15results about How to "Block direct contact" patented technology

This invention provides a surface acoustic wave (SAW) filter, comprising a piezoelectric layer and interdigitated electrodes. The interdigitated electrodes are disposed on the piezoelectric layer and include at least a first metal layer and a second metal layer stacked together. The first metal layer is made of platinum or an alloy with platinum as the main component, and the second metal layer is made of aluminum or an alloy with aluminum as the main component. By setting the material of the second metal layer to aluminum or an alloy with aluminum as the main component, the uniformity of metal coverage of the electrode structure can be effectively improved, avoiding excessive local resistance or structural defects caused by poor coverage. Setting the material of the first metal layer to platinum or an alloy with platinum as the main component provides reliable support for the second metal layer, reducing the risk of deformation or corrosion of the aluminum layer in subsequent processes. By using a stacked structure of two complementary materials for the interdigitated electrodes, both structural miniaturization and improved overall electrical performance and structural reliability of the interdigitated electrodes are achieved.

This invention provides an electropolymer-modified aluminum current collector, its preparation method, and its application, relating to the field of aluminum foil current collector technology. By modifying the current collector surface, it primarily addresses the interface problem between the current collector and the active material, thereby improving the performance of lithium-ion batteries. This invention uses an aluminum foil current collector as the anode, a graphite plate as the cathode, and an acidic solution of a conductive polymer monomer as the electrolyte. Anodizing electropolymerization is performed using a constant current or constant voltage method, followed by washing and drying to obtain the electropolymer-modified aluminum current collector. The conductive polymer monomer is at least one of aniline, thiophene, and pyrrole; the concentration of the conductive polymer monomer in the electrolyte is 0.1-1.0 mol / L; and the polymerization time is 5-10 min. This invention effectively reduces the contact resistance between the current collector and the active material, improves the bonding strength between the coating and the substrate, and enhances the corrosion resistance of the current collector, showing promising application prospects.

This invention discloses a sea urchin-shaped oxygen-rich vacancy O vac This paper describes a CuO@ZIF-8 core-shell structured photothermal catalyst, its preparation method, and its application, belonging to the fields of photocatalytic materials and artificial nitrogen fixation technology. The technical solution is as follows: the catalyst has a core-shell structure, with the core being urchin-shaped copper oxide (CuO) microspheres. These microspheres are assembled from radially arranged one-dimensional nanoneedles or nanospikes, and the surface of the core contains oxygen vacancies (O). vac The shell is an in-situ grown ultrathin zeolite imidazole ester framework material, ZIF-8, which possesses hydrophobic and molecular diffusion channel properties. This invention also constructs a matching biomimetic three-phase interface photothermal reaction system. Through the synergy of a hydrophilic substrate supplying water and a hydrophobic, permeable shell, it achieves a balance between gas diffusion and proton supply, reducing the submersion of active sites by liquid water and the occurrence of side reactions. This invention has significant advantages such as high photothermal conversion efficiency, mild preparation conditions, and high gas-liquid interface mass transfer efficiency.

This invention relates to the field of daylily cultivation technology, specifically to a method for cultivating daylilies resistant to leaf rust. The invention provides a method for cultivating daylilies resistant to leaf rust, comprising the following steps: Seed treatment: After sterilization, daylily seeds are soaked in a seed treatment agent and then placed at a constant temperature of 35-37℃ for 6-8 days to obtain germinated daylily seeds; Seedling management: The germinated daylily seeds are sown in a seedling substrate and cultivated until germination, obtaining daylily seedlings; Transplanting: The daylily seedlings are transplanted into soil treated with a soil treatment agent. This invention's cultivation method can improve the resistance of daylilies to leaf rust.

This application relates to the field of hot-air expansion part forming and manufacturing technology, and particularly to a method for preparing highly corrosion-resistant hot-air expansion parts. The method includes: hot-air expanding non-zinc-based coated hot-formed steel to obtain a heat-treated substrate; quenching the heat-treated substrate to obtain a quenched hot-air expansion part; hot-dip coating the quenched hot-air expansion part with a zinc-based coating using a zinc-containing plating solution to obtain a hot-air expansion part containing a zinc-based coating; wherein the hot-dip coating temperature is proportional to the thickness of the quenched hot-air expansion part; and heat-treating the hot-air expansion part containing the zinc-based coating to obtain a zinc-based coated hot-air expansion part. This preparation method, through full-process control of "substrate pretreatment → precise hot-dip coating → coating structure optimization," synergistically optimizes the formation quality, structural stability, and bonding performance with the substrate of the zinc-based coating, improving the corrosion resistance of the hot-air expansion part from three dimensions: physical barrier, sacrificial anode protection, and structural reinforcement.

