A kind of preparation method of nickel-based high-energy secondary battery negative electrode slurry

Abstract

The invention relates to a method for preparing a negative electrode slurry of a nickel-based high-energy secondary battery. The preparation method of negative electrode slurry according to the present invention adds hydrogen storage alloy and negative electrode auxiliary agent step by step, which is conducive to stirring and dispersing materials in the binder, can effectively solve the caking phenomenon that cannot be solved by equipment, and improve the efficiency of each batch. Consistency of slurry.

Description

technical field

[0001] The invention relates to the manufacture of a nickel-based secondary battery, in particular to a method for manufacturing the negative electrode slurry of a nickel-based high-energy secondary battery. Background technique

[0002] In the battery production process, ingredients are one of the key steps. The batching process is to mix the various components in the slurry together according to a certain ratio, and after the slurry is prepared, it is evenly coated on the current collector, so as to ensure the consistency of the electrode plate. The key control points of ingredients are stirring time and speed, dispersion time and speed, type and dosage of electrode materials; in current industrial production, there is no effective method to control the consistency of each barrel of slurry, so it can be seen that the currently used Conventional anode compounding methods need to be further improved. Contents of the invention

[0003] The purpose of the p...

Examples

Embodiment 1

[0016] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 90%, negative electrode auxiliary agent 10%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 85.5%, activated carbon 1%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 12%; wherein, the binder is HPMC (hydroxy The aqueous solution of propyl methylcellulose) powder material, its mass percent is 3%; Wherein, the raw material of described negative electrode auxiliary agent is manganese dioxide.

[0017] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the slurry, comprises the following steps:

[0018] a). Prepare the adhesive: weigh the HPMC powder and dis...

Embodiment 2

[0026] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 95%, negative electrode auxiliary agent 5%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 87.5%, activated carbon 3%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 8%; wherein, the binder is HPMC (hydroxy The aqueous solution of propyl methylcellulose) powder, its mass percent is 1.5%; Wherein, the raw material of described negative electrode auxiliary agent is the homogeneous mixture of graphite fluoride, cobalt oxide, nickel oxide, nickel powder.

[0027] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the slurry, comprises the following steps:

[...

Embodiment 3

[0036] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 93%, negative electrode auxiliary agent 7%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 92.5%, activated carbon 2%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 4%; wherein, the binder is HPMC (hydroxyl Propyl methyl cellulose) powder in aqueous solution, its mass percentage is 2%; Wherein, the raw material of described negative electrode auxiliary agent is manganese dioxide, graphite fluoride, cobalt oxide, nickel oxide, nickel powder, graphene, carbon Homogeneous mixture of nanotubes.

[0037] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the ...

technical field

[0001] The invention relates to the manufacture of a nickel-based secondary battery, in particular to a method for manufacturing the negative electrode slurry of a nickel-based high-energy secondary battery. Background technique

[0002] In the battery production process, ingredients are one of the key steps. The batching process is to mix the various components in the slurry together according to a certain ratio, and after the slurry is prepared, it is evenly coated on the current collector, so as to ensure the consistency of the electrode plate. The key control points of ingredients are stirring time and speed, dispersion time and speed, type and dosage of electrode materials; in current industrial production, there is no effective method to control the consistency of each barrel of slurry, so it can be seen that the currently used Conventional anode compounding methods need to be further improved. Contents of the invention

[0003] The purpose of the p...

Examples

Embodiment 1

[0016] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 90%, negative electrode auxiliary agent 10%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 85.5%, activated carbon 1%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 12%; wherein, the binder is HPMC (hydroxy The aqueous solution of propyl methylcellulose) powder material, its mass percent is 3%; Wherein, the raw material of described negative electrode auxiliary agent is manganese dioxide.

[0017] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the slurry, comprises the following steps:

[0018] a). Prepare the adhesive: weigh the HPMC powder and dis...

Embodiment 2

[0026] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 95%, negative electrode auxiliary agent 5%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 87.5%, activated carbon 3%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 8%; wherein, the binder is HPMC (hydroxy The aqueous solution of propyl methylcellulose) powder, its mass percent is 1.5%; Wherein, the raw material of described negative electrode auxiliary agent is the homogeneous mixture of graphite fluoride, cobalt oxide, nickel oxide, nickel powder.

[0027] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the slurry, comprises the following steps:

[...

Embodiment 3

[0036] A nickel-based high-energy secondary battery negative electrode slurry, including negative electrode slurry main material and negative electrode auxiliary agent, and their weight percentage is: negative electrode slurry main material 93%, negative electrode auxiliary agent 7%; wherein, the negative electrode slurry The raw material composition and weight percentage of the main material are: hydrogen storage alloy 92.5%, activated carbon 2%, PTFE (polytetrafluoroethylene emulsion) 1.5%, binder 4%; wherein, the binder is HPMC (hydroxyl Propyl methyl cellulose) powder in aqueous solution, its mass percentage is 2%; Wherein, the raw material of described negative electrode auxiliary agent is manganese dioxide, graphite fluoride, cobalt oxide, nickel oxide, nickel powder, graphene, carbon Homogeneous mixture of nanotubes.

[0037] The method for making the negative electrode slurry of the nickel-based high-energy secondary battery, based on the preparation of one ton of the ...