6results about How to "Improve ion conduction" patented technology

The application provides a pore-forming agent for lithium ion batteries and a preparation method thereof, which comprises a wall material preparation step, a core material preparation step, a W / O type initial milk preparation step and a pore-forming agent for lithium ion batteries preparation step. The pore-forming agent preparation method is a new pore-forming agent synthesis route, which has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and environmental protection. The technology can accurately construct a uniform multi-level pore network by introducing the pore-forming agent into the electrode, significantly reduces the charge transmission impedance, effectively improves the fast charging capacity and high-rate discharge performance of the battery, greatly improves the electrode-electrolyte interface contact, and ensures the full use of the active material. The application also provides an application of the pore-forming agent for lithium ion batteries to lithium ion batteries. The application of the pore-forming agent for lithium ion batteries to the lithium ion batteries can improve ion conduction and improve the rate performance.

The invention belongs to the field of energy materials, and discloses a preparation method of a lithium metal negative electrode of a lithium metal battery and a product and application of the lithium metal negative electrode of the lithium metal battery, and the preparation method comprises the following steps: using a conductive substrate as a working electrode, using an electrode composed of a lithium-containing substance as a counter electrode, and performing electro-deposition on the working electrode in a pure solvent or a low-salt solution to obtain the lithium metal negative electrode of the lithium metal battery. The correspondingly obtained working electrode is the lithium metal negative electrode. By using a pure solvent or a low-salt solution, high-efficiency electrochemical deposition of lithium can be carried out without participation of a traditional electrolyte of high-content lithium salt, correspondingly, the metallic lithium elementary substance (or lithium alloy) deposited on the working electrode is high in density, and the performance of the lithium ion battery is improved. The obtained electrode deposited with the lithium metal can be particularly used as a negative electrode to be applied to a lithium ion battery, and has the advantages of being simple in method, low in cost, controllable, expandable, high in industrial adaptability and convenient for large-scale operation.

The invention discloses a modified oxide solid electrolyte material as well as a preparation method and application thereof, and relates to the technical field of batteries. The preparation method of the modified oxide solid electrolyte material comprises the following steps: mixing a lithium source, an aluminum source and a titanium source in absolute ethyl alcohol, adding a phosphorus source, stirring and drying, and sequentially preheating, calcining and ball-milling to obtain lithium titanium aluminum phosphate powder; placing the modified oxide solid electrolyte material and dicyandiamide in absolute ethyl alcohol for mixing and ball milling, drying, performing heat treatment, cooling, dispersing in deionized water, adding magnesium nitrate, aluminum nitrate and urea for mixing, and sequentially preheating and calcining to obtain a modified oxide solid electrolyte material; when applied to the battery, the battery cycle stability is improved.

The application provides a lithium iron phosphate positive electrode active material, a preparation method of the lithium iron phosphate positive electrode active material, a positive electrode sheet, a battery, a battery pack and an electric device. 16 spins / g~2.0000×10 16 spins / g. The lithium iron phosphate positive electrode active material provided by the application has a high compaction density and has normal temperature rate discharge and low temperature discharge performance.

The invention discloses a composite current collector and a preparation method thereof, a magnesium ion battery and an electric device. The composite current collector comprises a conductive composite base film, a three-dimensional porous conductive layer located on the conductive composite base film, and a first modified layer located on at least part of the surface of the three-dimensional porous conductive layer on the conductive composite base film, the conductive composite base film comprises a polymer base film and a first magnesium-loving metal, a groove is formed in the surface of the polymer base film, and the first magnesium-loving metal is located in the groove; the three-dimensional porous conductive layer is located on the side, away from the polymer base film, of the first magnesium-loving metal and comprises at least two layers of alloy layers arranged in a laminated mode, each alloy layer comprises copper and second magnesium-loving metal, and the content of the second magnesium-loving metal in the multiple alloy layers is gradually decreased from the side close to the conductive composite base film to the side away from the conductive composite base film; the first modified layer includes a covalent organic framework material. The composite current collector can improve the deposition of magnesium ions, inhibit the growth of dendrites, reduce the side reaction of an interface, and improve the cycling stability of the magnesium ion battery.

The present invention relates to the field of battery technology, and specifically to an electrode plate, a preparation method thereof, and a battery. The electrode plate comprises: a current collector; an electrode material layer, arranged on at least one side surface of the current collector along the thickness direction; an intermediate transition layer, arranged on the surface of the electrode material layer away from the current collector, the electrode material layer and the intermediate transition layer both comprising active materials and a composite solid electrolyte; and a solid electrolyte layer, arranged on the surface of the intermediate transition layer away from the electrode material layer, the solid electrolyte layer comprising a composite solid electrolyte; the composite solid electrolyte comprises an inorganic solid electrolyte and an organic solid electrolyte having lithium and electrical conductivity; the content of the composite solid electrolyte in the intermediate transition layer is greater than the content of the composite solid electrolyte in the electrode material layer. A battery comprises the provided electrode plate. The present application can improve the migration kinetics of lithium ions, improve the conductivity and compaction density of the plate, and improve the cycle performance and safety performance of the battery.