” deals with future energy storage technologies of batteries W ithin the project “Clus- terbatt”, researchers are investigating the formation of metal clusters in carbon materi- als to create safe anodes for cy- cle-stable battery cells with high energy-density. The cooperation project of the Fraunhofer Gesell- schaft and the Max Planck Society deals with future energy storage technologies of batteries. Project leader Martin Oschatz wants to create the basis for nov- el battery anodes that will be able to guarantee battery cells with in- creased energy density and long service life in the future. The fo- cus is on developing an innovative anode concept for lithium and so- dium batteries to increase energy density while preserving cycle sta- bility compared to conventional lithium-ion batteries. In the group of Martin Oschatz carbon materi- als are to be developed, which can store tiny particles of the metals. “This could lead to an increase in storage capacity compared to the currently established graph- ite. Many years of experience and expertise in the field of po- rous and nitrogen-doped carbons will go directly into the develop- ment of tailor-made materials,” says Oschatz. In addition, the use of available raw materials on the anode and cathode side should increase the sustainability of the overall sys- tem. With the help of prototype cells the performance and safety of these new materials is tested. Since 2016, the chemist Mar- tin Oschatz heads the research group “Energy and Environmen- tal Utilization of Carbon Nanoma- terials” in the Department of Col- loid Chemistry at the Max Planck Institute of Colloids and Interfac- es in Potsdam. The main area of his research is the development of nanostructured carbon mate- rials with tailored properties for energy and environmental appli- cations. Project leader Martin Oschatz wants to create the basis for novel battery anodes that will be able to guarantee battery cells with increased energy density. Photo: Max Planck Institute of Colloids and Interfaces +JWWTFRU *QJPYWTSNP &' )TRSFW[XLFYFS 8U©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nzeige Ferroamp PowerShare technology The EnergyHub system is based on a unique bidirectional inverter and smart DC/DC converters de- signed for different applications such as PV production, energy storage control, DC loads and backup power functions. The En- ergyHub converters and the DC nanogrid is highly scalable and flexible. It is a modular system that can be designed specifically to any local facility requirement for both functionality and power capacity. The EnergyHub system integrates PV and energy storage in one sys- tem with one central system con- trol. There is no need for separate inverters and consequent conver- sions between AC and DC. It sim- plifies the energy flow control and allows for maximum utilization of the harvested energy and the in- vestment in batteries. The PowerShare technology takes the EnergyHub advantages to a new level. By connecting the 760 VDC nanogrid between buildings, each equipped with local Energy- Hub bidirectional inverters, the combined PV solar production of the system can be shared by feed- ing power to each building as need- ed to share the load profiles and maximizing self-consumption. In addition to sharing PV production, the technology can also be used to share a common energy storage investment and significantly in- crease PV self consumption, con- trol power related costs for a more cost effective use of batteries. Load peaks in one of the buildings, for example from local EV charging, can be shared with the other build- ings grid connections, in order to reduce peak load drawn from the AC grid. Ferroamp has also developed a high voltage DC charger that can be connected to the DC grid, allow- ing for cost effective fast charging in city environments using direct power from local PV production and existing grid connections us- ing energy storage for peak power control. 1*) %' ('RERSKVMH %' ('RERSKVMH %' 5T\JW8MFWJ ('RERSKVMH 1*) 6KDULQJ UHVRXUFHV EHWZHHQ EXLOGLQJV XVLQJ '& JULG WHFKQRORJ\