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Demonstrates improved capacity retention in high-voltage O3 cathodes, suggesting a new design principle for durability.
doping enables kilogram-scale production, and the assembled 18650 cylindrical cell retains 89.9% capacity after 500 cycles. Mechanistically, strong ion-oxygen interactions stiffen the Na layer lattice, stabilizing the framework during Na (de)intercalation and suppressing (003) gliding. This work establishes high ionic potential Na-site doping as a broadly applicable design principle for durable high-voltage O3 cathodes.
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Zhang et al. (2026) studied this question.
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