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Alkaline fuel cells consisting of imidazolium-based graft-type anion exchange membranes: Optimization of fuel cell conditions to achieve high performance and durability
https://repo.qst.go.jp/records/82638
https://repo.qst.go.jp/records/826380b0a5df4-d0c3-45ba-a1a3-7d01b1d14b9b
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-04-06 | |||||
| タイトル | ||||||
| タイトル | Alkaline fuel cells consisting of imidazolium-based graft-type anion exchange membranes: Optimization of fuel cell conditions to achieve high performance and durability | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Mahmoud Ahmed Mohamed, Ahmed
× Mahmoud Ahmed Mohamed, Ahmed× Kimio, Yoshimura× Yasunari, Maekawa× Mahmoud Ahmed Mohamed, Ahmed× Kimio, Yoshimura× Yasunari, Maekawa |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Water management in alkaline fuel cells through the dew point optimization for a series of imidazolium-based graft-type anion exchange membranes (AEMs) consisting of an ethylene-tetrafuluoroethylene copolymer (ETFE) as a base film having three vinylimidazolium type and a styrylimidazolium type (StIm) anion-conducting units is compared with the standard vinylbenzyltrimethylammonium (BTMA)-based AEM. In the H2/O2 fuel cell tests at 60 °C, by optimizing dew points, the sterically hindered imidazolium containing StIm-based AEMs exhibited the highest power density (710 mW/cm2), which is one of the highest performances of imidazolium-type AEMs to date. Furthermore, it exhibited long-term durability in H2/O2 fuel cell at 60 °C, maintaining 0.52 V (56%) of initial voltage after 670 h of life time test, which is better than that of the standard BTMA-based AEM. The chemical characterization in post-durability characterization revealed that negligible degradation of conducting imidazolium groups in the 2MVIm-, 4VIm-, and StIm-based AEMs was observed. For the first time, the hydration level and DFT-based molecular calculations (LUMO energy) showed an acceptable correlation with the experimental in-situ durability results. | |||||
| 書誌情報 |
Journal of Membrane Science 巻 620, p. 118844, 発行日 2021-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0376-7388 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.memsci.2020.118844 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0376738820314198 | |||||
