12 results about "Copper fluoride" patented technology

The invention belongs to the technical field of thermal batteries, and particularly relates to a preparation method and application of a copper fluoride-based heterojunction thermal battery positive electrode material. According to the invention, fluorides with different phases and different band gaps are utilized to form a heterogeneous interface microcosmically, an electron circulation directional electric field is formed at the inhibition interface, migration of electrons and ions is accelerated, and the ion characteristics of the fluorides are improved. According to the thermal battery positive electrode material provided by the invention, the voltage of a unit battery can be remarkably increased, charge and ion transfer of the positive electrode material can be improved, so that the material can bear large pulse current and has relatively high specific capacity, and the material has good adaptability to existing electrolytes in the market at present and has a relatively high voltage platform and relatively high specific capacity. According to the invention, the conductivity of the reaction product is further enhanced by using the copper elementary substance generated by the preferential reaction of copper fluoride, and an ion transmission channel is constructed by using the copper elementary substance generated by the preferential reaction of copper fluoride as a support frame, so that the copper fluoride-based composite material has high-potential and high-power discharge capability.

The application relates to the development and technical field of electrocatalysts, and discloses a preparation method and application of a proton sponge modified fluorine atom doped metal copper electrode material, which comprises the following steps: adding a dispersion solution of a proton sponge into a dispersion solution of a hydroxyl copper fluoride precursor to obtain a mixed solution; uniformly spraying the mixed solution on a polytetrafluoroethylene film substrate loaded with copper nanoparticles to obtain a proton sponge modified hydroxyl copper fluoride precursor electrode material; and then electrochemically reducing the proton sponge modified hydroxyl copper fluoride precursor electrode material to obtain the proton sponge modified fluorine atom doped metal copper electrode material. The application further discloses the proton sponge modified fluorine atom doped metal copper electrode material obtained by the above preparation method and application of the proton sponge modified fluorine atom doped metal copper electrode material to an electro-reduction carbon dioxide reaction as a working electrode. The electrode material provided by the application exhibits excellent electro-reduction CO2 performance in an acidic environment, and realizes the preparation of high-value C 2+ products with high selectivity under an industrial-grade current density.

This invention relates to a high-interfacial-wetting cathode material and its preparation method in the field of thermal battery technology. The material comprises a cathode active material and a halide cathode additive, wherein the halide cathode additive accounts for 5% to 20% by mass. The cathode active material is a sulfide cathode, including one or more of FeS2, CoS2, and NiS2. The halide cathode additive is a metal halide, including one or more of nickel chloride, cobalt chloride, nickel fluoride, and copper fluoride. This solution significantly reduces the interfacial impedance between the cathode and the electrolyte, improving power performance and discharge capacity.

A polyimide resin composition containing a polyimide resin (A) and an antioxidant (B), wherein the polyimide resin (A) contains a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of the formula (1) with respect to the total of the repeating structural unit of the formula (1) and the repeating structural unit of the formula (2) is 20 to 70 mol %, and the antioxidant (B) contains one or more copper compounds (B1) selected from the group consisting of copper fluoride, copper bromide, copper iodide, and copper carboxylates, or a cerium-containing compound (B2);wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 16 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic group.

This invention discloses an aqueous copper-ion battery electrolyte, its preparation method, and the copper-ion battery itself. The electrolyte comprises a copper salt, a solvent, and a copper halide salt additive. The copper salt is copper sulfate, and the solvent is deionized water. The concentration of the copper salt in the electrolyte is 0.5–1.5 mol / L. The copper halide salt additive is selected from one or more of copper fluoride, copper chloride, and copper bromide, and the total concentration of the copper halide salt additive in the electrolyte is 0.005–0.2 mol / L. When the electrolyte of this invention is used in an aqueous copper-ion battery, the halide ions in the copper halide salt additive can preferentially adsorb onto the surface of the metallic copper anode, inducing uniform copper deposition and inhibiting the formation of by-products. This significantly improves the coulombic efficiency and cycle stability of the aqueous copper-ion battery. Furthermore, the electrolyte preparation process is simple, low-cost, and environmentally friendly, making it suitable for large-scale energy storage scenarios.

The invention relates to an electrochemical immunosensor constructed based on a composite material prepared from gold nanoparticles, a zeolite imidazole framework and copper fluoride and application of the electrochemical immunosensor in detection of PEDV (Porcine Epidemic Diarrhea Virus). The construction method of the electrochemical immunosensor comprises the following steps: preparing a ZIF-8 (at) CuF2 material, preparing an AuNPs (at) ZIF-8 (at) CuF2 material, preparing an Au (at) GO material and preparing an Nb2 (at) AuNPs (at) ZIF-8 (at) CuF2 material. The preparation method disclosed by the invention has the outstanding advantages that the AuNPs (at) ZIF-8 (at) CuF2 nano composite material is successfully prepared and is proved through a transmission electron microscope image, element distribution analysis, Zeta potential, an XRD powder X-ray diffraction pattern and an XPS photoelectron spectroscopy; the method is applied to sensor construction for the first time; the sandwich type electrochemical immunosensor for measuring the virus concentration by using over-pulse voltammetry (DPV) is constructed by utilizing the characteristic that the nano antibody can specifically recognize S protein of the porcine epidemic diarrhea virus.

