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通过使用异丙醇的液相法合成具有LiGePS结构的氧硫代磷酸锂固体电解质。

Synthesis of lithium oxy-thiophosphate solid electrolytes with LiGePS structure by a liquid phase process using 2-propanol.

作者信息

Shiba Shunichiro, Miura Akira, Fujii Yuta, Tadanaga Kiyoharu, Terai Kota, Utsuno Futoshi, Higuchi Hiroyuki

机构信息

Graduate School of Chemical Sciences and Engineering, Hokkaido University 060-8628 Hokkaido Japan.

Faculty of Engineering, Hokkaido University 060-8628 Hokkaido Japan

出版信息

RSC Adv. 2023 Jul 28;13(33):22895-22900. doi: 10.1039/d3ra03929c. eCollection 2023 Jul 26.

DOI:10.1039/d3ra03929c
PMID:37520098
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10375254/
Abstract

Lithium oxy-thiophosphates isostructural with LiGePS (LGPS) were synthesized by a liquid-phase process using 2-propanol as the solvent and LiS and PS as the starting materials. The XRD and P NMR results indicate that the synthesized compound has a slightly shrieked LGPS-type crystal structure where sulfur in PS is partially replaced by oxygen. The sample synthesized from the nominal composition of LiS : PS = 2.5 : 1 and at the annealing temperature of 300 °C exhibited the ionic conductivity of 1.6 × 10 S cm at 25 °C. The synthesized solid electrolyte was found to be electrochemically stable in the potential range of 0-5 V, and also relatively stable under air with low relative humidity.

摘要

以2-丙醇为溶剂，以LiS和PS为原料，通过液相法合成了与LiGePS（LGPS）同构的氧硫代磷酸锂。XRD和P NMR结果表明，合成的化合物具有略微收缩的LGPS型晶体结构，其中PS中的硫部分被氧取代。由LiS : PS = 2.5 : 1的标称组成在300°C退火温度下合成的样品在25°C时表现出1.6×10 S cm的离子电导率。发现合成的固体电解质在0-5 V的电位范围内具有电化学稳定性，并且在低相对湿度的空气中也相对稳定。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/d4fe5aac1206/d3ra03929c-f8.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/5cd3707dd8ae/d3ra03929c-f5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/dc9ce6541dc9/d3ra03929c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/d4fe5aac1206/d3ra03929c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/4898a2d9b7a4/d3ra03929c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/de60efc114a0/d3ra03929c-f2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/5cd3707dd8ae/d3ra03929c-f5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/dc9ce6541dc9/d3ra03929c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5a97/10375254/d4fe5aac1206/d3ra03929c-f8.jpg

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Formation Mechanism of β-LiPS through Decomposition of Complexes.通过配合物分解形成β-锂多硫化物的机制
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