Interconnect
AssigneeCeres Intellectual Property Company Limited
InventorsRobert Leah, Ahmet Selcuk
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Abstract
An interconnect for a low temperature solid oxide fuel cell, the interconnect comprising: a stainless steel substrate comprising a first surface and a second surface; a layer comprising chromium oxide on the first surface of the substrate, wherein the chromium oxide layer has a thickness in the range of 350-600 nm; and a metal oxide coating on the chromium oxide layer. A process for making an interconnect for a low temperature solid oxide fuel cell, the process comprising: coating a first surface of a stainless steel substrate with a metal oxide to form a coated substrate; and heating the coated substrate to a temperature in the range of 800-900° C. to form a layer comprising chromium oxide between the first surface and the metal oxide coating.
Claims17
An interconnect for a low temperature solid oxide fuel cell, the interconnect comprising:
- a stainless steel substrate comprising a first surface and an opposed second surface for use on the an air/oxidant side and a fuel side of the interconnect, respectively;
- a layer comprising chromium oxide on the first surface of the substrate, wherein the chromium oxide layer has a thickness in the range of 350 nm to 600 nm;
- a metal oxide coating on the chromium oxide layer;
- and
- a continuous aluminum oxide layer directly on the second surface of the substrate, there being no intervening layer between the continuous aluminum oxide layer and the second surface.
A process for making an interconnect for a low temperature solid oxide fuel cell, the process comprising:
- coating a first surface of a stainless steel substrate with a metal oxide coating to form a coated substrate;
- heating the coated substrate to a temperature in the range of 800° C. to 920° C. to form a layer comprising a chromium oxide between the first surface and the metal oxide coating;
- and
- resulting in the interconnect for the low temperature solid oxide fuel cell comprising:
- the stainless steel substrate comprising the first surface and an opposed second surface for use on an air/oxidant side and a fuel side of the interconnect, respectively;
- the layer comprising the chromium oxide on the first surface of the substrate, wherein the chromium oxide layer has a thickness in the range of 350 nm to 600 nm;
- the metal oxide coating on the chromium oxide layer;
- and
- a continuous aluminum oxide layer directly on the second surface of the substrate, there being no intervening layer between the continuous aluminum oxide layer and the second surface.
Dependencies are inferred from the claim text.