Fuel cell interconnect with reduced voltage degradation and manufacturing method
US-2018248202-A1 · Aug 30, 2018 · US
Wet sprayed coatings for interconnects for soec and sofc
US2022231308A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022231308-A1 |
| Application number | US-202217579416-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 19, 2022 |
| Priority date | Jan 21, 2021 |
| Publication date | Jul 21, 2022 |
| Grant date | — |
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- Title
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Abstract
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Systems, devices, and methods that utilize a method of coating an interconnect for a SOEC or SOFC, the method including wet spraying a coating precursor powder onto an interconnect, and sintering the interconnect in an oxidizing ambient to form the coating.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of coating an interconnect for a solid oxide electrolyzer cells (SOECs) or solid oxide fuel cells (SOFCs), the method comprising: wet spraying a coating precursor powder onto an interconnect; and sintering the interconnect in an oxidizing ambient to form the coating. 2 . The method according to claim 1 , wherein the precursor powder comprises a spinel precursor powder comprising at least two metals selected from Cu, Mn, Co, Fe and/or Ni. 3 . The method according to claim 2 , wherein the coating comprises an oxide of at least two metals selected from Cu, Mn, Co, Fe and/or Ni. 4 . The method according to claim 3 , wherein the sintering occurs in-situ in a stack of SOECs or SOFCs. 5 . The method according to claim 1 , wherein the interconnect comprises a chromium-iron alloy containing a spinel coating containing an oxide of at least one of Cu, Fe or Ni. 6 . The method according to claim 5 , wherein the coating further comprises at least one of Mn or Co. 7 . The method according to claim 1 , wherein the coating has a semi-dense coating without connected open porosity. 8 . The method according to claim 1 , wherein the coating has a dense coating with closed porosity. 9 . The method according to claim 1 , wherein the oxidizing ambient is air. 10 . The method according to claim 1 , wherein the sintering occurs in-situ in the SOFC or SOEC stack. 11 . The method according to claim 1 , wherein the wet spraying the coating to the interconnect is applied after the interconnect is sintered and without oxidizing, the interconnect subsequently being sintered, the oxidizing ambient being air. 12 . The method according to claim 11 , wherein the sintering occurs in-situ in the SOFC or SOEC stack. 13 . The method according to claim 1 , wherein the wet spraying the coating to the interconnect is applied after the interconnect is sintered and without grit blasting, the interconnect subsequently being sintered, the oxidizing ambient being air. 14 . The method according to claim 1 , wherein the interconnect and the coating are sintered at the same time either as a component or in-situ in the SOFC or SOEC stack. 15 . A method of coating an interconnect for a solid oxide electrolyzer cells (SOECs) or solid oxide fuel cells (SOFCs), the method comprising: adding a metal powder to a manganese cobalt oxide to form a coating material; wet spraying the coating material onto an interconnect; and sintering the interconnect in an oxidizing ambient to form the coating. 16 . The method according to claim 15 , where the metal powder that is added is one of Fe, Mn, Ni, Co, or Cu. 17 . The method according to claim 16 , where the metal powder that is added is a sintering aid. 18 . The method according to claim 16 , wherein the coating has a semi-dense coating without connected open porosity. 19 . The method according to claim 16 , wherein the coating has a dense coating with closed porosity. 20 . The method according to claim 16 , wherein the oxidizing ambient is air.
Assignees
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Classifications
performed by spraying · CPC title
After-treatment · CPC title
to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title
Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells (for the production of aluminium C25C3/06 - C25C3/22) · CPC title
Details of groupings of fuel cells · CPC title
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Frequently asked questions
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- What does patent US2022231308A1 cover?
- Systems, devices, and methods that utilize a method of coating an interconnect for a SOEC or SOFC, the method including wet spraying a coating precursor powder onto an interconnect, and sintering the interconnect in an oxidizing ambient to form the coating.
- Who is the assignee on this patent?
- Bloom Energy Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0297. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 21 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).