Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2006-11-28
2006-11-28
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
C029S623500, C029S623200
Reexamination Certificate
active
07141333
ABSTRACT:
A method for producing an electrochemical element having at least one lithium-intercollating electrode and an organic electrolyte, at least one positive electrode, at least one negative electrode and at least one separator are joined together to form an element, with the separator being a porous matrix composed of at least about 60% by weight of a ceramic material A, which contains lithium ions, and a polymer as a binding agent. The resulting element is then introduced into a housing and impregnated with a liquid organic electrolyte B, whose conductive salt contains lithium ions, so that the ionic total conductivity of the separator is formed by adding the ion conductivities of A and B and the reciprocal of the specific contact resistance of the phase boundary between A and B, and is then closed such that it is sealed. A copolymer composed of vinylidene fluoride and hexafluoropropylene is used as the binder polymer. Material A is a naturally occurring mineral.
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Birke Peter
Birke-Salam Fatima
Haug Peter
Holl Konrad
Ilic Dejan
DLA Piper (US) LLP
O'Neill Karie
Ryan Patrick Joseph
Varta Microbattery GmbH
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