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1.发明公开
公开(公告)号：EP4265569A1
公开(公告)日：2023-10-25
申请号：EP21906654.5
申请日：2021-12-15
摘要： [Object] There is proposed a novel material which is a bead string of tin oxide crystallite or a bead string of complex oxide crystallite of tin oxide and titanium oxide, in which the material contains tantalum and has specific hue as well as a crystallite size on the order of nanometer, and exhibits excellent conductivity and can improve the catalytic activity.
[Solution] A bead string comprising 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 in which when the crystal particle aggregate is pressed under a pressure of 0.1 MPa so as to have a thickness of 1 cm, in the color of the resultant particle aggregate represented by the 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.-
2.发明授权
公开(公告)号：EP3385336B1
公开(公告)日：2020-09-16
申请号：EP16870585.3
申请日：2016-11-28
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3.发明公开
公开(公告)号：EP3385336A1
公开(公告)日：2018-10-10
申请号：EP16870585.3
申请日：2016-11-28
摘要： [Problem] To provide carbon black for 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.
[Solution] 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 cm 3 /g, a specific surface area by BET is 500 to 900 m 2 /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 comprises this carbon black, and a solid polymer fuel cell having the electrode catalyst.
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