Optimizing milling and sintering parameters for mild synthesis of highly conductive Li5.5PS4.5Cl1.5 solid electrolyte,Chemical Communications

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Optimizing milling and sintering parameters for mild synthesis of highly conductive Li5.5PS4.5Cl1.5 solid electrolyte
Chemical Communications ( IF 4.3 ) Pub Date : 2023-11-09 , DOI: 10.1039/d3cc05099h
Tianyu Lei _{1,

2} , Linfeng Peng _{1,

3} , Cong Liao _{1,

4} , Shuai Chen _{1,

4} , Shijie Cheng _{1,

3} , Jia Xie _{1,

3}

Affiliation

The Li_5.5PS_4.5Cl_1.5 electrolyte gains significant attention due to its ultrahigh ionic conductivity and cost-effectiveness in halogen-rich lithium argyrodite solid electrolytes. The conventional synthetic method for obtaining the electrolyte involves mechanical milling followed by post-annealing. However, these synthesis methods typically involve high milling speeds, elevated temperatures, and prolonged durations, resulting in both high energy consumption and potential damage to the electrolyte. In this study, we successfully obtained Li_5.5PS_4.5Cl_1.5 with a high conductivity of 7.92 mS cm⁻¹ using a milling speed of 400 rpm and annealing at 400 °C for 5 hours. When incorporated into a Li₄Ti₅O₁₂-based all-solid-state battery, this electrolyte demonstrates stable cycling performance across varying temperatures.

中文翻译：

优化研磨和烧结参数温和合成高导电Li5.5PS4.5Cl1.5固体电解质

Li _5.5 PS _4.5 Cl _1.5电解质因其在富卤素锂银矿固体电解质中的超高离子电导率和成本效益而受到广泛关注。获得电解质的传统合成方法包括机械研磨和后退火。然而，这些合成方法通常涉及高研磨速度、升高温度和延长持续时间，导致高能耗和对电解质的潜在损害。在这项研究中，我们使用400 rpm的研磨速度和在400℃退火5小时，成功获得了电导率高达7.92 mS cm ^-1的Li_5.5 PS _4.5 Cl _{1.5 。}当结合到Li ₄ Ti ₅ O ₁₂基全固态电池中时，该电解质在不同温度下表现出稳定的循环性能。

更新日期：2023-11-09

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