公开(公告)号：US06548202B2

公开(公告)日：2003-04-15

申请号：US09799183

申请日：2001-03-05

申请人： Stephen A. Campbell ,  Jason Edward Chisham ,  David P. Wilkinson

发明人： Stephen A. Campbell ,  Jason Edward Chisham ,  David P. Wilkinson

IPC分类号： H01M496

CPC分类号： H01M4/9083 ,  H01M4/8605 ,  H01M4/8846 ,  H01M4/90 ,  H01M4/926 ,  H01M8/1004 ,  H01M2300/0082

摘要： Carbon-supported catalysts are frequently employed in the electrodes of solid polymer fuel cells in order to make efficient use of the catalyst therein. The catalyst utilization in the electrode and the fuel cell performance can be further improved by introducing acidic surface oxide groups on the carbon-supported catalyst. The introduction of acidic surface oxide groups on the carbon-supported catalyst can be accomplished by treating the carbon-supported catalyst with a suitable acid, such as nitric acid, before incorporating the carbon-supported catalyst in a fuel cell electrode. The present technique is particularly suitable for use in solid polymer fuel cell cathodes.

摘要翻译： 为了有效利用其中的催化剂，常常在固体聚合物燃料电池的电极中使用碳载体催化剂。 通过在碳载体催化剂上引入酸性表面氧化物基，能够进一步提高电极中的催化剂利用率和燃料电池性能。 在碳载体催化剂上引入酸性表面氧化物基团可以通过在将碳载体催化剂加入到燃料电池电极中之前，用合适的酸如硝酸处理碳负载的催化剂来实现。 本技术特别适用于固体聚合物燃料电池阴极。

公开(公告)号：US06451470B1

公开(公告)日：2002-09-17

申请号：US09380536

申请日：2000-01-10

申请人： Arthur Koschany ,  Christian Lucas ,  Thomas Schwesinger

发明人： Arthur Koschany ,  Christian Lucas ,  Thomas Schwesinger

IPC分类号： H01M496

CPC分类号： H01M8/04291 ,  H01M4/8605 ,  H01M8/1004 ,  H01M2300/0082

摘要： Gas diffusion electrodes (1) for polymer electrolyte membrane fuel cells are modified such that the diffusion of water therein is inhibited in comparison with un-modified electrodes. Polymer electrolyte membrane fuel cells with the modified gas diffusion electrodes can be operated, with on the average unchanged operating conditions, without addition of water, since the gas diffusion electrodes do not allow more water to escape than that formed during the reaction of burnable gas and oxidizing agent, and guarantee sufficient membrane moisture.

摘要翻译： 用于聚合物电解质膜燃料电池的气体扩散电极（1）被修饰，使得与未修饰的电极相比，其中的水的扩散被抑制。 具有改性气体扩散电极的聚合物电解质膜燃料电池可以在平均不变的操作条件下操作，而不添加水，因为气体扩散电极不允许比在可燃气体反应期间形成的水多， 氧化剂，并保证充分的膜水分。

公开(公告)号：US06342319B1

公开(公告)日：2002-01-29

申请号：US09038975

申请日：1998-03-12

申请人： Takashi Kuboki ,  Norio Takami ,  Takahisa Ohsaki

发明人： Takashi Kuboki ,  Norio Takami ,  Takahisa Ohsaki

IPC分类号： H01M496

CPC分类号： H01M4/583 ,  C01B32/05 ,  C01B32/20 ,  C01P2004/20 ,  C01P2006/16 ,  C01P2006/80 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/0525 ,  H01M2004/021

摘要： This invention provides a nonaqueous electrolyte secondary battery including a negative electrode containing a carbonaceous material aggregate having a structure in which carbonaceous material plates are three-dimensionally distributed, the carbonaceous material plates being capable of absorbing and desorbing lithium ions and having a molar ratio of hydrogen to carbon of 0.2 to 0.4.

摘要翻译： 本发明提供一种非水电解质二次电池，其包含含有碳质材料集合体的负极，所述碳质材料集合体具有碳质材料板三维分布的结构，所述碳质材料板能够吸收和解吸锂离子并具有氢的摩尔比 至0.2〜0.4的碳。