RII Track-4: In Situ and Surface Sensitive Characterization of Fe-Ni(OH)2 Bimetallic Catalysts

RII Track-4：Fe-Ni(OH)2 双金属催化剂的原位和表面敏感表征

• 批准号: 1738165
• 负责人: Lauren Greenlee
• 金额: $ 26.75万
• 依托单位: University of Arkansas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1738165&HistoricalAwards=false
• 关键词: RII; Track; Situ; Surface; Sensitive

Non-technical DescriptionSeveral important next-generation energy conversion technologies (e.g., fuel cells and batteries) are based on electrochemistry, where a metal-based catalyst is used to promote a desired electrochemical reaction. Today, many of the catalysts used are comprised of precious metals, such as platinum, and there is a need to replace these precious metals with more abundant alternatives, such as nickel. This project aims to address a critical gap in fundamental knowledge of the surface chemistry of iron-doped nickel catalysts that operate in electrochemical environments. This research will advance knowledge of electrochemistry and benefit energy technology development. This project also provides a unique opportunity for the PI and a graduate student to visit a premier research facility at the University of Nevada at Las Vegas to learn new scientific knowledge and establish long-term productive research partnerships.Technical DescriptionNickel-based catalysts have long been thought to be well-understood and highly useful for a wide range of electrochemical applications, but a detailed understanding of bimetallic iron-nickel electrocatalysts is now needed. The overall goal of this fellowship is to establish a long-term collaboration between the University of Arkansas (UA), and its activities in materials synthesis, and the University of Nevada, Las Vegas (UNLV), which is one of the premier soft x-ray spectroscopy sites in the world. The specific research goal of this proposal is to use soft x-ray spectroscopy to conduct a detailed, surface sensitive characterization study of a suite of iron-nickel oxide/hydroxide bimetallic thin film and nanoparticle catalysts. The research objectives are to: (1) perform experiments to evaluate the surface chemistry and electronic structure (including the conduction band, the valence band, and the d-band structure) of synthesized catalysts under ultra-high vacuum (UHV) and as a function of applied potential in an electrochemical environment with soft x-ray spectroscopy techniques; and (2) learn the fundamental physics theory that supports experimental soft x-ray spectroscopy; and (3) develop skills to analyze and evaluate data obtained from soft x-ray experiments. The scientific research of this project is expected to advance fundamental understanding of iron-nickel catalyst surface chemistry, thereby enabling accelerated catalyst development for the entire electrocatalysis field. The long-term relationship developed between UA and UNLV is expected to enhance the research activities, expertise, and education of the PI and the UA scientific community as a whole, thereby creating a more vibrant, scientifically competitive, and economically prosperous State of Arkansas.

非技术描述几种重要的下一代能源转换技术（例如，燃料电池和蓄电池）基于电化学，其中使用金属基催化剂来促进所需的电化学反应。 今天，许多使用的催化剂由贵金属组成，例如铂，并且需要用更丰富的替代品（例如镍）来取代这些贵金属。 该项目旨在解决在电化学环境中运行的铁掺杂镍催化剂的表面化学基础知识的关键空白。 这一研究将促进电化学知识的发展，有利于能源技术的发展。该项目还为PI和一名研究生提供了一个独特的机会，参观位于拉斯维加斯的内华达州大学的一流研究设施，学习新的科学知识，并建立长期的生产性研究伙伴关系。技术说明镍基催化剂长期以来被认为是很好的理解和非常有用的广泛的电化学应用，但是现在需要详细地了解镍铁电催化剂。该奖学金的总体目标是在阿肯色州大学（UA）及其材料合成活动与拉斯维加斯的内华达州大学（UNLV）之间建立长期合作关系，UNLV是世界上首屈一指的软X射线光谱学网站之一。该提案的具体研究目标是使用软X射线光谱法对一套铁镍氧化物/氢氧化物薄膜和纳米颗粒催化剂进行详细的表面敏感表征研究。本研究的主要目的为：（1）进行表面化学及电子结构的实验评估（包括导带、价带和d-带结构）在超高真空（UHV）下和作为电化学环境中的施加电势的函数，使用软X射线光谱技术;以及（2）学习支持实验软X射线光谱学的基本物理理论;以及（3）发展分析和评估从软X射线实验获得的数据的技能。该项目的科学研究有望推进对铁镍催化剂表面化学的基本理解，从而加速整个电催化领域的催化剂开发。UA和UNLV之间的长期合作关系预计将加强PI和UA科学界的研究活动，专业知识和教育，从而创造一个更具活力，科学竞争力和经济繁荣的阿肯色州。