公开(公告)号：US20060166073A1

公开(公告)日：2006-07-27

申请号：US10562970

申请日：2004-11-24

申请人： Sozaburo Ohashi

发明人： Sozaburo Ohashi

IPC分类号： H01M4/86 ,  H01M4/96 ,  H01M8/10

CPC分类号： H01M4/8636 ,  H01M4/8605 ,  H01M4/861 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/8896 ,  H01M4/926 ,  H01M8/1004

摘要： In a membrane electrode assembly 1 of a fuel cell, the porosity of a hydrogen electrode-side catalyst layer 11a is made to be lower than that of an air electrode-side catalyst layer 11b. Specifically, the weight ratio of ion-exchange resin to carbon carriers of the hydrogen electrode-side catalyst layer is made to be larger than such ratio of the air electrode-side catalyst layer, the hydrogen electrode-side catalyst layer is allowed to contain an additive having a certain particle diameter or less, or the hydrogen electrode-side catalyst layer is formed by spraying a catalyst ink and the air electrode-side catalyst layer is formed by a transfer method. According to the present invention, the amount of hydrogen that permeates from the hydrogen electrode-side catalyst layer to the air electrode-side catalyst layer via an electrolyte membrane is reduced to suppress a direct hydrogen combustion reaction in the air electrode-side catalyst layer, thereby improving the fuel cell durability.

摘要翻译： 在燃料电池的膜电极组件1中，使氢电极侧催化剂层11a的孔隙率低于空气电极侧催化剂层11b的孔隙率。 具体地说，使氢电极侧催化剂层的离子交换树脂与碳载体的重量比大于空气电极侧催化剂层的比例，允许氢电极侧催化剂层含有 通过喷射催化剂油墨形成氢电极侧催化剂层，通过转印法形成空气电极侧催化剂层，形成一定的粒径以下的添加剂。 根据本发明，通过电解质膜从氢电极侧催化剂层向空气电极侧催化剂层渗透的氢的量减少，以抑制空气电极侧催化剂层中的直接氢燃烧反应， 从而提高燃料电池耐久性。

公开(公告)号：US20100209808A1

公开(公告)日：2010-08-19

申请号：US12668454

申请日：2008-07-18

申请人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Yuichiro Sugiyama ,  Mikihiro Hori

发明人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Yuichiro Sugiyama ,  Mikihiro Hori

IPC分类号： H01M8/10 ,  B01J35/00

CPC分类号： H01M8/1004 ,  H01M4/8663 ,  H01M4/881 ,  H01M4/8814 ,  H01M4/921 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/04171 ,  H01M8/04305 ,  H01M8/04492 ,  H01M8/04529

摘要： The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 13 on each side of an electrolyte membrane 10, an electrode powder constituting the catalytic layer 13 shall have an amount of adsorbed water vapor in a range of 52 to 70 cm3(STP)/g by a value measured when the water-vapor partial pressure is 0.6, which is determined from the adsorption isotherm of water. The fuel cell having the catalytic layer with the use of the electrode powder having the amount of adsorbed water vapor in this range has the output performance of 0.6 A/cm2 or higher by current density at 0.6 V, in a less humidified condition and a more humidified condition.

摘要翻译： 本发明规定了与燃料电池的性能相关的催化剂层的物性阀，并提供具有物理适当值的催化剂层和燃料电池。 具体地说，在具有在电解质膜10的两侧设置有催化剂层13的膜电极组件的燃料电池中，构成催化剂层13的电极粉末的吸附量为52〜70的范围 厘米3（STP）/克，当水蒸气分压为0.6时测得的值，其由水的吸附等温线确定。 具有使用具有该范围内的吸附水蒸汽量的电极粉末的催化剂层的燃料电池，在较小的加湿条件下，通过0.6V的电流密度具有0.6A / cm 2以上的输出性能， 加湿条件。

公开(公告)号：US20090092888A1

公开(公告)日：2009-04-09

申请号：US12285076

申请日：2008-09-29

申请人： Hiroaki Takahashi ,  Sozaburo Ohashi ,  Tetsuo Kawamura ,  Yousuke Horiuchi ,  Takahiro Nagata ,  Tomoaki Terada ,  Toshiharu Tabata ,  Susumu Enomoto

发明人： Hiroaki Takahashi ,  Sozaburo Ohashi ,  Tetsuo Kawamura ,  Yousuke Horiuchi ,  Takahiro Nagata ,  Tomoaki Terada ,  Toshiharu Tabata ,  Susumu Enomoto

