公开(公告)号：US20210339224A1

公开(公告)日：2021-11-04

申请号：US17286785

申请日：2019-10-16

Applicant: Nihon Kagaku Sangyo Co., Ltd. ,  University of Yamanashi

Inventor： Chisato Arata ,  Hajime Kashima ,  Katsuyoshi Kakinuma ,  Makoto Uchida ,  Akihiro Iiyama

IPC: B01J21/06 ,  B01J23/14 ,  B01J35/10 ,  B01J35/00 ,  B01J37/08 ,  H01M4/90

Abstract: 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.

公开(公告)号：US10471420B2

公开(公告)日：2019-11-12

申请号：US15738270

申请日：2016-06-29

Applicant: University of Yamanashi ,  Takahata Precision Co., Ltd.

Inventor： Kenji Miyatake ,  Makoto Uchida ,  Jyunpei Miyake ,  Takashi Mochizuki ,  Hideaki Ono ,  Manai Shimada ,  Naoki Yokota ,  Natsumi Yoshimura

IPC: B01J39/19 ,  C08G61/10 ,  C08J5/22 ,  H01M8/10 ,  C08G61/02 ,  B01J47/12 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1018 ,  H01M8/1037

Abstract: The present invention provides a cation exchange resin, and a cation exchange membrane and an electrolyte membrane for a fuel cell using the same. The cation exchange resin comprises a divalent hydrophobic unit; and a divalent hydrophilic unit having divalent hydrophilic groups which are repeated via carbon-carbon bond. The divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, a divalent silicon-containing group, a divalent nitrogen-containing group, a divalent phosphorus-containing group, a divalent oxygen-containing group, a divalent sulfur-containing group, or carbon-carbon bond, and at least one of the aromatic rings having a cation exchange group; wherein the hydrophobic unit and the hydrophilic unit are bonded to each other via carbon-carbon bond.

公开(公告)号：US10355285B2

公开(公告)日：2019-07-16

申请号：US15300075

申请日：2015-03-05

Applicant: Mitsui Mining & Smelting Co., Ltd. ,  University of Yamanashi

Inventor： Koji Taniguchi ,  Masahiro Watanabe ,  Makoto Uchida ,  Katsuyoshi Kakinuma

IPC: H01M8/10 ,  H01M4/86 ,  H01M8/1004 ,  H01M4/90 ,  H01M4/92 ,  H01M8/1018

Abstract: 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%.

公开(公告)号：US10333152B2

公开(公告)日：2019-06-25

申请号：US15234688

申请日：2016-08-11

Applicant: UNIVERSITY OF YAMANASHI

Inventor： Makoto Uchida ,  Katsuyoshi Kakinuma ,  Masahiro Watanabe ,  Akihiro Iiyama

IPC: H01M8/04 ,  H01M4/92 ,  H01M8/04223 ,  H01M8/04225

Abstract: A fuel cell system and a method of operating the same is provided that is capable of reducing degradation of a cathode catalyst of a fuel cell. A fuel cell system is provided that includes a fuel cell having a catalyst used for an anode, wherein a carrier of the catalyst is composed of a material with a property where electric resistance in an oxygen containing atmosphere is greater than electric resistance in a hydrogen atmosphere; and a control device configured to control the fuel cell, when supply of fuel gas is stopped during stoppage of operation of the fuel cell, to consume all or part of the fuel gas in a fuel gas chamber, followed by introducing oxygen containing gas into the fuel gas chamber.