Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate
2011-01-25
2011-01-25
Maples, John S (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
C429S144000, C429S251000, C429S252000, C428S315700, C428S315900, C156S060000, C977S948000
Reexamination Certificate
active
07875380
ABSTRACT:
A complex membrane for an electrochemical device such as a lithium secondary battery, its manufacturing method, and an electrochemical device having the complex membrane are disclosed. The complex membrane includes a micro-porous polyolefin membrane, and a web-phase porous membrane united to at least one side of the micro-porous polyolefin membrane and composed of nano-fibers. Since the complex membrane is capable of absorbing an electrolyte uniformly, it greatly improves performance of a battery when being used for an electrochemical device. In addition, owing to excellent mechanical strength and good binding capacity to an electrode, it helps to increase a process rate for manufacturing the battery.
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Chun Suk-Won
Jo Seong-Mu
Lee Hwa-Seop
Park Jong-Su
Edwards Angell Palmer & & Dodge LLP
Kim Kongsik
Maples John S
Nanophil Co., Ltd.
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