The Intertubes are practically on fire with news of the latest development in solid-state EV battery technology, supported with funding from the European Union’s HELENA project. As for how all those new EV batteries will charge up, long duration energy storage is part of the answer, and another organization with Helena in its name has that in hand, too.Today’s lithium-ion batteries have done a good job of launching electric vehicles into commercial production.
As for that halide electrolyte, it’s not just any old halide. In a fact sheet on the project, the EU research organization CORDIS explains that the HELENA team is “looking to produce a Generation 4b battery with a high-energy density lithium metal anode, a nickel-rich nickel–manganese–cobalt cathode and a superionic halide solid electrolyte.”conductivity, good chemical and electrochemical oxidation stabilities, and mechanical deformability, compared to sulfide or oxide SEs.
That includes urban environments, where land for sprawling facilities is in short supply. In February, for example, the company began construction on a 293 megawatt-hour “ultra-long,” 48-hour energy storage system in the California city of Calistoga, which integrates battery-type storage with green hydrogen fuel cells to replace a diesel-powered emergency backup system. The batteries are needed primarily for “black start” processes following a shutdown.
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