SBIR Phase I: Commercially Viable Deposition of Catalytic Films Onto Proton Conducting Membranes

SBIR 第一阶段：将催化薄膜沉积到质子传导膜上具有商业可行性

• 批准号: 9661724
• 负责人: Andrew Hunt
• 金额: $ 7.5万
• 依托单位: NGIMAT CO.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9661724&HistoricalAwards=false
• 关键词: SBIR; Phase; Commercially; Viable; Deposition

*** ABSTRACT 9661724 Hornis This Small Business Innovation Research Phase I project will further develop a technique to coat proton conduction membranes with catalysts via an open atmosphere Combustion Chemical Vapor Deposition (CCVD) technology. Low temperature, high efficiency H2/02 and H2/Air based fuel cells are constructed using a variety of commercially available polymeric proton conduction membranes that are coated with a catalyst to activate the anodic/cathodic ionization reactions. Currently, platinum catalytic films are deposited by thick film technology or dip-coating resulting in high material expenses and/or yielding a mechanically fragile coating with low bonding strength. As an initial proof-of-concept for this proposal and for DuPont, MicroCoatings Technologies (MCT) deposited an adherent platinum thin film onto NAFION( in the open atmosphere. Platinum thin films deposited by the open atmosphere CCVD technology generally show properties similar or superior to those obtained by vacuum based CVD processes. Desirable adherent nanophase grains with radii of 10A to 100A can be deposited. XRD and SEM analysis indicated that the resulting film was amorphous with good adhesion to the substrate. The polymer foil is simply moved through the chamberless deposition zone, which allows large sheets or roll stock to be coated quickly. Since the CCVD technique uses solution based precursors, vapor pressures do not play a crucial role in selecting the precursor, and thus precursors generally are 30% to 95% less expensive than those needed for traditional CVD. During Phase I, platinum is going to be evaluated for adhesion strength with the membrane and their microstructure with deposition variation. Lowering the manufacturing cost of proton conducting membranes is a critical factor in furthering the commercialization of proton exchange membrane (PEM) fuel cells for transportation and stationary applications. In addition to fuel cell applications, the market for the membrane coating tech nique developed under this research includes chemical production and fluid processing. ***

*** 摘要 9661724 Hornis 这个小型企业创新研究第一阶段项目将进一步开发一种通过开放大气燃烧化学气相沉积 (CCVD) 技术在质子传导膜上涂覆催化剂的技术。低温、高效的H2/O2和H2/空气基燃料电池是使用各种市售聚合物质子传导膜构建的，这些聚合物质子传导膜涂有催化剂以激活阳极/阴极电离反应。目前，铂催化膜通过厚膜技术或浸涂沉积，导致材料费用高和/或产生具有低结合强度的机械脆弱涂层。作为该提案和杜邦公司的初步概念验证，MicroCoatings Technologies (MCT) 在开放大气中的 NAFION( 上沉积了粘附性铂薄膜。通过开放大气 CCVD 技术沉积的铂薄膜通常表现出与基于真空的 CVD 工艺获得的类似或更好的特性。可以沉积半径为 10A 至 100A 的理想粘附纳米相颗粒。 XRD和SEM分析表明所得薄膜为非晶态，对基材具有良好的附着力。聚合物箔只需移动通过无室沉积区，即可快速涂覆大片材或卷材。由于CCVD技术使用基于溶液的前驱体，蒸气压在选择前驱体时不起关键作用，因此前驱体通常比传统技术所需的前驱体便宜30%至95% 化学气相沉积。在第一阶段，将评估铂与膜的粘附强度及其随沉积变化的微观结构。 降低质子传导膜的制造成本是促进运输和固定应用质子交换膜（PEM）燃料电池商业化的关键因素。除燃料电池应用外，本研究开发的膜涂层技术的市场还包括化学品生产和流体 加工。 ***