Mechanism and Kinetics of Direct Methanol Oxidation on Clean and Modified Platinum Electrocatalysts

清洁和改性铂电催化剂上直接甲醇氧化的机理和动力学

• 批准号: 9876905
• 负责人: Eric Stuve
• 金额: $ 19.5万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-15 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876905&HistoricalAwards=false
• 关键词: Mechanism; Kinetics; Direct; Methanol; Oxidation

Professor Eric Stuve's research deals with the electrocatalytic mechanism of methanol oxidation in direct methanol fuel cells (DMFC). In particular, the objective of this study is to understand the kinetics, reaction intermediates, catalyst modifiers, and poisoning mechanism of noble metal electrodes. The long-term prospect and broader impact is the development of improved electrodes and economically feasible DMFC. The parallel path mechanism of methanol oxidation will be studied in a dual electrochemical cell and in a combined ultrahigh vacuum-electrochemical cell system. The metal surfaces will consist of single crystalline and polycrystalline Pt modified with Ru, Os, and Ir. Characterization of surface structure and chemistry will be performed with Auger, LEED, and thermal desorption of CO. The chemical characterization will also include differential electrochemical mass spectroscopy of volatile reaction products. The project targets the training of undergraduate and graduate fuel cell engineers.

Eric Stuve教授的研究涉及直接甲醇燃料电池(DMFC)中甲醇氧化的电催化机理。特别是，本研究的目的是了解贵金属电极的动力学、反应中间体、催化剂修饰剂和中毒机理。长远的前景和更广泛的影响是开发改进的电极和经济可行的直接甲醇燃料电池。将在双电化学池和超高真空-电化学池组合系统中研究甲醇氧化的平行路径机理。金属表面将由Ru、Os和Ir改性的单晶铂和多晶铂组成。表面结构和化学性质的表征将通过俄歇、LEED和CO的热脱附来执行。化学表征还将包括挥发性反应产物的差示电化学质谱。该项目的目标是培养本科生和研究生燃料电池工程师。