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Surface engineering to prevent oxygen evolution of high-voltage cathodes

A perovskite nanolayer formed at the surface of layered cathode particles enables ultra-stable high-voltage cycling. The lanthanum and calcium-based perovskite layer serves as an oxygen buffer, and effectively suppresses the oxygen evolution reaction that is a common cause of failure in hybrid anion- and cation-redox cathodes.

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Fig. 1: Reversible oxygen storage in a reconstructed perovskite surface layer enables stable high-voltage cycling of layered cathodes.


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This is a summary of: Cai, M. et al. Stalling oxygen evolution in high-voltage cathodes by lanthurization. Nat. Energy (2023).

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Surface engineering to prevent oxygen evolution of high-voltage cathodes. Nat Energy 8, 121–122 (2023).

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