Lithium Antiperovskite-Derived Glass Solid Electrolytes

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-02-25 DOI:10.1021/acsmaterialslett.4c0257810.1021/acsmaterialslett.4c02578

Emily Milan, Gregory J. Rees, Aaron Phillips, Cristian Cano, Yi Wei, Hua Guo, Steve Feller and Mauro Pasta*,

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Abstract

In this paper, we report the synthesis of Li₂OHX (X = Br, Cl)-based glasses. These glasses were found to be challenging to synthesize, requiring extreme cooling rates achievable only by a twin-roll quench process. As has been speculated for antiperovskite-derived glasses, indications of improved lithium-ion dynamics are observed. Notably, spin–lattice relaxation nuclear magnetic resonance spectroscopy reveals a higher hopping frequency and significantly lower activation energy for Li₂OHBr glasses (0.29 eV) compared to the crystalline Li₂OHBr (0.39 eV). This may be attributable to the increased free volume in the glass samples (ρ_glass/ρ_cryst = 0.83) and a reduced ionic interaction of lithium ions with the glass structure. Despite these promising findings, the glasses were found to be unstable under pressure and crystallized in attempts to produce bulk samples for impedance measurements.

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锂反钙钛矿衍生的玻璃固体电解质

本文报道了Li2OHX （X = Br, Cl）基玻璃的合成。这些玻璃被发现是具有挑战性的合成，需要极端的冷却速度，只有通过双辊淬火工艺才能实现。正如对反钙钛矿衍生玻璃的推测，观察到改善锂离子动力学的迹象。值得注意的是，自旋晶格弛豫核磁共振谱显示Li2OHBr玻璃（0.29 eV）比Li2OHBr晶体（0.39 eV）有更高的跳频和明显更低的活化能。这可能是由于玻璃样品中的自由体积增加（ρglass/ρ crystal = 0.83），锂离子与玻璃结构的离子相互作用减少。尽管有这些有希望的发现，玻璃在压力下被发现是不稳定的，并且在试图生产用于阻抗测量的大块样品时结晶。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.