6results about How to "Achieve high capacity" patented technology

The invention relates to the field of batteries, and provides a battery monomer and a preparation method thereof, a battery device, a power utilization device and an energy storage device, the battery monomer comprises a battery cell assembly, the battery cell assembly is formed by laminating or winding a positive plate, a solid electrolyte membrane and a negative plate; the shell is provided with an accommodating space, and the battery cell assembly is positioned in the accommodating space; the solid electrolyte membrane comprises a core conduction layer, an interface enhancement layer and a mechanical support layer, wherein the core conduction layer is made of a metal organic framework material. According to the MOF composite electrolyte membrane based on electric field induced oriented growth, a multi-layer collaborative design concept is adopted, and an integrated electrolyte system with high ionic conductivity, excellent mechanical performance and interface stability is constructed through precise combination of the lithium ion conductive MOF membrane body, the interface enhancement layer and the mechanical supporting layer. All the layers form an integral structure through interface chemical bonding and physical compounding, and function collaboration and performance optimization are achieved.

The invention relates to the field of batteries, and provides a battery monomer and a preparation method thereof, a battery device, a power utilization device and an energy storage device.The preparation method of the battery monomer comprises the steps that a battery cell assembly is provided, and the battery cell assembly is formed by laminating or winding a positive plate, a diaphragm and a negative plate; providing a shell, and placing the battery cell assembly in the shell; providing an electrolyte, and injecting the electrolyte into the shell; carrying out a formation step; the positive plate comprises a positive active component, the positive active component comprises a modified MXene material, and the modified MXene material comprises an MXene matrix and an Al2O3 / AlF3 gradient coating layer coating the MXene matrix. And the electrochemical stability, the cycle life and the safety performance are remarkably improved at least on the basis of keeping the high conductivity of the material.

This application relates to the field of batteries, providing a battery cell and its preparation method, a battery device, an electrical device, and an energy storage device. The preparation method of the battery cell includes: providing a cell assembly, wherein the cell assembly is formed by stacking or winding a positive electrode sheet, a separator, and a negative electrode sheet; providing a housing, and placing the cell assembly inside the housing; providing an electrolyte and injecting the electrolyte into the housing; and performing a formation step; wherein the negative electrode sheet includes a current collector, a negative electrode active material, a conductive agent, and a binder, and the binder includes a functional polymer, wherein the functional polymer is formed by chemically bonding a first reaction unit, a second reaction unit, and a third reaction unit to form a molecular network structure. This application can significantly improve the cycle life of the negative electrode, significantly improve the cycle stability and structural integrity of the silicon negative electrode, and provide effective technical support for the practical application of high-capacity lithium-ion batteries.

The invention provides a battery monomer and a manufacturing method thereof, a battery device, a power utilization device and an energy storage device, and the manufacturing method of the battery monomer comprises the following steps: providing a substrate, and depositing h-BN on the substrate; performing fluorination treatment on the h-BN so as to enable B atoms and F atoms in the h-BN to form B-F covalent bonds; the h-BN is peeled off from the substrate, and fluorinated h-BN is obtained; preparing a first electrolyte, wherein the first electrolyte comprises a lithium salt, an additive, a diluent and a solvent; the fluorinated h-BN is dispersed into the first electrolyte, a second electrolyte is obtained, and the second electrolyte comprises lithium nitrate; providing a positive electrode plate, a negative electrode plate and a diaphragm, sequentially laminating the positive electrode plate, the diaphragm and the negative electrode plate, carrying out winding treatment or lamination treatment, and putting into a shell; and injecting the second electrolyte into the shell and carrying out a formation process to obtain a battery monomer. And the performance of the battery monomer is improved at least.

The application provides a battery monomer and a manufacturing method thereof, a battery device, a power utilization device and an energy storage device. The manufacturing method of the battery monomer comprises the following steps: preparing a polymer electrolyte film; sequentially stacking a positive electrode sheet, the polymer electrolyte film and a negative electrode sheet, and then putting the stacked sheet or the wound sheet into a shell after a stacking treatment or a winding treatment to obtain an initial battery cell; and performing a formation process on the initial battery cell to obtain the battery monomer. By combining a phosphazene skeleton with intrinsic flame-retardant characteristics and reversible borate dynamic covalent bonds, and by synergistically introducing ionic liquids and inorganic fast ion conductors, a multifunctional polymer electrolyte system with self-repairing capability, high ionic conductivity, excellent electrochemical stability and intrinsic flame retardancy is constructed, so that the following effects can be achieved simultaneously: significant improvement of room temperature conductivity, self-repairing after damage, effective widening of an electrochemical window and fundamental improvement of safety performance, thereby providing key material support for the practicalization of high-performance solid-state batteries.

The invention relates to the field of batteries, and provides a battery monomer and a preparation method thereof, a battery device, a power utilization device and an energy storage device.The preparation method of the battery monomer comprises the steps that a battery cell assembly is provided, and the battery cell assembly is formed by laminating or winding a positive plate, a diaphragm and a negative plate; providing a shell, and placing the battery cell assembly in the shell; providing an electrolyte, and injecting the electrolyte into the shell; carrying out a formation step; the electrolyte contains a difunctional additive, the molecular formula of the difunctional additive is shown in the specification, R1 is an electron withdrawing group, and R2 is an electrochemical controllable decomposition group. The invention is at least beneficial to solving the key technical problems of slow electron transmission, large ion diffusion impedance, aggravated interface side reaction and the like in the lithium iron phosphate fast charging battery.