8results about How to "Reduce migration resistance" patented technology

The application discloses a polymer electrolyte for a lithium metal battery and a preparation method and application thereof, and relates to the technical field of battery electrolyte materials. + The desolvation energy barrier at the electrode interface is reduced, the ionic conductivity of the electrolyte is significantly enhanced, and the lithium ion can be guided to form a stable solid electrolyte interface film in cooperation with the lithium ion, so that the uniform lithium ion flow is achieved, the uncontrollable growth of lithium dendrites is significantly inhibited, the side reaction consumption of the electrolyte in the cycle process is greatly reduced, and the long-period stability of the battery is effectively ensured, and the application is suitable for large-scale popularization and application in lithium metal batteries.

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

The present application relates to the technical field of gel electrolyte for supercapacitor, in particular to a gel electrolyte based on lysozyme amyloid fibers and application thereof. The ion conductivity of the conventional plant protein-based gel electrolyte is poor, and the electrical performance needs to be further improved. In view of the above problems, the present application provides a gel electrolyte based on lysozyme amyloid fibers. The lysozyme in the formula self-assembles into amyloid fibers under acidic conditions, and the surface of the amyloid fibers is rich in polar groups such as hydroxyl, carboxyl and amino groups, which can effectively promote the dissociation of lithium salt. At the same time, the three-dimensional network structure formed by the self-assembly of the fibers. Glycerol as a small molecule plasticizer inserts between the polymer chains. Lithium perchlorate and other lithium salts can provide high concentration of free lithium ions due to the large anion volume and low dissociation energy. The above components synergize and jointly act, effectively improving the comprehensive electrical performance of the gel electrolyte.

The application provides a cation exchange membrane and a preparation method and application thereof, and belongs to the technical field of cation exchange membranes.The method provided by the application is free of volatile organic compounds, toxic and harmful monomers or heavy metal components, and the raw material itself is environmentally friendly.The method is free of harmful gas emission and hazardous waste generation, and is environmentally friendly.The cation exchange membrane material prepared by the method is chemically stable, easy to recycle after being discarded, free of additive precipitation during use, and free of pollution to the treatment system.The water-soluble dispersion bonding medium adopted by the application forms rich and uniform connected pore structures in the cation exchange membrane after being washed by water, greatly reduces ion migration resistance, significantly alleviates membrane polarization, and improves ion exchange rate and energy utilization efficiency when used for separation.The method provided by the application is free of complex chemical reactions, harsh process conditions, and standardized operation steps, and is easy to realize large-scale continuous production.

This application discloses a method for preparing a rare-earth composite solid electrolyte coating material, relating to the field of solid-state battery technology, comprising the following steps: Step 1, modifying solid high-purity, highly colloidal alumina powder with rare-earth-based precursor powder to obtain a modified mixture; Step 2, subjecting the modified mixture to sequential acidification and high-speed stirring dispersion to obtain a slurry; Step 3, adding LATP solid electrolyte powder to the slurry and mixing and beating to obtain a coating material; wherein the modified mixture is obtained through surface coating modification or doping modification. This application has the effect of enhancing the ion transport capability of the coating material in solid-state batteries and improving chemical and thermal stability.

This invention provides a battery negative electrode sheet and its preparation method. At least one surface of the current collector is provided with an active material layer comprising single-walled carbon nanotubes (SUVs) and silicon-carbon. Grooves are formed on the active material layer, and the depth of the grooves is related to the content of SUVs and silicon-carbon as follows: H = 0.236 × b / w; where H is the groove depth in μm, w% is the mass percentage of SUVs, and b% is the mass percentage of silicon-carbon. This invention forms a synergistic system of "silicon-carbon improving energy density + single-walled carbon nanotubes improving fast-charging performance + grooves mitigating silicon-carbon deformation." By quantitatively defining the relationship between the groove depth and the content of the two core components, the structural stability problem caused by the volume expansion of silicon-carbon materials is solved, and the contradiction between fast-charging performance and energy density brought about by the addition of SUVs is balanced, enabling the negative electrode sheet to simultaneously possess high energy density, excellent fast-charging performance, and long cycle life.

The application discloses a step-by-step doped porous lithium iron manganese phosphate composite material and a preparation method thereof. 2+ The application discloses a step-by-step doped porous lithium iron manganese phosphate composite material and a preparation method thereof. 2+ The application discloses a step-by-step doped porous lithium iron manganese phosphate composite material and a preparation method thereof. 2+ The application discloses a step-by-step doped porous lithium iron manganese phosphate composite material and a preparation method thereof. 2+ The application discloses a step-by-step doped porous lithium iron manganese phosphate composite material and a preparation method thereof.

The application discloses a magnesium hydroxide-based high-safety lithium ion battery diaphragm and a preparation process thereof, and belongs to the technical field of lithium ion battery materials. The magnesium hydroxide-based high-safety lithium ion battery diaphragm comprises a polyolefin-based film and a composite functional coating attached to the surface of the polyolefin-based film. In the application, the surface of magnesium hydroxide is chemically grafted and modified by using a specific silane coupling agent, so that the interface compatibility between the inorganic filler and the organic matrix and the binder is obviously improved. The chemical bond formed by the hydrolysis product of silane and the hydroxyl group on the surface of magnesium hydroxide is used to introduce an organic molecular layer on the surface of the inorganic particles, effectively reduces the surface energy and inhibits the particle agglomeration, and thus the dispersion uniformity of the filler in the coating slurry is greatly improved.