Patent ID: 7141333
Filing Date: 2006-11-28
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method of producing an electrochemical cell having at least one lithium-intercalating electrode comprising: joining together at least one positive electrode, at least one negative electrode and at least one separator to form an element, wherein the separator contains a porous matrix composed of at least about 60% by weight of a ceramic material A, said ceramic material A being a naturally occurring mineral containing lithium ions, and a polymer as a binding agent, said polymer being a copolymer composed of vinylidene fluoride and hexafluoropropylene; introducing the element into a housing; impregnating the element with a liquid organic electrolyte B, whose conductive salt contains lithium ions so that ionic total conductivity of the separator is formed by adding ion conductivities of A and B and the reciprocal of specific contact resistance of phase boundary between A and B; and sealing the housing.