5results about How to "Uniform interface" patented technology

The invention discloses a flame-retardant semi-solid gel electrolyte and a preparation method thereof, and the flame-retardant semi-solid gel electrolyte comprises the following raw materials in parts by weight: 100-120 parts of PVDF resin, 25-30 parts of PPC resin, 5-10 parts of modified hollow ceramic fiber, 3-5 parts of modified nano aluminum hydroxide, 15-20 parts of an organic solvent, and 4-6 parts of a conductive agent. The modified hollow ceramic fiber is a Li0. 5La0. 5TiO3 hollow ceramic fiber subjected to surface grafting modification by 3-aminopropyltrimethoxysilane, the modified nano aluminum hydroxide is an antioxidant flame retardant grafted modified nano aluminum hydroxide, and the antioxidant flame retardant is a triazine derivative containing a hindered phenol structure and a DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) structure. According to the flame-retardant semi-solid gel electrolyte disclosed by the invention, the gel strength of the flame-retardant semi-solid gel electrolyte is improved, meanwhile, the ionic conductivity of the flame-retardant semi-solid gel electrolyte is improved, and the flame-retardant property and the thermal stability of the flame-retardant semi-solid gel electrolyte are improved by adding the modified nano aluminum hydroxide.

The invention relates to a method for laminating cylindrical energy storage cells, comprising the following steps: providing an electrode stack (2) having at least one anode, at least one cathode and at least one separator; laminating a core region (2) of the electrode stack (1) by connecting the laminate to the core region (2) of the electrode stack (1) at a pressure and a temperature generated by a lamination rod (200); and winding the electrode stack (1) into an electrode roll (120) such that the core region (2) of the electrode stack (1) forms a roll core (190) of the electrode roll (120).

The invention provides a lithium metal surface interface protection material, a lithium metal negative electrode material and preparation and application thereof. The preparation method of the lithium metal surface protection material comprises the following steps: soaking a copper foil in a hydrogen chloride solution to remove impurities; mixing ammonium persulfate with a sodium hydroxide solution; putting a copper foil into the mixed solution to react, and forming a copper hydroxide sheet layer on the surface of the copper foil; and placing the precursor at the tail end of a tubular furnace, placing excessive sodium hypophosphite at the central position of the tubular furnace, carrying out high-temperature heating reaction in an inert gas atmosphere, and cooling to obtain the protective material. And further calendering on a lithium sheet by a mechanical rolling method to prepare the lithium metal negative electrode material. A copper phosphide array is transferred on a lithium metal foil through mechanical rolling, copper particles surrounded by a lithium phosphide network are generated through an interface reaction between metal lithium and Cu3P, and a 3D mixed ion / electron conductive intermediate layer for interface charge redistribution is formed and used for interface charge redistribution and improvement of the cycling stability of a lithium metal anode.

The utility model belongs to silicon carbide crystal preparation technical field relates to a kind of for controlling the airflow guide structure of silicon carbide crystal growth interface, including shell, upper graphite sheet, middle graphite sheet and lower graphite sheet.The utility model utilizes the spherical surface structure of lower graphite sheet lower part to guide the vaporization of edge to center convergence and from multiple third through-holes, when passing through middle graphite sheet, utilize the annular structure of middle graphite sheet to make the vaporization of center fast pass, the vaporization of edge is blocked by multiple second through-holes and slowly pass, finally make the vaporization uniform through multiple first through-holes, so that the vaporization is crystallized on the surface of seed crystal uniformly, avoid the concentration of edge vaporization greater than the concentration of center vaporization caused by the temperature of edge silicon carbide powder higher than the temperature of center silicon carbide powder, make the crystal ingot interface more uniform in the initial stage of crystal growth, improve the stability of silicon carbide crystal growth process.

This invention provides a copper-core aluminum-clad composite wire and its preparation method, belonging to the field of metal composite wire preparation technology. The invention constructs a composite alloy interface between the copper core and the aluminum cladding layer, synergistically reinforced by functionalized carbon nanotubes. An acid-treated carbon nanotube, nickel powder as the bonding agent, and selenium powder with refined grains are made into a slurry and coated onto the copper core. Then, hydrostatic extrusion achieves a tight composite with the aluminum tube. In subsequent drawing and annealing processes, high temperature drives the in-situ reaction of nickel and aluminum to generate intermetallic compounds, while the carbon nanotubes form a relatively stable bond with them, thereby improving interface strength and inhibiting cracking. Finally, a copper-core aluminum-clad composite wire with good interfacial bonding, mechanical properties, and electrical conductivity is obtained.