Artículo
Mechanochemically synthesized pyrite and its electrochemical behavior as cathode for lithium batteries
Primo, Emiliano Nicolás
; Bracamonte, Maria Victoria
; Luque, Guillermina Leticia
; Bercoff, Paula Gabriela
; Leiva, Ezequiel Pedro M.
; Barraco Diaz, Daniel Eugenio
Fecha de publicación:
06/2019
Editorial:
Springer
Revista:
Journal of Solid State Electrochemistry (print)
ISSN:
1432-8488
e-ISSN:
1433-0768
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This study presents a simple and scalable synthesis of pyrite (FeS2) starting from S and Fe powders, which involves high-energy ball milling of precursor powders followed by a thermal treatment. The formation of the desired product was confirmed by X-ray diffraction, Raman spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. After the synthesis, spherical FeS2 nanoparticles of ~ 85 nm in size were obtained, with a highly crystalline face-centered cubic structure and no secondary phases. The synthesized material was tested as cathode material for lithium batteries. The cathodes delivered good electrochemical lithium storage properties, such as a reversible capacity as high as 470 mAh g−1 even after 120 cycles and a good rate capability. Furthermore, aspects regarding the reaction mechanism and common electrochemical features of Li/FeS2 batteries are discussed.
Palabras clave:
CATHODE
,
LITHIUM BATTERIES
,
MECHANOCHEMICAL SYNTHESIS
,
PYRITE
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Colecciones
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Primo, Emiliano Nicolás; Bracamonte, Maria Victoria; Luque, Guillermina Leticia; Bercoff, Paula Gabriela; Leiva, Ezequiel Pedro M.; et al.; Mechanochemically synthesized pyrite and its electrochemical behavior as cathode for lithium batteries; Springer; Journal of Solid State Electrochemistry (print); 23; 6; 6-2019; 1929-1938
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