Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes
Solid polymer electrolytes (SPEs) have garnered significant attention due to their potential in all-solid-state batteries (ASSBs). However, adoption remains constrained by challenges such as low thermal stability and limited ionic conductivity. Here, we report on an electrospun (PAN/PEO)- conductive...
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MDPI AG
2025-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/15/7/196 |
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| author | Anna Maria Kirchberger Patrick Walke Janio Venturini Leo van Wüllen Tom Nilges |
| author_facet | Anna Maria Kirchberger Patrick Walke Janio Venturini Leo van Wüllen Tom Nilges |
| author_sort | Anna Maria Kirchberger |
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| description | Solid polymer electrolytes (SPEs) have garnered significant attention due to their potential in all-solid-state batteries (ASSBs). However, adoption remains constrained by challenges such as low thermal stability and limited ionic conductivity. Here, we report on an electrospun (PAN/PEO)- conductive salt (LiBF<sub>4</sub>) system, where the influence of varying polyacrylonitrile (PAN) and polyethylene oxide (PEO) ratios, along with different plasticizer concentrations, is evaluated. Notably, the 50:50 PAN/PEO sample exhibited the highest ionic conductivity, reaching 1∙10<sup>−2</sup> S/cm at 55 °C. This system also balanced conductivity and processability. Succinonitrile (SN) significantly influenced the morphology and conductivity. Samples with increased SN content showed enhanced capacity in symmetrical cells, achieving ~140 mAs/cm<sup>2</sup> for an 18:9:1 polymer (PAN/PEO):SN:conductive salt (LiBF<sub>4</sub>) composition. The enhanced lithium-ion conductivity of the electrospun blend is attributed to the deliberate use of an unmixable PAN–PEO system. Their immiscibility creates well-defined interfacial regions within fibers, acting as efficient lithium-ion pathways. These findings support electrospun polymer blends as promising candidates for high-performance SPEs for ASSB development. |
| format | Article |
| id | doaj-art-5291fe8bb8094a6bbe0e5756e47ef5f5 |
| institution | Kabale University |
| issn | 2077-0375 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Membranes |
| spelling | doaj-art-5291fe8bb8094a6bbe0e5756e47ef5f52025-08-20T03:32:14ZengMDPI AGMembranes2077-03752025-06-0115719610.3390/membranes15070196Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer ElectrolytesAnna Maria Kirchberger0Patrick Walke1Janio Venturini2Leo van Wüllen3Tom Nilges4TUM School of Natural Sciences, Technische Universität München, Lichtenbergstr. 4, 85748 Garching bei München, GermanyTUM School of Natural Sciences, Technische Universität München, Lichtenbergstr. 4, 85748 Garching bei München, GermanyTUM School of Natural Sciences, Technische Universität München, Lichtenbergstr. 4, 85748 Garching bei München, GermanyInstitute of Physics, University of Augsburg, Universitätsstraße 1, 86159 Augsburg, GermanyTUM School of Natural Sciences, Technische Universität München, Lichtenbergstr. 4, 85748 Garching bei München, GermanySolid polymer electrolytes (SPEs) have garnered significant attention due to their potential in all-solid-state batteries (ASSBs). However, adoption remains constrained by challenges such as low thermal stability and limited ionic conductivity. Here, we report on an electrospun (PAN/PEO)- conductive salt (LiBF<sub>4</sub>) system, where the influence of varying polyacrylonitrile (PAN) and polyethylene oxide (PEO) ratios, along with different plasticizer concentrations, is evaluated. Notably, the 50:50 PAN/PEO sample exhibited the highest ionic conductivity, reaching 1∙10<sup>−2</sup> S/cm at 55 °C. This system also balanced conductivity and processability. Succinonitrile (SN) significantly influenced the morphology and conductivity. Samples with increased SN content showed enhanced capacity in symmetrical cells, achieving ~140 mAs/cm<sup>2</sup> for an 18:9:1 polymer (PAN/PEO):SN:conductive salt (LiBF<sub>4</sub>) composition. The enhanced lithium-ion conductivity of the electrospun blend is attributed to the deliberate use of an unmixable PAN–PEO system. Their immiscibility creates well-defined interfacial regions within fibers, acting as efficient lithium-ion pathways. These findings support electrospun polymer blends as promising candidates for high-performance SPEs for ASSB development.https://www.mdpi.com/2077-0375/15/7/196solid polymer electrolytesall-solid-state batterieselectrospinningconductivity |
| spellingShingle | Anna Maria Kirchberger Patrick Walke Janio Venturini Leo van Wüllen Tom Nilges Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes Membranes solid polymer electrolytes all-solid-state batteries electrospinning conductivity |
| title | Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes |
| title_full | Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes |
| title_fullStr | Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes |
| title_full_unstemmed | Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes |
| title_short | Highly Conductive PEO/PAN-Based SN-Containing Electrospun Membranes as Solid Polymer Electrolytes |
| title_sort | highly conductive peo pan based sn containing electrospun membranes as solid polymer electrolytes |
| topic | solid polymer electrolytes all-solid-state batteries electrospinning conductivity |
| url | https://www.mdpi.com/2077-0375/15/7/196 |
| work_keys_str_mv | AT annamariakirchberger highlyconductivepeopanbasedsncontainingelectrospunmembranesassolidpolymerelectrolytes AT patrickwalke highlyconductivepeopanbasedsncontainingelectrospunmembranesassolidpolymerelectrolytes AT janioventurini highlyconductivepeopanbasedsncontainingelectrospunmembranesassolidpolymerelectrolytes AT leovanwullen highlyconductivepeopanbasedsncontainingelectrospunmembranesassolidpolymerelectrolytes AT tomnilges highlyconductivepeopanbasedsncontainingelectrospunmembranesassolidpolymerelectrolytes |