5results about How to "Improve ion conduction ability" patented technology

The invention provides a battery monomer, a negative pole piece, a battery device and a power utilization device, the battery monomer comprises the negative pole piece, the negative pole piece comprises a bottom coating arranged on at least one side of a negative current collector, and the bottom coating comprises a plurality of first bulges protruding back to the negative current collector and a first concave part between two adjacent first bulges; the bottom coating layer comprises a first binder; the active material layer is arranged on one side, opposite to the negative electrode current collector, of the bottom coating layer, the active material layer comprises a plurality of second bulges protruding towards the bottom coating layer and second concave parts between two adjacent second bulges, and the active material layer comprises a second binder; the first bulge is coupled with the second concave part, and the second bulge is coupled with the first concave part; the mass content a of the first binder in the undercoat layer is greater than the mass content b of the second binder in the active material layer. The dynamic performance and the cycle life of the battery monomer are relatively good; the battery device and the power utilization device at least have the above beneficial effects.

The application discloses a kind of composite positive plate and lithium ion battery and preparation method.The composite positive plate includes positive current collector;Positive current collector surface is coated with positive active material layer;Positive active material layer surface is coated with solid electrolyte layer;Positive active material layer includes positive active material, oxide solid electrolyte, conductive agent, dispersing agent and binder and the mass ratio of these components is (91.9%~97.45%): (0.5%~5%): (1%~1.5%): (0.05%~0.1%): (1%~1.5%);Solid electrolyte layer includes oxide solid electrolyte, conductive agent, dispersing agent and binder and the mass ratio of these components is (13.9%~70.9%): (13.2%~49.2%): (0.6%~3.8%): (13.2%~49.2%);The application is conducive to guaranteeing battery thermal safety while significantly improving battery fast-charging capability.

This invention discloses a modified silicon-carbon composite material, an anode sheet, and a battery. The modified silicon-carbon composite material includes porous carbon, ring-patterned graphite nanoparticles, and silicon nanoparticles. The silicon nanoparticles are located within the pores of the porous carbon, and / or, within the pores of the ring-patterned graphite nanoparticles, and / or, in the pores between adjacent ring-patterned graphite nanoparticles. In the provided modified silicon-carbon anode material, the introduction of ring-patterned graphite nanoparticles into the porous carbon matrix improves conductivity through the ordered structure of the ring-patterned graphite nanoparticles, enhances ion conduction through the porous structure, and allows silicon to be deposited in the pores of the ring-patterned graphite nanoparticles, suppressing Si expansion and maximizing silicon capacity, thereby improving the conductivity, rate performance, and cycle performance of the silicon-carbon anode.

The invention belongs to the field of battery materials, and discloses a high-performance composite positive electrode material and a preparation method and application thereof.The preparation method of the high-performance composite positive electrode material comprises the steps that an MOF material and a flaky conductive carbon material are mixed through ball milling, then a solid electrolyte material is added for continuous ball milling, then the positive electrode material is added for continuous ball milling, roasting is conducted in the inert atmosphere, and the high-performance composite positive electrode material is obtained. Obtaining a finished product. An electron-ion-active material interpenetrating structure is formed by the MOF material, the sheet-shaped conductive carbon material and the solid electrolyte material, so that the interface contact can be improved, the stability of the composite positive electrode can be improved, the cycle life of the battery can be remarkably prolonged, and the requirements of the long-cycle-life solid-state lithium metal battery can be met.

This invention discloses a method for preparing a polymer-coated halide solid electrolyte and a solid-state battery. The method involves dissolving a polymer in an oily solvent to form a solution, then adding the halide solid electrolyte to the solution to form a solid electrolyte suspension. The solid electrolyte suspension is then dried to obtain the polymer-coated halide solid electrolyte. The solid-state battery uses the polymer-coated halide solid electrolyte to prepare the solid electrolyte separator layer. This invention not only effectively leverages the advantages of halide electrolytes but also avoids the problems of deliquescence and difficulty in dehydration during storage and use, effectively solving physical contact issues and improving ion conduction capability. This addresses the problems of poor electrolyte processability, numerous material interfaces, and high large-scale production costs in existing solid-state batteries.