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Abstract The structure of Fe-substituted Li 2 S-based positive electrode material Li 8 FeS 5 was analyzed using high-energy X-ray total scattering measurements. Pair distribution function (PDF) analyses indicated that… Click to show full abstract
Abstract The structure of Fe-substituted Li 2 S-based positive electrode material Li 8 FeS 5 was analyzed using high-energy X-ray total scattering measurements. Pair distribution function (PDF) analyses indicated that the mechanically milled Li 8 FeS 5 sample could best be described as having an anti-fluorite structure in which Fe ions partially occupy Li sites in the Fm 3 ¯ m unit cell. The electrochemical properties of a cell utilizing Li 8 FeS 5 as the positive electrode were also consistent with this structural model.
Journal Title: Solid State Ionics
Year Published: 2018
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