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LSM-YSZ Composite Cathode Inks are excellent for fabricating your own Solid Oxide Fuel Cell (SOFC) with a composite cathode. The composite cathode inks have demonstrated better adhesion to the dense electrolyte surface which can enhance your overall cell performance. This ink is fabricated using a high-quality ink manufacturing processes and provides and a screen printable ink that is excellent for incorporating into your own cell manufacturing process.
• This is a great ink for making cathode catalyst layers for SOFC applications.
• Stirring the ink before use is highly recommended. For best results, the ink should be stirred with a spatula or a glass rod to achieve an even consistency prior to use.
• For making cathode catalyst layers that are well bonded to the electrolyte: The ink applied electrolyte is typically sintered at 100 °C (until it looks dry), then sintered at 800 °C for 1 hr, and then at 1150 °C for 1 hr. If an anode catalyst layer is also going to be applied (which would require a much higher sintering temperature than the this cathode), then it is recommended that the anode catalyst layer to be bonded to the electrolyte first. Exposing this cathode ink to sintering temperatures >1150 °C would cause the densification and low performance and this needs to be avoided.
• For making electrical connections to a screen or wire:This ink is typically fired at 750°C or 850°C for 1 hour to ensure adhesion prior to testing at the desired test temperature.
• This ink can be used for screen printing for generating electrical connections for wire attachments.
Ensuring a solid connection between your electrodes and current collector is critical for obtaining good test results. Leveraging our experience in electrochemical testing, testing we have we offer the following suggestions for obtaining optimum results with our silver paste product.
Cut or punch out the metal mesh to the size/area that you want to test on your sample.
Cut the contact wire to the desired length, with a loop around the perimeter of the mesh with the wire extending past the sample. Place cut mesh in the center of your sample and the looped wire on top of wire mesh.
Apply the contact paste around the perimeter of the wire loop, apply a few drops across the mesh for best adhesion strength.
Cut and place a straight piece of wire next to the mesh on the sample. Again, cover with ink for adhesion. This will allow for 4 point conductivity testing and a lead for measuring voltage, while the other draws the current.
Dry in a 100°C oven for an hour or until the ink looks dry. Repeat all steps on the opposite of the sample in the same area.
Fire your sample to adhere your contact wires. Firing conditions: 1°C per minute to 800°C, hold for 1 hour, cool to room temperature sample in the same area.
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