3results about How to "Improve ionic conductance" patented technology

The present invention provides a rare earth modified plastic and a preparation method thereof. The plastic is a lanthanum humate modified polypropylene film with a thickness of 5 to 20 μm, which is prepared by a dry method using the following raw materials: 75% to 95% polypropylene main material, 2% to 10% copolymer elastomer and 1% to 15% lanthanum humate, and the film breaking temperature of the modified polypropylene film is ≥180°C. The plastic preparation method comprises the following steps: weighing the polypropylene main material, copolymer elastomer and lanthanum humate in proportion, adding the above components into a high-speed mixer and mixing them evenly; subjecting the mixed raw materials to melt extrusion, sheet casting, biaxial stretching treatment and heat treatment in sequence to obtain a polypropylene film intermediate; subjecting the polypropylene film intermediate to corona treatment to obtain a polypropylene film. The polypropylene film combines the advantages of rare earth lanthanum and humic acid, has good mechanical strength, higher thermal stability and excellent electrolyte wettability without increasing the thickness of the diaphragm, and has high ionic conductivity and excellent and stable electrochemical properties when used for lithium battery diaphragms.

This invention discloses an oil-based binder, anode slurry, a composite silicon anode, and an all-solid-state battery, belonging to the technical field of all-solid-state battery energy storage materials. The oil-based binder comprises component A and component B; component A is a copolymer composed of acrylate, long-chain ether oxygen bonds, and epoxy active groups, while component B is a styrene-ethylene-butene-styrene block copolymer. This binder is prepared through free radical polymerization and physical blending, is soluble in weakly polar solvents, and is suitable for composite silicon anode systems based on sulfide solid electrolytes. The binder provided by this invention possesses excellent ion conduction ability, mechanical properties, and interfacial adhesion, effectively buffering the volume expansion of the silicon anode, maintaining electrode structural stability and interfacial ion transport, thereby significantly improving the rate performance and long-cycle stability of the all-solid-state battery.

This invention relates to the field of lithium-ion battery cathode material technology, specifically a high-performance lithium-rich manganese-based cathode material based on pretreated boron nitride, its preparation method, and its application. The preparation method includes: introducing hydroxyl and amino groups onto the surface of boron nitride nanosheets; preparing a composite precursor powder by mixing a nickel-cobalt-manganese hydroxide precursor, a lithium source, TiO2, a phosphorus source, and pretreated boron nitride; sequentially performing conventional pre-calcination, a first-segment Joule heat treatment, and a second-segment Joule heat treatment; performing a third-segment instantaneous Joule heat treatment, followed by quenching; by introducing a surface-functionalized high thermal conductivity boron nitride network into the bulk phase of the material, and combining a programmed sequential heat treatment of "pre-calcination-two-segment Joule heat treatment" with instantaneous surface melting and quenching, this method effectively solves the inherent thermal gradient problem of the Joule heating method, simultaneously achieving high bulk phase homogenization and surface stabilization, resulting in a product with excellent comprehensive electrochemical performance.