US 12,454,764 B2
Electrode catalyst layer for carbon dioxide electrolysis cell, electrolysis cell and carbon dioxide electrolysis apparatus comprising the same
Yusuke Kofuji, Yokohama (JP); Akihiko Ono, Kita (JP); Yuki Kudo, Yokohama (JP); Asahi Motoshige, Ota (JP); Masakazu Yamagiwa, Yokohama (JP); Yoshitsune Sugano, Kawasaki (JP); Satoshi Mikoshiba, Yamato (JP); and Ryota Kitagawa, Setagaya (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Minato-ku (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Minato-ku (JP)
Filed on Sep. 6, 2019, as Appl. No. 16/563,546.
Claims priority of application No. 2019-029466 (JP), filed on Feb. 21, 2019.
Prior Publication US 2020/0270756 A1, Aug. 27, 2020
Int. Cl. C25B 11/051 (2021.01); B01J 21/18 (2006.01); B01J 23/52 (2006.01); C25B 3/23 (2021.01); C25B 3/25 (2021.01); C25B 9/23 (2021.01); C25B 11/031 (2021.01); C25B 11/043 (2021.01); C25B 11/061 (2021.01)
CPC C25B 11/051 (2021.01) [C25B 3/23 (2021.01); C25B 3/25 (2021.01); C25B 9/23 (2021.01); C25B 11/031 (2021.01); C25B 11/043 (2021.01); C25B 11/061 (2021.01); B01J 21/185 (2013.01); B01J 23/52 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electrode suitable for a carbon dioxide electrolysis cell, comprising:
a substrate; and
an electrode catalyst layer comprising (i) carbonaceous catalyst carriers, and (ii) a metallic catalyst loaded on the carbonaceous catalyst carriers,
wherein the metallic catalyst comprises Au, Ag, Cu, Pt, Pd, Ni, Co, Fe, Mn, Ti, Zn, and/or Ga, as a metal,
wherein the catalyst layer comprises primary particles of the carbonaceous catalyst carriers which are aggregated to form secondary particles,
the catalyst layer has a porous structure comprising pores of a diameter less than 5 μm inside and among the primary particles and pores of 5 to 200 μm among the secondary particles, diameters measured by a mercury injection method,
wherein a volume of the pores having a diameter of 5 to 200 μm among the secondary particles per weight of the catalyst layer is in a range of from 3.0 to 10 mL/g, and
wherein the pore-diameter distribution measured by a mercury injection method shows the highest peak of frequency distribution in the diameter range of from greater than 10 μm to less than 50 μm, provided that the diameter and the logarithmic differential pore volume are plotted on the horizontal and vertical axes, respectively.