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Tunable Anion Exchange Membrane Conductivity and Permselectivity via Non-Covalent, Hydrogen Bond Cross-Linking
| Content Provider | eScholarship Repository: University of California |
|---|---|
| Author | Kingsbury, Ryan Hegde, Maruti Wang, Jingbo Kusoglu, Ahmet You, Wei Coronell, Orlando |
| Abstract | Ion exchange membranes (IEMs) are a key component of electrochemical processes that purify water, generate clean energy, and treat waste. Most conventional polymer IEMs are covalently cross-linked, which results in a challenging tradeoff relationship between two desirable properties─high permselectivity and high conductivity─in which one property cannot be changed without negatively affecting the other. In an attempt to overcome this limitation, in this work we synthesized a series of anion exchange membranes containing non-covalent cross-links formed by a hydrogen bond donor (methacrylic acid) and a hydrogen bond acceptor (dimethylacrylamide). We show that these monomers act synergistically to improve both membrane permselectivity and conductivity relative to a control membrane without non-covalent cross-links. Furthermore, we show that the hydrogen bond donor and acceptor loading can be used to tune permselectivity and conductivity relatively independently of one another, escaping the tradeoff observed in conventional membranes. |
| File Format | |
| DOI | 10.1021/acsami.1c15474 |
| Alternate Webpage(s) | https://escholarship.org/uc/item/16v9f24h |
| Journal | ACS Applied Materials & Interfaces |
| Issue Number | 44 |
| Volume Number | 13 |
| Language | English |
| Publisher Date | 2021-11-10 |
| Access Restriction | Open |
| Rights License | https://creativecommons.org/licenses/by-nc/4.0/ |
| Subject Keyword | Ion Exchange Membrane Hydrogen Bonding Electrodialysis Non-Covalent Cross-Linking Anion Exchange Membrane Engineering Chemical Sciences Physical Chemistry Affordable and Clean Energy Nanoscience & Nanotechnology Physical sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Science Nanoscience and Nanotechnology Medicine |
