Iron atoms coordinated to Nitrogen within Carbon (Fex-N-C) electrocatalysts for Fuel Cells and Electrolysers

用于燃料电池和电解槽的碳内铁原子与氮配位 (Fex-N-C) 电催化剂

• 批准号: 2270518
• 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: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2270518
• 关键词: Iron; atoms; coordinated; Nitrogen; within

Project Aim: Develop sustainable alternatives to existing Platinum group electrocatalysts for Polymer Electrolyte Membrane Fuel Cells/electrolysers, using abundant elements (C, N, Fe) to reduce oxygen and oxidise water.Project Objectives: Synthesise high concentrations of Fex-N-C electrocatalyst sites from various feedstocksReveal catalyst degradation using online electrochemical mass spectrometry, gas chromatography and Inductively coupled plasma atomic emission spectroscopyUnderstand important electrochemical oxidation/reduction reactions by combining electrochemical methods with "In operando" studies such as Extended X-ray Absorption Fine Structure, Mass Spectroscopy and Mossbauer to reveal reaction mechanismsInstallation of optimum electrocatalysts in Fuel Cells followed by stability testing and determination of polarisation curves to compare performanceUnderstand mass transport and diffusion in real devices. X-ray computed tomography and modelling will be used to comprehend how the catalyst morphology, porosity and the triple point interface (between O2, electrolyte and electrocatalyst) affects performance

项目目标：开发可持续的替代品，以现有的铂族电催化剂为聚合物电解质膜燃料电池/电解槽，使用丰富的元素（C、N、Fe）还原氧、氧化水。项目目标：从各种原料合成高浓度的Fex-N-C电催化剂位点使用在线电化学质谱法揭示催化剂降解，气相色谱和电感耦合等离子体原子发射光谱通过将电化学方法与“在操作中”研究（如扩展X-射线衍射）相结合，了解重要的电化学氧化/还原反应。射线吸收精细结构、质谱和穆斯堡尔谱，揭示反应机理在燃料电池中安装最佳电催化剂，然后进行稳定性测试和极化曲线测定，以比较性能了解真实的设备中的传质和扩散。将使用X射线计算机断层扫描和建模来理解催化剂形态、孔隙率和三相点界面（O2、电解质和电催化剂之间）如何影响性能