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.

直接使用低品位水来生产绿色氢消除了目前电解槽所需的水净化技术的使用，从而扩大了绿色氢技术的全球范围。然而，使用低品位水的长期挑战是其中的离子和污染物对催化剂的稳定性、活性和选择性的有害影响。催化剂在这些环境中的不良性能对器件效率和寿命有直接影响。为了设计更灵活和有弹性的水电解系统，我们需要对催化剂材料在恶劣的操作环境中的性能有基本的了解，并利用这些信息来合理地设计新的催化剂。通过本项目，我们将阐明控制低品位水电解催化剂稳定性和活性的关键因素。该项目将涉及（a）催化剂的合成和表征（B）电化学性能的基准测试（c）操作光学和X射线光谱学，以了解催化剂结构和表面中间体如何随着操作的潜力和时间而变化，以及（d）使用材料部现有的一套表面表征工具进行循环后表征，以检测表面特性的变化。