Developing catalysts for green hydrogen production from low-grade water electrolysis

开发低品位水电解绿色制氢催化剂

• 批准号: 2897415
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2897415
• 关键词: Developing; catalysts; green; hydrogen; production

The direct use of low-grade water to produce green hydrogen eliminates the use of water purification technologies required forcurrent electrolysers, and thus widens the global reach of green hydrogen technologies. However, the long-standing challengeof using low-grade water is the deleterious effect of ions and contaminants in it on the stability, activity and selectivity ofcatalysts. The poor performance of catalysts in these environments has a direct impact on the device efficiency and lifetime. Inorder to design more flexible and resilient water electrolysis systems, we need to develop a fundamental understanding of howcatalyst materials perform in harsh operating environments and use this information to rationally design new catalysts.Through this project, we will elucidate the key factors controlling stability and activity of catalysts for low-grade waterelectrolysis. The project will involve (a) catalyst synthesis and characterization (b) benchmarking of electrochemicalperformance (c) operando optical and X-ray spectroscopy to understand how the catalyst structure and surface intermediatesevolve with potential and time of operation and (d) post-cycling characterization using a suite of surface characterization toolsavailable at the Department of Materials to detect changes in the surface properties.

直接使用低级水生产绿色氢可以消除使用水纯化技术的使用，因此需要施加电流，从而扩大了绿色氢技术的全球覆盖范围。但是，使用低级水的长期挑战是离子和污染物对催化剂的稳定性，活性和选择性的有害作用。在这些环境中，催化剂的性能差会直接影响设备效率和寿命。为了设计更灵活和弹性的水电系统，我们需要对catalyst材料在严酷的操作环境中执行的方式进行基本了解，并使用此信息合理设计新的催化剂。通过此项目，我们将阐明控制稳定性和活动的关键因素低度水溶液的催化剂。该项目将涉及（a）催化剂合成和表征（b）电化学效果的基准测试（c）操作媒体光学和X射线光谱，以了解催化剂结构和表面中间人如何具有潜在和（d）后循环后表征使用一套表面表征在材料部可用的工具来检测表面特性的变化。