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A Hybrid Oleic-Acid-Derived Polymer Electrolyte Integrating Single- and Dual-Ion Conducting Systems for Lithium-Ion Batteries.

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Title: A Hybrid Oleic-Acid-Derived Polymer Electrolyte Integrating Single- and Dual-Ion Conducting Systems for Lithium-Ion Batteries.
Authors: Bae, Wansu1 (AUTHOR), Chandra, Sutradhar Sabuj1 (AUTHOR), Lee, Doyul1 (AUTHOR), Kang, Donghoon1 (AUTHOR), Na, Hyewon1 (AUTHOR), Lee, Jiye1 (AUTHOR), Jang, Hohyoun1 (AUTHOR) 200417450@kku.ac.kr
Source: Polymers (20734360). Mar2026, Vol. 18 Issue 6, p773. 16p.
Subjects: Lithium-ion batteries, Fatty acid derivatives, Polymerization, Polyelectrolytes, Ion mobility, Ionic conductivity
Abstract: In this work, a hybrid polymer electrolyte integrating single- and dual-ion conducting systems was developed for lithium-ion batteries using bio-based materials, namely oleic-acid derivatives and epoxidized soybean oil, through an in situ polymerization process. The fixed FSI anions in LiEFSOA enhance the selectivity of Li+ transport, while the cross-linked network formed by ESO provides mechanical stability, and the LiFSI incorporated into the polymer matrix helps maintain sufficient overall ionic conductivity. In addition, the long C18 oleic chains increase the internal free volume of the matrix, thereby improving segmental mobility within the amorphous phase. The in situ polymerization inside the cell causes intimate interfacial contact between the electrode and electrolyte, achieving an ionic conductivity of 1.05 × 10−4 S cm−1 at 30 °C. Electrochemical evaluation using LiFePO4/FSOA-2/Li cells shows an initial discharge capacity of 149.09 mAh g−1 and a capacity retention of 81.09% after 100 cycles, and the average coulombic efficiency was 99.62%, demonstrating that the designed FSOA electrolyte exhibits stable cycling performance and competitive capacity. Overall, the combination of eco-friendly materials and a hybrid ion transport strategy provides a promising platform for developing sustainable and high-performance polymer electrolytes for lithium-ion batteries. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Group: Ti
  Data: A Hybrid Oleic-Acid-Derived Polymer Electrolyte Integrating Single- and Dual-Ion Conducting Systems for Lithium-Ion Batteries.
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  Data: <searchLink fieldCode="AR" term="%22Bae%2C+Wansu%22">Bae, Wansu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chandra%2C+Sutradhar+Sabuj%22">Chandra, Sutradhar Sabuj</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Doyul%22">Lee, Doyul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kang%2C+Donghoon%22">Kang, Donghoon</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Na%2C+Hyewon%22">Na, Hyewon</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Jiye%22">Lee, Jiye</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jang%2C+Hohyoun%22">Jang, Hohyoun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 200417450@kku.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Mar2026, Vol. 18 Issue 6, p773. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Fatty+acid+derivatives%22">Fatty acid derivatives</searchLink><br /><searchLink fieldCode="DE" term="%22Polymerization%22">Polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Polyelectrolytes%22">Polyelectrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Ion+mobility%22">Ion mobility</searchLink><br /><searchLink fieldCode="DE" term="%22Ionic+conductivity%22">Ionic conductivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this work, a hybrid polymer electrolyte integrating single- and dual-ion conducting systems was developed for lithium-ion batteries using bio-based materials, namely oleic-acid derivatives and epoxidized soybean oil, through an in situ polymerization process. The fixed FSI anions in LiEFSOA enhance the selectivity of Li+ transport, while the cross-linked network formed by ESO provides mechanical stability, and the LiFSI incorporated into the polymer matrix helps maintain sufficient overall ionic conductivity. In addition, the long C18 oleic chains increase the internal free volume of the matrix, thereby improving segmental mobility within the amorphous phase. The in situ polymerization inside the cell causes intimate interfacial contact between the electrode and electrolyte, achieving an ionic conductivity of 1.05 × 10−4 S cm−1 at 30 °C. Electrochemical evaluation using LiFePO4/FSOA-2/Li cells shows an initial discharge capacity of 149.09 mAh g−1 and a capacity retention of 81.09% after 100 cycles, and the average coulombic efficiency was 99.62%, demonstrating that the designed FSOA electrolyte exhibits stable cycling performance and competitive capacity. Overall, the combination of eco-friendly materials and a hybrid ion transport strategy provides a promising platform for developing sustainable and high-performance polymer electrolytes for lithium-ion batteries. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym18060773
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        Text: English
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      – SubjectFull: Fatty acid derivatives
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      – SubjectFull: Polymerization
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      – SubjectFull: Polyelectrolytes
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      – SubjectFull: Ionic conductivity
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      – TitleFull: A Hybrid Oleic-Acid-Derived Polymer Electrolyte Integrating Single- and Dual-Ion Conducting Systems for Lithium-Ion Batteries.
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              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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