Valence Technology, Inc.

David A Velasquez

Douglas B Holmes

E Lawrence Goglin

E Lawrence Gogolin

Porter H Mitchell

Ib I Olsen

A method of fabricating electrochemical cells and batteries wherein the successive anode and cathode layers are separated by a polymeric electrolyte layer having a protruding polymer edge around its perimeter which reduces the likelihood of inadvertent contact between the anode and cathode current collectors is provided. The polymer edge functions as a non-conducting physical barrier positioned between adjacent current collectors. An apparatus for preparing electrochemical cells is also disclosed.

Method and apparatus for preparing electrochemical cells

A method for removing plasticizers such dibutyl phthalate from the anode, cathode, and polymeric matrix components of electrochemical cell precursors using carbon dioxide in the supercritical state is provided. The method forms porous polymeric structures that enhances the mass transport of ions in the cell which results in improved electrochemical performance.

Apparatus and method of preparing electrochemical cells

A method of fabricating electrochemical cells and batteries wherein the successive anode and cathode layers are separated by a polymeric electrolyte layer having a protruding polymer edge around its perimeter which reduces the likelihood of inadvertent contact between the anode and cathode current collectors is provided. The polymer edge functions as a non-conducting physical barrier positioned between adjacent current collectors.

Method of preparing electrochemical cells

A method of fabricating electrodes suitable for use in electrochemical cells is provided. Each electrode has a perforated current collector and a tab which form an integral unit. The method can be adapted for batch, semi-continuous, or continuous fabrication of electrodes having electrode material laminated onto one or both surfaces of the current collector.

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Fairfield, CA, United States of America

David A Velasquez