Surface Crystallization to Optimize Nanostructure of Proton Conductors in Hydrogen Membrane Fuel Cells

表面结晶优化氢膜燃料电池中质子导体的纳米结构

• 批准号: 0856128
• 负责人: Matthew Yates
• 金额: $ 28万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0856128&HistoricalAwards=false
• 关键词: Surface; Crystallization; Optimize; Nanostructure; Proton

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The project objective is to develop proton conducting ceramic membranes with enhanced transport properties for use in hydrogen membrane fuel cells. The proposed synthesis method involves chemically growing ceramic crystals onto palladium substrates covered with nanometer-scale seed crystals. The crystal growth is controlled by additives that strongly adsorb on specific facets of the crystals. Facets of the crystals that are covered with adsorbed additives grow slower than other facets. Therefore, the crystal size and shape can be controlled. A novel muti-step crystal growth process is proposed to create a very thin and dense ceramic membranes in which crystal domains are aligned and oriented to promote proton transport through the membrane.If successful, the project will enable the creation ceramic membranes with improved performance at temperatures lower than required for state of the art ceramic membranes currently used in fuel cells. Lower temperature operation could potentially significantly lower fuel cell cost and increase device lifetime. In addition, by integrating the hydrogen membrane into the fuel cell, the device may operate directly on hydrogen in gas mixtures produced by reforming renewable fuels such as ethanol, rather than solely on pure hydrogen. The novel synthesis approach may be applied to other classes of ion conducting ceramics to improve performance in sensors, gas purification membranes, and fuel cells. Graduate, undergraduate, and high school students will benefit through involvement in the research project and through summer internships. Undergraduate summer interns will be recruited through the University of Rochester Virtual Institute of Energy and the Rochester Eisenberg Fellowship program. High school summer interns will be recruited through the Pittsford school district career internship program.

该奖项根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金。 该项目的目标是开发用于氢膜燃料电池的具有增强传输性能的质子传导陶瓷膜。 所提出的合成方法涉及在覆盖有纳米级晶种的钯基底上化学生长陶瓷晶体。 晶体生长由强烈吸附在晶体特定面上的添加剂控制。 被吸附的添加剂覆盖的晶体的面比其他面生长得慢。 因此，可以控制晶体的尺寸和形状。 提出了一种新颖的多步骤晶体生长工艺，以制造非常薄且致密的陶瓷膜，其中晶域排列和定向，以促进质子通过膜的传输。如果成功，该项目将能够在低于目前燃料电池中使用的最先进陶瓷膜所需的温度下制造出具有改进性能的陶瓷膜。 较低的运行温度可能会显着降低燃料电池成本并延长设备使用寿命。 此外，通过将氢膜集成到燃料电池中，该装置可以直接利用通过重整乙醇等可再生燃料产生的气体混合物中的氢气，而不是仅仅利用纯氢气来运行。 这种新颖的合成方法可应用于其他类别的离子导电陶瓷，以提高传感器、气体净化膜和燃料电池的性能。 研究生、本科生和高中生将通过参与研究项目和暑期实习受益。 本科暑期实习生将通过罗彻斯特大学虚拟能源研究所和罗彻斯特艾森伯格奖学金计划招募。 高中暑期实习生将通过皮茨福德学区职业实习计划招募。