Fig. 1: Nucleation-promoting and growth-limiting molten-salt synthesis method (NM synthesis).
From: Nucleation-promoting and growth-limiting synthesis of disordered rock-salt Li-ion cathode materials
a The schematics of the heat treatment profile of the NM synthesis vs. traditional solid-state or molten-salt synthesis. b XRD patterns of the as-synthesized Li1.2Mn0.4Ti0.4O2 (LMTO) made through a solid-state method (S-LMTO) and after particle pulverization (PS-LMTO). c XRD patterns of the LMTO synthesized via the NM method (NM-LMTO) with different initial calcination temperatures and times (900 °C-20 min, 900 °C-5 min, 800 °C-20 min, and 800 °C-5 min, precursor-to-salt ratio of 1:1.5 by weight). These NM-LMTO particles underwent the annealing procedure at 600 °C for 20 h under argon after the initial calcination step. d–h The SEM images of the d S-LMTO and PS-LMTO, e NM-LMTO with different initial calcination steps, f NM-Li1.1Mn0.7Ti0.2O2 (NM-LMTO-70, 900 °C-1 min calcination, 600 °C-5 h annealing under argon), g NM-Li1.2Mn0.6Nb0.2O2 (NM-LMNO, 950 °C-3 min calcination, 600 °C-5 h annealing under argon), and (h) NM-Li1.2Ni0.2Ti0.6O2 (NM-LNTO, 750 °C-5 min calcination, 600 °C-5 h annealing in air). Source data for b, c are provided as a Source Data file.
