Abstract: A sodium ion battery cathode material and its preparation method and application, belonging to the field of sodium ion battery technology. The sodium ion battery cathode material includes a polyanionic iron-manganese core material and a fast ion conductor layer coated on the outer surface of said polyanionic iron-manganese core material; the polyanionic iron-manganese core material contains iron and manganese, and the iron and manganese are non-uniformly distributed within the polyanionic iron-manganese core material; at the center of the polyanionic iron-manganese core material, the manganese content is higher than the iron content; on the surface layer of the polyanionic iron-manganese core material, the iron content is higher than the manganese content. The non-uniform distribution of iron and manganese can effectively mitigate the risk of structural collapse caused by metal ion migration during cycling; the fast ion conductor coating reduces side reactions caused by electrolyte erosion.

Abstract: A free-radical in-situ polymerization semi-solid-state battery includes a positive electrode, a negative electrode and a semi-solid electrolyte. The semi-solid electrolyte is formed through in-situ polymerization by adding a polymerizable monomer, a plasticizer and an initiator into a liquid electrolyte. The polymerizable monomer is a combination of vinylene carbonate (VC) and trimethylene carbonate (TMC) with a mass ratio of 20 to 35:0.1 to 1.5. By optimizing the components of the gel electrolyte, the impedance of the battery is reduced, the performance of the battery is improved, the hardness of the gel electrolyte is enhanced, the solid-solid interface in the battery is benefited, and the safety of the battery is improved.

Abstract: The present invention relates to a secondary battery electrolyte, which includes a composite electrolyte salt; the composite electrolyte salt comprises lithium hexafluorophosphate, lithium difluorosulfonate, and lithium sulfide salts; the lithium sulfide salts include substituted sulfates (R1—SO3—Li) and/or sulfonate structure lithium salts (R2—O—SO3—Li). The present invention employs a combination of LiPF6, lithium sulfide salts, and LiFSI, where LiFSI exhibits better hydrolysis stability, superior thermal stability, and higher lithium migration capability, significantly enhancing the battery's kinetics and high-temperature performance. Lithium sulfates and sulfonate structure lithium salts also possess high lithium migration capabilities. Moreover, their anion groups rich in S and O form films that improve the composition of the SEI film and reduce membrane impedance, thereby enhancing the battery's kinetic and high-temperature performance.

Abstract: A self-repair binder for batteries and its preparation method, which consists of binder, additives, solvent, and self-repair agent. The self-repair agent includes polymer microcapsules, which consist of capsule wall material and repair liquid core material. Additives act as thickeners to improve the viscosity and flowability of the binder, making it easier to apply and coat on the battery surface. The self-repair agent can be encapsulated by polymer microcapsules, allowing it to automatically release the repair binder when the battery suffers minor damage, thus achieving self-repair functionality. Additionally, the repair binder has excellent interfacial bonding with both the binder and the active materials of the cathode and anode, ensuring long-term repair effectiveness.

Abstract: Preparation of a silicon composite material, and a negative electrode plate containing same, relating to the field of silicon-based composite materials. The silicon composite material comprises silicon nanoparticles, carbon nanotubes, silicon oxide, lithium oxide, and lithium metasilicate. The carbon nanotubes and the silicon nanoparticles are dispersed and cross-linked to form a three-dimensional network structure. Silicon oxide, lithium oxide, and lithium metasilicate cover the three-dimensional network structure to form secondary particles. The secondary particles and graphite are homogenized and coated according to a specific particle size ratio to prepare the negative electrode plate containing the silicon composite material and having high-capacity development, good conductivity, high coulombic efficiency, small volume expansion, and high cycling stability.

Abstract: The present invention relates to a composite current collector and its preparation method, electrodes, and batteries. The composite current collector includes an insulating substrate, a first metal layer set on both surfaces of the thickness direction of the insulating substrate, and a second metal layer set on the surface away from the insulating substrate on the first metal layer. Multiple colloidal particles are attached to the surface of the first metal layer away from the insulating substrate, with the colloidal particles evenly distributed. The second metal layer is set on the first metal layer, and the second metal layer encapsulates the evenly distributed colloidal particles. By setting the composite current collector with specific structures of the colloidal particles, it overcomes the issues of low electrode peel strength and capacity drop in long cycle batteries, significantly enhancing the stability of long cycle battery electrodes.

