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    • 5. 发明申请
    • COATING PROCESS USING GAS SCREEN
    • 使用气体筛选的涂料工艺
    • WO2015105818A1
    • 2015-07-16
    • PCT/US2015/010394
    • 2015-01-07
    • UNITED TECHNOLOGIES CORPORATION
    • DEPALMA, Joseph A.TRUBELJA, Mladen F.LITTON, David A.NOVIKOV, Dmitri L.BURLATSKY, Sergei F.
    • C23C14/06C23C14/28
    • C23C14/228C23C14/02C23C14/083C23C14/243C23C14/30
    • A method for use in a coating process includes pre-heating a substrate in the presence of a coating material and shielding the substrate during the pre-heating from premature deposition of the coating material by establishing a gas screen between the substrate and the coating material. An apparatus for use in a coating process includes a chamber, a crucible that is configured to hold a coating material in the chamber, an energy source operable to heat the interior of the chamber, a coating envelope situated with respect to the crucible, and at least one gas manifold located near the coating envelope. The at least one gas manifold is configured to provide a gas screen between the coating envelope and the crucible. A second manifold provides gas during a later coating deposition to compress a vapor plume of the coating material and focus the plume on the substrate to increase deposition rate.
    • 用于涂覆方法的方法包括在涂料存在下预热基材,并且在预加热期间屏蔽基材以防止涂料过早沉积,从而在基材和涂料之间建立气体筛网。 一种用于涂覆工艺的设备包括:腔室,构造成将涂层材料保持在腔室中的坩埚,可操作以加热腔室内部的能量源,相对于坩埚定位的涂层壳体,​​以及位于 位于涂层外壳附近的至少一个气体歧管。 至少一个气体歧管被配置成在涂层包封和坩埚之间提供气体筛网。 第二歧管在稍后的涂层沉积期间提供气体以压缩涂层材料的蒸气羽流并将羽流聚焦在基底上以增加沉积速率。
    • 10. 发明公开
    • FUEL CELL ELECTRODE WITH GRADIENT CATALYST STRUCTURE
    • 具有梯度催化剂结构的燃料电池电极
    • EP2805368A1
    • 2014-11-26
    • EP12865893.7
    • 2012-01-20
    • UNITED TECHNOLOGIES CORPORATION
    • PROTSAILO, Lesia V.STOLAR, Laura RoenMARZULLO, Jesse M.GUMMALLA, MallikaBURLATSKY, Sergei F.
    • H01M4/86H01M4/92H01M8/02H01M8/10B01J21/18
    • An example of a stable electrode structure is to use a gradient electrode that employs large platinum particle catalyst in the close proximity to the membrane supported on conventional carbon and small platinum particles in the section of the electrode closer to a GDL supported on a stabilized carbon. Some electrode parameters that contribute to electrode performance stability and reduced change in ECA are platinum-to-carbon ratio, size of platinum particles in various parts of the electrode, use of other stable catalysts instead of large particle size platinum (alloy, etc), depth of each gradient sublayer. Another example of a stable electrode structure is to use a mixture of platinum particle sizes on a carbon support, such as using platinum particles that may be 6 nanometers and 3 nanometers. A conductive support is typically one or more of the carbon blacks.
    • 稳定的电极结构的一个例子是使用梯度电极,该梯度电极在靠近传统碳上负载的膜的情况下采用大铂粒子催化剂,并且在更靠近负载在稳定化碳上的GDL的电极部分中的小铂粒子。 有助于电极性能稳定性和减少ECA变化的一些电极参数是铂 - 碳比率,电极各部分中铂颗粒的尺寸,使用其他稳定催化剂代替大颗粒尺寸的铂(合金等), 每个渐变子图层的深度。 稳定的电极结构的另一个例子是在碳载体上使用铂颗粒尺寸的混合物,例如使用6纳米和3纳米的铂颗粒。 导电载体通常是一种或多种炭黑。