Effect of the Solvate Environment of Lithium Cations on the Resistance of the Polymer Electrolyte/Electrode Interface in a Solid-State Lithium Battery

被引：5
|
作者：
Chernyak, Alexander, V [1 ,2 ]
Slesarenko, Nikita A. [1 ]
Slesarenko, Anna A. [1 ]
Baymuratova, Guzaliya R. [1 ]
Tulibaeva, Galiya Z. [1 ]
Yudina, Alena, V [1 ]
Volkov, Vitaly, I [1 ,2 ]
Shestakov, Alexander F. [1 ,3 ]
Yarmolenko, Olga, V [1 ]
机构：
[1] Fed Res Ctr Problems Chem Phys & Med Chem RAS, Chernogolovka 142432, Russia
[2] Sci Ctr Chernogolovka RAS, Chernogolovka 142432, Russia
[3] Moscow MV Lomonosov State Univ, Fac Fundamental Phys & Chem Engn, Moscow 119991, Russia
来源：
MEMBRANES | 2022年 / 12卷 / 11期
关键词：
polymer electrolyte; nanocomposite; organic electrolyte; solid-state lithium battery; solvate shell; NMR; self-diffusion coefficients; chemical shifts; quantum chemical modeling; ION-PAIR FORMATION; GEL ELECTROLYTE; NANOCOMPOSITE; TRANSPORT; CONDUCTIVITY; DIACRYLATE; DIFFUSION; FEATURES; CONTACT; SOLVENT;
D O I：
10.3390/membranes12111111
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The effect of the composition of liquid electrolytes in the bulk and at the interface with the LiFePO4 cathode on the operation of a solid-state lithium battery with a nanocomposite polymer gel electrolyte based on polyethylene glycol diacrylate and SiO2 was studied. The self-diffusion coefficients on the 7Li, 1H, and 19F nuclei in electrolytes based on LiBF4 and LiTFSI salts in solvents (gamma-butyrolactone, dioxolane, dimethoxyethane) were measured by nuclear magnetic resonance (NMR) with a magnetic field gradient. Four compositions of the complex electrolyte system were studied by high-resolution NMR. The experimentally obtained H-1 chemical shifts are compared with those theoretically calculated by quantum chemical modeling. This made it possible to suggest the solvate shell compositions that facilitate the rapid transfer of the Li+ cation at the nanocomposite electrolyte/LiFePO4 interface and ensure the stable operation of a solid-state lithium battery.
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页数：16
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