离子液体功能化金属有机框架及其用于锂离子传导的高性能固体电解质

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2024-11-11 DOI:10.1039/d4dt02756f

Xiang Kun Cui, Yu Ding, Li Feng, Li Ming Chen, Yang Mei Hu, Hui Chen, Chong-Qing Wan

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引用次数: 0

摘要

在此，我们报告了一种基于 MOF 基质和 Li+ 离子液体的新型固态电解质。通过在稳定的 UiO-67 框架上共价键合 Li+ 离子液体（MIMS-LiTFSI），得到的结晶ILLi-MOF 材料在宽温度范围内表现出高离子电导率（30 oC 1.62 × 10-3 S cm-1，110 oC 1.26 × 10-2 S cm-1）和高效的 Li+ 传输（tLi+ = 0.88）[MIMS：1-（1-甲基-3-咪唑）丙烷-3-磺酸盐，LiTFSI：双（三氟甲烷磺酰基）亚胺锂]。表征和对照实验表明，离子液体分子（MIMS-LiTFSI）沿无限通道有序排列，MOF 中的超微孔（< 1 nm）很好地实现了 Li+ 的高效靶向转移。此外，这种 "二合一 "策略还赋予了这种晶体电解质所需的微燃性、稳定性和无泄漏性等优点。

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Ionic-liquid Functionalized Metal-organic Framework and Its High Performance Solid Electrolyte for Lithium-ion Conduction

Herein, we report a new type solid-state electrolyte based on MOF matrix and Li+ ionic liquid. By covalent bonding the Li+ ionic liquids (MIMS·LiTFSI) on the stable UiO-67 framework, the obtained crystallineILLi-MOF material exhibited high ion conductivities within the wide temperature range (30 oC 1.62 × 10-3 S cm-1, 110 oC 1.26 × 10-2 S cm-1) and efficient Li+ transport (tLi+ = 0.88) [MIMS: 1-(1-mthyl-3-imidazolio) propane-3-sulfonate), LiTFSI: lithium bis(trifluoromethane sulfonyl)imide]. Characterization and control experiment showed the ordered structure of ionic-liquid moiety (MIMS·LiTFSI) arranged along the infinite channel with the ultramicropore (< 1 nm) in the MOF well accounted for the high and efficient target Li+ transfer. Also，such two in one strategy endows such crystalline electrolyte with the merits such as umflammalbe property, stable and unleakage desired.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.