聚烯 (烯) 基烯 (烯) 与醇吊用于性离子溶解聚合物电解质
Yifan Xia1, Sinu C Rajappan1, Si Chen2
1Department of Energy Conversion and Storage, Technical University of Denmark, Elektrovej, Building 375, Lyngby, 2800, Denmark.
ChemSusChem
|August 8, 2024
概括
新的四醇功能化膜作为性水电解的高效电极分离器. 这些先进的膜实现了高性能,为增强气生产提供了改进的气体屏障特性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 聚合物化学 聚合物化学
背景情况:
- 性水电解需要强大而高效的电极分离器.
- 像Zirfon这样的现有分离器在厚度和气体屏障特性方面存在局限性.
- 新型离子溶解膜的开发对于推进电解技术至关重要.
研究的目的:
- 准备和表征新的四醇功能化聚烯基烯膜.
- 为了评估这些膜作为性水电解中的电极分离器.
- 评估它们的离子导电性,机械性能和在电解电池中的性能.
主要方法:
- 通过超酸催化聚酸基化合成一种基本的聚 ((烯基) 聚合物.
- 聚合物的功能化与四醇吊.
- 膜性质的表征,包括各种KOH度的离子导电性.
- 在使用未催化Ni-泡电极的性电解细胞试验中进行评估.
主要成果:
- 四醇功能化膜的峰值离子导电率为19 mS/cm在5重%的KOH中.
- 导电性在30重%KOH中略有下降至13mS/cm,表明稳定性良好.
- 在30重%KOH的电解试验中,在<2.6V时达到高达1000mA/cm2的电流密度.
- 与较厚的Zirfon分离器相比,膜显示出优越的气体屏障特性.
结论:
- 醇功能化的聚烯基烯膜是性水电解的有效电极分离器.
- 这些膜为传统分离器提供了有希望的替代品,可实现高电流密度和更高的安全性.
- 进一步优化可能会导致生产效率更高.
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