Empa, UNIGE team develop prototype solid-state sodium battery; focus on improving the solid-solid interface

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Researchers at Empa and the University of Geneva (UNIGE) have developed a prototype of a novel solid-state sodium battery with the potential to store extra energy and with improved safety. With a NaCrO 2 cathode, closo-borate solid electrolyte and metallic sodium anode, the cell demonstrated reversible and stable cycling with a capacity of 85 mAh g -1 at C/20 and 80 mAh g -1 at C/5 with more than 90% capacity retention after 20 cycles at C/20 and 85% after 250 cycles at C/5.

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PNNL study outlines requirements for grid storage, reviews four electrochemical energy storage systems: vanadium redox flow, Na-beta, Li-ion and lead-carbon

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Classification of potential electrical storage for stationary applications. There appears to be general agreement on the needs of electrical energy storage (EES) for the electrical grid, given the current trend toward increasing penetration of renewable energy, demands to improve power reliability and quality, along with implementation of smart grids, according to a new report by researchers at the US Department of Energy’s Pacific Northwest National Laboratory.

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