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首页> 外文期刊>Journal of industrial and engineering chemistry >Synthesis and electrochemical performance of (100-x)Li7P3S11-xLi(3)SI composite solid electrolyte for all-solid-state lithium batteries
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Synthesis and electrochemical performance of (100-x)Li7P3S11-xLi(3)SI composite solid electrolyte for all-solid-state lithium batteries

机译：（100-x）Li7P3S11-XLI（3）Si复合固体电解质的合成与电化学性能，适用于全固态锂电池

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摘要

Li7P3S11 (LPS) solid electrolytes have great advantages, such as high lithium-ion conductivity, and can easily fabricate to make bulk-type all-solid-state lithium batteries. However, LPS has a disadvantage because of large interfacial resistance with lithium, which give a limitation for all-solid-state battery. In this study, (100-x)Li7P3S11-x Li3SI (x = 0. 2 and 5) solid electrolyte composites are prepared by mechanical ball milling process. Various physiochemical analysis was carried out to confirm the proper mixing of Li7P3S1 and Li3SI solid electrolytes. The addition of Li3SI solid electrolyte, effectively influence the ionic conductivity and electrochemical properties of the Li7P3S1 solid electrolyte. The prepared Li7P3S11/Li3SI solid electrolyte composites are stable against the lithium metal anode even after 100 h charge discharging process and has stable potential window up to 10 V. In particular, 98Li(7)P(3)S(11)-2Li(3)SI solid electrolyte based ASSLBs shows the highest capacity, of 110 mA/g at the current density of 7.5 mA g(-1) (0.05 C). The charge - discharge cycle stability test also proved the Li3SI mixing to Li7P3S11 helped to maintain the capacity retention value of similar to 100 % after 10 cycles. Therefore, the Li3SI into the Li7P3S11 electrolyte helps improve the electrochemical performance. Crown Copyright (c) 2021 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. All rights reserved.
机译：Li7P3S11（LPS）固体电解质具有高锂离子电导率等优点，可以方便地制备成块体全固态锂电池。然而，由于LPS与锂的界面电阻较大，这给全固态电池带来了限制。本研究采用机械球磨法制备了（100-x）Li7P3S11-x Li3SI（x=0.2和5）固体电解质复合材料。进行了各种理化分析，以确认Li7P3S1和Li3SI固体电解质的正确混合。Li3SI固体电解质的加入，有效地影响了Li7P3S1固体电解质的离子导电性和电化学性能。制备的Li7P3S11/Li3SI固体电解质复合材料即使在经过100小时的充放电过程后，对锂金属阳极也是稳定的，并且具有高达10 V的稳定电位窗口。特别是，基于98Li（7）P（3）S（11）-2Li（3）SI固体电解质的ASSLBs在7.5 mA g（-1）（0.05 C）的电流密度下显示出最高的容量，为110 mA/g。充放电循环稳定性试验还证明，将Li3SI混合到Li7P3S11中，有助于在10次循环后保持接近100%的容量保持值。因此，Li7P3S11电解液中的Li3SI有助于改善电化学性能。Erthvier-B.V出版的皇家著作权（C）2021，代表韩国工业和工程化学学会。版权所有。

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