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Abstract We have successfully prepared a layered nickel manganese oxide of LiNi1/2Mn1/2O2 (a = 2.89 Å and c = 14.30 Å in hexagonal setting) and shown that this material may be a possible alternative to LiCoO2 for advanced lithium batteries in terms of the operating voltage, rechargeable capacity, cycleability, safety, and materials economy.
Ohzuku et al. (Wed,) studied this question.