Compositionally graded metallic plates for planar solid oxide fuel cells

Patent · Tue Jan 18 04:00:00 EST 2005

OSTI ID:1531492

Krumpelt, Michael; Cruse, Terry Alan; Carter, John David; Routbort, Jules L.; Kumar, Romesh

A method for preparing compositionally graded metallic plates and compositionally graded metallic plates suitable for use as interconnects for solid oxide fuel cells are provided. The method of the invention, utilizing powder metallurgy, enables making metallic plates of generally any desired composition to meet the corrosion requirements of fuel cells and other applications, and enables making metallic plates of graded composition from one surface of the plate to the other. A powder of the desired alloy composition is obtained, then solvents, dispersants, a plasticizer and an organic binder are added to form a slip. The slip is then formed into a layer on a desired substrate that can be flat or textured. Once dried, the layer is removed from the substrate and the binder is burned out. The layer is sintered in a reducing atmosphere at a set temperature for a predefined duration specific to the materials used and the desired final properties.

• Research Organization: Univ. of Chicago, Chicago, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31109-ENG-38
• Assignee: The University of Chicago (Chicago, IL)
• Patent Number(s): 6,843,960
• Application Number: 10/167,832
• OSTI ID: 1531492
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE