Abstract
Ionic diodes are components in ionic circuits for AC-electricity driven desalination and ion extraction processes. Independent of the ionic diode type/mechanism, achieving ionic current rectification at high ionic strengths is challenging but important, for example in seawater desalination and treatment of brine. Here, the butylation of a molecularly rigid (glassy) polymer of intrinsic microporosity (PIM-EA-TB) is shown to give anionic diodes with ultrahigh rectification effects (associated with interfacial resistivity) even in high ionic strength aqueous 2 M NaCl solution. The effect is rationalised based on polymer structure affecting ion transport.
Original language | English |
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Article number | e202300807 |
Journal | ChemElectroChem |
Volume | 11 |
Issue number | 9 |
Early online date | 7 Mar 2024 |
DOIs | |
Publication status | Published - 2 May 2024 |
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.Funding
F.M. thanks for the initial financial support by the EPSRC (EP/K004956/1). R.A. and D.J.F. also acknowledge the financial support by the EPSRC (EP/V008676/1)
Funders | Funder number |
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Engineering and Physical Sciences Research Council | EP/K004956/1, EP/V008676/1 |
Keywords
- brine
- electroosmosis
- ionic semiconductor
- iontronics
- seawater
- voltammetry
ASJC Scopus subject areas
- Catalysis
- Electrochemistry