Ion transport in gel and gel–liquid systems for LiClO4-doped PMMA at the meso- and nanoscales
| Autor: | Mya Le Thai, Reginald M. Penner, Josslyn Cai, Ivan Vlassiouk, Timothy S. Plett, Zuzanna S. Siwy |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Doping Analytical chemistry Ionic bonding Ion current 02 engineering and technology Electrolyte Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion Nanopore Chemical engineering General Materials Science 0210 nano-technology Ion transporter |
| Zdroj: | Nanoscale. 9:16232-16243 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/c7nr06719d |
| Popis: | Solid and gel electrolytes offer significant advantages for cycle stability and longevity in energy storage technologies. These advantages come with trade-offs such as reduced conductivity and ion mobility, which can impact power density in storage devices even at the nanoscale. Here we propose experiments aimed at exploring the ion transport properties of a hybrid electrolyte system of liquid and gel electrolytes with meso and nanoscale components. We focus on single pore systems featuring LiClO4-propylene carbonate and LiClO4-PMMA gel, which are model electrolytes for energy storage devices. We identified conditions at which the systems considered featured rectifying current-voltage curves, indicating a preferential direction of ion transport. The presented ion current rectification suggests different mechanisms arising from the unique hybrid system: (i) PMMA structure imposing selectivity in fully immersed systems and (ii) ionic selectivity linked to ion sourcing from media of different ionic mobility. These mechanisms were observed to interplay with ion transport properties linked to nanopore structure i.e. cylindrical and conical. |
| Databáze: | OpenAIRE |
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