Abstract: A method for making a cathode composite material is disclosed. In the method, a maleimide-based material is provided. The maleimide-based material is a maleimide monomer, a maleimide polymer formed from the maleimide monomer, or combinations thereof. The maleimide-based material, an inorganic electrical conductive carbonaceous material, and a cathode active material are mixed to form a mixture. The mixture is heated to a temperature of about 200° C. to about 280° C. in a protective gas to obtain the cathode composite material. A cathode composite material and a lithium ion battery are also disclosed.

Abstract: A lithium metal electrode includes a lithium metal plate and a protective layer coated on a surface of the lithium metal plate. The protective layer includes an organic-inorganic hybrid polymer comprising a repeating unit. The repeating unit includes a silicon atom, a methacryloyloxy group or an acryloyloxy group, and at least two alkoxy groups. The alkoxy groups and the methacryloyloxy group or the acryloyloxy group are respectively joined to the silicon atom. A method for preparing the lithium metal electrode and a lithium ion battery is also disclosed.

Abstract: A composite binder includes an organic-inorganic hybrid polymer and a fluorinated binder uniformly mixed with each other. A repeating unit of the organic-inorganic hybrid polymer includes a silicon atom, a methacryloyloxy group, or an acryloyloxy group, and at least two alkoxy groups. The alkoxy groups and the methacryloyloxy group or the acryloyloxy group are respectively joined to the silicon atom. A method for making a cathode electrode and the cathode electrode are also disclosed.

Abstract: A powder sintering device is disclosed. The powder sintering device includes a support unit, an actuator unit located on the support unit, a sintering unit, and a reaction unit. The reaction unit is located inside of the sintering unit and heated by the sintering unit. The reaction unit is fixed to the actuator unit and driven to rotate by the actuator unit.

Abstract: An automatic weighing and sorting apparatus for battery electrode sheets is provided. The automatic weighing and sorting apparatus includes a conveying device, a weighing device, and a sorting device. The conveying device is configured to transfer a number of battery electrode sheets to the weighing device. The weighing device is configured to get a weight of each of the number of battery electrode sheets. The sorting device is configured to sort the number of battery electrode sheets based on the weight of each of the number of battery electrode sheets.

Abstract: An electrode binder, a cathode electrode material, and a lithium ion battery are disclosed. The electrode binder includes a polymer obtained by polymerizing a dianhydride monomer with a diamine monomer. The cathode electrode material includes a cathode active material, a conducting agent, and the electrode binder. The lithium ion battery includes an anode electrode, an electrolyte, a separator, and the cathode electrode, the cathode electrode comprising a cathode active material, a conducting agent, and the electrode binder.

Abstract: An anode binder, a cathode electrode material, and a lithium ion battery are disclosed. The anode binder includes a polymer obtained by polymerizing a dianhydride monomer with a diamine monomer. The anode electrode material includes an anode active material, a conducting agent, and the anode binder. The lithium ion battery includes an anode electrode, an electrolyte, a separator, and the cathode electrode, the cathode electrode comprising a cathode active material, a conducting agent, and the anode binder.

Abstract: A lithium ion battery includes an anode electrode, an electrolyte, a separator, and a cathode electrode. The cathode electrode includes a cathode active material, a conducting agent, and a cathode binder. The cathode binder includes a polymer obtained by polymerizing a maleimide type monomer with an organic diamine type compound.

Abstract: A method for carbon coating on an electrode active material of a lithium ion battery is disclosed. The method comprises mixing a plurality of electrode active material particles, a carbon source, and a first solvent to obtain a first mixture liquid; heating the first mixture liquid at a temperature from about 130° C. to about 240° C. under a pressure from about 0.2 MPa to about 30 MPa to obtain a plurality of carbon source coated electrode active material particles; separating the plurality of carbon source coated electrode active material particles from the first mixture liquid; and sintering the plurality of carbon source coated electrode active material particles to obtain a plurality of carbon coated electrode active material particles.

Abstract: An anode binder includes a polymer obtained by polymerizing a maleimide type monomer with an organic diamine type compound. A lithium ion battery includes an anode electrode, an electrolyte, a separator, and an anode electrode. The anode electrode includes an anode active material, a conducting agent, and the anode binder.

Abstract: A method for preparing sulfur-based cathode material is disclosed. First, polyacrylonitrile and sulfur according to a proportion are dissolved in a first solvent at a first temperature to obtain a first solution. Second, the first solution is transferred into a second solvent at a second temperature, to precipitate the polyacrylonitrile and sulfur to form a precipitated material. Third, the precipitated material is filtered and heated to produce a sulfurized polyacrylonitrile.

