| 摘要 |
An interconnect for a low temperature solid oxide fuel cell comprises a stainless steel substrate 5 comprising a first surface and a second surface; a layer 15 comprising chromium oxide on the first surface of the substrate, wherein the chromium oxide layer is of thickness in the range 350 600 nm; and a metal oxide coating 10 on the chromium oxide layer. A process for making an interconnect for a low temperature solid oxide fuel cell is also disclosed, the process comprising coating a first surface of a stainless steel substrate 5 with a metal oxide 10 to form a coated substrate; and heating the coated substrate to a temperature in the range 800 - 900°C to form a layer 15 comprising chromium oxide between the first surface and the metal oxide coating. An aluminium layer is preferably provided on the second surface of the substrate 5, and the metal oxide coating is preferably cobalt oxide, manganese cobalt oxide, copper oxide, or combinations thereof. The stainless steel is preferably a ferritic stainless steel. This arrangement is stated to reduce the effects of chromium poisoning of the fuel cell. |
