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Lithium ion battery and electrode material, electrode paste and electrodes of lithium ion battery

A technology of lithium-ion batteries and electrode materials, applied in the field of electrode paste, electrode materials of lithium-ion batteries, electrodes of lithium-ion batteries, and materials of lithium-ion batteries, can solve the problems affecting the first discharge capacity and cycle performance of batteries, and electrode materials Eliminate material drop and other problems, and achieve the effects of good bonding performance, easy dressing, and increased capacity

Active Publication Date: 2011-06-01
SHANGHAI PYLON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of electrode material of lithium-ion battery, and the electrode slurry, electrode and lithium-ion battery that adopt this electrode material, can solve the problem that the electrode material of the prior art still exists in the battery electrode preparation and use process. The serious material drop affects the first discharge capacity and cycle performance of the battery

Method used

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  • Lithium ion battery and electrode material, electrode paste and electrodes of lithium ion battery
  • Lithium ion battery and electrode material, electrode paste and electrodes of lithium ion battery
  • Lithium ion battery and electrode material, electrode paste and electrodes of lithium ion battery

Examples

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Embodiment 1

[0029] (1) Preparation of positive electrode

[0030] Dissolve 1.5g of sodium carboxymethylcellulose (CMC) in 98.5ml of water (solution concentration: 1.5%), then dissolve 1.5g of squid gum in the above CMC aqueous solution, and add 100g of LiCoO- 2- (FMC company product) and 2g of conductive agent carbon black, stirred for 2 hours, then added 3g of styrene-butadiene latex (SBR), and stirred for 0.5 hours with a common four-blade paddle, and then obtained the positive electrode slurry (LiCoO- 2 : CMC: Squat Gum: SBR: Carbon Black: Deionized Water = 100: 1.5: 1.5: 3: 2: 98.5).

[0031] The positive electrode slurry was evenly coated on aluminum foil, dried at 125° C. for 1 hour, then rolled, and cut into 424×44 mm positive electrode sheets, each containing 6.2 g of positive electrode active materials.

[0032] (2) Preparation of negative electrode

[0033] Dissolve 1.5g of sodium carboxymethylcellulose (CMC) in 98.5ml of water (solution concentration: 1.5%), then dissolve 1.5...

Embodiment 2

[0038] The same method and steps as in Example 1 were used to prepare the positive electrode, negative electrode and battery, except that 0.5 g of squash gum, 1.5 g of sodium carboxymethyl cellulose, and 3 g of styrene-butadiene latex were added.

Embodiment 3

[0040] The positive electrode, negative electrode and battery were prepared by the same method and steps as in Example 1, except that 3 g of squash gum, 1.5 g of sodium carboxymethyl cellulose, and 3 g of styrene-butadiene latex were added.

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Abstract

The invention discloses an electrode material of a lithium ion battery, comprises an electrode active material and a binder, wherein the binder comprises sesbania gum phosphate, carboxymethyl sesbania gum, ethoxyl-sesbania gum or oxidation sesbania gum. The invention also discloses an electrode paste of the lithium ion battery, comprising the electrode material of the lithium ion battery and a solvent, wherein the electrode material of the lithium ion battery is the electrode material of the lithium ion battery. The invention also discloses electrodes of the lithium ion battery, which are prepared by coating the electrode paste of the lithium ion battery on the polar electrics of the electrode, and drying and rolling. The invention discloses the lithium ion battery, comprising a battery shell, an electrode assembly and electrolyte, wherein the electrode assembly and the electrolyte are sealed in the battery shell; the electrode assembly comprises a positive pole, a negative pole and a membrane between the positive pole and the negative pole; and the positive pole and / or the negative pole are the electrodes of the lithium ion battery. According to the invention, the capacity, the rate discharge performance and the cycle performance of the battery are improved.

Description

technical field [0001] The invention relates to a lithium ion battery material, in particular to an electrode material and an electrode slurry for the lithium ion battery. The invention also relates to an electrode of a lithium ion battery. The invention also relates to a lithium ion battery. Background technique [0002] The lithium-ion secondary battery is a lithium-ion battery composed of two compounds that can reversibly intercalate and deintercalate lithium ions as negative electrodes. Because of its high specific energy, high operating voltage, wide operating temperature range, low self-discharge rate, long cycle life, no pollution, light weight, and good safety, it has a wide range of applications. [0003] As the core component of lithium-ion batteries, battery electrodes have higher and higher performance requirements. Battery electrodes generally include electrode active materials and the bonding between electrode active material particles and particles and betwe...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/13H01M10/0525
CPCY02E60/12Y02E60/122Y02E60/10
Inventor 杨标朱广焱
Owner SHANGHAI PYLON TECH CO LTD
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