6results about How to "Increase interplanar spacing" patented technology

The invention relates to a preparation method and application of a lithium-rich manganese oxide positive electrode material with high capacity and long cycle stability, and the method comprises the following steps: mixing lithium acetate dihydrate, nickel acetate tetrahydrate, cobalt acetate tetrahydrate, manganese acetate tetrahydrate and citric acid monohydrate, adding into deionized water, uniformly stirring, adding oleic acid to prepare a precursor solution, and carrying out spray drying to prepare a precursor material; and carrying out heat treatment on the precursor material in an air atmosphere to prepare the lithium-rich manganese oxide positive electrode material Li < 1.2 > Ni < 0.13 > Co < 0.13 > Mn < 0.54 > O < 2 > with high capacity and long cycle stability. The lithium-rich manganese-based positive electrode material has the advantages that the lithium-rich manganese-based positive electrode material compositely modified by oleic acid and citric acid is simple in process, a spinel phase with high lithium ion conductivity is generated, and the lithium-rich manganese-based positive electrode material has high specific capacity and excellent cycle performance under high current density when being applied to a positive electrode of a lithium ion battery.

The invention discloses high-strength alloy resin for tile production and a preparation method of the high-strength alloy resin, and belongs to the technical field of resin tile modification, the high-strength alloy resin is obtained by adding a compatible modifier and compounding composite reinforced fibers in the alloy resin synthesis process, and the alloy resin is obtained by compounding modified PVC resin and polystyrene-acrylic resin. The composite reinforced fibers compounded by the modified calcium carbonate and the modified carbon fibers are doped, so that the overall strength and impact resistance of the alloy resin can be remarkably improved; through chemical bonding of maleic anhydride and 4-(hydroxymethyl) imidazole, an in-situ generated zinc metal framework can form a layer of film among resin molecules, so that different resins can be dissolved mutually, the compatibility of the resins is improved, and the molecular flexibility of the modified PVC resin is improved by increasing the length of a branched chain in a polymer chain of the modified PVC resin, so that the service life of the modified PVC resin is prolonged, and the service life of the modified PVC resin is prolonged. The flowability and the processability of the resin are further improved, so that the resin is easier to form in the processing process.

This application provides an amino- and tertiary-amine-modified triazine hard carbon porous material, its preparation method, and an anode. Using tris(4-aminophenyl)amine and 4-amino-3,5-dibromobenzonitrile as raw materials, acetonitrile as solvent, and CuI as catalyst, NH2-SL is synthesized via a Ullmann reaction. The mixture is then reacted in a tube furnace at 450℃ for 40 h to synthesize CTF-NH2 containing an imine structure. Subsequently, high-temperature calcination is performed to synthesize NH2-1000. The triazine porous framework obtained in this application exhibits excellent physicochemical stability, high nitrogen content, and high porosity. Compared to the material before calcination at 1000℃, the interplanar spacing of the hard carbon porous material increases by 0.0034 nm, which is more conducive to sodium ion insertion and extraction. Therefore, the prepared NH2-1000, as a sodium-ion battery anode, demonstrates a high reversible capacity of 209.1 mAh / g in a 2A / g rate performance test, making it widely applicable as a secondary battery anode material.

The invention discloses a double-layer hollow core-shell structure porous carbon hybrid material and its preparation method and application, the method comprising the following steps: 2-methylimidazole powder is dissolved in methanol, double-layer hollow Co-MOF-74 powder is added to form a uniform suspension A; zinc nitrate hexahydrate is dissolved in methanol to form solution B; solution B is added to suspension A, centrifuged, washed, and dried to obtain a double-layer hollow Co-MOF-74@ZIF-8 core-shell structure powder; double-layer hollow Co-MOF-74@ZIF-8 core-shell structure powder is annealed under argon protection to obtain a double-layer hollow core-shell structure porous carbon hybrid material, placed in a nitric acid solution, stirred in a water bath and reacted, the product is centrifuged, then washed clean with ethanol, and dried to obtain a pure double-layer hollow core-shell structure porous carbon hybrid material. The present invention gives full play to the advantages of two MOF material-derived porous carbons, and has both the conductivity of graphitized carbon and the high specific surface area of ​​porous carbon.

This application provides an amino- and tertiary-amine-modified triazine hard carbon porous material, its preparation method, and an anode. Using tris(4-aminophenyl)amine and 4-amino-3,5-dibromobenzonitrile as raw materials, acetonitrile as solvent, and CuI as catalyst, NH2-SL is synthesized via a Ullmann reaction. The mixture is then reacted in a tube furnace at 450℃ for 40 h to synthesize CTF-NH2 containing an imine structure. Subsequently, high-temperature calcination is performed to synthesize NH2-1000. The triazine porous framework obtained in this application exhibits excellent physicochemical stability, high nitrogen content, and high porosity. Compared to the material before calcination at 1000℃, the interplanar spacing of the hard carbon porous material increases by 0.0034 nm, which is more conducive to sodium ion insertion and extraction. Therefore, the prepared NH2-1000, as a sodium-ion battery anode, demonstrates a high reversible capacity of 209.1 mAh / g in a 2A / g rate performance test, making it widely applicable as a secondary battery anode material.

The invention discloses an A-RuTiO2-xNTs composite catalyst for hydrogen production through water electrolysis of a proton exchange membrane as well as a preparation method and application of the A-RuTiO2-xNTs composite catalyst, belongs to the technical field of catalysts for hydrogen production through water electrolysis, and aims at solving the technical problem that the activity and stability of Ru-based catalysts for hydrogen production through water electrolysis without heterogeneous metal doping in the prior art need to be further improved. The composite catalyst comprises a titanium felt substrate, an anoxic TiO2 nanotube array grown on the surface of the titanium felt substrate, and Ru nanoparticles loaded on the TiO2 nanotube array. According to the invention, the anoxic TiO2 nanotube array is grown on the surface of the titanium felt, and the Ru nanoparticles are loaded on the TiO2 nanotube array, so that the A-RuTiO2-xNTs composite catalyst shows the lowest overpotential, the minimum ohmic resistance and the optimal Tafel slope under the acidic condition, and the catalytic activity and stability of hydrogen production by electro-catalytic water decomposition are greatly improved.