离子交换膜水电解在10 A ⋅ cm-2 800多小时
Yiwei Zheng1, Wenchao Ma1, Ariana Serban1
1Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland.
Angewandte Chemie (International ed. in English)
|October 4, 2024
概括
离子交换膜水电解器 (AEMWEs) 现在可以在超高电流密度 (10 A/cm2) 上实现稳定的运行. 这一突破显著延长了运营寿命,为更具成本效益的绿色生产铺平了道路.
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
- 可再生能源可再生能源是可再生能源.
背景情况:
- 阳离子交换膜水电解器 (AEMWEs) 为绿色生产提供了一种具有成本效益的途径.
- 目前的AEMWE通常运行在3A/cm2以下,限制效率并增加成本.
- 在更高的电流密度下运行AEMWE是一个尚未探索的成本降低策略.
研究的目的:
- 研究AEMWE在超高电流密度 (10A/cm2) 的运行稳定性.
- 开发和优化AEMWE,使其在10A/cm2的稳定和长时间运行.
- 为了证明超高电流密度操作的可行性,以实现高效的生产.
主要方法:
- 使用基准AEMWE来评估10 A/cm2的性能.
- 使用更导电和更强大的离子交换膜 (AEM) 设计的AEMWE.
- 优化离子体,催化剂和多孔运输层,以提高性能.
主要成果:
- 一个基准的AEMWE在10A/cm2时显示,运行寿命仅为几秒钟.
- 经过优化后的AEMWE实现了稳定的运行寿命,在10 A/cm2时超过800小时.
- 优化的AEMWE在10A/cm2的电池电压为2.3V时工作,与较低电流密度的最先进设备相美.
结论:
- 在适当的材料选择和设计下,超高电流密度 (10 A/cm2) 的运行是AEMWE可以实现的.
- 开发的AEMWE显示了运行寿命的显著改善 (大小的5个数量级) 与基准相比.
- 这一进步凸显了超高电流密度AEMWE在成本效益高的绿色生产方面的潜力.
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