Abstract

FLORES, José L.; PALENQUE, Eduardo; BLANCO, Mario  and  CABRERA, Saúl. OBTENCIÓN DEL MATERIAL CATÓDICO TIPO ESPINELA (LiMn₂O₄): OPTIMIZACIÓN POR REACCIONES EN ESTADO SOLIDO. Rev. Bol. Quim [online]. 2013, vol.30, n.2, pp.162-173. ISSN 0250-5460.

We optimized the purity in lithium manganese oxide (Spinel or LiMn₂O₄) cathode material, using the response surface methodology (MSR), in function of the variables (temperature and time) in solid state reactions. The obtained product has been optimized at 782 ° C and 12.8 hours of reaction in air atmosphere, this product have a purity of 99.4 + 0.4%, with a particle diameter in order of 6 ± 1 Lim, and a surface area 1.015 m² /g, the conductance is 1.57 x 10 -3 S /m, with a specific capacity of 116 mA - hr/g, these parameters are comparable with commercial LiMn₂O₄ cathode materials for LIB. The kinetic study of the reaction has an expression of velocity  . In function of this results optimized, a product flow diagram for processing of 2.500 metric tons for year has been proposed for obtain the LiMn₂O₄.

Keywords : Spinel; Cathode; Solid State.

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