IPC分类号： H01M4/88

CPC分类号： H01M4/96 ,  H01M4/8842 ,  H01M4/8882 ,  H01M4/921 ,  H01M4/926 ,  H01M2008/1095

摘要： To enhance the activation of a catalyst comprising an alloy of platinum and cobalt, thereby providing an electrode catalyst for fuel cell whose battery output and fuel efficiency are high, and thereby providing a production process of the same.An electrode catalyst according to the present invention for fuel cell is an electrode catalyst for fuel cell in which catalytic particles comprising platinum and cobalt are loaded on a conductive support, and is characterized in that a compositional (molar) ratio of said catalytic particles is platinum:cobalt=3:1-5:1: In the range of platinum:cobalt=3:1-5:1, a high battery voltage is obtainable. When the proportion of platinum is less than platinum: cobalt=3:1, the elution of cobalt from out of catalyst increases. On the contrarily, when the proportion of platinum is more than platinum: cobalt=5:1, the catalytic activities become low.

摘要翻译： 为了增强包含铂和钴的合金的催化剂的活化，从而为电池输出和燃料效率高的燃料电池提供电极催化剂，从而提供其生产方法。 根据本发明的用于燃料电池的电极催化剂是用于燃料电池的电极催化剂，其中包含铂和钴的催化颗粒负载在导电载体上，其特征在于所述催化颗粒的组成（摩尔比）为铂 ：钴= 3：1-5：1：在铂：钴= 3：1-5：1的范围内，可获得高电池电压。 当铂的比例小于铂：钴= 3：1时，钴从催化剂中的洗脱增加。 相反，当铂的比例大于铂：钴= 5：1时，催化活性变低。

公开(公告)号：US09865885B2

公开(公告)日：2018-01-09

申请号：US14241238

申请日：2012-05-14

申请人： Yoshihiro Hori ,  Yoshito Endou ,  Sozaburo Ohashi ,  Noriaki Ishihara ,  Masao Okumura

发明人： Yoshihiro Hori ,  Yoshito Endou ,  Sozaburo Ohashi ,  Noriaki Ishihara ,  Masao Okumura

IPC分类号： H01M4/88 ,  H01M4/92 ,  H01M4/86 ,  H01M8/1018

CPC分类号： H01M4/926 ,  H01M4/8668 ,  H01M4/8828 ,  H01M4/925 ,  H01M2008/1095

摘要： A catalyst ink for improving the performance of catalyst electrodes in a fuel cell is produced by the following procedure. A catalyst dispersion is prepared by dispersing catalyst-supported particles as conductive particles with a catalyst supported thereon in a solvent. A gel material having viscoelasticity is prepared by mixing an ionomer with a volatile solvent. A catalyst ink having a desired viscosity is produced by stirring and mixing the catalyst dispersion with the gel material.

公开(公告)号：US20120107724A1

公开(公告)日：2012-05-03

申请号：US13379713

申请日：2010-05-04

申请人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Mikihiro Kataoka ,  Tomoaki Terada ,  Takahiro Nagata ,  Yosuke Horiuchi ,  Akihiro Hori

发明人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Mikihiro Kataoka ,  Tomoaki Terada ,  Takahiro Nagata ,  Yosuke Horiuchi ,  Akihiro Hori

IPC分类号： H01M8/10 ,  B05D5/12 ,  H01M4/92

CPC分类号： H01M4/926 ,  H01M4/8663 ,  H01M4/881 ,  H01M4/8825 ,  H01M4/8842 ,  H01M4/8878 ,  H01M4/921 ,  H01M8/1018 ,  H01M2008/1095 ,  Y02E60/50

摘要： An electrode catalyst for a fuel cell consists principally of a carbon support, and a platinum catalyst or a platinum-alloy catalyst supported on the carbon support. In the electrode catalyst, at least 0.7 mmol of an acid per gram of the electrode catalyst is present on the carbon support.

摘要翻译： 用于燃料电池的电极催化剂主要由碳载体和负载在碳载体上的铂催化剂或铂合金催化剂组成。 在电极催化剂中，在碳载体上存在每克电极催化剂至少0.7mmol酸。

公开(公告)号：US07910512B2

公开(公告)日：2011-03-22

申请号：US12239234

申请日：2008-09-26

申请人： Hiroaki Takahashi ,  Sozaburo Ohashi ,  Tetsuo Kawamura ,  Yousuke Horiuchi ,  Toshiharu Tabata ,  Tomoaki Terada ,  Takahiro Nagata ,  Susumu Enomoto

发明人： Hiroaki Takahashi ,  Sozaburo Ohashi ,  Tetsuo Kawamura ,  Yousuke Horiuchi ,  Toshiharu Tabata ,  Tomoaki Terada ,  Takahiro Nagata ,  Susumu Enomoto

