聚二二二二二) 用于高性能离子交换膜水电解
Wentao Zheng1,2,3, Lanlan He1,3, Tang Tang1,3
1Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China.
Angewandte Chemie (International ed. in English)
|June 8, 2024
概括
具有硫增强键的新离子交换膜通过水电解促进绿色的生产. 这些膜为高效和耐用的性水电解系统提供高导电性和稳定性.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 阳离子交换膜水电解对于绿色的生产至关重要.
- 膜中的高氧化物 (OH-) 导电性对于设备的性能至关重要.
- 现有的膜在导电性和长期稳定性方面面临挑战.
研究的目的:
- 开发具有增强OH-导电性和稳定性的新型离子交换膜.
- 研究硫增强的键网络在离子运输中的作用.
- 为了评估这些膜在性水电解中的性能.
主要方法:
- 合成Z-S-x膜,其中包含二索烯组.
- 膜结构的表征,包括结合和导电通路.
- 通过平面测量OH-导电性和离子导电性.
- 在性条件下测试膜稳定性 (高温下KOH溶液).
- 在流电池中评估性水电解性能 (电流密度,电压,耐用性).
主要成果:
- Z-S-x膜具有硫增强的键网络,形成连续的OH导电高速公路.
- Z-S-20膜呈现出高透平面OH-导电性 (182±28 mS cm−1) 和特殊的稳定性 (2650h在80°C).
- 组无金属性水电解实现了高性能 (7.12 A cm-2 在 2.0 V) 和耐用性 (650 h 在 2 A cm-2).
结论:
- 设计的膜有效地通过相互连接的导体通路促进OH-运输.
- 开发的膜显示了通过离子交换膜水电解来有效和持久地生产绿色的巨大潜力.
- 这项工作为推进下一代电解技术提供了一个有前途的战略.
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