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    Method of making electrodes for electrochemical fuel cells
    1.
    发明申请
    Method of making electrodes for electrochemical fuel cells 审中-公开
    电化学燃料电池制作方法

    公开(公告)号：US20060040045A1

    公开(公告)日：2006-02-23

    申请号：US10922112

    申请日：2004-08-18

    申请人： Siegfried Limmer ,  Sabine Ansorge ,  Siyu Ye ,  Paul Beattie ,  Sonia Wong-Cheung ,  Kyoung Bai

    发明人： Siegfried Limmer ,  Sabine Ansorge ,  Siyu Ye ,  Paul Beattie ,  Sonia Wong-Cheung ,  Kyoung Bai

    IPC分类号： B05D5/12

    CPC分类号： H01M4/8828 ,  H01M4/8807 ,  H01M4/8882 ,  H01M4/8892 ,  H01M4/8896

    摘要： In preparing a fluid diffusion electrode, typical methods include applying a catalyst ink to a fluid diffusion layer, drying the catalyst ink and hot-pressing the coated fluid diffusion layer to produce a fluid diffusion electrode. In the present application, unexpected improvements in the smoothness of the resulting electrode have been observed by drying the catalyst ink during compaction. To assist with drying the catalyst layer, the compacting step may be performed at elevated temperatures. In some embodiments, a release sheet may be applied to the catalyst layer prior to compaction. In addition or alternatively, partial drying of the catalyst layer may occur prior to compaction.

    摘要翻译： 在制备流体扩散电极时，典型的方法包括将催化剂油墨施加到流体扩散层，干燥催化剂油墨和热压涂覆的流体扩散层以产生流体扩散电极。 在本申请中，通过在压实过程中干燥催化剂油墨已经观察到所得电极的平滑度的意想不到的改善。 为了帮助干燥催化剂层，压实步骤可以在升高的温度下进行。 在一些实施方案中，可以在压实之前将剥离片施加到催化剂层。 另外或替代地，催化剂层的部分干燥可以在压实之前进行。

    Anode catalyst compositions for a voltage reversal tolerant fuel cell
    2.
    发明申请
    Anode catalyst compositions for a voltage reversal tolerant fuel cell 审中-公开
    用于耐电压逆转燃料电池的阳极催化剂组合物

    公开(公告)号：US20070037042A1

    公开(公告)日：2007-02-15

    申请号：US11504222

    申请日：2006-08-14

    申请人： Siyu Ye ,  Paul Beattie ,  Stephen Campbell ,  David Wilkinson ,  Brian Theobald ,  David Thompsett

    发明人： Siyu Ye ,  Paul Beattie ,  Stephen Campbell ,  David Wilkinson ,  Brian Theobald ,  David Thompsett

    IPC分类号： H01M4/96 ,  H01M4/90 ,  H01M4/92 ,  H01M4/88

    CPC分类号： H01M4/8807 ,  H01M4/8605 ,  H01M4/8835 ,  H01M4/9016 ,  H01M4/9083 ,  H01M4/92 ,  H01M4/921 ,  H01M8/1004

    摘要： In a solid polymer fuel cell series, various circumstances can result in a fuel cell being driven into voltage reversal. For instance, cell voltage reversal can occur if that cell receives an inadequate supply of fuel. In order to pass current, reactions other than fuel oxidation can take place at the fuel cell anode, including water electrolysis and oxidation of anode components. The latter can result in significant degradation of the anode, particularly if the anode employs a carbon black supported catalyst. Such fuel cells can be made substantially more tolerant to cell reversal by using certain anodes employing both a higher catalyst loading or coverage on a corrosion-resistant support and by incorporating, in addition to the typical electrocatalyst for promoting fuel oxidation, certain unsupported catalyst compositions to promote the water electrolysis reaction.

    摘要翻译： 在固体聚合物燃料电池系列中，各种情况可导致燃料电池被驱动进入电压反转。 例如，如果该电池接收到不足的燃料供应，则可能发生电池电压反转。 为了通过电流，燃料氧化以外的反应可以在燃料电池阳极发生，包括水电解和阳极组分的氧化。 后者可导致阳极的显着降解，特别是如果阳极采用负载炭黑的催化剂。 这样的燃料电池可以通过使用在耐腐蚀载体上使用较高催化剂负载量或覆盖率的某些阳极，并且除了用于促进燃料氧化的典型电催化剂之外，还将某些未负载的催化剂组合物掺入到 促进水电解反应。