Abstract: A secondary battery positive electrode material, relating to the field of battery materials. The secondary battery positive electrode material comprises large particles with particle size of ?2 ?m and small particles with particle size of ?1 ?m. The surfaces of some of the small particles are provided with a carbon coating layer; and the surfaces of some of the large particles are not provided with a carbon coating layer. According to the positive electrode material, by means of gradation design of the large and small particles, the compaction density is improved. Moreover, the surfaces of the small particles are coated with a carbon layer to provide sufficient electron transport paths. Additionally, the surfaces of the large particles are not hindered by a carbon coating layer, so that the impedance in a charge and discharge process can be reduced.

Abstract: A method and apparatus for displaying a target application across one or more devices is disclosed. The method includes determining a functional module within the target application running on a first device, where the module comprises one or more pages. A transfer parameter and a configuration parameter of the functional module are parsed. The transfer parameter identifies the target device—either the first device or a second device—for display of the module, while the configuration parameter defines display-related information. Based on the transfer parameter, the functional module is selectively transferred to and laid out on the determined target device. The system supports flexible multi-device display scenarios, including fixed, sequential, exclusive, or terminal transfer modes, enabling adaptive rendering of application modules across heterogeneous devices.

Abstract: A top cover for a power battery including a top cover plate, a first post, a first fastener, a second post, a first sealing member, and an insulation plate.

Abstract: A ternary positive electrode material, a method for preparing the same, a positive electrode sheet and a lithium ion battery in which the ternary positive electrode material has a chemical composition of Lia(NixCoyM1-x-y)1-bM?bO2-cAc, wherein 0.75?a?1.2, 0.5?x<1, 0<y?0.1, 0?b?0.01, 0?c?0.2; M is at least one selected from the group consisting of Mn and Al; M? is at least one selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg; A is at least one selected from the group consisting of S, F and N; and 2%?CCo1?CCo, 5%?CAl?CAl1. The lithium ion battery shows better short-term kinetic performances and long-term kinetic performances, and it also exhibits excellent stability in long-term cycles.

Abstract: A semi-solid state battery includes a cell and a gel electrolyte. The cell includes a cathode plate and an anode plate, in which a three-dimensional network structure coating is set on the cathode plate and/or the anode plate. Raw materials for preparing the three-dimensional network structure coating include a fiber material and an initiator. The gel electrolyte is condensed by a reaction of electrolyte precursor solution and the initiator. The electrolyte precursor solution includes a monomer and a cross-linking agent. A semi-solid state battery of this type has low resistance, high specific capacity, and good electrical performance and safety performance.

Abstract: An an energy storage apparatus is provided. the energy storage apparatus includes: a plurality of single batteries and a bipolar plate, each of the plurality of single batteries including a battery cell, the battery cell including a first electrode and a second electrode with opposite polarities and being insulated from each other; the bipolar plate is arranged between two adjacent single batteries, the first electrode or the second electrode of one of the adjacent single batteries forms an electrical connection with the bipolar plate through contacting, and the second electrode or the first electrode of the other of the adjacent single batteries forms an electrical connection with the bipolar plate through contacting.

Abstract: A method for preparing an in-situ polymerized semi-solid state battery, comprising the following steps: assembling: assembling a cathode plate, a separator and an anode plate into a case to form a dummy cell; first injection: injecting a lithium battery liquid electrolyte; aging and formation; second injection: injecting a mixture of polymer monomers, a plasticizer and an initiator, wherein the polymer monomers are a combination of vinylene carbonate and tripropargyl phosphate; aging, and in-situ polymerization at 58-65° C. to form gel, thus obtaining a low impedance semi-solid state battery. The formulation of the second injection comprises a tridimensional monomer, and the liquid electrolyte can be locked in the three-dimensional structure after crosslinking.

Abstract: The present disclosure discloses a high-safety ternary positive electrode material and a method for preparing the same; wherein the ternary positive electrode material has a chemical composition of Lia(NixCoyMn1-x-y)1-bMbO2-cAc, wherein 0.75?a?1.2, 0.75?x<1, 0<y?0.15, 1?x?y>0, 0?b?0.01, 0?c?0.2, M is one or more selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg, and A is one or more selected from the group consisting of S, F and N; and CMn?(1?x?y)?0.07; CCo?y?0.05; 0?[CMn?(1?x?y)]/(CCo?y)?2.0. The ternary positive electrode material of the present disclosure is a high-nickel single crystal material with gradient concentration; it has the advantages of high capacity and high thermal stability, and the preparation method is simple, and is suitable for large-scale production.

