3results about How to "Lower densification temperature" patented technology

The invention belongs to the technical field of fuel cells, and provides an electrolyte of an SOFC (solid oxide fuel cell) and a preparation method and application of the electrolyte. The preparation method comprises the following steps: mixing the oxide of the electrolyte matrix, the salt of the doping element, the sintering aid and the complexing agent to obtain mixed powder; and drying and calcining the mixed powder to obtain the catalyst. The invention also discloses the electrolyte of the SOFC prepared according to the method and the SOFC. The electrolyte comprises the electrolyte, a cathode, an anode and a connector. The sintering aid is added when the electrolyte of the SOFC is prepared, the mixed ceramic powder can be prepared through a one-step method, and the densification temperature of the electrolyte is reduced, so that the density of an electrolyte layer can be improved, and the battery performance of the SOFC can be further improved. The preparation process is simple, and electrolyte powder does not need to be prepared firstly and then a sintering aid does not need to be added.

The invention relates to the technical field of membrane separation, and discloses a preparation method of a high-performance solid electrolyte membrane Joule hot pressed sintering. According to the method, a Joule hot pressing sintering process is adopted, solid electrolyte powder is taken as a raw material, a proper amount of powder is weighed and put into a mold of Joule hot pressing equipment, and pressure is applied to an upper graphite plate and a lower graphite plate in a vacuum or inert gas environment. Through the synergistic effect of external pressure and Joule heat, the temperature of the material can be rapidly increased to 800-1500 DEG C in an extremely short time, and heat-preservation sintering is completed, so that the sintering period is remarkably shortened, the preparation efficiency is improved, and a compact and high-performance solid electrolyte membrane is obtained. Compared with a traditional heating furnace which needs at least more than 3 hours in heating time and Joule hot pressing is controlled within 1 minute, the heating time can be effectively shortened by at least 90% or more, and the prepared solid electrolyte membrane has high density and low defects, shows excellent ion separation performance and is suitable for industrial production. And a reference thought is provided for related fields such as efficient recovery and extraction of lithium resources.

The application discloses a root system structure bionic high-temperature-resistant protective coating and a preparation method thereof. The coating comprises a root system structure module and a soil structure module. The root system structure module is a boride-silicon-based ceramic phase, and the soil structure module is a low-melting-point glass phase. The low-melting-point glass phase is stabilized by the boride-silicon-based ceramic phase in the composite coating through bionic root system structure. The preparation method comprises the following steps: mixing raw materials, densification treatment and polishing. Compared with the prior art, the application has the advantages that the low-melting-point glass in the high-temperature-resistant protective coating is effectively compounded, the softening modification effect of the glass phase is utilized, the densification temperature of the coating is reduced, the sealing degree of the oxygen-blocking structure of the coating is further promoted, the oxygen-blocking defect problem of the internal structure of the coating is solved, and the advantages of energy saving and oxygen-blocking strengthening of the coating are achieved.