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公开(公告)号：US11594737B2
公开(公告)日：2023-02-28
申请号：US16434031
申请日：2019-06-06
IPC分类号： H01M8/10 , H01M4/86 , H01M8/1004 , H01M4/90 , H01M4/92
摘要： A membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.
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公开(公告)号：US10355285B2
公开(公告)日：2019-07-16
申请号：US15300075
申请日：2015-03-05
IPC分类号： H01M8/10 , H01M4/86 , H01M8/1004 , H01M4/90 , H01M4/92 , H01M8/1018
摘要： A membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.
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公开(公告)号：US11752490B2
公开(公告)日：2023-09-12
申请号：US17286785
申请日：2019-10-16
CPC分类号： B01J21/063 , B01J23/14 , B01J35/006 , B01J35/1014 , B01J35/1038 , B01J35/1061 , B01J35/1066 , B01J37/08 , H01M4/9075
摘要： A support powder can improve cell performance under high humidity environment. A support and metal catalyst, including: a support powder; and metal fine particles supported on the support powder; wherein: the support powder is an aggregate of support fine particles; the support fine particles are fine particles of oxide compound and has a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the crystallites have a size of 10 to 30 nm; the support powder has a void; the void includes a secondary pore having a pore diameter of more than 25 nm and 80 nm or less determined by BJH method; and a volume of the secondary pore per unit volume of the support fine particles structuring the support powder is 0.313 cm3/cm3 or more, is provided.
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4.发明授权公开(公告)号：US11563219B2
公开(公告)日：2023-01-24
申请号：US16632657
申请日：2018-07-18
摘要： A carrier powder is thermodynamically stable and conductivity can be easily provided thereto. A carrier powder includes an aggregate of carrier fine particles; wherein: the carrier fine particles include a chained portion structured by fusion bonding a plurality of crystallites into a chain; the carrier fine particles contain titanium oxide; and a ratio of anatase phase/rutile phase of the titanium oxide of the carrier powder is 0.2 or lower.
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公开(公告)号：US10693146B2
公开(公告)日：2020-06-23
申请号：US14787196
申请日：2014-04-16
摘要： Provided is a method for efficiently manufacturing fine metal particles applicable as a fuel cell electrode catalyst. Provided is a method of manufacturing fine metal particles, including the step of: a hydrogen bubbling step to perform bubbling to a reaction solution, wherein: the reaction solution is prepared by allowing seeds of fine metal particles in a dispersed state and a water soluble noble metal precursor to co-exist in a water-containing solvent; and the bubbling is performed with a reaction gas containing a hydrogen gas, is provided.
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公开(公告)号：US11990627B2
公开(公告)日：2024-05-21
申请号：US17967180
申请日：2022-10-17
IPC分类号： H01M4/92 , H01M8/1004
CPC分类号： H01M4/925 , H01M8/1004
摘要： The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ωcm·2 or lower.
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公开(公告)号：US11108070B2
公开(公告)日：2021-08-31
申请号：US16515973
申请日：2019-07-18
发明人： Makoto Uchida , Katsuyoshi Kakinuma
IPC分类号： H01M8/1004 , C23C16/02 , H01M4/88 , H01M4/92
摘要： A method for forming an electrode catalyst layer by putting catalyst ink within an insulative container having a conductive nozzle in communication with the interior of the container and applying an electrospray voltage to the nozzle to cause electrospray of the catalyst ink through the tip end of the nozzle and thereby to form an electrode catalyst layer, the method includes preparing catalyst ink containing a mixture of at least electrode catalyst, polymer electrolyte binder and volatile organic compound and/or water, putting the catalyst ink within the container with a space remaining inside thereof and air-tightly sealing the container, and electrospraying with the space inside of the air-tightly sealed container being conditioned to have a negative pressure of a level at which the catalyst ink cannot drip off from the nozzle.
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公开(公告)号：US11502309B2
公开(公告)日：2022-11-15
申请号：US16774242
申请日：2020-01-28
IPC分类号： H01M4/92 , H01M8/1004
摘要： The carrier metal catalyst achieves suppression of internal resistance of a fuel cell. A carrier metal catalyst includes: a carrier powder; and metal fine particles supported on the carrier powder; wherein: the carrier powder is an aggregates of carrier fine particles; the carrier fine particles includes a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the carrier fine particles include titanium oxide; the carrier fine particles are doped with an element having a valence different from a valence of titanium; the titanium oxide of the carrier powder has an anatase phase/rutile phase ratio of 0.2 or lower; the metal fine particles have a mean particle size of 3 to 10 nm; the metal fine particles include platinum; and a cell resistance measured under standard conditions of a fuel cell prepared using the carrier metal catalyst is 0.090 Ω·cm2 or lower.
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9.发明授权公开(公告)号：US11332623B2
公开(公告)日：2022-05-17
申请号：US15779674
申请日：2016-11-28
摘要： An electrode catalyst support, capable of improving the power of a fuel cell, and an electrode catalyst and a solid polymer fuel cell using the same.
Provided is carbon black wherein pores which are at most 6 nm in pore diameter have a cumulative pore volume of less than 0.25 cm3/g, a specific surface area by BET is 500 to 900 m2/g, and a volatile matter content is 1.0 to 10.0%. Also provided are an electrode catalyst for a fuel cell comprising a support which includes this carbon black, and a solid polymer fuel cell having the electrode catalyst.-
10.发明申请PRODUCTION METHOD FOR FINE METAL PARTICLES, PRODUCTION METHOD FOR FUEL CELL ELECTRODE CATALYST, SUPPORTED FINE METAL PARTICLE CATALYST, AND FUEL CELL ELECTRODE CATALYST 审中-公开精细金属颗粒的生产方法，燃料电池催化剂的生产方法，支持的精细金属颗粒催化剂和燃料电池电极催化剂公开(公告)号：US20160087285A1
公开(公告)日：2016-03-24
申请号：US14787196
申请日：2014-04-16
摘要： Provided is a method for efficiently manufacturing fine metal particles applicable as a fuel cell electrode catalyst. Provided is a method of manufacturing fine metal particles, including the step of: a hydrogen bubbling step to perform bubbling to a reaction solution, wherein: the reaction solution is prepared by allowing seeds of fine metal particles in a dispersed state and a water soluble noble metal precursor to co-exist in a water-containing solvent; and the bubbling is performed with a reaction gas containing a hydrogen gas, is provided.
摘要翻译： 提供一种有效地制造可用作燃料电池电极催化剂的金属微粒的方法。 本发明提供一种金属微粒的制造方法，其特征在于，包括以下步骤：向反应溶液进行鼓泡的氢气鼓泡步骤，其中：通过使分散状态的金属微粒的种子和水溶性贵金属 金属前体共存于含水溶剂中; 并且提供用含有氢气的反应气体进行鼓泡。
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