On the Electrochemical Properties of Poly (Vinylidene Fluoride)/Polythiophene Blends Doped with Lithium‐Based Salt
Abstract: In this study, polymer blends of polythiophene (PTH) and poly (vinylidene fluoride) (PVDF) are investigated by focusing on their structural and electrochemical characteristics. These blends displayed immiscibility confirmed through field emission scanning electron microscopy (FE‐SEM) and interaction assessments. PTH's role as a plasticizer is evident, diminishing crystallinity. A rise in PTH level led to a lower glass transition temperature and a higher melting point, suggesting reduced intermolecular forces and increased polymer chain flexibility. Conversely, a dispersed phase presence elevated the melting point, restricting chain movement and crystallization. The thermal properties of blends are enhanced by increased PTH content. Applying the Vogel–Tammann–Fulcher model to ionic conductivity measurements, it observed a direct relationship between temperature and free volume, impacting conductivity and ion transport numbers. Certain materials exhibit increased activation energies, indicating substantial thermodynamic barriers to local motion. Higher PTH content within the PVDF matrix notably increased the lithium ion transfer number from 0.22 to 0.71, a change tied to the C–S–C structure of polythiophene. However, elevated PTH levels also led to diminished negative charge transfer and ionic conductivity in the PTH‐PVDF blend compared to pure PVDF, likely due to an ionic conduction hindrance.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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On the Electrochemical Properties of Poly (Vinylidene Fluoride)/Polythiophene Blends Doped with Lithium‐Based Salt ; day:26 ; month:10 ; year:2024 ; extent:13
Macromolecular materials and engineering ; (26.10.2024) (gesamt 13)
- Urheber
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Kargar‐Esfandabadi, Mahdi
Golshan, Marzieh
Roghani‐Mamaqani, Hossein
Salami‐Kalajahi, Mehdi
- DOI
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10.1002/mame.202400340
- URN
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urn:nbn:de:101:1-2410271311186.827884030232
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:36 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Kargar‐Esfandabadi, Mahdi
- Golshan, Marzieh
- Roghani‐Mamaqani, Hossein
- Salami‐Kalajahi, Mehdi
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