Free volume impact on ionic conductivity of PVdF/GO/PVP solid polymer electrolytes via positron annihilation approach
Yazarlar (9)
Doç. Dr. Mesut YILMAZOĞLU Yalova Üniversitesi, Türkiye
Doç. Dr. Hikmet OKKAY Yalova Üniversitesi, Türkiye
Ufuk Abacı Kocaeli Üniversitesi, Türkiye
Doç. Dr. Emre TEKAY Yalova Üniversitesi, Türkiye
Ozan Çoban İstanbul Gedik Üniversitesi, Türkiye
Sümeyye Veziroğlu Marmara Üniversitesi, Türkiye
Ayşe Yumak Yahşi Marmara Üniversitesi, Türkiye
Cumali Tav Marmara Üniversitesi, Türkiye
Uğur Yahşi Marmara Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Radiation Physics and Chemistry (Q1) | ||
| Dergi ISSN | 0969-806X Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 01-2025 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-04-2025 |
| Cilt / Sayı / Sayfa | 229 / 1 / 112539–0 | DOI | 10.1016/j.radphyschem.2025.112539 |
| Makale Linki | https://doi.org/10.1016/j.radphyschem.2025.112539 | ||
| Özet |
| This study reports the effects of free volume (FV) profiles on the ionic conductivities of PVdF/GO/PVP ternary polymer electrolytes using positron annihilation lifetime spectroscopy (PALS). The electrolytes were characterized by various tests such as FTIR, XRD, TGA-DTG, SEM, contact angle and DMA. FV profiles were evaluated by o-Ps lifetime (τ₃), intensity (I3) and FV fractions (fυ). PVdF exhibits a proton conductivity of 2.1 × 10⁻5 S/m at 80 °C. However, the introduction of GO leads to a decrease in conductivity, with PVdF/GO showing 1.7 × 10⁻5 S/m at 80 °C. The presence of PVP in PVdF/GO/PVP10 and PVdF/GO/PVP30 creates new FV spaces via hydrogen bonds and intermolecular interactions, expanding hydrophobic areas and increasing I₃ values. PVP's high mobility and positive charge density reduce the τ₃ values. In contrast, I₃ and fυ values decrease in PVdF/GO/PVP50, accompanied by a significant … |
| Anahtar Kelimeler |
| Free volume | Graphene oxide | Positron annihilation | PVdF | PVP |
Science Direct
Free volume impact on ionic conductivity of PVdF/GO/PVP solid polymer electrolytes via positron annihilation approach
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| Google Scholar | 1 |
| Web of Science | 1 |
| Scopus | 1 |