Metal foil for current collector of secondary battery and...

Details Metal foil for current collector of secondary battery and... Metal foil for current collector of secondary battery and...

2005-04-12

2005-04-12

Zimmerman, John J. (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Foil or filament smaller than 6 mils

C428S935000

Reexamination Certificate

active

06878458

ABSTRACT:
A metal foil for a current collector of a secondary battery formed by electrodeposition and has a thickness (T) of 8 to 40 μm, the metal foil satisfying the following formulae:in-line-formulae description="In-line Formulae" end="lead"?4.9×108≦T×S×Y≦31×108in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?4.5≦ε−(0.0005×T2)≦15in-line-formulae description="In-line Formulae" end="tail"?where S is a breaking strength (MPa), ε is a tensile elongation (%) and Y is a Young's modulus (MPa).This foil is preferably a nickel foil and is manufactured by softening or annealing the metal foil obtained by electrodeposition. Thereby, a metal foil for a negative electrode of a secondary battery is obtained with an excellent capability of supporting the active material and large electric conductivity.

REFERENCES:
patent: 5472333 (1995-12-01), van der Zel
patent: 5700562 (1997-12-01), Sugimoto et al.
patent: 5830583 (1998-11-01), Clouser et al.
patent: 11-126613 (1999-05-01), None
patent: 11-323593 (1999-11-01), None
patent: P2001-189154 (2001-07-01), None
patent: 2002-280000 (2002-09-01), None

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