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公开(公告)号：US20240055616A1
公开(公告)日：2024-02-15
申请号：US18259304
申请日：2021-12-23
CPC分类号： H01M4/925 , H01M4/9075
摘要： The present invention provides a supported metal catalyst that has an electric conductivity acceptable as a catalyst and can suppress the generation of hydrogen peroxide.
According to the present invention, provided is a supported metal catalyst, comprising: 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 have a chained portion structured by a plurality of crystallites being fusion-bonded to form a chain; the support fine particles are structured with a metal oxide; the metal oxide contains cerium; and an electric conductivity of the supported metal catalyst is 10−4 S/cm or higher.-
2.发明公开公开(公告)号：US20240043283A1
公开(公告)日：2024-02-08
申请号：US18265372
申请日：2021-12-15
CPC分类号： C01G35/006 , C01G35/00 , H01M4/9075 , C01P2004/50 , C01P2002/54 , C01P2002/20 , C01P2006/62 , C01P2006/63 , C01P2006/64
摘要： A bead string of tin oxide crystallite or a bead string of complex oxide crystallite of tin oxide and titanium oxide contains tantalum and has specific hue as well as a crystallite size on the order of nanometer, and exhibits excellent conductivity and improves the catalytic activity. A bead string includes a tin oxide crystal particle aggregate or a crystal particle aggregate of a complex oxide of tin oxide and titanium oxide, in which the crystal particle aggregate contains at least one particle having a crystallite size of 5 to 50 nm, and when the crystal particle aggregate is pressed under a pressure of 0.1 MPa to have a thickness of 1 cm, in the color of the resultant particle aggregate represented by Lab color space, a lightness L* value is 80 or less, a chromaticity a* value is −4 or less, and a chromaticity b* is −3 or less.
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公开(公告)号：US20230006219A1
公开(公告)日：2023-01-05
申请号：US17782964
申请日：2020-12-10
发明人： Katsuyoshi KAKINUMA , Makoto UCHIDA , Akihiro IIYAMA , Isao AMEMIYA , Chisato ARATA , Sumitaka WATANABE
IPC分类号： H01M4/92 , C25B11/067
摘要： A support and metal catalyst with improved electric conductivity is provided. 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 have a chained portion structured by a plurality of crystallites being fusion bonded to form a chain; the support fine particles are structured with metal oxide; and the metal oxide is doped with a dopant element, and an atomic ratio of titanium with respect to total of titanium and tin is 0.30 to 0.80, is provided.
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公开(公告)号：US20210339224A1
公开(公告)日：2021-11-04
申请号：US17286785
申请日：2019-10-16
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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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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