IPC分类号： H01M4/88 ,  B01J21/18 ,  B01J23/00 ,  B01J23/40 ,  B01J23/74 ,  B01J23/42 ,  B01J23/44 ,  C22C38/00 ,  C22C38/16 ,  C22C38/20 ,  C22C38/42 ,  C22C38/18 ,  C22C38/08 ,  C22C38/14 ,  C22C38/12 ,  C22C14/00 ,  C22C27/02 ,  C22C27/06 ,  C22C22/00 ,  C22C19/03 ,  C22C9/00 ,  C22C18/00 ,  C22C5/04 ,  C22C9/04 ,  C22C9/06 ,  C22C9/05 ,  C22C18/02

CPC分类号： H01M4/921 ,  H01M4/8842 ,  H01M4/8882 ,  H01M4/926 ,  H01M4/96 ,  H01M8/12 ,  H01M2008/1095 ,  Y02P70/56

摘要： To provide a production process of an electrode catalyst for fuel cell whose initial voltage is high and whose endurance characteristics, especially, whose voltage drop being caused by high-potential application is less.A production process according to the present invention of an electrode catalyst for fuel cell is characterized in that: it includes: a dispersing step of dispersing a conductive support in a solution; a loading step of dropping a platinum-salt solution, a base-metal-salt solution and an iridium-salt solution to the resulting dispersion liquid, thereby loading respective metallic salts on the conductive support as hydroxides under an alkaline condition; and an alloying step of heating the conductive support with metallic hydroxides loaded in a reducing atmosphere to reduce them, thereby alloying them.

摘要翻译： 提供初始电压高的燃料电池用电极催化剂的制造方法，特别是其高电位施加引起的电压降较小的耐久特性。 根据本发明的用于燃料电池的电极催化剂的制备方法的特征在于：它包括：将导电载体分散在溶液中的分散步骤; 将铂盐溶液，贱金属盐溶液和铱盐溶液滴加到所得分散液中的装载步骤，从而在碱性条件下将各种金属盐作为氢氧化物负载在导电载体上; 以及合金化步骤，用负载在还原气氛中的金属氢氧化物来加热导电载体以减少它们，从而使它们合金化。

公开(公告)号：US20140205932A1

公开(公告)日：2014-07-24

申请号：US14241238

申请日：2012-05-14

申请人： Yoshihiro Hori ,  Yoshito Endou ,  Sozaburo Ohashi ,  Noriaki Ishihara ,  Masao Okumura

发明人： Yoshihiro Hori ,  Yoshito Endou ,  Sozaburo Ohashi ,  Noriaki Ishihara ,  Masao Okumura

IPC分类号： H01M4/92 ,  H01M4/88

CPC分类号： H01M4/926 ,  H01M4/8668 ,  H01M4/8828 ,  H01M4/925 ,  H01M2008/1095

摘要： A catalyst ink for improving the performance of catalyst electrodes in a fuel cell is produced by the following procedure. A catalyst dispersion is prepared by dispersing catalyst-supported particles as conductive particles with a catalyst supported thereon in a solvent. A gel material having viscoelasticity is prepared by mixing an ionomer with a volatile solvent. A catalyst ink having a desired viscosity is produced by stirring and mixing the catalyst dispersion with the gel material.

摘要翻译： 通过以下步骤制造用于改善燃料电池中的催化剂电极的性能的催化剂油墨。 通过将催化剂负载的颗粒作为导电颗粒与其上负载的催化剂分散在溶剂中来制备催化剂分散体。 通过将离聚物与挥发性溶剂混合来制备具有粘弹性的凝胶材料。 通过将催化剂分散体与凝胶材料进行搅拌和混合来制备具有所需粘度的催化剂油墨。

公开(公告)号：US08415073B2

公开(公告)日：2013-04-09

申请号：US12668454

申请日：2008-07-18

申请人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Yuichiro Sugiyama ,  Mikihiro Hori

发明人： Tetsuo Nagami ,  Sozaburo Ohashi ,  Yuichiro Sugiyama ,  Mikihiro Hori

IPC分类号： H01M4/02 ,  B01J35/00

CPC分类号： H01M8/1004 ,  H01M4/8663 ,  H01M4/881 ,  H01M4/8814 ,  H01M4/921 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/04171 ,  H01M8/04305 ,  H01M8/04492 ,  H01M8/04529

摘要： The present invention specifies the physical property valves of a catalytic layer correlating with the performance of a fuel cell, and provides the catalytic layer having the physical proper values and a fuel cell. Specifically, in a fuel cell having a membrane-electrode assembly provided with a catalytic layer 13 on each side of an electrolyte membrane 10, an electrode powder constituting the catalytic layer 13 shall have an amount of adsorbed water vapor in a range of 52 to 70 cm3(STP)/g by a value measured when the water-vapor partial pressure is 0.6, which is determined from the adsorption isotherm of water. The fuel cell having the catalytic layer with the use of the electrode powder having the amount of adsorbed water vapor in this range has the output performance of 0.6 A/cm2 or higher by current density at 0.6 V, in a less humidified condition and a more humidified condition.

摘要翻译： 本发明规定了与燃料电池的性能相关的催化剂层的物性阀，并提供具有物理适当值的催化剂层和燃料电池。 具体地说，在具有在电解质膜10的两侧设置有催化剂层13的膜电极组件的燃料电池中，构成催化剂层13的电极粉末的吸附量为52〜70的范围 厘米3（STP）/克，当水蒸气分压为0.6时测得的值，其由水的吸附等温线确定。 具有使用具有该范围内的吸附水蒸汽量的电极粉末的催化剂层的燃料电池，在较小的加湿条件下，通过0.6V的电流密度具有0.6A / cm 2以上的输出性能， 加湿条件。

公开(公告)号：US20110236791A1

公开(公告)日：2011-09-29

申请号：US13131626

申请日：2009-11-10

申请人： Nami Endoh ,  Sozaburo Ohashi ,  Tetsuo Nagami ,  Toshiharu Tabata ,  Tomohiro Ishida ,  Mikihiro Kataoka

发明人： Nami Endoh ,  Sozaburo Ohashi ,  Tetsuo Nagami ,  Toshiharu Tabata ,  Tomohiro Ishida ,  Mikihiro Kataoka

IPC分类号： H01M8/10

CPC分类号： H01M4/92 ,  H01M4/926 ,  H01M2008/1095

摘要： An object of the present invention is to optimize an anode catalyst layer such that high output performance can be achieved even under low-humidity conditions. In addition, another object of the present invention is to provide a polymer electrolyte fuel cell having such an anode catalyst layer.The following is obtained: an anode catalyst layer for a polymer electrolyte fuel cell, which comprises a carbon support on which a catalyst is carried and a hydrogen ion-conductive polyelectrolyte, and wherein the catalyst is carried by a carbon support for which the hydrophilic characteristic value specified based on a value representing the amount of adsorbed water vapor/the amount of adsorbed nitrogen is 0.02 or less, or the hydrophilic characteristic value for the catalyst-carrying carbon support is 0.30 or less.

摘要翻译： 本发明的目的是优化阳极催化剂层，使得即使在低湿度条件下也能实现高输出性能。 此外，本发明的另一个目的是提供一种具有这种阳极催化剂层的聚合物电解质燃料电池。 获得以下：用于固体高分子型燃料电池的阳极催化剂层，其包含载持催化剂的碳载体和氢离子传导型聚电解质，其中，所述催化剂由碳载体承载，所述碳载体具有亲水性 基于表示吸附水蒸气量/吸附氮量的值的值为0.02以下，催化剂载体碳载体的亲水性特性值为0.30以下。

公开(公告)号：US07592092B2

公开(公告)日：2009-09-22

申请号：US10562970

申请日：2004-11-24

申请人： Sozaburo Ohashi

发明人： Sozaburo Ohashi

IPC分类号： H01M4/90

CPC分类号： H01M4/8636 ,  H01M4/8605 ,  H01M4/861 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/8896 ,  H01M4/926 ,  H01M8/1004

摘要： In a membrane electrode assembly 1 of a fuel cell, the porosity of a hydrogen electrode-side catalyst layer 11a is made to be lower than that of an air electrode-side catalyst layer 11b. Specifically, the weight ratio of ion-exchange resin to carbon carriers of the hydrogen electrode-side catalyst layer is made to be larger than such ratio of the air electrode-side catalyst layer, the hydrogen electrode-side catalyst layer is allowed to contain an additive having a certain particle diameter or less, or the hydrogen electrode-side catalyst layer is formed by spraying a catalyst ink and the air electrode-side catalyst layer is formed by a transfer method. According to the present invention, the amount of hydrogen that permeates from the hydrogen electrode-side catalyst layer to the air electrode-side catalyst layer via an electrolyte membrane is reduced to suppress a direct hydrogen combustion reaction in the air electrode-side catalyst layer, thereby improving the fuel cell durability.

摘要翻译： 在燃料电池的膜电极组件1中，使氢电极侧催化剂层11a的空隙率比空气电极侧催化剂层11b的孔隙率低。 具体地说，使氢电极侧催化剂层的离子交换树脂与碳载体的重量比大于空气电极侧催化剂层的比例，允许氢电极侧催化剂层含有 通过喷射催化剂油墨形成氢电极侧催化剂层，通过转印法形成空气电极侧催化剂层，形成一定的粒径以下的添加剂。 根据本发明，通过电解质膜从氢电极侧催化剂层向空气电极侧催化剂层渗透的氢的量减少，以抑制空气电极侧催化剂层中的直接氢燃烧反应， 从而提高燃料电池耐久性。