UNS:EFFECT OF METAL OXIDE INTERACTIONS ON OXYGEN EVOLUTION REACTION FOR WATER ELECTROLYSIS

UNS：金属氧化物相互作用对水​​电解析氧反应的影响

• 批准号: 1511390
• 负责人: Prashant Kumta
• 金额: $ 38.07万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-15 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1511390&HistoricalAwards=false
• 关键词: UNS; EFFECT; METAL; OXIDE; INTERACTIONS

Previous work by the principal investigator (PI) has identified a promising catalyst formulation for the production of hydrogen via the oxygen evolution reaction (OER) in highly-acidic electrocatalytic environments. The catalyst partially substitutes lower-cost tin (Sn) for the expensive noble metals iridium (Ir) and ruthenium (Ru). The goal of the present study is to further understand the reasons for the high performance and stability of the the Sn-containing catalysts as a guide for developing even better catalysts. The proposed work will contribute to improved, lower cost, electrocatalysts for a variety of energy applications and will develop creative educational tools for high school students in addition to undergraduate and graduate opportunities for underrepresented minorities.The present proposal expands the PI's previous work with fluorine-doped mixed oxide SnIr catalysts to gain fundamental understanding of the reasons for their high performance with reduced noble metal loading. Both theoretical and experimental approaches will be employed focusing on a range of SnIr catalysts with varying Sn-to-Ir ratio, and with various levels of F-doping. By combining surface and bulk experimental probes with Density Functional Theory (VASP code)computational methods, they will obtain fundamental understanding of both the geometric and electronic structures responsible for the stability and performance attributes of the F-doped mixed oxide catalysts.The proposed work has the potential to broadly impact our understanding of water electrolysis as promoted by catalysts containing reduced amounts of expensive precious metals compared to current catalyst technology, thereby aiding progress in areas related to fuel cells, hydrogen production, and overall energy sustainability. The research will also provide education and training opportunities for undergraduate and graduate students, including recruiting minority students from North Carolina Agriculture and Technical State University. In addition, the PI will undertake an ambitious program to engage high school students in the challenges and opportunities around water hydrolysis including audio-visual animation and hands-on demonstrations.

首席研究者（PI）的先前工作已经确定了通过高酸性电催化环境中的氧气进化反应（OER）生产氢的有希望的催化剂制剂。该催化剂部分代替了昂贵的贵族金属鸢尾花（IR）和氟森（RU）的低成本锡（SN）。本研究的目的是进一步了解含SN催化剂的高性能和稳定性的原因，以此作为开发更好的催化剂的指南。 拟议的工作将有助于改善，较低的成本，电催化剂，用于各种能源应用，并将为高中生开发创造性的教育工具，除了本科生和研究生的机会不足的少数群体的机会外，当前的提议扩大了PI的工作，以氟化混合氧化毒催化剂的质量为基本的高度构成高等的质量，以提高荧光型混合氧化型氧化杀伤力催化剂。理论方法和实验方法都将用于关注具有不同SN与IR比的一系列SNIR催化剂，并且具有不同级别的F兴奋剂。 通过将表面和批量实验探针与密度功能理论（VASP代码）计算方法相结合，他们将获得对负责F型混合氧化物催化剂的稳定性和性能属性的几何和电子结构的基本理解。所提出的拟议的工作具有广泛影响我们对库存量相比，促进型号的技术的潜力，可以广泛地影响我们的技术，以促进型号的催化量，从而促进型号的催化量相比，在与燃料电池，氢生产和整体能源可持续性有关的领域。 这项研究还将为本科和研究生提供教育和培训机会，包括招募来自北卡罗来纳州农业和技术州立大学的少数民族学生。 此外，PI将开展一项雄心勃勃的计划，使高中生围绕水解的挑战和机遇，包括视听动画和动手演示。