Abstract: A method for carbon coating on an electrode active material of a lithium ion battery is disclosed. The method comprises carrying out a liquid phase reaction of an electrode active material precursor in a first solvent, thereby obtaining a first mixture liquid comprising the first solvent, and a plurality of electrode active material particles dispersed in the first solvent; adding a carbon source into the first mixture liquid, thereby obtaining a second mixture liquid; drying the second mixture liquid, thereby obtaining a plurality of carbon source coated electrode active material particles; and sintering the plurality of carbon source coated electrode active material particles, thereby obtaining a plurality of carbon coated electrode active material particles.

Abstract: A powder sintering device is disclosed. The powder sintering device includes a furnace body, a first heating device, and a vibration device. The furnace body includes a bottom wall and a side wall cooperatively defining a reaction chamber. The first heating device is located outside the furnace body, and configured to heat the furnace body. The vibration device is located outside the furnace body, and configured to vibrate the furnace body.

Abstract: A centrifugal separation apparatus is disclosed. The centrifugal separation apparatus comprises a rotary drum, wherein an inlet opening and an outlet opening are respectively defined on opposite ends of the rotary drum along a central axis of the rotary drum. A fixing rod is disposed on the central axis, a baffle plate is disposed on the fixing rod, and a distance from each point on an edge of the baffle plate to the central axis is greater than a radius of the outlet opening.

Abstract: A safe additive for a lithium ion battery is disclosed. The safe additive comprises a maleimide type monomer and an enediyne type compound. The maleimide type monomer comprises at least one of a maleimide monomer, a bismaleimide monomer, a multimaleimide monomer and a maleimide type derivative monomer. An electrolyte liquid and a lithium ion battery containing the safe additive are also disclosed.

Abstract: A powder sintering system is disclosed. The powder sintering system includes a furnace body, a first dispersing device, a second dispersing device, and a heating device. The furnace body includes a bottom and a side wall defines a funnel shaped chamber. The at least one first dispersing device is located on the bottom, and configured to centrifugally disperse and throw powder from the bottom to the side wall. The at least one second dispersing device is located on the side wall, and configured to centrifugally disperse and throw the powder from the side wall to a center of the funnel shaped chamber. The heating device is located outside the furnace body.

Abstract: A method for managing capacity of lithium ion battery is disclosed. A warning capacity D or C is preset for a discharge process or a charge process. Two anode active materials are mixed and used to form a lithium ion battery. The lithium ion battery is discharged or charged, during which the voltage of the battery is monitored. When the voltage of the lithium ion battery is in a range, a warning is generated for a remaining discharge capacity of the first lithium ion battery reaching the warning capacity D, or a charging capacity of the lithium ion battery reaching the warning capacity C.

Abstract: A method for making a composite separator is disclosed. In the method, a liquid dispersion of single ion nanoconductors is prepared. The liquid dispersion of the single ion nanoconductors is uniformly mixed with a polymer to form a film casting solution. The film casting solution is applied to a surface of a porous film.

Abstract: A method for making a single ion nanoconductor is disclosed. In the method, a solution of nano sol is formed through a hydrolysis reaction. A silane coupling agent is added in the solution of nano sol, and heated in a protective gas to have a reaction thereby obtaining a solution of C?C group grafted nano sol. A methyl methacrylate monomer, an acrylic acid monomer, and an initiator are added to the solution of C?C group grafted nano sol, and heated to have a reaction thereby forming a nano sol-P(AA -MMA) composite. The nano sol-P(AA-MMA) composite is heated at an elevated pressure in a liquid phase medium to obtain a dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite. The dehydroxy crystalline oxide nanoparticle-P(AA-MMA) composite and lithium hydroxide are mixed and heated in an organic solvent to obtain the liquid dispersion of single ion nanoconductors.

Abstract: A powder sintering system is disclosed. The powder sintering system includes a furnace body, at least one first dispersing device, at least one second dispersing device, a heating device, and a gas introducing device. The furnace body includes a bottom and a side wall defines a funnel shaped chamber. The at least one first dispersing device is located on the bottom of the furnace body, and disperses powder from the bottom of the furnace body to the side wall of the furnace body. The at least one second dispersing device is located on the side wall of the furnace body, and centrifugally disperse powder from the side wall of the furnace body to a center of the funnel shaped chamber. The heating device is located outside the furnace body. The gas introducing device supplies a protecting gas into the funnel shaped chamber.