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New long-duration, extended capacity Na-Al battery design for grid storage

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Researchers led by the Department of Energy’s Pacific Northwest National Laboratory (PNNL) have extended the capacity and duration of sodium-aluminum batteries. The new sodium-based molten salt battery uses two distinct reactions. h is achieved with an estimated raw active materials cost of $7.02 of peak charge capacity.

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Stanford team develops sodium-ion battery with performance equivalent to Li-ion, but at much lower cost

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Stanford researchers have developed a sodium-ion battery (SIB) that can store the same amount of energy as a state-of-the-art lithium ion, at substantially lower cost. Thus, further research is required to find better sodium host materials. The sodium salt makes up the cathode; the anode is made up of phosphorous.

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New nanoparticle copper compound cathode could enable low-cost, long-life and high-power potassium-ion batteries for grid storage

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At modest current densities, round-trip energy efficiencies of 99% can be achieved. Short-term transients, including those related to wind and solar sources, present challenges to the electrical grid. Existing energy storage technologies cannot satisfy these requirements. Cost is a greater concern. —Yi Cui.

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New high energy, highly stable cathode for sodium-ion batteries

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Researchers in South Korea have developed a novel high-energy cathode material, Na 1.5 F 0.7 , for sodium-ion (Na-ion) batteries (NIBs). This new material provides an energy density of 600 Wh kg –1 , the highest value among Na-ion cathodes. Ragone plot for the new Na 1.5 cathode and other cathode materials for NIBs.

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DOE Awarding $620M for Smart Grid Demonstration and Energy Storage Projects

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The US Department of Energy is awarding $620 million for projects around the country to demonstrate advanced Smart Grid technologies and integrated systems. The selected projects include advanced battery systems (including flow batteries), flywheels, and compressed air energy systems. New York State Electric & Gas Corporation.

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Univ. of Texas researchers propose lithium- or sodium-water batteries as next generation of high-capacity battery technology; applicable for EVs and grid storage

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John Goodenough, are proposing a strategy for high-capacity next-generation alkali (lithium or sodium)-ion batteries using water-soluble redox couples as the cathode. The cell operates without a catalyst and has high storage efficiency. The present sodium-sulfur battery operates above 300 °C. V and charges at 4.2-4.4

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Molten-Salt Battery Freezes Energy Over a Whole Season

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As the pressure to decarbonize electricity grids mounts, so does the need to have long-term storage options for power generated from renewables. Especially for sources like wind and solar, which have discontinuous availability. The current melting point of 157ºC of NaAlCl 4 is higher than the researchers would like.