Fig. 3

Structural analyses of NLMO and NLMO-Zn. a Shows the XRD patterns of NLMO and NLMO-Zn. b, c Show the Rietveld refinement results for high-resolution diffraction patterns (HRPD) of NLMO and NLMO-Zn, respectively. Crystal structure of P2-type NLMO (or NLMO-Zn) viewed along the y-axis (d) and the z-axis (e). f Shows the XPS spectra in the Mn 2p3/2 region of NLMO and NLMO-Zn