Methods for coating surfaces with magnetic composites exhibiting distinct flux properties
First Claim
1. A method of making an electrode with a surface coated with a magnetic composite with a plurality of boundary regions with magnetic gradients having paths to the surface of said electrode, comprising the steps of:
- mixing a first mixture of at least approximately 1 percent by weight of inert polymer coated magnetic microbeads containing at least approximately 10 percent by weight of magnetizable material having diameters of at least approximately 0.11 micrometer in a first solvent with a second mixture comprising at least approximately 2% by weight of an ion exchange polymer in a second solvent to yield a mixed suspension;
applying said mixed suspension to the surface of the electrode, said electrode being arranged in a magnetic field of at least approximately 0.05 Tesla which has a component oriented approximately along the normal of said electrode surface; and
evaporating said first solvent and said second solvent to yield the electrode with a surface coated with the magnetic composite having a plurality of boundary regions with magnetic gradients having paths to the surface of the electrode.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for coating a surface with a magnetic composite material exhibiting distinct flux properties due to gradient interfaces within the composite. Surfaces coated with such a composite can be used to improve fuel cells and to effect improved transport and separation of different species of materials. A wide variety of devices can incorporate such composite-coated surfaces, including separators, fuel cells, electrochemical cells, and electrodes for channeling flux of, or for effecting electrolysis of, magnetic species.
-
Citations
14 Claims
-
1. A method of making an electrode with a surface coated with a magnetic composite with a plurality of boundary regions with magnetic gradients having paths to the surface of said electrode, comprising the steps of:
-
mixing a first mixture of at least approximately 1 percent by weight of inert polymer coated magnetic microbeads containing at least approximately 10 percent by weight of magnetizable material having diameters of at least approximately 0.11 micrometer in a first solvent with a second mixture comprising at least approximately 2% by weight of an ion exchange polymer in a second solvent to yield a mixed suspension; applying said mixed suspension to the surface of the electrode, said electrode being arranged in a magnetic field of at least approximately 0.05 Tesla which has a component oriented approximately along the normal of said electrode surface; and evaporating said first solvent and said second solvent to yield the electrode with a surface coated with the magnetic composite having a plurality of boundary regions with magnetic gradients having paths to the surface of the electrode. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method of making an electrode with a surface coated with a composite with a plurality of boundary regions with magnetic gradients having paths to the surface of said electrode when an external magnetic field is applied to the electrode, comprising the steps of:
-
mixing a first mixture of at least 5 percent by weight of inert polymer coated microbeads containing between 10 percent and 90 percent magnetizable non-permanent magnetic material and having diameters of at least 0.5 micrometer in a first solvent with a second solution of at least 5 percent of ion exchange polymers in a second solvent to yield a mixed suspension; applying said mixed suspension to the surface of the electrode; and evaporating said first solvent and said second solvent to yield the electrode with a surface coated with the composite having a plurality of boundary regions with magnetic gradients having paths to the surface of the electrode when an external magnet is applied. - View Dependent Claims (7)
-
-
8. A method of coating a surface with a magnetic composite material, comprising the steps of:
-
applying to the surface a composition comprising an inert polymer coated magnetic microbeads, an ion exchange polymer, and a solvent as a mixed suspension; arranging the surface in a magnetic field; and evaporating the solvent to form a coating of the magnetic composite on the surface. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification