POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES

POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES

A composite solid electrolyte based on the fluoropolymer Neoflon VT-475, the ionic liquid PYR14-TFSI, and the lithium salt LiTFSI has been developed and studied for use in solid-state lithium-ion batteries. As a lithium-conductive additive, nanoparticles of Li1.3Al0.3Ti1.7(PO4)3 (LATP) with a NASICO...

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Date:2025
Main Authors: Yefimishch, Iryna, Bubela, Galina, Syvolozhsky, Oleksii, Stryzhakova, Natalia, Maletin, Yurii, Lisovskyi, Ivan
Format: Article
Language:English
Published: V.I.Vernadsky Institute of General and Inorganic Chemistry 2025
Online Access:https://ucj.org.ua/index.php/journal/article/view/743
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Journal Title:Ukrainian Chemistry Journal

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Ukrainian Chemistry Journal
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spelling oai:ojs2.1444248.nisspano.web.hosting-test.net:article-7432025-11-25T14:50:37Z POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES Yefimishch, Iryna Bubela, Galina Syvolozhsky, Oleksii Stryzhakova, Natalia Maletin, Yurii Lisovskyi, Ivan solid-state LIB, polymeric electrolyte, LATP. A composite solid electrolyte based on the fluoropolymer Neoflon VT-475, the ionic liquid PYR14-TFSI, and the lithium salt LiTFSI has been developed and studied for use in solid-state lithium-ion batteries. As a lithium-conductive additive, nanoparticles of Li1.3Al0.3Ti1.7(PO4)3 (LATP) with a NASICON-type structure were introduced into the electrolyte composition, providing three-dimensional channels for efficient lithium-ion migration. LATP was synthesized using a sol-gel method, which enabled the production of particles with high ionic conductivity and a stable crystalline structure. The methodology for fabricating the electrolyte in the form of a film is described, along with its characteristics, including elect­rochemical properties, which were investigated in laboratory battery prototypes with a LiFePO4 (LFP) cathode and a Li4Ti5O12 (LTO) anode modified with LATP. To improve interfacial contact between the solid electrolyte and the electrodes, a liquid-phase treatment was applied. The electrode surfaces were additionally impregnated with a polymer solution to enhance adhesion and interfacial contact. This approach reduced interfacial resistance, improved ion transport, and ensured stable performance during long-term cycling. The study showed that the developed prototypes with the composite solid electrolyte demonstra­ted specific capacities comparable to those of samples with liquid electrolytes under current loads up to 4C. Long-term cycling statistics indicated a high level of stability, with capacity degradation not exceeding 6% after 130 full charge-discharge cycles. The developed electrolyte is promising for use in solid-state lithium-ion batteries with improved performance, safety, and durability, as its structure and composition help reduce dendrite formation risk, enhance interfacial layer stability, and maintain high ionic conductivity even under high loads.   V.I.Vernadsky Institute of General and Inorganic Chemistry 2025-09-25 Article Article Physical chemistry Физическая xимия Фізична xімія application/pdf https://ucj.org.ua/index.php/journal/article/view/743 10.33609/2708-129X.91.8.2025.13-22 Ukrainian Chemistry Journal; Vol. 91 No. 8 (2025): Ukrainian Chemistry Journal; 13-22 Украинский химический журнал; Том 91 № 8 (2025): Ukrainian Chemistry Journal; 13-22 Український хімічний журнал; Том 91 № 8 (2025): Ukrainian Chemistry Journal; 13-22 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/743/379
institution Ukrainian Chemistry Journal
baseUrl_str
datestamp_date 2025-11-25T14:50:37Z
collection OJS
language English
topic_facet solid-state LIB
polymeric electrolyte
LATP.
format Article
author Yefimishch, Iryna
Bubela, Galina
Syvolozhsky, Oleksii
Stryzhakova, Natalia
Maletin, Yurii
Lisovskyi, Ivan
spellingShingle Yefimishch, Iryna
Bubela, Galina
Syvolozhsky, Oleksii
Stryzhakova, Natalia
Maletin, Yurii
Lisovskyi, Ivan
POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
author_facet Yefimishch, Iryna
Bubela, Galina
Syvolozhsky, Oleksii
Stryzhakova, Natalia
Maletin, Yurii
Lisovskyi, Ivan
author_sort Yefimishch, Iryna
title POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
title_short POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
title_full POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
title_fullStr POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
title_full_unstemmed POLYMERIC COMPOSITE ELECTROLYTE BASED ON NASICON FOR SOLID-STATE LITHIUM BATTERIES
title_sort polymeric composite electrolyte based on nasicon for solid-state lithium batteries
description A composite solid electrolyte based on the fluoropolymer Neoflon VT-475, the ionic liquid PYR14-TFSI, and the lithium salt LiTFSI has been developed and studied for use in solid-state lithium-ion batteries. As a lithium-conductive additive, nanoparticles of Li1.3Al0.3Ti1.7(PO4)3 (LATP) with a NASICON-type structure were introduced into the electrolyte composition, providing three-dimensional channels for efficient lithium-ion migration. LATP was synthesized using a sol-gel method, which enabled the production of particles with high ionic conductivity and a stable crystalline structure. The methodology for fabricating the electrolyte in the form of a film is described, along with its characteristics, including elect­rochemical properties, which were investigated in laboratory battery prototypes with a LiFePO4 (LFP) cathode and a Li4Ti5O12 (LTO) anode modified with LATP. To improve interfacial contact between the solid electrolyte and the electrodes, a liquid-phase treatment was applied. The electrode surfaces were additionally impregnated with a polymer solution to enhance adhesion and interfacial contact. This approach reduced interfacial resistance, improved ion transport, and ensured stable performance during long-term cycling. The study showed that the developed prototypes with the composite solid electrolyte demonstra­ted specific capacities comparable to those of samples with liquid electrolytes under current loads up to 4C. Long-term cycling statistics indicated a high level of stability, with capacity degradation not exceeding 6% after 130 full charge-discharge cycles. The developed electrolyte is promising for use in solid-state lithium-ion batteries with improved performance, safety, and durability, as its structure and composition help reduce dendrite formation risk, enhance interfacial layer stability, and maintain high ionic conductivity even under high loads.  
publisher V.I.Vernadsky Institute of General and Inorganic Chemistry
publishDate 2025
url https://ucj.org.ua/index.php/journal/article/view/743
work_keys_str_mv AT yefimishchiryna polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
AT bubelagalina polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
AT syvolozhskyoleksii polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
AT stryzhakovanatalia polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
AT maletinyurii polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
AT lisovskyiivan polymericcompositeelectrolytebasedonnasiconforsolidstatelithiumbatteries
first_indexed 2025-12-02T15:13:46Z
last_indexed 2025-12-02T15:13:46Z
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