Title:
２次電池集電体用電解銅箔
Document Type and Number:
Japanese Patent JP5588044
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electrolytic copper foil for secondary battery having a small surface roughness, in which formation of "ruffled wrinkles" or discolored streak along the length direction is prevented, by making the thickness uniform in the width direction and the length direction.SOLUTION: Average 60 degree glossiness is 150% or more in the width direction of mat surface, foil thickness difference is 1.5% in the width direction, and there is no discolored streak along the length direction on the surface of a copper foil.
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Inventors:
Michiya Kohiki
Application Number:
JP2013093520A
Publication Date:
September 10, 2014
Filing Date:
April 26, 2013
Export Citation:
Assignee:
JX day ore Nippon Oil metal incorporated company
International Classes:
C25D1/04; H01M4/66
Attorney, Agent or Firm:
Axis international patent business corporation
Isamu Ogoshi
Isamu Ogoshi