Aluminum alloy hard foil for battery collector

A technology of battery collection and aluminum alloy, which is applied in the direction of battery electrodes, electrode carriers/current collectors, secondary batteries, etc., can solve the problems of production line stop, foil breakage, etc. excellent effect

Active Publication Date: 2011-04-27
KOBE STEEL LTD
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in processes such as crimping and cutting on the electrode material production line, even if t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aluminum alloy hard foil for battery collector
  • Aluminum alloy hard foil for battery collector
  • Aluminum alloy hard foil for battery collector

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0072]

[0073] First, an example of an aluminum alloy foil manufactured through a single rolling is illustrated.

[0074] (For sample production)

[0075] (Example No. 1 to 10, Comparative Example No. 11 to 19)

[0076] The aluminum alloy with the composition shown in Table 1 was melted and cast to form an ingot, and after face milling the ingot, a homogenization heat treatment was performed at 540°C for 4 hours. The homogenized ingot is hot-rolled, cold-rolled, and then an intermediate annealing is performed. After that, cold rolling was performed under the conditions of foil rolling by single rolling until a part of it was removed to a thickness of 15 μm, and it became an aluminum alloy foil. The conditions of the intermediate annealing were a continuous annealing furnace, an annealing temperature of 450°C, a heating rate of 10°C / sec, a cooling rate of 20°C / sec, and a holding time of 5 seconds. The thickness of the plate (foil texture) after hot rolling is 3.5mm, the thickness ...

Example Embodiment

[0106]

[0107] Next, an example of an aluminum alloy foil manufactured through superposition rolling will be described.

[0108] (Example No. 101 to 110, Comparative Example No. 111 to 119)

[0109] The aluminum alloy having the composition shown in Table 3 was melted and cast to form an ingot, and after face milling the ingot, a homogenization heat treatment was performed at 540°C for 4 hours. The homogenized ingot is hot-rolled, cold-rolled, and then an intermediate annealing is performed. After that, cold rolling was performed under the conditions of foil rolling by superposition rolling until a part was removed to an average thickness of 12 μm, and the aluminum alloy foil was formed. The conditions of the intermediate annealing were a continuous annealing furnace, an annealing temperature of 450°C, a heating rate of 10°C / sec, a cooling rate of 20°C / sec, and a holding time of 5 seconds. The thickness of the plate (foil texture) after hot rolling is 3.0mm, the thickness of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

An aluminum alloy hard foil for battery collector comprises the following components: 0.8-1.5wt% of Mn; 0.05-0.20wt% of Cu; 0.3-0.7wt% of Fe, and the balance of Al and inevitable impurity. The thickness of the alminium alloy hard foil for battery collector is 9-20 mu m. More than thirty subgrains are provided in a thickness direction. The tensile strength is 280-350MPa and the extensibility is more than 3.5%. According to the composition, the aluminum alloy hard foil for battery collector has a high strength and excellent extensibility.

Description

technical field [0001] The present invention relates to an aluminum alloy hard foil for a battery current collector used as a positive electrode current collector of a lithium ion secondary battery. Background technique [0002] In recent years, lithium-ion secondary batteries have been used as power sources for mobile devices such as mobile phones and notebook computers. An electrode material of such a lithium ion secondary battery is formed of a positive electrode material, a separator, and a negative electrode material. Furthermore, the manufacture of the positive electrode material is carried out as follows: On both sides of an aluminum foil (or aluminum alloy foil) for a current collector with a thickness of about 15 μm, LiCoO is coated with a thickness of about 100 μm. 2 In order to remove the solvent of the coated active material, the active material is dried, pressed to increase the density of the active material, and then cut and divided. In addition, the drying s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C21/00H01M4/66
CPCY02E60/12Y02E60/122Y02E60/10C22C21/00H01M4/662H01M10/0525
Inventor 梅田秀俊伊原健太郎星野晃三金田大辅
Owner KOBE STEEL LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap