Invention Grant
- Patent Title: Fuel cell interconnect with reduced voltage degradation and manufacturing method
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Application No.: US16951402Application Date: 2020-11-18
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Publication No.: US11456464B2Publication Date: 2022-09-27
- Inventor: Sanchit Khurana , Tad Armstrong , Harald Herchen , Emily Wong , Cheng-Yu Lin
- Applicant: BLOOM ENERGY CORPORATION
- Applicant Address: US CA San Jose
- Assignee: BLOOM ENERGY CORPORATION
- Current Assignee: BLOOM ENERGY CORPORATION
- Current Assignee Address: US CA San Jose
- Agency: The Marbury Law Group PLLC
- Main IPC: H01M8/0202
- IPC: H01M8/0202 ; H01M8/12 ; H01M4/04 ; H01M8/021 ; H01M8/0223 ; H01M8/0228 ; H01M4/86

Abstract:
A method of making an interconnect for a solid oxide fuel cell stack includes contacting an interconnect powder located in a die cavity with iron, the interconnect powder including a chromium and iron, compressing the interconnect powder to form an interconnect having ribs and fuel channels on a first side of the interconnect, such that the iron is disposed on tips of the ribs; and sintering the interconnect, such that the iron forms an contact layer on the tips of the ribs having a higher iron concentration than a remainder of the interconnect. A glass containing cathode contact layer having a glass transition temperature of 900° C. or less may be located over the rib tips on the oxidant side of the interconnect.
Public/Granted literature
- US20210075027A1 FUEL CELL INTERCONNECT WITH REDUCED VOLTAGE DEGRADATION AND MANUFACTURING METHOD Public/Granted day:2021-03-11
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