Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries
In this article, the specific features of competitive ionic and molecular transport in nanocomposite systems based on network membranes synthesized by radical polymerization of polyethylene glycol diacrylate in the presence of LiBF<sub>4</sub>, 1-ethyl-3-methylimidazolium tetrafluorobora...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/9/776 |
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| author | Nikita A. Slesarenko Alexander V. Chernyak Kyunsylu G. Khatmullina Guzaliya R. Baymuratova Alena V. Yudina Galiya Z. Tulibaeva Alexander F. Shestakov Vitaly I. Volkov Olga V. Yarmolenko |
| author_facet | Nikita A. Slesarenko Alexander V. Chernyak Kyunsylu G. Khatmullina Guzaliya R. Baymuratova Alena V. Yudina Galiya Z. Tulibaeva Alexander F. Shestakov Vitaly I. Volkov Olga V. Yarmolenko |
| author_sort | Nikita A. Slesarenko |
| collection | DOAJ |
| description | In this article, the specific features of competitive ionic and molecular transport in nanocomposite systems based on network membranes synthesized by radical polymerization of polyethylene glycol diacrylate in the presence of LiBF<sub>4</sub>, 1-ethyl-3-methylimidazolium tetrafluoroborate, ethylene carbonate (EC), and TiO<sub>2</sub> nanopowder (d~21 nm) were studied for <sup>1</sup>H, <sup>7</sup>Li, <sup>11</sup>B, <sup>13</sup>C, and <sup>19</sup>F nuclei using NMR. The membranes obtained were studied through electrochemical impedance, IR-Fourier spectroscopy, DSC, and TGA. The ionic conductivity of the membranes was up to 4.8 m Scm<sup>−1</sup> at room temperature. The operating temperature range was from −40 to 100 °C. Two types of molecular and ionic transport (fast and slow) have been detected by pulsed field gradient NMR. From quantum chemical modeling, it follows that the difficulty of lithium transport is due to the strong chemisorption of BF<sub>4</sub><sup>–</sup> anions with counterions on the surface of TiO<sub>2</sub> nanoparticles. The theoretical conclusion about the need to increase the proportion of EC in order to reduce the influence of this effect was confirmed by an experimental study of a system with 4 moles of EC. It has been shown that this approach leads to an increase in lithium conductivity in an ionic liquid medium, which is important for the development of thermostable nanocomposite electrolytes for Li//LiFePO<sub>4</sub> batteries with a base of lithium salts and aprotonic imidasolium ionic liquid. |
| first_indexed | 2024-03-10T22:29:34Z |
| format | Article |
| id | doaj.art-fd1c35e51fc543a4b022d934a8c5f824 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T22:29:34Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-fd1c35e51fc543a4b022d934a8c5f8242023-11-19T11:54:18ZengMDPI AGMembranes2077-03752023-09-0113977610.3390/membranes13090776Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium BatteriesNikita A. Slesarenko0Alexander V. Chernyak1Kyunsylu G. Khatmullina2Guzaliya R. Baymuratova3Alena V. Yudina4Galiya Z. Tulibaeva5Alexander F. Shestakov6Vitaly I. Volkov7Olga V. Yarmolenko8Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, 142432 Chernogolovka, RussiaIn this article, the specific features of competitive ionic and molecular transport in nanocomposite systems based on network membranes synthesized by radical polymerization of polyethylene glycol diacrylate in the presence of LiBF<sub>4</sub>, 1-ethyl-3-methylimidazolium tetrafluoroborate, ethylene carbonate (EC), and TiO<sub>2</sub> nanopowder (d~21 nm) were studied for <sup>1</sup>H, <sup>7</sup>Li, <sup>11</sup>B, <sup>13</sup>C, and <sup>19</sup>F nuclei using NMR. The membranes obtained were studied through electrochemical impedance, IR-Fourier spectroscopy, DSC, and TGA. The ionic conductivity of the membranes was up to 4.8 m Scm<sup>−1</sup> at room temperature. The operating temperature range was from −40 to 100 °C. Two types of molecular and ionic transport (fast and slow) have been detected by pulsed field gradient NMR. From quantum chemical modeling, it follows that the difficulty of lithium transport is due to the strong chemisorption of BF<sub>4</sub><sup>–</sup> anions with counterions on the surface of TiO<sub>2</sub> nanoparticles. The theoretical conclusion about the need to increase the proportion of EC in order to reduce the influence of this effect was confirmed by an experimental study of a system with 4 moles of EC. It has been shown that this approach leads to an increase in lithium conductivity in an ionic liquid medium, which is important for the development of thermostable nanocomposite electrolytes for Li//LiFePO<sub>4</sub> batteries with a base of lithium salts and aprotonic imidasolium ionic liquid.https://www.mdpi.com/2077-0375/13/9/776nanocomposite polymer gel electrolytesLi//LiFePO<sub>4</sub> batteryTiO<sub>2</sub> nanoparticlesPFG NMRself-diffusion coefficientsionic conductivity |
| spellingShingle | Nikita A. Slesarenko Alexander V. Chernyak Kyunsylu G. Khatmullina Guzaliya R. Baymuratova Alena V. Yudina Galiya Z. Tulibaeva Alexander F. Shestakov Vitaly I. Volkov Olga V. Yarmolenko Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries Membranes nanocomposite polymer gel electrolytes Li//LiFePO<sub>4</sub> battery TiO<sub>2</sub> nanoparticles PFG NMR self-diffusion coefficients ionic conductivity |
| title | Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries |
| title_full | Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries |
| title_fullStr | Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries |
| title_full_unstemmed | Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries |
| title_short | Nanocomposite Polymer Gel Electrolyte Based on TiO<sub>2</sub> Nanoparticles for Lithium Batteries |
| title_sort | nanocomposite polymer gel electrolyte based on tio sub 2 sub nanoparticles for lithium batteries |
| topic | nanocomposite polymer gel electrolytes Li//LiFePO<sub>4</sub> battery TiO<sub>2</sub> nanoparticles PFG NMR self-diffusion coefficients ionic conductivity |
| url | https://www.mdpi.com/2077-0375/13/9/776 |
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