Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s
Anion exchange membrane fuel cells are a clean and efficient promising future energy source. However, the development of stable high-performance membranes remains a major challenge. Herein we demonstrate that the addition of unfunctionalized triptycene poly(ether sulfones) into 1-methylimidazolium p...
| Main Authors: | , , |
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| Format: | Article |
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American Chemical Society (ACS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/119624 https://orcid.org/0000-0002-6892-8281 |
| _version_ | 1811072803394289664 |
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| author | Moh, Lionel C.H. Kim, Yoonseob Swager, Timothy M |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Moh, Lionel C.H. Kim, Yoonseob Swager, Timothy M |
| author_sort | Moh, Lionel C.H. |
| collection | MIT |
| description | Anion exchange membrane fuel cells are a clean and efficient promising future energy source. However, the development of stable high-performance membranes remains a major challenge. Herein we demonstrate that the addition of unfunctionalized triptycene poly(ether sulfones) into 1-methylimidazolium poly(ether sulfone) enhances membrane's conductivity (up to 0.082 S/cm at 80 °C), minimizes dimensional changes over temperatures from 20 to 80 °C, and enhances stability with 30% of the initial conductivity maintained after 450 h. These enhancements appear to be the result of nanophase separation and internal free volume. Small angle X-ray scattering and transmission electron microscopy reveal that the internal domain size increases (up to 7.44 nm) with increasing triptycene fraction. Keywords: anion exchange membrane; hydroxide conductivity; mechanical property; phase separation; triptycene copolymer |
| first_indexed | 2024-09-23T09:13:59Z |
| format | Article |
| id | mit-1721.1/119624 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:13:59Z |
| publishDate | 2018 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1196242022-09-30T14:07:34Z Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s Moh, Lionel C.H. Kim, Yoonseob Swager, Timothy M Massachusetts Institute of Technology. Department of Chemistry Kim, Yoonseob Swager, Timothy M Anion exchange membrane fuel cells are a clean and efficient promising future energy source. However, the development of stable high-performance membranes remains a major challenge. Herein we demonstrate that the addition of unfunctionalized triptycene poly(ether sulfones) into 1-methylimidazolium poly(ether sulfone) enhances membrane's conductivity (up to 0.082 S/cm at 80 °C), minimizes dimensional changes over temperatures from 20 to 80 °C, and enhances stability with 30% of the initial conductivity maintained after 450 h. These enhancements appear to be the result of nanophase separation and internal free volume. Small angle X-ray scattering and transmission electron microscopy reveal that the internal domain size increases (up to 7.44 nm) with increasing triptycene fraction. Keywords: anion exchange membrane; hydroxide conductivity; mechanical property; phase separation; triptycene copolymer 2018-12-12T20:48:26Z 2018-12-12T20:48:26Z 2017-12 2017-08 2018-12-04T13:26:09Z Article http://purl.org/eprint/type/JournalArticle 1944-8244 1944-8252 http://hdl.handle.net/1721.1/119624 Kim, Yoonseob et al. “Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s.” ACS Applied Materials & Interfaces 9, 49 (December 2017): 42409–42414 © 2017 American Chemical Society https://orcid.org/0000-0002-6892-8281 http://dx.doi.org/10.1021/ACSAMI.7B13058 ACS Applied Materials & Interfaces Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Swager |
| spellingShingle | Moh, Lionel C.H. Kim, Yoonseob Swager, Timothy M Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title | Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title_full | Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title_fullStr | Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title_full_unstemmed | Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title_short | Anion Exchange Membranes: Enhancement by Addition of Unfunctionalized Triptycene Poly(Ether Sulfone)s |
| title_sort | anion exchange membranes enhancement by addition of unfunctionalized triptycene poly ether sulfone s |
| url | http://hdl.handle.net/1721.1/119624 https://orcid.org/0000-0002-6892-8281 |
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