公开(公告)号：US20240055616A1

公开(公告)日：2024-02-15

申请号：US18259304

申请日：2021-12-23

申请人： UNIVERSITY OF YAMANASHI ,  NIHON KAGAKU SANGYO CO., LTD.

发明人： Katsuyoshi KAKINUMA ,  Akihiro IIYAMA ,  Makoto UCHIDA ,  Sumitaka WATANABE ,  Isao AMEMIYA

IPC分类号： H01M4/92 ,  H01M4/90

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.

公开(公告)号：US20240043283A1

公开(公告)日：2024-02-08

申请号：US18265372

申请日：2021-12-15

申请人： NIHON KAGAKU SANGYO CO., LTD. ,  UNIVERSITY OF YAMANASHI

发明人： Chisato ARATA ,  Sumitaka WATANABE ,  Katsuyoshi KAKINUMA

IPC分类号： C01G35/00 ,  H01M4/90

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.

公开(公告)号：US20230006219A1

公开(公告)日：2023-01-05

申请号：US17782964

申请日：2020-12-10

申请人： UNIVERSITY OF YAMANASHI ,  NIHON KAGAKU SANGYO CO., LTD.

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.