Title:
ALUMINUM ALLOY FOIL FOR BATTERY CURRENT COLLECTOR, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/063091
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an aluminum alloy foil for a current collector, the aluminum alloy foil having excellent tensile strength and elongation after foil rolling, as well as after low-temperature heat treatment which is expected to occur during the battery manufacturing process, especially after 120°C heat treatment. The aluminum alloy foil for a battery current collector has a composition containing 0.15 mass% or more and less than 0.3 mass% of Fe and more than 0.8 mass% and less than 1.5 mass% of Si, with the remainder comprising Al and inevitable impurities, wherein the average equivalent circle diameter of intermetallic compounds present on the surface of the aluminum alloy foil is 1.0 μm or less, and the number density of intermetallic compounds that are present on the surface of the aluminum alloy foil and have an equivalent circle diameter of more than 3.0 μm is 2.0×102/mm2 or less.
Inventors:
MURAMATSU KENJI (JP)
AKIYAMA SOTARO (JP)
MURAKAMI TAKUMI (JP)
AKIYAMA SOTARO (JP)
MURAKAMI TAKUMI (JP)
Application Number:
PCT/JP2023/034086
Publication Date:
March 28, 2024
Filing Date:
September 20, 2023
Export Citation:
Assignee:
TOYO ALUMINIUM KK (JP)
International Classes:
C22C21/00; B21B3/00; B22D11/06; C22F1/04; H01M4/66; C22F1/00
Domestic Patent References:
| WO2010100924A1 | 2010-09-10 |
Foreign References:
| JP2018028110A | 2018-02-22 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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