Direct synthesis of LiNi1/3Co1/3Mn1/3O2 from nitrate precursors

Two novel methods for synthesis of the title compound directly from metal nitrates are described. Phase-pure materials are produced when precursors are calcined between 600 and 1000 degreesC, with little to no ion mixing exhibited for products heated to 900 degreesC or above. The electrochemical characteristics of these materials depended upon calcination temperature and synthesis method, with results comparable to a commercial sample for the materials made at high temperatures in a one-step process without combustion. The sample prepared by combustion also exhibited very stable capacity retention upon cycling. (C) 2004 Elsevier B.V. All rights reserved.