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US 10,852,270 B2Granted
Sensor element and gas sensor
AssigneeNGK Insulators, Ltd.
InventorsTakashi Hino, Mika Murakami, Koichi Masuda, Hironori Sakakibara
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Abstract
A sensor element includes an element body having an elongate rectangular parallelepiped shape and including solid electrolyte layers with oxygen ion conductivity, an outer pump electrode disposed on a first surface of the element body, and a protective layer covering at least a part of the first surface of the element body and including one or more spaces (an upper space) that are present apart from the first surface in a direction perpendicular to the first surface.
Claims16
A sensor element including:
- an element body having an elongate rectangular parallelepiped shape and including solid electrolyte layers with oxygen ion conductivity,
- an outer electrode disposed on a first surface that is one of surfaces of the element body, and
- a porous protective layer covering at least a part of the first surface of the element body and including one or more spaces that are present apart from the first surface such that the one or more spaces are surrounded on all sides thereof by the porous protective layer,
- the one or more spaces being provided in addition to pores of the porous protective layer and each having a volume of 12500 μm3 or more.
1 more element
Dependencies are inferred from the claim text.