Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2002-12-24
2009-02-10
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S225000, C429S233000, C429S242000
Reexamination Certificate
active
07488557
ABSTRACT:
The present invention relates to a lead-acid battery Comprising a positive and a negative electrode, each having a current collector comprising an expanded grid, characterized in that at least one of the positive electrode and the negative electrode contains an organic binder in an active material layer at an edge portion thereof.This makes it possible to suppress an internal short circuit resulting from the separation or abnormal growth of an active material due to repeated charge/discharge, thereby remarkably prolonging the cycle life of a lead-acid battery.
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Hoshihara Naoto
Maeda Akihiro
Nakajima Junji
McDermott Will & Emery LLP
Panasonic Corporation
Ryan Patrick
Walker Keith
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