Abstract: The top cover structure for a secondary battery includes: an insulating plate, provided with a lower through hole penetrating up and down; a top cover plate located on the top of the insulating plate, provided with an upper through hole interconnected with the lower through hole and penetrating up and down; a conductor, passing through the upper through hole and the lower through hole and fixedly connecting with the top cover plate and the insulating plate, and the conductor is provided with an intersecting hole penetrating through the conductor. An intersecting hole penetrating through the conductor is provided on the conductor, so that the conductor can not only connect and conduct the secondary battery from the outside to the inside of the secondary battery, but also can conveniently inject or replenish liquid into the secondary battery through the intersecting hole, thereby improving the production efficiency of the secondary battery.

Abstract: A current collector has a pore-forming functional coating layer, an electrode sheet and a battery. The current collector having a pore-forming functional coating layer comprises an electrically conductive substrate layer and a functional coating layer applied on at least one surface of the substrate layer, wherein the functional coating layer comprises a gas-generating compound which has a decomposition temperature of 250° C. or less and is capable of producing gas. A compound capable of generating gas by decomposition is applied in the functional layer of the current collector. Hence, through holes extending through the coating layer can be produced by decomposing the pore-forming compound at the bottom of the active coating layer to generate gas with no need to change the existing coating process, thereby improving the kinetic performance of battery products. The method is simple, practicable, cost efficient, suitable for popularization, and has high application value.

Abstract: A ternary positive electrode material, a method for preparing the same, a positive electrode sheet and a lithium ion battery in which the ternary positive electrode material has a chemical composition of Lia(NixCoyM1-x-y)1-bM?bO2-cAc, wherein 0.75?a?1.2, 0.5?x<1, 0<y?0.1, 0?b?0.01, 0?c?0.2; M is at least one selected from the group consisting of Mn and Al; M? is at least one selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg; A is at least one selected from the group consisting of S, F and N; and 2%?CCol?CCo, 5%?CAl?CAll. The lithium ion battery shows better short-term kinetic performances and long-term kinetic performances, and it also exhibits excellent stability in long-term cycles.

Abstract: Preparation of a silicon composite material, and a negative electrode plate containing same, relating to the field of silicon-based composite materials. The silicon composite material comprises silicon nanoparticles, carbon nanotubes, silicon oxide, lithium oxide, and lithium metasilicate. The carbon nanotubes and the silicon nanoparticles are dispersed and cross-linked to form a three-dimensional network structure. Silicon oxide, lithium oxide, and lithium metasilicate cover the three-dimensional network structure to form secondary particles. The secondary particles and graphite are homogenized and coated according to a specific particle size ratio to prepare the negative electrode plate containing the silicon composite material and having high-capacity development, good conductivity, high coulombic efficiency, small volume expansion, and high cycling stability.

Abstract: A battery module comprises a fixing component including a plurality of insertion posts, the insertion posts being sandwiched between a plurality of the cells. Further, the cell is provided with a fillet structure on the edges and the insertion post is connected to the fillet structure. According to the battery module, a plurality of removable reinforcement points are provided by a plurality of insertion posts, which do not affect the stacking density of the cells in the battery pack, and increasing the mechanical connection strength of the battery module. The removable design of the battery module and insertion posts solves the maintenance problem of the integrated battery pack and improves the safety of the battery module, featuring high structural strength, integrity and stability. A battery pack can include the battery module and an electric vehicle can include the battery pack.

Abstract: A safe lithium-ion battery and a manufacturing method therefor in which a positive or negative plate contain a redox shuttle agent. A battery positive electrode material is lithium iron phosphate, or a mixture of lithium iron phosphate and one or more of lithium nickel cobalt manganese oxide, lithium manganate, and lithium cobalt oxide, or a mixture of lithium iron phosphate and one or two of lithium manganese iron phosphate and lithium-rich lithium iron oxide. The lithium iron phosphate accounts for more than 60% (mass ratio). In the manufacturing process of an electrode plate (a positive plate or a negative plate), a redox shuttle agent is added as an additive. The additive can start a redox shuttle reaction at a specific voltage to convert redundant electrical energy into thermal energy; continuous charging can be tolerated under a voltage of 3.8-3.95V, thereby improving safety performance of the battery.