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Electrode for electricity storage device, slurry for electrode, binder composition for electrode, and electricity storage device

A technology of storage equipment and binder, which is applied in the direction of non-aqueous electrolyte battery electrodes, battery electrodes, electrode collector coatings, etc., and can solve the problems of immobilization, reduction of adhesion between collectors and active material layers, etc. , to achieve the effects of good adhesion, good charge and discharge rate characteristics, and excellent powder shedding

Inactive Publication Date: 2013-12-18
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, when the above-mentioned water is evaporated, there is a problem that the polymer component contained in the water-based slurry is localized and immobilized.
For example, when the amount of the polymer component in the interface between the current collector and the active material layer is relatively reduced, the adhesion between the current collector and the active material layer is significantly reduced

Method used

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  • Electrode for electricity storage device, slurry for electrode, binder composition for electrode, and electricity storage device
  • Electrode for electricity storage device, slurry for electrode, binder composition for electrode, and electricity storage device
  • Electrode for electricity storage device, slurry for electrode, binder composition for electrode, and electricity storage device

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Embodiment Construction

[0038] Hereinafter, preferred embodiments of the present invention will be described in detail. In addition, this invention is not limited to the following embodiment, Various modification examples implemented in the range which do not change the gist of this invention are included.

[0039] 1. Electrodes for electrical storage devices

[0040] figure 1 It is a sectional view schematically showing the electrode for electrical storage devices of this embodiment. Such as figure 1 As shown, the electrode 100 for an electrical storage device includes a current collector 10 and an active material layer 20 formed on the surface of the current collector 10 .

[0041] The shape of the current collector 10 is not particularly limited, and generally a sheet-like material with a thickness of about 0.001 to 0.5 mm is used. Current collector 10 is not particularly limited as long as it is made of a conductive material. In the case of a lithium ion secondary battery, metal foils such a...

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Abstract

An electrode for an electricity storage device pertaining to this invention comprises a collector and an active material layer formed on the surface of the collector, and is characterized by: the active material layer including at least a polymer and an active material; the polymer distribution coefficient for the active material layer being 0.6-1.0; and the density of the active material layer being 1.3-1.8 g / cm3.

Description

technical field [0001] The present invention relates to an electrode for an electrical storage device, a slurry for an electrode for producing the electrode, a binder composition for an electrode for producing the slurry, and an electrical storage device including the electrode. Background technique [0002] In recent years, power storage devices having high voltage and high energy density are required as power sources for driving electronic devices. In particular, lithium ion batteries and lithium ion capacitors are expected as electrical storage devices having high voltage and high energy density. [0003] An electrode for an electrical storage device used in such an electrical storage device is produced by applying and drying a mixture of polymer particles and active material particles on the surface of a current collector. As the characteristics required for such polymer particles, there are bonding between the active material particles and the binding ability between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01G11/30H01G11/48H01M4/139H01M4/62H01M4/02H01M4/04H01M4/134H01M4/1395
CPCH01G11/30H01M4/0404H01M4/043H01M4/0473H01M4/139H01M10/0525H01G11/38H01M4/622Y02E60/10H01M4/13H01M10/05H01G11/22Y02E60/13
Inventor 梶原一郎小濑修本多达朗
Owner JSR CORPORATIOON
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