Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2004-07-27
2008-10-28
Cantelmo, Gregg (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S162000
Reexamination Certificate
active
07442468
ABSTRACT:
A secondary battery includes a cathode electrode (10), an anode electrode (10′), and a separator (12) sandwiched between the cathode electrode and the anode electrode. The cathode electrode and the anode electrode each have a regular repeating non-curved inner surface (102) facing the separator, the inner surface defining a multi-stepped structure or a sawtooth-profile structure thereat. The non-curved surface enlarges a reactive surface area of the cathode electrode and the anode electrode. Accordingly, an energy density of the battery is improved. A method for making the battery includes: providing an anode electrode and a cathode electrode each having a surface facing the other; and forming a regular, repeating non-curved surface on each of the surfaces by way of photolithography.
REFERENCES:
patent: 4135040 (1979-01-01), Thornton
patent: 4975344 (1990-12-01), Wedlake et al.
patent: 5674644 (1997-10-01), Nazri
patent: 5888670 (1999-03-01), Kawakami
patent: 5981107 (1999-11-01), Hamano et al.
patent: 2003/0099884 (2003-05-01), Chiang et al.
patent: 62165875 (1987-07-01), None
patent: 01132064 (1989-05-01), None
Cantelmo Gregg
Hon Hai Precision Industry Co. Ltd.
Morris Manning & Martin LLP
Tingkang Xia, Esq. Tim
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