公开(公告)号：US20250164437A1

公开(公告)日：2025-05-22

申请号：US18953581

申请日：2024-11-20

Applicant: NGK INSULATORS, LTD.

Inventor： Rei SAWA ,  Junna TAKAYA ,  Daiki SHOMURA ,  Ryo HASHIKAWA ,  Ayaka SATO ,  Noriko HIRATA

IPC: G01N27/409 ,  G01N27/406 ,  G01N27/407 ,  G01N27/41

Abstract: A sensor element includes: an element body; a conducting section including an inner conducting section and an outer conducting section, the outer conducting section, being electrically continuous with the inner conducting section, wherein the outer conducting section includes a connecting segment connected to a routing part of the inner conducting section, wherein the connecting segment of the outer conducting section has gas permeability, and/or at least a portion of the routing part of the inner conducting section is exposed to an outside of the sensor element, and wherein an outer periphery of the routing part of the inner conducting section has a perimeter that is a sum of a first perimeter of a portion covered by the connecting segment having the gas permeability and a second perimeter of a portion exposed to the outside of the sensor element, the sum being shorter than 1.30 mm.

公开(公告)号：US20250164436A1

公开(公告)日：2025-05-22

申请号：US18953551

申请日：2024-11-20

Applicant: NGK INSULATORS, LTD.

Inventor： Rei SAWA ,  Junna TAKAYA ,  Daiki SHOMURA ,  Ryo HASHIKAWA ,  Ayaka SATO ,  Yuki KAJITA

IPC: G01N27/409 ,  G01N27/406 ,  G01N27/407 ,  G01N27/41

Abstract: A sensor element configured to detect a concentration of a specific gas in a measurement-object gas, the sensor element includes an element body having a front end, a rear end and a peripheral face; an inner electrode disposed inside the element body; and a conducting section including an inner conducting section and an outer conducting section, the outer conducting section including a connector electrode disposed at a part of the peripheral face that is near the rear end, the outer conducting section further including a segment disposed on the peripheral face and/or a segment disposed on the peripheral face and exposed to an outside of the sensor element, the outer conducting section being electrically continuous with the inner conducting section. Letting a porosity be Rp [%] and a thickness be Dc [mm], a covering portion of the outer conducting section that covers the inner conducting section satisfies Rp/Dc≤145%/mm.

公开(公告)号：US20250164438A1

公开(公告)日：2025-05-22

申请号：US18953627

申请日：2024-11-20

Applicant: NGK INSULATORS, LTD.

Inventor： Rei SAWA ,  Junna TAKAYA ,  Daiki SHOMURA ,  Ryo HASHIKAWA ,  Ayaka SATO ,  Ozora KANO

IPC: G01N27/409 ,  G01N27/406 ,  G01N27/407 ,  G01N27/41

Abstract: A sensor element configured to detect a concentration of a specific gas in a measurement-object gas, the sensor element includes an element body having a front end, a rear end and a peripheral face; an inner electrode disposed inside the element body; and a conducting section including an inner conducting section and an outer conducting section, the outer conducting section disposed at the peripheral face and including a connector electrode disposed at a part of the peripheral face that is near the rear end, the outer conducting section being electrically continuous with the inner conducting section. A connection portion in the outer conducting section to the inner conducting section is gas permeable, and a contact area between the connection portion and the solid electrolyte body is 1.10 mm2 or smaller.