Breaking Ion Clusters: Size Asymmetry for Faster Ion Transport in Polymer Electrolytes
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912674152972288 |
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| author | Rajahmundry, Ganesh K Patra, Tarak K |
| author_facet | Rajahmundry, Ganesh K Patra, Tarak K |
| contents | Solid polymer electrolytes (SPEs) are ion-containing solid materials composed of a polymer matrix that enables ionic transport while maintaining the mechanical stability. The conventional wisdom is that for a high ion concentration, ions microphase separate from the polymer matrix, resulting in poor conductivity. Instead, we show that a high ion size ratio promotes better mixing of the ions with the polymer matrix. Under these conditions, the ion-dipole moment interaction dominates over the ion-ion interaction and improves the ion dispersion in the polymer matrix. The ion size ratio is thus a key to tailor the properties of these materials with immediate relevance to the development of SPEs for energy storage devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_24580 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Breaking Ion Clusters: Size Asymmetry for Faster Ion Transport in Polymer Electrolytes Rajahmundry, Ganesh K Patra, Tarak K Soft Condensed Matter Solid polymer electrolytes (SPEs) are ion-containing solid materials composed of a polymer matrix that enables ionic transport while maintaining the mechanical stability. The conventional wisdom is that for a high ion concentration, ions microphase separate from the polymer matrix, resulting in poor conductivity. Instead, we show that a high ion size ratio promotes better mixing of the ions with the polymer matrix. Under these conditions, the ion-dipole moment interaction dominates over the ion-ion interaction and improves the ion dispersion in the polymer matrix. The ion size ratio is thus a key to tailor the properties of these materials with immediate relevance to the development of SPEs for energy storage devices. |
| title | Breaking Ion Clusters: Size Asymmetry for Faster Ion Transport in Polymer Electrolytes |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2510.24580 |