Ultra fast elemental synthesis of high yield copper Chevrel phase with high electrochemical performance

Journal Article · Sun Apr 15 04:00:00 EDT 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2012.01.016· OSTI ID:22012088

Gershinsky, Gregory; Haik, Ortal; Salitra, Gregory; Grinblat, Judith; Levi, Elena; Daniel Nessim, Gilbert; Zinigrad, Ella ^[1]; Aurbach, Doron ^[1]

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1. Department of Chemistry, Bar-Ilan University, Ramat-Gan, 52900 (Israel)

Self-propagating High-temperature Synthesis (SHS) was applied for the first time to prepare Chevrel phases, M{sub x}Mo{sub 6}T{sub 8} (M=metal, T=S, Se). Combined electron microscopy and X-ray powder diffraction were used to clarify the chemical reactions in the Cu-Mo-S system. It was shown that the replacement of the frontal combustion by thermal explosion increased the Cu{sub 2}Mo{sub 6}S{sub 8} yield from 86 to 96%, while the synthesis remained ultra-fast: 10-20 min in a hot furnace (1000 Degree-Sign C), as compared to at least 17 h of heating for the conventional solid state technique. The synthesized material conformed to the requirements of cathode precursors for Mg batteries, and its electrochemically activity was similar to that of the conventional product. - Graphical abstarct: Schematic diagram of the combustion process. Highlights: Black-Right-Pointing-Pointer Self-propagating high-temperature synthesis was applied for the first time for preparing Chevrel phases. Black-Right-Pointing-Pointer Combined electron microscopy and X-ray powder diffraction were used to clarify the chemical reactions in the Cu-Mo-S system. Black-Right-Pointing-Pointer The synthesized Cu{sub 2}Mo{sub 6}S{sub 8} product conforms to the requirements of cathode precursors for Mg batteries.

• OSTI ID: 22012088
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. . 188; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CATHODES
COMBUSTION
COPPER
ELECTROCHEMISTRY
ELECTRON MICROSCOPY
PHASE DIAGRAMS
SOLIDS
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION