PREPARATION IN AQUEOUS MEDIUM OF AMORPHOUS TiO2 COATINGS ON LNMO PARTICLES

Authors

  • Ana Laura Díaz-Perera Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba
  • Carlos Ricardo Milián-Pila Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba
  • Manuel Ávila-Santos Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada (CICATA-Legaria), Instituto Politécnico Nacional, Ciudad de México, México
  • Yodalgis Mosqueda-Laffita Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba
  • Eduardo Lázaro Pérez-Cappe Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba

Keywords:

recubrimiento superficial amorfo; LNMO; TiO2; baterías de ion litio.

Abstract

Translator        

 

LiNi0.5Mn1.5O4 (LNMO) is a promising high-voltage cathode material; however, its capacity is degraded by reactions with the electrolyte. Undesired reactions between the cathode and electrolyte in Li-ion batteries can be avoided by surface-coating the active cathode material. We used the citrate method in an aqueous medium to coat the commercial LNMO particles with amorphous TiO2. Three coatings were obtained to evaluate composition, morphology, structure thermal stability and electronic conductivity. Several characterization techniques were used: X-ray fluorescence, scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and attenuated total reflection. The electronic conductivity was measured using the Kelvin Method. Among the prepared coatings, the best was the LNMO-T3, given that the amorphous TiO2 phase homogeneously covered the LNMO core particles with a morphology that resembled the physical core-shell type coating, a higher thermal stability, and electronic conductivity similar to that of the LNMO core material.

Author Biographies

Ana Laura Díaz-Perera, Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba

Translator        

 

 

Carlos Ricardo Milián-Pila, Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba

Translator        

 

 

Manuel Ávila-Santos, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada (CICATA-Legaria), Instituto Politécnico Nacional, Ciudad de México, México

Translator        

 

 

Yodalgis Mosqueda-Laffita, Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba

Translator        

 

 

Eduardo Lázaro Pérez-Cappe, Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, La Habana, Cuba

Translator        

 

 

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Published

2025-06-10

How to Cite

Díaz-Perera, A. L., Milián-Pila, C. R., Ávila-Santos, M., Mosqueda-Laffita, Y., & Pérez-Cappe, E. L. (2025). PREPARATION IN AQUEOUS MEDIUM OF AMORPHOUS TiO2 COATINGS ON LNMO PARTICLES. Revista Cubana De Química, 37(1), 1–12. Retrieved from https://cubanaquimica.uo.edu.cu/index.php/cq/article/view/5401

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