高活性NiRu/C阴极催化剂通过离子交换膜水电解的位移反应合成
Stephan Ruck1,2, Andreas Hutzler1, Simon Thiele1,2
1Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IET-2), Forschungszentrum Jülich GmbH, Cauerstr. 1, 91058, Erlangen, Germany.
Small methods
|November 13, 2024
概括
开发了一种基于的新型催化剂,显著提高了交换膜水电解 (AEMWE) 的性介质中的演化反应 (HER) 活性,为金提供了具有成本效益的替代品.
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
- 催化剂是一种催化剂.
背景情况:
- 阳离子交换膜水电解 (AEMWE) 提供了具有成本效益的绿色生产.
- 目前的AEMWE技术依赖于昂贵的 (Pt) 在性条件下在阴极进行缓慢的演化反应 (HER).
- 为 HER 开发非贵金属替代品至关重要.
研究的目的:
- 合成和评估一种基于 (Ru) 的新型催化剂,作为基介质中HER的Pt替代品.
- 为了证明催化剂在半细胞和单细胞电解中的高活性和效率.
主要方法:
- 一个两步合成,涉及分散 (Ni) 催化剂在碳支上.
- 在Ni催化剂表面通过电磁位移沉积Ru,以实现均分布.
- 在半细胞和单细胞AEMWE配置中测试催化剂的性能.
主要成果:
- 合成的基于Ru的催化剂在性介质中对HER表现出高活性.
- 催化剂在半细胞和单细胞试验中表现出高于最先进的Pt/C催化剂的性能.
- 使用这种催化剂的单个电池以低贵金属负载 (0.05 mg cm-2) 在1 A cm-2下达到1.73 V.
结论:
- 开发的基于Ru的催化剂是AEMWE中Pt为HER的高效和潜在的节省成本的替代品.
- 合成方法确保了均的Ru分布,从而提高了催化性能.
- 这一进步为通过AEMWE实现更经济的绿色生产铺平了道路.
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