Method of making a flow through capacitor
AssigneeBiosource, Inc.
InventorsMarc D. Andelman, Gregory S. Walker
Life of this patent
Estimating the term…
Abstract
Flow-through capacitors are provided with one or more charge barrier layers. Ions trapped in the pore volume of flow-through capacitors cause inefficiencies as these ions are expelled during the charge cycle into the purification path. A charge barrier layer holds these pore volume ions to one side of a desired flow stream, thereby increasing the efficiency with which the flow-through capacitor purifies or concentrates ions.
Claims70
A method of making a flow-through capacitor, said method comprising:
- providing a plurality of electrodes comprising an electrode material having an electrostatic adsorptive surface area, wherein at least one of said electrodes comprises a plurality of pores whereby said at least one electrode is a porous electrode having a pore volume;
- locating a first membrane, material of the first membrane being different from said electrode material and the first membrane being other than a spacer, adjacent to said porous electrode;
- and
- positioning a spacer adjacent the first membrane, the spacer defining a flow path.
A method of making a flow-through capacitor cell, said method comprising:
- providing a plurality of electrodes;
- locating a membrane between two adjacent electrodes of said plurality of electrodes, wherein the flow-through capacitor comprises a series resistance of less than 50 ohm cm2;
- and
- positioning a spacer between the two adjacent electrodes, the spacer defining a flow path.
A method of making a flow-through capacitor cell, said method comprising:
- providing a plurality of electrodes;
- locating a membrane between two adjacent electrodes of said plurality of electrodes, wherein the flow-through capacitor has a leakage resistance to series resistance ratio of greater than 100;
- and
- positioning a spacer between the two adjacent electrodes, the spacer defining a flow path.
A method of making a flow-through capacitor cell, said method comprising:
- providing a plurality of electrodes;
- locating a membrane between two adjacent electrodes of said plurality of electrodes, wherein the electrodes are ionically insulated and connected electrically in series;
- and
- positioning a spacer between the two adjacent electrodes, the spacer defining a flow path.
A method of making a capacitor electrode, comprising:
- providing a capacitive electrode material comprising pores, whereby said electrode material is a porous electrode material;
- placing a membrane, material of the membrane being different from said electrode material and the membrane being other than a spacer, adjacent to at least a portion of said pores of said porous electrode;
- and
- positioning a spacer adjacent the membrane, the spacer defining a flow path.
Dependencies are inferred from the claim text.