为高温燃料电池使用的硫化微孔聚烯结合剂
Shuo Yang1,2, Hui Li1,3, Wenhao Zou1,3
1Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei 230026, China.
JACS Au
|August 30, 2024
概括
一种新的硫聚烯 (SPX) 粘合剂增强了高温燃料电池的性能. 与传统的聚胺醇 (PBI) 结合剂相比,SPX提高了的利用率和功率密度.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 使用酸化聚胺醇 (PBI) 的高温质子交换膜燃料电池 (HT-PEMFC) 受到低功率输出和 (Pt) 利用的影响.
- 这在很大程度上归因于电极结合剂材料的局限性,影响了离子体稳定性和反应物运输.
研究的目的:
- 开发和评估用于HT-PEMFCs的新型电极粘合材料.
- 为了提高Pt利用率和在高温下提高电池的整体性能.
主要方法:
- 一种硫化微孔聚合物的合成,硫化聚丁 (SPX).
- 对SPX的化学稳定性和结构性质的表征.
- 在180°C使用SPX作为电极粘合剂的HT-PEMFC的制造和测试.
主要成果:
- SPX具有出色的化学稳定性和刚性,扭曲的结构.
- SPX粘合剂有效地减少了Pt催化剂上的离子体吸附,并最大限度地减少了酸损失.
- 在催化剂层内,SPX促进了反应剂气体和水的快速运输.
- 使用SPX结合剂的燃料电池在180°C时实现了42.51%的Pt利用率和805mW cm-2的峰值功率密度.
结论:
- 与PBI相比,硫聚烯 (SPX) 是HT-PEMFC的优越电极粘合剂.
- 在高温燃料电池应用中,SPX的独特特性显著提高了催化剂利用率和功率输出.
- 在基于PBI的HT-PEMFC中,SPX为克服性能瓶提供了一个有希望的解决方案.
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