Aluminum alloy foil for current collector of electrode, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9947917-B2
Application number	US-201415031476-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Oct 25, 2013
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

An aluminum alloy foil for a current collector of an electrode is provided which has not only high electric conductivity but also high strength before and after a drying step, and is low in manufacturing cost. Provided is an aluminum alloy foil for a current collector of an electrode, containing 1.0 to 2.0 mass % (hereafter, simply referred to as “%”) of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, and 0.005 to 0.3% of Ti, the remainder being Al and inevitable impurities, wherein an amount of Fe contained as a solid solution is 300 ppm or more, and particles of intermetallic compounds having an equivalent circle diameter of 0.1 to 1.0 μm exist at 1.0×10 5 particles/mm 2 or more.

First claim

What is claimed is:

1. An aluminum alloy foil for a current collector of an electrode, containing 1.0 to 2.0% of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, and 0.005 to 0.3% of Ti, the remainder being Al and inevitable impurities, wherein
an amount of Fe contained as a solid solution is 300 ppm or more, and
particles of intermetallic compounds having an equivalent circle diameter of 0.1 to 1.0 μm exist at 1.0×10 5 particles/mm 2 or more.

2. A current collector of an electrode comprising an aluminum alloy foil for a current collector of an electrode of claim 1 .

3. An electrode assembly comprising
a current collector of an electrode of claim 2 , and
an active material layer or an electrode material layer formed on said current collector of an electrode.

Assignees

• Uacj Corp
• Uacj Foil Corp

Inventors

• Seki Masakazu
• Suzuki Satoshi
• Furutani Tomohiko

Classifications

• B21B2001/221

  by cold-rolling · CPC title

• B22D11/003 Primary

  Aluminium alloys · CPC title

• B21B1/40

  for rolling foils which present special problems, e.g. because of thinness · CPC title

• H01B5/02

  Single bars, rods, wires, or strips · CPC title

• H01M4/662

  Alloys (collectors of lead alloys H01M4/685) · CPC title