The invention discloses functional ceramic coating slurry and a diaphragm preparation method in the technical field of battery diaphragms. The functional ceramic coating slurry is prepared from the following components in parts by weight: copper fluoride powder, ultrapure water, polyacrylate, aluminum oxide ceramic powder, a nano cellulose aqueous solution, an adhesive and a wetting agent. According to the invention, the copper fluoride powder is introduced into the coating slurry, so that the interface stability and heat resistance of the diaphragm and the pole piece are improved, and meanwhile, the growth of lithium dendrites of the negative electrode of the lithium battery can be inhibited, so that the stability of the lithium battery is improved.

The application discloses an electrode material and a preparation method and application thereof in a lithium ion battery electrode material, and belongs to the field of lithium ion batteries. The electrode material is copper melloate doped with hydroxyl copper fluoride; the preparation method of the material comprises the following steps: (1) preparing hydroxyl copper fluoride powder; (2) preparing copper melloate doped with hydroxyl copper fluoride. The material provided by the application can be used in a lithium ion battery as a negative electrode material. Due to the doping of metal fluoride, a more stable SEI film can be formed on the electrode surface, so that the material exhibits good cycle stability.

A reflective integrated electrochromic device, sequentially comprising: a first substrate layer (11), a working electrode layer (12), an integrated electrochromic layer (13), a counter electrode layer (14), and a second substrate layer (15), wherein the integrated electrochromic layer (13) comprises a metal source compound, the metal source compound being selected from one or more of silver chloride, silver acetate, silver nitrate, silver perchlorate, silver sulfate, silver cyanide, silver sulfide, silver hexafluorophosphate, silver tetrafluoroborate, silver tetrachloroaluminate, silver triflate, silver bistrifluoromethanesulfonimide, copper fluoride, copper chloride, copper cyanide, copper sulfate, copper acetate, copper aluminate, cuprous fluoride, cuprous chloride, cuprous cyanide, gold chloride, gold cyanide, gold sulfide, gold monochloride, aurous sulfide, nickel chloride, nickel sulfate, cobalt chloride, and platinum chloride. The dynamic change range of the transmittance / reflectance of the device is relatively large, and the device can achieve simultaneous management of light and heat, and can maintain a stable colored or faded state for one month, or even several months, under no-load conditions.

The invention relates to the technical field of solid-state batteries, and discloses an efficient solid-state battery interface stability improving method which comprises the following steps: firstly, forming a composite precursor layer consisting of copper fluoride and lithium fluoride on the surface of a sulfide solid-state electrolyte sheet body through a codeposition method; and then assembling the electrolyte sheet body with the layer and a lithium metal negative electrode. In the assembling process, the composite precursor layer and lithium metal are subjected to an in-situ chemical reaction, and a stable composite interface layer formed by uniformly dispersing nano metal copper particles in a lithium-rich fluoride matrix is generated. According to the invention, through the constructed interface layer, nano-copper particles are used as lithium-philic sites to induce uniform nucleation of lithium ions, and meanwhile, a lithium fluoride matrix is used as an electronic insulating layer to inhibit interface side reaction and lithium dendrite growth, and through the synergistic effect of the nano-copper particles and the lithium fluoride matrix, the problem of instability of an interface between a sulfide electrolyte and a lithium negative electrode is effectively solved; therefore, the critical current density, the cycle life and the rate capability of the solid-state battery are remarkably improved.

A high-voltage high-entropy metal fluoride positive electrode, a preparation method and applications thereof belong to the technical field of lithium ion batteries. Copper fluoride, iron fluoride, cobalt fluoride, nickel fluoride and manganese fluoride are mixed, sodium alginate is added, and high-entropy metal fluoride material uniformly fused with sodium alginate is obtained under argon protection ball milling; then, ketjen black is added under argon protection, and ball milling is carried out under the same conditions; the powder obtained by ball milling is mixed with a Mxene aqueous dispersion, coated on a titanium foil after ball milling, and dried to obtain a high-entropy metal fluoride positive electrode combined with a conductive binder. The application of high-entropy materials and high-conductivity cross-linked binders to copper fluoride positive electrodes utilizes the improvement of the two on the conductive capacity and the protection effect on copper fluoride, as well as the cross-linking effect among CuF2, SA and MXene, improves the conductive performance and cycle stability of the positive electrode, and enables the average discharge voltage of the full battery to break through 2.5V, so that it can be used for assembling full batteries.

The invention provides a method for mass production of a porous copper fluoride lithium ion battery positive electrode material, and belongs to the technical field of lithium ion batteries. According to the method, the copper fluoride material with the hole and gap structure is formed through the process that the mixture reacts to generate gas under the condition of high-temperature inert gas. The gap structure has the advantages that the lithium ion embedding capability of the material is greatly improved, a homogeneous crystallization core is provided for the electrode material during discharging, and the dynamic hindrance formed by a new phase is reduced; and the discharge reaction efficiency is improved.