Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications
Imidazoline is a five-membered heterocycle derived by the partial reduction of one double bond of the imidazole ring. This work prepared new anion exchange membranes (AEMs) based on imidazoline quaternized polystyrene copolymers bearing N-b-hydroxyethyl oleyl imidazolinium pendent groups to evaluate...
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MDPI AG
2021
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oai:doaj.org-article:4f7c7122f3ab4dc6972ca6a889ed95c22021-11-25T18:20:17ZAnion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications10.3390/membranes111109012077-0375https://doaj.org/article/4f7c7122f3ab4dc6972ca6a889ed95c22021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/901https://doaj.org/toc/2077-0375Imidazoline is a five-membered heterocycle derived by the partial reduction of one double bond of the imidazole ring. This work prepared new anion exchange membranes (AEMs) based on imidazoline quaternized polystyrene copolymers bearing N-b-hydroxyethyl oleyl imidazolinium pendent groups to evaluate the application potential for anion exchange membrane fuel cells (AEMFCs). For comparison, an imidazole quaternized polystyrene copolymer was also synthesized. The polymer chemical structure was confirmed by FTIR, NMR, and TGA. In addition, the essential properties of membranes, including ion exchange capacity (IEC), water uptake, and hydroxide conductivity, were measured. The alkaline stabilities of imidazolium-based and imidazolinium-based AEMs were compared by means of the changes in the TGA thermograms, FTIR spectra, and hydroxide conductivity during the alkaline treatment in 1 M KOH at 60 °C for 144 h. The results showed that the imidazolinium-based AEMs exhibited relatively lower hydroxide conductivity (5.77 mS/cm at 70 °C) but much better alkaline stability compared with the imidazolium-based AEM. The imidazolinium-based AEM (PSVBImn-50) retained 92% of its hydroxide conductivity after the alkaline treatment. Besides, the fuel cell performance of the imidazolium-based and imidazolinium-based AEMs was examined by single-cell tests.Li-Cheng JhengChung-Yen HsuHong-Yi YehMDPI AGarticleimidazolinepolystyreneanion exchange membranesfuel cellsChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 901, p 901 (2021) |
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DOAJ |
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DOAJ |
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EN |
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imidazoline polystyrene anion exchange membranes fuel cells Chemical technology TP1-1185 Chemical engineering TP155-156 |
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imidazoline polystyrene anion exchange membranes fuel cells Chemical technology TP1-1185 Chemical engineering TP155-156 Li-Cheng Jheng Chung-Yen Hsu Hong-Yi Yeh Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| description |
Imidazoline is a five-membered heterocycle derived by the partial reduction of one double bond of the imidazole ring. This work prepared new anion exchange membranes (AEMs) based on imidazoline quaternized polystyrene copolymers bearing N-b-hydroxyethyl oleyl imidazolinium pendent groups to evaluate the application potential for anion exchange membrane fuel cells (AEMFCs). For comparison, an imidazole quaternized polystyrene copolymer was also synthesized. The polymer chemical structure was confirmed by FTIR, NMR, and TGA. In addition, the essential properties of membranes, including ion exchange capacity (IEC), water uptake, and hydroxide conductivity, were measured. The alkaline stabilities of imidazolium-based and imidazolinium-based AEMs were compared by means of the changes in the TGA thermograms, FTIR spectra, and hydroxide conductivity during the alkaline treatment in 1 M KOH at 60 °C for 144 h. The results showed that the imidazolinium-based AEMs exhibited relatively lower hydroxide conductivity (5.77 mS/cm at 70 °C) but much better alkaline stability compared with the imidazolium-based AEM. The imidazolinium-based AEM (PSVBImn-50) retained 92% of its hydroxide conductivity after the alkaline treatment. Besides, the fuel cell performance of the imidazolium-based and imidazolinium-based AEMs was examined by single-cell tests. |
| format |
article |
| author |
Li-Cheng Jheng Chung-Yen Hsu Hong-Yi Yeh |
| author_facet |
Li-Cheng Jheng Chung-Yen Hsu Hong-Yi Yeh |
| author_sort |
Li-Cheng Jheng |
| title |
Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| title_short |
Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| title_full |
Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| title_fullStr |
Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| title_full_unstemmed |
Anion Exchange Membranes Based on Imidazoline Quaternized Polystyrene Copolymers for Fuel Cell Applications |
| title_sort |
anion exchange membranes based on imidazoline quaternized polystyrene copolymers for fuel cell applications |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/4f7c7122f3ab4dc6972ca6a889ed95c2 |
| work_keys_str_mv |
AT lichengjheng anionexchangemembranesbasedonimidazolinequaternizedpolystyrenecopolymersforfuelcellapplications AT chungyenhsu anionexchangemembranesbasedonimidazolinequaternizedpolystyrenecopolymersforfuelcellapplications AT hongyiyeh anionexchangemembranesbasedonimidazolinequaternizedpolystyrenecopolymersforfuelcellapplications |
| _version_ |
1718411318515466240 |