SBIR Phase II: Electrocatalysts for Direct Methanol Fuel Cells

SBIR 第二阶段：直接甲醇燃料电池的电催化剂

• 批准号: 9801516
• 负责人: In Tae Bae
• 金额: $ 37.79万
• 依托单位: T/J Technologies, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9801516&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Electrocatalysts; Direct

*** 9801516 Wixom This Small Business Innovation Research Phase II project will develop electrocatalysts for use in direct methanol fuel cells (DMFC). The development of less expensive and CO tolerant electrocatalysts is a key challenge for the commercialization of DMFCS. This proposal utilizes multifunctional Pt-Ru-metal oxide/metal carbide (Pt-Ru-MOx/MCy) materials for the oxidation of methanol. This design combines two previous strategies that have proven very successful in improving efficiency and CO tolerance. Highly dispersed bifunctional sites will be produced on hi-h surface area metal carbide support materials. The bifunctional sites and carbide support are inherently active and CO-tolerant. Pt-Ru particles will be dispersed onto the support materials. Composition and microstructure of the support material and Pt-Ru domains will be characterized. Electrocatalysts will be fabricated into electrodes and evaluated for methanol oxidation activity. These electrocatalysts will be 3-5 times more active toward methanol oxidation than carbon supported catalysts. Furthermore, the greater density of support materials will overcome the diffusion limitations encountered with carbon supported catalysts, thus combining the cost benefits of supported catalysts with the superior performance of unsupported catalysts leading to lower cost and higher power density fuel cells. Efficient, low-cost, and poison-tolerant electrocatalysts will significantly advance the feasibility of using DMFCs in Next Generation Vehicles and portable power supply systems. The DMFC offers several advantages over conventional fuel cells based on hydrogen in particular with respect to fuel energy density, delivery, and storage. ***

* 9801516 Wixom 该小型企业创新研究第二阶段项目将开发用于直接甲醇燃料电池（DMFC）的电催化剂。 开发廉价的耐CO电催化剂是DMFCS商业化的关键挑战。 该提议利用多功能Pt-Ru-金属氧化物/金属碳化物（Pt-Ru-MOx/MCy）材料用于甲醇的氧化。 这种设计结合了两种以前的策略，已被证明在提高效率和CO耐受性方面非常成功。 在高氢表面积金属碳化物载体材料上将产生高度分散的双功能位点。 双功能位点和碳化物载体具有固有的活性和CO耐受性。 Pt-Ru颗粒将分散在载体材料上。 载体材料和Pt-Ru域的组成和微观结构将被表征。 将电催化剂制成电极并评价甲醇氧化活性。 这些电催化剂对甲醇氧化的活性比碳载催化剂高3-5倍。 此外，载体材料的更大密度将克服碳负载催化剂遇到的扩散限制，从而将负载催化剂的成本效益与非负载催化剂的上级性能结合起来，导致更低的成本和更高的功率密度的燃料电池。 高效、低成本和耐毒性的电催化剂将大大提高在下一代汽车和便携式电源系统中使用DMFC的可行性。 DMFC提供了优于基于氢的常规燃料电池的几个优点，特别是关于燃料能量密度、输送和存储。 ***