This application provides an anode material for solid-state batteries, a method for preparing the same, and a solid-state battery, relating to the field of solid-state batteries. The anode material includes secondary particles, which are spherical in shape and formed by stacking multiple primary particles. The primary particles include graphite and a coating layer distributed on at least a portion of the graphite surface. The coating layer is made of at least one of titanium dioxide, alumina, lithium niobate, lithium zirconate, lithium fluoride, silicon, and tin. The anode material of this application, comprising graphite and a coating layer on the graphite surface, effectively physically isolates the graphite from the contact with the sulfide solid electrolyte, significantly suppressing side reactions at the interface and effectively improving the first-cycle coulombic efficiency and cycle stability of the anode material.

The application provides a battery monomer, a battery device, an energy storage device, an energy storage system, a power consumption device and a charging network. The battery monomer comprises: a shell having a containing cavity; an electrode assembly arranged in the containing cavity; and a support arranged in the containing cavity, wherein the support and the electrode assembly are distributed along a first direction, and the support is located between the electrode assembly and the shell; wherein along the first direction, the thickness dimension of the support is a, the height dimension of the shell is h, and the thickness dimension a of the support and the height dimension h of the shell satisfy: 4x10 ‑4 ≤a / h≤30x10 ‑4 The application can effectively balance the battery capacity and the heat dissipation requirement, and guarantee the cycle life of the battery.

This invention discloses a symbiotic lithium-ion sieve membrane, its preparation method, and its application in seawater lithium extraction. The symbiotic lithium-ion sieve membrane comprises an inorganic lithium-ion sieve membrane and a symbiotic structural layer grown on its surface. The symbiotic structural layer includes a protective layer and a lattice-matched interface phase formed between the protective layer and the inorganic lithium-ion sieve membrane. This interface phase is formed by the protective layer's main material penetrating into the inorganic lithium-ion sieve membrane and then being reconstructed. The preparation method involves spin-coating a symbiotic structural layer precursor sol onto the polished surface of the inorganic lithium-ion sieve membrane, followed by sintering to allow the precursor material to penetrate and grow. This spin-coating-sintering process is repeated until a completely covering symbiotic structural layer is formed. The symbiotic lithium-ion sieve membrane prepared by this invention maintains continuous Li... + While providing a transmission channel, it can effectively block the chemical corrosion of inorganic lithium-ion screen membranes by seawater, greatly improving their operational stability and making them stable for use in the lithium extraction process from seawater or brine.

This utility model discloses a stable pole-mounted circuit breaker, which includes a mounting plate and a pole-mounted circuit breaker body. The pole-mounted circuit breaker body has mounting portions on both sides. The mounting plate has a first recessed cavity with an opening to accommodate the mounting portions, and a second recessed cavity corresponding to the first recessed cavity is provided on the back of the mounting plate. Pressure plates are inserted into the first and second recessed cavities, with one pressure plate abutting against the mounting portion. The pressure plates are configured as an integrated structure. The pressure plates abut against the sidewalls of the recesses to reduce the lateral swaying of the pole-mounted circuit breaker body. A grooved locking fastening assembly and a second protective assembly using spring force improve connection reliability and pre-tightening force. Simultaneously, the first and second protective assemblies block humid air, water vapor, and rainwater, preventing corrosion and rust of the fastening components, ensuring their strength and fastening performance, reducing the risk of loosening, and improving the product's protective performance.

This invention relates to a C x N y This invention relates to a Pt@C fuel cell catalyst and its preparation method, belonging to the field of fuel cell catalyst technology. First, Pt@C is synthesized via a solvothermal reaction using ethylene glycol reduction. Then, it is mixed with a nitrogen-containing polymer material and cobalt chloride hexahydrate, and subjected to reduction in a reducing atmosphere, high-temperature treatment, carbon pyrolysis, and alloying to obtain porous nitrogen-containing carbon-coated Pt@C. x N y @PtCo / C catalyst. In the prepared catalyst, the porous coating layer significantly reduces the poisoning of catalyst particles by resin during fuel cell operation, improves cell activity, and extends cell life, exhibiting excellent activity and durability.

