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Title:
PERFORATED METAL FOIL, PERFORATED METAL FOIL MANUFACTURING METHOD, SECONDARY BATTERY NEGATIVE ELECTRODE, AND SECONDARY BATTERY POSITIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2018/211916
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a perforated metal foil which enables efficient pre-dope and has high strength, a secondary battery negative electrode, and a secondary battery positive electrode. The perforated metal foil has a plurality of through-holes in a thickness direction of the metal foil, wherein an average opening ratio due to the through-holes is 0.5 to 10%, the density of the through-holes is 50 to 200 holes/mm2, and the metal foil is a foil which is selected from the group consisting of copper foil, silver foil, gold foil, platinum foil, stainless steel foil, titanium foil, tantalum foil, molybdenum foil, niobium foil, zirconium foil, tungsten foil, beryllium copper foil, phosphor bronze foil, brass foil, nickel silver foil, tin foil, zinc foil, iron foil, nickel foil, permalloy foil, nichrome foil, 42-alloy foil, kovar foil, monel foil, inconel foil, and hastelloy foil, or which comprises a laminate of a foil selected from the group and a metal of a type different from the selected foil.

Inventors:
SAWADA HIROKAZU (JP)
KAWAGUCHI JUNJI (JP)
Application Number:
PCT/JP2018/016425
Publication Date:
November 22, 2018
Filing Date:
April 23, 2018
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
H01M4/70; H01G11/68; H01G11/70; H01M4/13; H01M4/134; H01M4/66; H01G11/06
Domestic Patent References:
WO2014119582A12014-08-07
WO2014178327A12014-11-06
WO2016159058A12016-10-06
WO2012049967A12012-04-19
Foreign References:
JP2012138408A2012-07-19
JPH0922699A1997-01-21
JP2006228512A2006-08-31
JP2012004491A2012-01-05
JP2003263979A2003-09-19
JP2018053276A2018-04-05
JP2013077734A2013-04-25
JPS62251740A1987-11-02
JPH03208514A1991-09-11
JPS59121044A1984-07-12
JPH0413149A1992-01-17
JP2012216513A2012-11-08
Other References:
See also references of EP 3627599A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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