US 11,916,262 B2
Alloy member, cell stack, and cell stack device
Yuta Matsuno, Nagoya (JP); Yuki Tanaka, Nagoya (JP); Toshiyuki Nakamura, Nagoya (JP); and Makoto Ohmori, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Mar. 22, 2023, as Appl. No. 18/187,802.
Application 18/187,802 is a division of application No. 16/728,352, filed on Dec. 27, 2019, granted, now 11,695,126.
Application 16/728,352 is a continuation of application No. PCT/JP2019/034571, filed on Sep. 3, 2019.
Claims priority of application No. 2018-168073 (JP), filed on Sep. 7, 2018; application No. 2018-198664 (JP), filed on Oct. 22, 2018; and application No. 2019-009259 (JP), filed on Jan. 23, 2019.
Prior Publication US 2023/0223558 A1, Jul. 13, 2023
Int. Cl. H01M 8/2485 (2016.01); H01M 8/0208 (2016.01); H01M 8/2483 (2016.01); H01M 8/0217 (2016.01); H01M 8/0228 (2016.01)
CPC H01M 8/0208 (2013.01) [H01M 8/0217 (2013.01); H01M 8/0228 (2013.01); H01M 8/2483 (2016.02); H01M 8/2485 (2013.01); Y02E 60/50 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A cell stack device comprising:
an electrochemical cell; and
an alloy member, wherein
the alloy member is a manifold for supporting a base end portion of 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.