Stabilizing Oxygen Framework in P3-Type Cathodes for Highly Reversible Sodium-Ion Batteries

and associated Jahn-Teller distortion is significantly reduced, as well. The modified cathode exhibits highly reversible structural evolution and remarkable cycling stability, retaining 90.0% of its capacity after 50 cycles. This work highlights OV management as an effective route to achieve stable P3 cathodes for sodium-ion batteries.