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US 2018/0019493 A1Published application
Three dimensional extrusion printed electrochemical devices
AssigneeNorthwestern University
InventorsAdam E. Jakus, Ramille N. Shah, Nicholas R. Geisendorfer, Scott A. Barnett, Zhan Gao
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Abstract
Solid oxide electrochemical devices, methods for making the electrochemical devices, and methods of using the electrochemical devices are provided. The electrochemical devices comprise a plurality of stacked functional layers that are formed by a combination of three-dimensional (3D) extrusion printing and two-dimensional (2D) casting techniques.
Claims13
A method of making a solid oxide electrochemical device, the method comprising:
- casting an ionically conducting electrolyte film comprising an oxide ceramic;
- casting an anode transition film comprising a composite of the oxide ceramic and a first additional ceramic;
- casting a cathode transition film comprising a composite of the oxide ceramic and a second additional ceramic;
- 3D extrusion printing a three-dimensional anode comprising a central portion comprising a plurality of spaced-apart, parallel fibers, the fibers comprising the first additional ceramic, and a peripheral portion forming an annulus around the central portion and comprising a plurality of fibers running directly alongside one another, the fibers in the peripheral portion comprising an insulating ceramic;
- 3D extrusion printing a three-dimensional cathode comprising a central portion comprising a plurality of spaced-apart, parallel fibers, the fibers comprising the second additional ceramic, and a peripheral portion forming an annulus around the central portion and comprising a plurality of fibers running directly alongside one another, the fibers in the peripheral portion comprising an insulating ceramic;
- forming a cell structure comprising, from a first end to a second end, the cathode, the cathode transition film, the electrolyte film, the anode transition film, and the anode;
- bonding together the cathode, the cathode transition film, the electrolyte film, the anode transition film, and the anode to form a green body cell;
- and
- co-sintering the green body cell.
6 more elements
A method of making a solid oxide electrochemical device, the method comprising:
- 3D extrusion printing an ionically conducting electrolyte layer comprising an oxide ceramic;
- 3D extrusion printing a three-dimensional anode comprising a central portion comprising a plurality of spaced-apart, parallel fibers, the fibers comprising an oxide ceramic, and a peripheral portion forming an annulus around the central portion and comprising a plurality of fibers running directly alongside one another, the fibers in the peripheral portion comprising an insulating ceramic;
- 3D extrusion printing a three-dimensional cathode comprising a central portion comprising a plurality of spaced-apart, parallel fibers, the fibers comprising an oxide ceramic, and a peripheral portion forming an annulus around the central portion and comprising a plurality of fibers running directly alongside one another, the fibers in the peripheral portion comprising an insulating ceramic;
- forming a cell structure comprising, from a first end to a second end, the cathode, the electrolyte layer, and the anode;
- bonding the cathode, the electrolyte layer, and the anode together in a green body cell;
- and
- co-sintering the green body cell.
4 more elements
Dependencies are inferred from the claim text.