Abstract

Provided in the present invention are a polyacrylic acid or polyacrylate water-based binder, and a preparation method therefor and the use thereof. The polyacrylic acid or polyacrylate water-based binder is a polymer obtained by polymerizing polymeric monomers, the polymeric monomers comprising a hard monomer, a soft monomer and a functional monomer. The polyacrylic acid or polyacrylate water-based binder provided by the present invention has relatively high binding power and relatively good flexibility and electrochemical stability, and has good application prospects in the field of negative electrode sheets of lithium-ion batteries.

IPC Classes  ?

• C09J 133/08 - Homopolymers or copolymers of acrylic acid esters
• C09J 133/10 - Homopolymers or copolymers of methacrylic acid esters
• C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• C08F 220/14 - Methyl esters
• C08F 220/20 - Esters of polyhydric alcohols or phenols
• C08F 222/02 - AcidsMetal salts or ammonium salts thereof
• C08F 218/18 - Diallyl phthalate
• C08F 212/08 - Styrene
• C08F 220/32 - Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals
• C08F 218/08 - Vinyl acetate
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

The present invention provides an electrically-conductive composite water-based binder as well as a preparation method therefor and the use thereof. The electrically-conductive composite water-based binder comprises in parts by weight: 90-100 parts of a polyacrylic acid or polyacrylate water-based binder and 0.1-10 parts of an electrically-conductive filler. By means of introducing the electrically-conductive filler into the binder, the electrically-conductive composite water-based binder for lithium ion batteries which has flexibility, low swelling, good binding force and high conductivity is prepared, so that the binder plays a better role in lithium ion batteries.

IPC Classes  ?

• C09J 133/12 - Homopolymers or copolymers of methyl methacrylate
• C09J 133/10 - Homopolymers or copolymers of methacrylic acid esters
• C08F 220/14 - Methyl esters
• C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• C08F 220/48 - Acrylonitrile with nitrogen-containing monomers
• C08F 220/56 - AcrylamideMethacrylamide
• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• C08F 220/20 - Esters of polyhydric alcohols or phenols
• C08F 220/58 - Amides containing oxygen in addition to the carbonamido oxygen
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

The present invention provides a dispersant, and a conductive slurry and a preparation method therefor and a use thereof. The dispersant comprises any one or a combination of at least two of compounds having a structure represented by formula I. The compounds having the structure represented by formula I each comprise both a polyester chain segment and a polyaniline chain segment, and have a strong adsorption effect on a conductive agent, and also have good affinity to an organic solvent, thereby effectively preventing agglomeration of the conductive agent in the organic solvent and improving the dispersity of the conductive agent in the organic solvent. In this way, the obtained conductive slurry has high conductivity, has both low viscosity and high solid content, and can be applied to lithium ion batteries.

IPC Classes  ?

• C08G 63/91 - Polymers modified by chemical after-treatment
• C08G 63/66 - Polyesters containing oxygen in the form of ether groups
• C08G 63/68 - Polyesters containing atoms other than carbon, hydrogen, and oxygen
• H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
• H01B 13/00 - Apparatus or processes specially adapted for manufacturing conductors or cables
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

A ternary positive electrode slurry and a preparation method therefor and a use thereof. The ternary positive electrode slurry comprises a positive electrode material and an organic solvent, the positive electrode material comprises a ternary positive electrode active substance, a dispersing auxiliary agent, and a conductive agent, and the dispersing auxiliary agent comprises any one or a combination of at least two of compounds having a structure represented by formula I. By selecting the described compounds having the structure represented by formula I to be the dispersing auxiliary agent, the dispersity of the ternary positive electrode active substance and conductive agent in the organic solvent is effectively improved, so that the obtained ternary positive electrode slurry can have both excellent storage stability and excellent conductivity, also has high solid content and low viscosity, and is suitable for being used in lithium ion batteries.

IPC Classes  ?

• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy

Abstract

Provided are a dispersant composition for a positive electrode material, and a preparation method therefor and the use thereof. The dispersant composition for a positive electrode material comprises a combination of a first dispersant, a second dispersant and a third dispersant, wherein the first dispersant is a diblock copolymer of phenylalkyl acrylate and ethylene oxide; the second dispersant is a triblock copolymer of phenylalkyl acrylate, acrylic acid and ethylene oxide; and the third dispersant is alkyl phthalate. The dispersant composition for a positive electrode material can not only solve the technical problem of increased viscosity of a ternary positive electrode slurry due to the overly large surface adsorbability of a conductive agent material during a processing process of the slurry, but can also solve the problems of gelatinization of a polyvinylidene fluoride binder in a slightly alkaline system of the ternary positive electrode slurry and poor flexibility of an electrode sheet during coating and drying processes of the slurry.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 4/04 - Processes of manufacture in general
• H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy

Abstract

The present invention provides a negative electrode binder, and a preparation method therefor and a use thereof. Raw materials for preparing the negative electrode binder comprise a soft monomer, a hard monomer, a urethane bond-containing acrylate monomer, an emulsifier, an initiator and water, and the urethane bond-containing acrylate monomer is prepared by making a small molecule diol monomethyl ether react with diisocyanate and endcapping by means of an acrylate containing terminal hydroxyl. The negative electrode binder has the characteristics of high bonding properties, good flexibility, electrolyte swelling resistance and high temperature stability.

IPC Classes  ?

• C09J 125/14 - Copolymers of styrene with unsaturated esters
• C09J 133/08 - Homopolymers or copolymers of acrylic acid esters
• C08F 212/08 - Styrene
• C08F 2/26 - Emulsion polymerisation with the aid of emulsifying agents anionic
• C08F 2/30 - Emulsion polymerisation with the aid of emulsifying agents non-ionic
• C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• C08F 220/34 - Esters containing nitrogen
• C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

A composite water-based binder and a preparation method therefor, and a lithium-ion battery. The composite water-based binder comprises a PAA water-based binder and organic lithium, and the PAA water-based binder having such a structure is compounded with organic lithium, so that the obtained composite water-based binder has relatively high bonding power, relatively good flexibility, and low swelling property, thereby solving the problems at present of low binding property, poor flexibility, low conductivity and the like of binders for negative electrodes of lithium-ion batteries; in addition, the loss of lithium ions in the charging and discharging process is reduced, so that the binder plays a larger role in lithium-ion batteries.

IPC Classes  ?

• C09J 133/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
• C09J 125/08 - Copolymers of styrene
• C09J 133/08 - Homopolymers or copolymers of acrylic acid esters
• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• C08F 212/08 - Styrene
• C08F 220/10 - Esters
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

Provided in the present invention are a core-shell type lithium-containing polyacrylic water-based adhesive, and a preparation method therefor and the use thereof. The core-shell type lithium-containing polyacrylic water-based adhesive comprises a polymer having a core-shell structure and lithium ions, wherein a polymerization monomer of the polymer having a core-shell structure comprises a basic monomer, an optional first functional monomer, a second functional monomer and a crosslinking monomer. The core-shell type lithium-containing polyacrylic water-based adhesive provided in the present invention has the characteristics of a relatively high adhesive force, relatively good flexibility and a low expansion rate, and making a lithium-ion battery using the adhesive have a high first-time charging and discharging efficiency, and solves the problems of low adhesion, poor flexibility, low first effect, etc., currently present in an adhesive for a negative electrode of a lithium-ion battery.

IPC Classes  ?

• C09J 151/00 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers
• C09J 133/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
• C09J 133/10 - Homopolymers or copolymers of methacrylic acid esters
• C09J 125/08 - Copolymers of styrene
• C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
• C08F 220/06 - Acrylic acidMethacrylic acidMetal salts or ammonium salts thereof
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

124m36n22. The polyether ester structure of the present invention contains an ester group, and adding a plasticizer containing an ester group increases the distance between molecular chains of polymers such as a binder in a battery slurry, such that the interaction force between the molecular chains of the polymers is weakened to different degrees, namely, the Van der Waals force between the molecular chains of the binder is reduced, thereby increasing the flexibility of a positive electrode sheet, and preventing the cracking caused by overlarge adhesive molecule stress during a drying process.

IPC Classes  ?

• C08G 65/28 - Cyclic ethers and hydroxy compounds
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries