“LiNi0.6Mn0.2Co0.2O2 (SC-NMC) is used as a specific example”
“It was found that a SC-NMC precursor in the form of a previously unobserved rock-salt (Ni, Mn, Co)O solid solution phase can be made phase pure by ball milling”
“This demonstrates that precursors with atomic scale mixing can be achieved by dry methods”
“It is furthermore shown that large precursor particle sizes are not necessary to form large SC-NMC particles as is commonly believed”
“Instead, large crystallites could just as easily be made from submicron precursors by adjusting the sintering time in air”
“As a result, highly crystalline SC-NMC with precisely controlled average crystallite sizes ranging from ~2–10 μm could be made from submicron precursor powders made using an all-dry process”
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1. Ball milling a mixture of transition metal oxides can produce homogeneous Ni,Mn,Co-oxide precursors, even to the extent of atomic mixing, so that previously unobserved (Ni, Mn, Co)O solid solution rock salt phase precursors can be formed
2. The final crystallite size of SC-NMC is only related to the heating conditions and has no relation to the precursor particle size, as previously believed
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