Method of preparation and application for glass ceramic sealing thin strips

A method for manufacturing a glass ceramic sealing thin strip, comprising the steps of:

• selecting a glass ceramic powder having sealing properties,
• adjusting the glass ceramic powder into a slurry and preparing a green tape substrate through tape casting molding process, wherein the slurry ingredient comprises essentially of sealing glass ceramic powder, organic solvent, dispersant, pore former and binding agent,
• laminating a thin glass ceramic green tape of the glass ceramic sealing thin strip to form the glass ceramic sealing thin strip through a process of thermal lamination and water pressure equalization;
• preparing a size of the glass ceramic sealing thin strip in conformance with the size of a SOFC cell;
• cutting the glass ceramic sealing thin strip into a single sheet thin strip kit for sealing the SOFC cell stack through a molding process in conformance with the geometry of the SOFC cell stack assembly, wherein the sealing strips are punched into various shapes through the molding process, including frames with square hollow portion, rings with circular hollow portion, plates with a plurality of circular hollow portion, and parts cut into various shapes in conformance with cell plates configured in the SOFC cell stack assembly;
• attaching the single sheet thin strip kit of the glass ceramic sealing thin strip between unit cell chips and components of the SOFC cell stack assembly, and soften the SOFC cell stack assembly at high temperature from 800° C. to 900° C. before pressing and sealing the SOFC cell stack assembly;
• determining an electrical performance test of the open-circuit voltage of a single cell of the SOFC cell stack assembly sealed by the glass ceramic sealing thin strip thus manufactured.