Synthesis of LiMn2O4 and LiCr0.2Mn1.8O4 powders by modified Pechini process.

Bernard Joseph Louis Gardes, Antonio Alberto da Silva Alfaya, Reni Ventura da Silva Alfaya, Alexandre Urbano, Jair Scarmínio

Abstract


LiMn2O4 and LiCr0.2Mn1.8O4 powders were synthesized by Pechini process, modified  in order to reduce the number of steps and to work at temperatures below or equal to 400oC. Both phases crystallize in the same spinel structure with lattice constants of 8.21 and 8.22 Å respectively. Although the annealing temperature was low, the cristallinity is good and no residual amounts of organic material were detected.


Keywords


LiMn2O4; Cr-doped LiMn2O4; Pechini process.



DOI: http://dx.doi.org/10.5433/1679-0375.2009v30n2p91

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