Unravelling the Nature of the Intrinsic Complex Structure of Binary‐Phase Na‐Layered Oxides (Adv. Mater. 29/2022)

Electrode Materials In article number 2202137, Kee‐Sun Sohn, Tae Joo Shin, Docheon Ahn, Jun Lu, and co‐workers report an in‐depth phase analysis of their developed Na1−xTMO2 cathode materials with P2‐ and O3‐type phases for Na‐ion rechargeable batteries, providing structural visualization on an atomic scale and unveiling the existence of a mixed‐phase intergrowth layer distribution and unequal distribution of P2 and O3 phases. The synergetic effect of the simultaneous existence of P‐ and O‐type phases and their unique structures allows an extraordinary level of capacity retention in a wide range of voltage (1.5–4.5 V).