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Non-aqueous electrolyte secondary battery

一种非水电解质、质量的技术，应用在非水电解质蓄电池电极、二次电池、电池电极等方向，能够解决炭导电剂分散不良、不能充分发挥活性物质性能等问题，达到提升输出功率特性的效果

Inactive Publication Date: 2015-12-16
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the electrode produced in this way, there is a problem that the performance of the active material cannot be fully exhibited due to poor dispersion of the carbon conductive agent.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0066] The battery shown in the above detailed description was used.

[0067] The battery thus manufactured is hereinafter referred to as battery A1 of the present invention.

Embodiment 2

[0069] A test cell was produced in the same manner as in Example 1 above, except that polyoxyethylene alkyl ether (LEOCOL SC-70 manufactured by Lion Corporation) was used as the nonionic surfactant.

[0070] The battery thus manufactured is hereinafter referred to as the battery A2 of the present invention.

Embodiment 3

[0072] In addition to using furnace black as carbon conductive agent, LiNi 0.5 co 0.2 mn 0.3 o 2 Except for the positive electrode active material, a test cell was produced in the same manner as in Example 2 above.

[0073] The battery thus manufactured is hereinafter referred to as the battery A3 of the present invention.

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Abstract

An object of the present invention is to provide a non-aqueous electrolyte secondary battery capable of dramatically improving battery characteristics by dramatically improving the dispersibility of a carbon conductive agent and forming a good conductive network, and a method for producing the same. In N-methyl-2-pyrrolidone as a dispersion medium, polyvinylpyrrolidone-based polymers and polyglycerol condensed ricinoleate were mixed as a dispersant, and acetylene black was added thereto to prepare a carbon slurry, and then to the A positive electrode active material and a binder are mixed in the carbon slurry to prepare a positive electrode active material slurry, a positive electrode (11) is manufactured using the positive electrode active material slurry, and a nonaqueous electrolyte secondary battery is manufactured using the positive electrode (11).

Description

technical field [0001] The present invention relates to a carbon slurry and a preparation method thereof, an electrode for a nonaqueous electrolyte secondary battery and a method for producing the same, and a nonaqueous electrolyte secondary battery and a method for producing the same. Background technique [0002] In recent years, the miniaturization and weight reduction of mobile devices such as mobile phones, notebook computers, and PDAs (Personal Digital Assistants) have rapidly progressed. In addition, power consumption has also increased with the multifunctionalization of these products. Water-electrolyte secondary batteries also require more lightweight and high-capacity batteries. [0003] In addition, recently, in order to solve environmental problems caused by exhaust gas emitted from vehicles, the development of a hybrid electric vehicle using a gasoline engine and an electric motor of the vehicle is underway. Currently, nickel-hydrogen storage batteries are used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/13H01M4/139
CPCH01M4/0404H01M4/131H01M4/139H01M4/1391H01M4/622H01M4/624Y10T29/49108Y02E60/10Y02P70/50H01M4/62H01M4/13H01M10/049
Inventor 杉森仁德大北一成喜田佳典
Owner SANYO ELECTRIC CO LTD
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