Oxygen redox provides an opportunity to realize the high-energy potential of battery cathodes, but the formation of molecular O2 from the oxidation of oxide ions significantly reduces the cycling stability. Now, the nature of electron-holes on oxide ions is reported, providing insights into realizing a truly reversible oxygen–redox cathode.
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Park, YJ., Seo, DH. Capturing the hole states of oxygen. Nat Energy 8, 323–324 (2023). https://doi.org/10.1038/s41560-023-01212-z
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DOI: https://doi.org/10.1038/s41560-023-01212-z
