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1.发明申请公开(公告)号：US20160156042A1
公开(公告)日：2016-06-02
申请号：US14901199
申请日：2014-05-28
Applicant: SHOWA DENKO K.K.
Inventor： Kousuke MIYAZAKI , Takuya IMAI
IPC: H01M4/90 , H01M8/1004 , H01M4/92
CPC classification number: H01M4/9083 , H01M4/9041 , H01M4/925 , H01M4/926 , H01M8/1004 , H01M2300/0082 , Y02P70/56
Abstract: An oxygen reduction catalyst includes a composite particle, the composite particle including a carbon structure and particles each including a Group 4 metal element M1, the composite particle containing a Group 4 metal element M1, carbon, nitrogen and oxygen, the particles each including a Group 4 metal element M1 being dispersed in the carbon structure, and the composite particle having a percentage of mass loss (a) and a percentage of mass loss (b), which are represented by specific formulae, of not more than 15% and 25 to 70%, respectively.
Abstract translation: 氧还原催化剂包括复合颗粒，所述复合颗粒包括碳结构和各自包含第4族金属元素M1，包含第4族金属元素M1，碳，氮和氧的复合颗粒的颗粒，每个颗粒包含基团 4金属元素M1分散在碳结构中，并且由具体公式表示的具有质量损失百分比（a）和质量损失百分比（b））的复合颗粒为不大于15％和25至 70％。
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公开(公告)号：US20200147590A1
公开(公告)日：2020-05-14
申请号：US16473422
申请日：2017-12-27
Applicant: SHOWA DENKO K.K.
Inventor： Takuya IMAI , Kazuo FURUYA , Kunchan LEE , Suguru SAKAGUCHI , Yoshishige OKUNO
Abstract: An oxygen reduction catalyst containing as constituent elements cobalt, sulfur, and a transition metal element M being at least one element selected from chromium and molybdenum, the oxygen reduction catalyst being ascertained to have a crystal structure of a cobalt disulfide cubic crystal in powder X-ray diffraction measurement, and having a molar ratio of the transition metal element M to cobalt (M/cobalt) of 5/95 to 15/85. Also disclosed is an electrode having a catalyst layer containing the oxygen reduction catalyst, a membrane electrode assembly including a polymer electrolyte membrane wherein the electrode serves as a cathode and/or an anode, and a fuel cell including the membrane electrode assembly.
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Patent Agency Ranking
公开(公告)号：US20190386321A1
公开(公告)日：2019-12-19
申请号：US16471623
申请日：2017-12-27
Applicant: SHOWA DENKO K.K.
Inventor： Suguru SAKAGUCHI , Yoshishige OKUNO , Takuya IMAI , Kunchan LEE
IPC: H01M4/92 , B01J27/051 , B01J27/043 , H01M8/10
Abstract: The present invention relates to an oxygen reduction catalyst, an electrode, a membrane electrode assembly, and a fuel cell, and the oxygen reduction catalyst is an oxygen reduction catalyst containing substituted CoS2, in which the substituted CoS2 has a cubic crystal structure, the oxygen reduction catalyst contains the substituted CoS2 within 0.83 nm from the surface thereof, and the substituted CoS2 has at least one substitutional atom selected from the group consisting of Cr, Mo, Mn, Tc, Re, Rh, Cu, and Ag in some of Co atom sites.
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公开(公告)号：US20170155157A1
公开(公告)日：2017-06-01
申请号：US15312992
申请日：2014-10-07
Applicant: SHOWA DENKO K.K.
Inventor： Noriyasu TEZUKA , Takuya IMAI , Masayuki YOSHIMURA , Masahiro OHMORI
Abstract: An oxygen reduction catalyst, an ink including the catalyst, a catalyst layer including the catalyst, an electrode having the catalyst layer, a membrane electrode assembly having the catalyst layer, and a fuel cell having the membrane electrode assembly. The oxygen reduction catalyst includes titanium dioxide particles, a carbon material and a catalyst component, wherein a surface of the titanium dioxide particles is covered with zinc oxide, and the titanium dioxide particles and the carbon material each support the catalyst component.
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公开(公告)号：US20230235183A1
公开(公告)日：2023-07-27
申请号：US18011372
申请日：2021-06-21
Applicant: SHOWA DENKO K.K.
Inventor： So MIYAISHI , Masahiro OKUBO , Masayuki YOSHIMURA , Wataru SAKANE , Teppei TANAKA , Saeko NAKAMURA , Takuya IMAI , Tetsuo SAKURAI , Koyuki MESUDA
Abstract: There is provided a corrosion-resistant member in which a corrosion-resistant coating film is less likely to peel off from a base material even when the corrosion-resistant member is subjected to a thermal history. The corrosion-resistant member includes: a base material (10) containing aluminum or an aluminum alloy; and a corrosion-resistant coating film (20) formed on the surface of the base material (10), in which the corrosion-resistant coating film (20) contains aluminum fluoride hydroxide AlF3−x(OH)x in which a space group belongs to R-3c, and x in the chemical formula is 0.05 or more and 1.00 or less.
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公开(公告)号：US20200028182A1
公开(公告)日：2020-01-23
申请号：US16495635
申请日：2018-03-22
Applicant: SHOWA DENKO K.K.
Inventor： Takuya IMAI , Kazuo FURUYA , Kunchan LEE
IPC: H01M4/90 , H01M8/1004
Abstract: Provided are an oxygen reduction catalyst having a high electrode potential under a fuel cell operating environment, an electrode containing the oxygen reduction catalyst, a membrane electrode assembly in which a cathode is the electrode, and a fuel cell including the membrane electrode assembly. The oxygen reduction catalyst used here contains cobalt, sulfur, and oxygen as elements, has a CoS hexagonal structure in powder X-ray diffractometry, and having an S—Co/S—O peak area ratio of 2.1 to 8.9 in an S2p spectrum in X-ray photoelectron spectroscopic analysis.
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公开(公告)号：US20200020966A1
公开(公告)日：2020-01-16
申请号：US16495637
申请日：2018-03-22
Applicant: SHOWA DENKO K.K.
Inventor： Takuya IMAI , Kazuo FURUYA , Kunchan LEE
IPC: H01M8/1004 , H01M4/92 , B01J27/043
Abstract: Provided are an oxygen reduction catalyst having a high electrode potential under a fuel cell operating environment, an electrode containing the oxygen reduction catalyst, a membrane electrode assembly in which a cathode is the electrode, and a fuel cell including the membrane electrode assembly. The oxygen reduction catalyst used here contains cobalt, sulfur, and oxygen as elements, has a CoS2 cubic structure in powder X-ray diffractometry, and having an S—Co/S—O peak area ratio of 6 to 15 in an S2p spectrum in X-ray photoelectron spectroscopic analysis.
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