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Sulfide solid electrolyte with favorable mechanical property for all-solid-state lithium battery.


ABSTRACT: All-solid-state secondary batteries that employ inorganic solid electrolytes are desirable because they are potentially safer than conventional batteries. The ionic conductivities of solid electrolytes are currently attracting great attention. In addition to the conductivity, the mechanical properties of solid electrolytes are important for improving the energy density and cycle performance. However, the mechanical properties of sulfide electrolytes have not been clarified in detail. Here, we demonstrate the unique mechanical properties of sulfide electrolytes. Sulfide electrolytes show room temperature pressure sintering. Ionic materials with low bond energies and a highly covalent character, which is promising for achieving a high ionic conductivity, tend to be suitable for room-temperature processing. The Young's moduli of sulfide electrolytes were measured to be about 20?GPa, which is an intermediate value between those of typical oxides and organic polymers.

SUBMITTER: Sakuda A 

PROVIDER: S-EPMC3719077 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Sulfide solid electrolyte with favorable mechanical property for all-solid-state lithium battery.

Sakuda Atsushi A   Hayashi Akitoshi A   Tatsumisago Masahiro M  

Scientific reports 20130101


All-solid-state secondary batteries that employ inorganic solid electrolytes are desirable because they are potentially safer than conventional batteries. The ionic conductivities of solid electrolytes are currently attracting great attention. In addition to the conductivity, the mechanical properties of solid electrolytes are important for improving the energy density and cycle performance. However, the mechanical properties of sulfide electrolytes have not been clarified in detail. Here, we de  ...[more]

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