5results about How to "Inhibit interface reaction" patented technology

This invention relates to the field of solid-state battery technology and discloses a dual-phase solid electrolyte powder and its preparation method. The dual-phase solid electrolyte powder is a uniform composite of LATP (lithium aluminum titanium phosphate) and LLZTO (lithium lanthanum zirconium tantalum oxide), with a LATP to LLZTO weight ratio of 1:2 to 2:1, a particle size of 1 to 3 μm, and an ionic conductivity ≥2.3 × 10⁻⁶. ‑ ³S / cm. Its preparation method includes LATP precursor solution preparation, slurry preparation, spray pyrolysis, and high-temperature calcination steps. This invention, through the synergistic effect of a two-phase structure, combines the high bulk ionic conductivity of LATP with the good interfacial stability of LLZTO, effectively reducing interfacial impedance and suppressing Ti in LATP. 4+ The reduction reaction improves lithium-ion transport efficiency and cycle stability. Batteries using this electrolyte can achieve an initial discharge capacity of over 176 mAh / g, retain ≥88% capacity after 200 cycles, and exhibit excellent safety performance, making it widely applicable to various solid-state lithium-ion batteries.

This invention discloses an electrical graphene-aluminum rod and its preparation method, belonging to the field of materials processing technology. The method includes the following steps: S1, solution treatment and quenching of an Al-Mg-Si alloy to obtain a solution-treated Al-Mg-Si alloy; S2, processing grooves on the surface of the solution-treated Al-Mg-Si alloy, filling the grooves with graphene powder, and performing rotary friction extrusion processing under low-temperature rapid cooling in a cooling medium; S3, performing aging treatment after rotary friction extrusion processing to obtain the electrical graphene-aluminum rod. This invention, using the above-mentioned electrical graphene-aluminum rod and its preparation method, optimizes the process sequence and controls the rotary friction extrusion process, not only ensuring uniform dispersion of graphene in the aluminum matrix and sufficient suppression of interfacial reactions, but also forming ultrafine crystals and extremely fine nano-Mg2Si precipitates in the matrix. The resulting graphene-aluminum rod possesses both high strength and high conductivity.

The application belongs to the technical field of semiconductor material preparation, and relates to a multi-element oxide film and a preparation method and application thereof. In view of the technical problem that the multi-element oxide film is difficult to be prepared uniformly in a large area in the prior art, the application provides a preparation method of the multi-element oxide film, which is prepared by molecular beam epitaxy co-evaporation and comprises the following steps: placing a substrate in a molecular beam epitaxy co-evaporation preparation cavity, and vacuumizing the cavity; sequentially depositing a YSZ buffer layer and a CeO2 buffer layer from bottom to top in the cavity, and obtaining a substrate containing the buffer layers by controlling electron beam automatic evaporation through a film thickness gauge; depositing a YBCO film on the substrate containing the buffer layers by co-evaporating yttrium, copper and barium fluoride, and obtaining a multi-element oxide film with good large-area uniformity by co-evaporating the Y evaporation source, the Cu evaporation source and the Ba evaporation source through the film thickness gauge. The application further provides the multi-element oxide film and application thereof.

The application discloses an aluminum-based graphene material and a preparation method, and aims to solve the technical problems of poor interface wettability of graphene and an aluminum matrix, easy agglomeration, secondary agglomeration in a solidification process and difficulty in continuous production. A nano copper coating layer is formed on the surface of graphene through chemical copper plating, so that the interface wettability is improved. The copper-coated graphene powder is uniformly dispersed in an aluminum melt through ultrasonic field and electromagnetic field composite dispersion or synchronous feeding of jet deposition, and then rapid solidification forming is carried out through a Castex continuous casting and extrusion or jet deposition and continuous extrusion integrated process, so that the uniform distribution and densification of graphene in the aluminum matrix are realized. The application is mainly used for high-conductivity and high-strength aluminum-based graphene materials required in the fields of new energy vehicles, 5G communication, rail transit and the like.

The application discloses an electrolyte, a secondary battery and a power utilization device, and belongs to the battery field. The electrolyte comprises a first additive, and a chemical structural formula of the first additive comprises a heterocyclic ring and a thiourea group. The electrolyte disclosed by the application can improve the high-temperature storage performance, low-temperature discharge performance and cycle performance of the battery.