Fig. 1
From: Environmentally stable interface of layered oxide cathodes for sodium-ion batteries
Titanium surface segregation. EELS chemical mapping of the NMTN samples and corresponding chemical compositions (white rectangle) for a Ti, b Na, c Mn, and d Ni elements. The yellow dotted lines and vertical shadings indicate the location of the interface. The results show that the interface 2 nm from the particle edge is enriched by titanium rather than other elements. Scale bar, 2 nm
