Abstract

A new type of battery electrode plate preparation method is described. The method can include the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The method can adopt the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body. The electrode plate can have a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the method can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and others.

IPC Classes  ?

• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/04 - Processes of manufacture in general
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
• H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/1391 - Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• H01M 4/1393 - Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/21 - Drying of pasted electrodes
• H01M 4/50 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
• H01M 4/52 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

The objective of the present invention is to provide a new type battery electrode plate preparation method, comprising the following steps: a) a mixing process; b) a milling and polishing process; c) an extrusion shearing and extending process; d) cutting to obtain an electrode membrane; and e) pressing at a high temperature and a high pressure to obtain a battery electrode plate. The invention adopts the active material of different electrochemical batteries as the main body to prepare a thick type battery electrode plate with a high conductivity, a high capacity and a high active material loading, which has a viscoelastic body; this electrode plate has a flexible organic network structure and an excellent mechanical strength, and can still exist in a variety of electrolytes after hundreds of times or even thousands of times of deep charge and discharge cycles. The thick electrode plate prepared by using the present invention can be applied to a variety of batteries such as lead-acid battery positive and negative electrode plates, a lead carbon battery electrode plate, a lithium ion battery electrode plate, a supercapacitor electrode plate, a Ni-MH battery electrode plate, and so on.

IPC Classes  ?

• H01M 4/04 - Processes of manufacture in general
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes

Abstract

A method for preparing a boron-doped porous carbon sphere, the method comprising the following steps: 1) dissolving a sugar carbon source and a boric acid in water at a certain proportion, mixing and stirring the mixture to obtain a transparent solution; 2) adding a silicon-based pore forming agent to form a precursor solution of a boron-doped porous carbon sphere; 3) spray drying (aerosol-assisted) the resulting precursor to obtain a solid precursor particle of the boron-doped carbon sphere; 4) pyrolyzing the resulting solid particle at a high temperature in an inert atmosphere to obtain a mixture in which a pore template SiO2 is embedded in a boron-doped carbon sphere; and 5) removing the silicon-based pore forming agent from the mixture and drying to obtain the boron-doped porous carbon sphere. The present invention solves the problems in existing boron-doped carbon material technologies wherein the raw material cost is high, the preparation process is complicated, the boron doping amount is low and scalable industrial production is difficult to achieve. The present invention provides an alternative material for lithium ion batteries that is superior to the commercial graphite.

IPC Classes  ?

• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids

Abstract

Provided are a high-conductivity doped oxide and a use thereof as a battery polar plate additive. Tungsten oxide or molybdenum oxide is used as a precursor, and a controllable metal doping is performed on same such that an oxide material, which has a high conductivity, a high hydrogen evolution potential and a high oxygen evolution potential and can be stably present in a sulfuric acid solution, is formed therefrom. This material can be used as an additive material for the positive electrode and negative electrode of a battery, can effectively decrease the internal resistance of the electrode, improve active material utilization and charge-discharge rate, and at the same time, can stabilize the electrode structure and improve the cycle service life.

IPC Classes  ?

• H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides