In-Situ Heating X-Ray Diffraction of LiNi<sub>0.6</sub>Mn<sub>0.3</sub>Co<sub>0.1</sub>O<sub>2</sub> and LiNi<sub>0.7</sub>Mn<sub>0.3</sub>O<sub>2</sub> Made Using the All-Dry Synthesis Process.
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ABSTRACT: In-situ synthesis X-ray diffraction is conducted at the Canadian Light Source to probe phase changes during the all-dry synthesis of LiNi0.6Mn0.3Co0.1O2 (NMC631) and LiNi0.7Mn0.3O2 (NM73) made using either LiOH·H2O or Li2CO3. All materials are heated up to 950 °C and held for one hour at 950 °C under flowing oxygen. The pathway to a layered phase is similar for all samples. First, a lithiated manganese oxide phase is formed at low temperature, then cations are incorporated into a rock salt phase from ≈420 °C. A spinel intermediary phase is formed before cation ordering occurs between Li and transition metal ions above 800 °C, giving rise to the intended layered hexagonal structure.
SUBMITTER: Yu S
PROVIDER: S-EPMC12825356 | biostudies-literature | 2026 Jan
REPOSITORIES: biostudies-literature
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