Efficient Stabilization of Na Storage Reversibility by Ti Integration into O3-Type NaMnO2
Results of Rietveld analysis on (a) synchrotron X-ray and (b) neutron diffraction patterns of the sample of . A major phase crystallizes into the in-plane distorted layered structure, and the presence of a minor phase with the tunnel-type structure is also found. Refined structural parameters obtained by the Rietveld method are summarized in Supporting Tables S1 and S2. A scheme for the process of phase segregation and two-phase formation is also shown in (c).