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US 11,695,126 B2Granted
Alloy member, cell stack, and cell stack device
AssigneeNGK Insulators, Ltd.
InventorsYuta Matsuno, Yuki Tanaka, Toshiyuki Nakamura, Makoto Ohmori
Life of this patent
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Abstract
An alloy member includes a base member that includes a recess in a surface of the base member and is constituted by an alloy material containing chromium, an anchor portion is disposed in the recess and contains an oxide containing manganese and a covering layer is connected to the anchor portion and contains a low-equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than that of chromium.
Claims6
A cell stack comprising:
- an electrochemical cell;
- and
- an alloy member, wherein
- the alloy member is a current collector member that is electrically connected to the electrochemical cell and comprises:
- a base member including a plurality of recesses in a surface thereof and constituted by an alloy material containing chromium;
- an anchor portion disposed in each of the recesses and containing an oxide including manganese, each of the anchor portions having an outer surface comprising a first outer surface that is in contact with the recess and a second outer surface that is not in contact with the recess;
- and
- a covering layer connected directly to and completely covering the second outer surface of each anchor portion and containing a low equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than the equilibrium oxygen pressure of chromium,
- the anchor portions have a different composition from the covering layer and the covering layer is formed by applying a ceramic paste material containing the low equilibrium oxygen pressure element onto the surface of the base member and performing a heat treatment.
6 more elements
Dependencies are inferred from the claim text.