Single Crystal Li_1+x[Ni_0.6Mn_0.4]_1−xO₂ Made by All-Dry Synthesis

Cobalt-free, single crystal layered-oxide positive electrode materials like Li 1+x [Ni 0.6 Mn 0.4 ] 1−x O 2 (NM64) have received recent interest because of their low cost, high-voltage stability, and good cycle life. In this work, NM64 is successfully produced with a simple all-dry synthesis process that requires no water, intermediate chemicals, produces little waste. The synthesized has ≤ 4% nickel in the lithium layer based on Rietveld refinement powder XRD patterns, median particle size 2–5 μ m SEM analysis, excellent stability at C/5 up to 4.4 V vs + /Li compared commercial material. Additionally, tungsten coating shown decrease improve cycling half cells from 91% retained capacity after 100 cycles 93% when 0.3% added. It believed incredibly could be adopted relatively easily into current manufacturing facilities reduce complexity, time manufacture.