MIT, Toyota team clarifies role of iodide in Li-air batteries

By mmillikin Lithium-air (or lithium-oxygen) batteries potentially could offer three times the gravimetric energy of current Li-ion batteries (3500 Wh/kg at the cell level); as such, they are looked to a potential solution for long-range EVs. However, tests of various approaches to creating such batteries have produced conflicting and confusing results, as well as controversies over how to explain them.

Now, researchers from MIT, with a colleague from Toyota Motor Europe’s R&D group, have carried out detailed tests that seem to resolve the questions surrounding one promising material for such batteries: lithium iodide (LiI). The compound was seen as a possible solution

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