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Electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for manufacturing the same

A non-aqueous electrolyte and secondary battery technology, which is applied in the direction of non-aqueous electrolyte battery electrodes, electrolyte battery manufacturing, non-aqueous electrolyte batteries, etc., to achieve excellent load characteristics and excellent charge-discharge cycle characteristics.

Active Publication Date: 2013-09-18
MAXELL HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, even non-aqueous electrolyte secondary batteries with improved safety and reliability (especially safety and reliability at high temperatures) as described above are expected to further increase their requirements due to higher performance of applicable equipment in the future. Load characteristics, charge-discharge cycle characteristics, and productivity must also be improved, and the technology described in Japanese Patent Laid-Open No. 2010-170770 still has room for improvement in this regard

Method used

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  • Electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for manufacturing the same
  • Electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for manufacturing the same
  • Electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for manufacturing the same

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Embodiment approach 1

[0021] First, the electrode for a nonaqueous electrolyte secondary battery and the nonaqueous electrolyte secondary battery of the present invention will be described.

[0022] The electrode for a nonaqueous electrolyte secondary battery of the present invention is an electrode for a nonaqueous electrolyte secondary battery comprising a mixture layer containing an active material and a porous insulating layer, wherein the insulating layer is formed on the mixture layer, and the The insulating layer includes a resin having a crosslinked structure and inorganic particles, and has a mixed layer containing components of the insulating layer and components of the mixture layer at an interface between the insulating layer and the mixture layer.

[0023] The first aspect of the non-aqueous electrolyte secondary battery of the present invention is characterized in that it comprises a positive electrode having a material mixture layer containing a positive electrode active material, a n...

Embodiment approach 2

[0103] Next, a method for manufacturing the nonaqueous electrolyte secondary battery of the present invention will be described.

[0104] The 1st form of the manufacture method of the nonaqueous electrolyte secondary battery of the present invention is to have the positive electrode that has the mixture layer that contains positive electrode active material, the negative electrode that has the mixture layer that contains negative electrode active material, insulating layer and nonaqueous electrolyte. A method for producing an electrolyte secondary battery, comprising the step of producing an insulating layer-forming composition comprising oligomers and monomers capable of being polymerized by irradiation with energy rays, inorganic particles, a hot-melt resin, and a solvent the step of forming a coating film by applying the composition for forming an insulating layer on the mixture layer of at least one electrode selected from the positive electrode and the negative electrode; ...

Embodiment 1）

[0125]

[0126] The following materials were added to the container in the following proportions, and stirred for 12 hours to prepare a mixed solution.

[0127] (1) Boehmite (inorganic particles, average particle size: 0.6 μm): 21.10 parts by mass

[0128] (2) Polyethylene microparticles (hot-melt resin particles, melting point: 120°C): 3.54 parts by mass

[0129] (3) Urethane acrylate (polymerizable oligomer, "EBECRYL8405" manufactured by Daicel-Cytec): 6.26 parts by mass

[0130] (4) Tripropylene glycol diacrylate (polymerizable monomer): 1.56 parts by mass

[0131] (5) Methyl ethyl ketone (low boiling point solvent, boiling point: about 79.6°C, polarity parameter: 4.7): 48.46 parts by mass

[0132] (6) Water: 14.16 parts by mass

[0133] (7) Ethylene glycol (high boiling point solvent, boiling point: about 197.9°C): 4.69 parts by mass

[0134] (8) Zirconia beads (diameter: 1.5mm): 50% of the coating volume

[0135] Next, 0.23 parts by mass of 2,4,6-trimethylbenzoyl-d...

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Abstract

The present invention relates to an electrode for a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery using the electrode, and a method for manufacturing the non-aqueous electrolyte secondary battery. The electrode for a non-aqueous electrolyte secondary battery includes a material mixture layer containing an active material and a porous insulating layer. The insulating layer is formed on the material mixture layer. The insulating layer contains a resin having a cross-linked structure and inorganic particles. A mixed layer that includes components of the insulating layer and components of the material mixture layer is provided at the interface between the insulating layer and the material mixture layer.

Description

technical field [0001] The present invention relates to an electrode for a nonaqueous electrolyte secondary battery that can be easily produced and has excellent load characteristics and charge-discharge cycle characteristics, a nonaqueous electrolyte secondary battery using the same, and a method for manufacturing the nonaqueous electrolyte secondary battery. Background technique [0002] Non-aqueous electrolyte secondary batteries such as lithium-ion secondary batteries are widely used as power sources for portable devices such as mobile phones and notebook personal computers due to their high energy density. Features and safety have become important issues. [0003] In current lithium ion secondary batteries, a polyolefin-based porous film having a thickness of, for example, about 10 to 30 μm is used as a separator interposed between the positive electrode and the negative electrode. However, in the production of such a polyolefin-based porous film, in order to open fine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/13H01M10/0525H01M10/058H01M50/463
CPCH01M10/052H01M10/4235Y02E60/10H01M50/446H01M50/46Y02P70/50H01M4/13H01M10/05H01M4/134H01M4/133H01M4/139
Inventor 渡边利幸小山邦彦古谷隆博儿岛映理
Owner MAXELL HLDG LTD
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