Influence of Na/Mn arrangements and P2/P′2 phase ratio on the electrochemical performance of NaxMnO2 cathodes for sodium-ion batteries

Among the candidate cathode materials for sodium-ion batteries (SIBs), Na_xMnO₂ (NMO) layered oxides are especially attractive in terms of working potential (ca. 3.0 V vs. Na⁺/Na) and high initial specific charge.