Solid-State Ionic Diodes Demonstrated in Conical Nanopores
| Autor: | Ivan Vlassiouk, Timothy S. Plett, Wenjia Cai, Zuzanna S. Siwy, Mya Le Thai, Reginald M. Penner |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Materials science Doping Inorganic chemistry Ionic bonding 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Nanopore General Energy chemistry Chemical engineering Propylene carbonate Physical and Theoretical Chemistry Methyl methacrylate 0210 nano-technology Diode |
| Zdroj: | The Journal of Physical Chemistry C. 121:6170-6176 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.7b00258 |
| Popis: | Ionic transport at the nanoscale features phenomena that are not observed in larger systems. Nonlinear current–voltage curves characteristic of ionic diodes as well as ion selectivity are examples of effects observed at the nanoscale. Many man-made nanopore systems are inspired by biological channels in a cell membrane, thus measurements are often performed in aqueous solutions. Consequently, much less is known about ionic transport in nonaqueous systems, especially in solid-state electrolytes. Here we show ionic transport through single pores filled with gel electrolyte of poly(methyl methacrylate) (PMMA) doped with LiClO4 in propylene carbonate. The system has no liquid interface and the ionic transport occurs through the porous gel structure. We demonstrate that a conically shaped nanopore filled with the gel rectifies the current and works as a solid-state ionic diode. |
| Databáze: | OpenAIRE |
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