Ionic liquid confined in MOF/polymerized ionic network core-shell host as a solid electrolyte for lithium batteries

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Tian, Xiaolu, Yi, Yikun, Wu, Zhendi, Cheng, Guangyu, Zheng, Shentuo, Fang, Binren, Wang, Tao, Shchukin, Dmitry G ORCID: 0000-0002-2936-804X, Hai, Feng, Guo, Jingyu et al (show 1 more authors) and Li, Mingtao (2022) Ionic liquid confined in MOF/polymerized ionic network core-shell host as a solid electrolyte for lithium batteries. CHEMICAL ENGINEERING SCIENCE, 266. p. 118271.

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Official URL: http://dx.doi.org/10.1016/j.ces.2022.118271

Abstract

Although the low tLi+ and fluid nature of ionic liquid electrolytes can lead to weakened rate capability and higher leakage risks, these challenges can be tackled by incorporating ILs into solid hosts with controlled properties. Herein, we designed a heterogeneous metal organic framework (MOF)/polymerized ionic network (PIN) core-shell composite as a porous host for IL N,N-diethyl-N-(2-methoxyethyl)-N-methylammonium bis(trifluoromethylsulphonyl)imide (DEME-TFSI). The PIN shell with abundant ionic structures exhibit nice compatibility with ILs to achieve high loading, while the MOF core has narrow nanopores to confine large anions in ILs and enhance Li+ selectivity. The as-synthesized conductive solid electrolyte (HKUST@PIN-IL-Li) showed high IL loading, high ionic conductivity over 4 × 10−4 S cm−1 at 25 °C and increased Li+ transfer number (0.367) in comparison to hollow H-PIN-IL-Li and bare IL-Li electrolyte. Overall, our research demonstrates for the first time a novel MOF@PIN core-shell structure as a solid framework for IL with high battery performance.

Item Type:	Article
Additional Information:	Source info: CEJ-D-22-06762
Uncontrolled Keywords:	Ionic liquid electrolytes, Lithium batteries, Metal organic frameworks, Polymerized ionic network, Solid electrolytes
Divisions:	Faculty of Science and Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	13 Dec 2023 09:51
Last Modified:	05 Jan 2024 16:43
DOI:	10.1016/j.ces.2022.118271
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3177282