The application discloses a kind of mesoporous silicon carbon composite materials with multistage structure and preparation method and application, belong to silicon carbon negative electrode material synthesis technical field.The preparation method of the mesoporous silicon carbon composite materials with multistage structure includes the following steps: after mixing silicon powder and persulfate solution, oxidation treatment is carried out, then the obtained product is dispersed in oleic acid and surface modified, to obtain silicon@oleic acid dispersion liquid;Carbon source, citric acid, surfactant and initiator are pre-assembled in water, then the silicon@oleic acid dispersion liquid is added to carry out polymerization reaction, to obtain silicon@oleic acid@polymer precursor;Under inert atmosphere, the silicon@oleic acid@polymer precursor is carbonized, to obtain the mesoporous silicon carbon composite material with multistage structure.The material as lithium ion battery negative material can significantly improve the rate performance and cycle stability of lithium ion battery.

The application discloses an environment-friendly eutectic solvent anti-friction and anti-wear additive and a preparation method and application thereof, and belongs to the field of lubricating additives.The application uses cetyltrimethylammonium chloride / cetyltrimethylammonium bromide and natural plant source thymol as raw materials, mixes them in a molar ratio of 1:1 to 1:3, stirs them at a constant temperature of 90 DEG C for 2 hours, and thus a sulfur-free and phosphorus-free transparent stable eutectic solvent is prepared without an organic solvent and a catalyst; the solvent is used as an anti-friction and anti-wear additive, is added into lithium-based lubricating grease in an addition amount of 0.5wt% to 2.0wt%, is uniformly dispersed through three-roll grinding, and thus high-performance modified lubricating grease suitable for severe working conditions is obtained.The raw materials are green and renewable, the preparation process is mild and simple, and the environment compatibility is excellent; a low addition amount can significantly reduce a friction coefficient and wear volume, a dense adsorption film is formed on a metal friction surface, and the application is particularly suitable for long-acting anti-friction and anti-wear lubrication under high-speed and boundary lubrication working conditions such as cotton picker picking spindles.

This invention relates to the field of nanomaterial preparation technology and discloses a continuous preparation process for nano-titanium sol based on low-temperature crystallization and elemental doping. The process includes: preparing a clean metatitanic acid slurry; constructing a stable basic titanium solution containing hydrogen peroxide and lactic acid; preparing an active doping catalyst solution containing manganese and cerium; online merging the preheated basic titanium solution with the room-temperature catalyst solution, utilizing the chemical heat generated by the decomposition of hydrogen peroxide catalyzed by manganese ions to cause a temperature jump in the fluid, initiating crystallization; introducing the fluid into a tubular reactor for continuous microbubble crystallization under back pressure; and finally obtaining nano-titanium sol through flash pore formation and rapid cooling stabilization. This invention utilizes the internal heat of reaction to eliminate the heat transfer gradient, utilizes the microbubble barrier effect to inhibit agglomeration, and achieves uniform elemental doping through in-situ catalysis, solving the problems of low heating efficiency, easy agglomeration, and uneven doping in traditional processes. The resulting sol has uniform particle size and good dispersibility.

This application relates to a positive electrode active material and its preparation method, and a battery, belonging to the field of battery technology; the positive electrode active material has a core-shell structure, the core of the core-shell structure includes a lithium-rich manganese-based active material, and the shell layer of the core-shell structure includes Li2SO4, Li2SeO4, and Li2Se. x S 1‑x At least two of the following O4, wherein 0 < x < 1, are obtained by coating Li2SO4, Li2SeO4 and Li2Se with a lithium-rich manganese-based active material. x S 1‑x At least two of the shells formed in O4, utilizing Li2SO4, Li2SeO4, and Li2Se x S 1‑x O4 and other materials have high ionic conductivity, which can effectively promote the transport of lithium ions at the interface of lithium-rich manganese-based active materials, giving the positive electrode active material a high ion diffusion coefficient.

This invention relates to the field of electronic ceramic substrates and provides a method for preparing a black alumina substrate, which solves the defects of existing black alumina substrates, such as low thermal conductivity and low mechanical strength, due to defects in the preparation process. The preparation steps include: (1) preparing raw materials; (2) preparing slurry; (3) casting; (4) debinding; (5) sintering; (6) annealing; and (7) surface treatment.