Oxide-coated cathode and method for making same
AssigneeThomson Licensing S. A.
InventorJean-Luc Ricaud
Life of this patent
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Abstract
The oxide cathode (2) comprises a support (1) and an oxide layer (3) on the latter. It furthermore includes particles (8) of a conducting material having a first end (8a) incorporated in the support (1) and a second end (8b) lodged in the oxide layer (3), so as to constitute conducting bridges passing through an interface layer (6) forming between the support (1) and the oxide layer (3). The invention also relates to a process for manufacturing such a cathode. The conducting particles (8) make it possible to improve the electrical conductivity of the cathode, both within the oxide layer (3) and within the interface layer (6).
Claims19
Oxide cathode (2) comprising a support (1) and an oxide layer (3) on the support, characterized in that it furthermore includes particles (8) of a conducting material having a first end (8a) incorporated in the support (1) and a second end (8b) lodged in the oxide layer (3), so as to constitute conducting bridges passing through an interface layer (6) forming between the support (1) and the oxide layer (3).
Process for manufacturing an oxide cathode (2), in which an oxide layer (3) is deposited on a support (1), characterized in that it comprises the steps consisting in:
- furnishing that surface (la) of the support (1) which is intended to receive the oxide layer (3) with particles (8) of conducting material so that the particles have a first end (8a) incorporated in the support (1) and a second end (8b) which is exposed;
- and
- covering said surface (1a) with an oxide layer (3).
Dependencies are inferred from the claim text.