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High ionic-conducting Li- argyrodites synthesized using a simple and economic liquid-phase approach and their application in all solid-state-Lithium batteries

Abstract
We develop a new solution synthesis strategy for producing high ionic-conducting sulfide solid electrolyte using ethylenediamine (EDA) solvent. Here, we follow three simple steps: dissolve the precursor in ethylenediamine solvent to form the clear solution, then removing a solvent at 180 °C followed by heat treatment. The prepared Li5.5PS4.5Cl1.5 electrolyte demonstrated the high ionic conductivity of 2.87 mS cm?1 at 25 °C. Further, fabricated solid battery using optimized electrolyte exhibited a high initial discharge capacity of 175.7 mAh g?1 at 0.1 C rate. Moreover, the synthesis technique is a convenient and quick process, thus facilitating mass production of solid electrolytes.

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Last Modified : Apr 9, 2013
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