Inert electrode comprising a conductive coating polymer blend formed of polyanisidine and polyacrylonitrile
First Claim
1. An inert electrode comprising:
- an electrode substrate formed of an electrically conductive material; and
a conductive coating polymer blend that is chemically inactive in oxidizing or reducing solution environments, said conductive coating polymer blend being in physical and conductive contact with said electrode substrate; and
whereinsaid conductive coating polymer blend is formed of a homogeneous blend of polyanisidine and polyacrylonitrile in which said polyanisidine is present in an amount of between about 5 and 90 percent by weight; and
whereinthe amount of said polyacrylonitrile in said conductive coating polymer blend is sufficient to prevent said polyanisidine from undergoing oxidation-reduction during the application of voltage to said substrate and said conductive coating polymer blend; and
whereinthe amount of said polyacrylonitrile in said conductive coating polymer blend is sufficient to prevent said polyanisidine from the degrading action of irreversible over-oxidation when voltages are applied to said substrate and said conductive coating polymer blend that are greater than the applied voltages at which polyanisidine is irreversibly over-oxidized when polyanisidine is applied to a conductive substrate in substantially pure form.
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Abstract
The compound ortho-methoxyaniline (o-anisidine) can be polymerized by both chemical and electrochemical means to produce polyanisidine, a soluble polymer of high electrical conductivity. Also called poly-o-methoxyaniline or PANIS, polyanisidine can be further blended with various other polymers enabling construction of devices with desirable electrical, optical and physical properties. Oxidative polymerization yields have been increased to 47 percent with no apparent loss in electrical conductivity. PANIS has been blended with polystyrene, polyacrylonitrile, polyethylene oxide and poly(trimethyl hexamethylene terephthalamide) (nylon) to form free-standing, stable, flexible films and fibers having electrical resistance values dependent upon the concentration of PANIS. The applicability of PANIS technology has been demonstrated with the construction of three devices: a switching device that will change color upon the application of positive and negative voltages, an inert polymer electrode, and an electromagnetically shielded connector.
59 Citations
7 Claims
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1. An inert electrode comprising:
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an electrode substrate formed of an electrically conductive material; and a conductive coating polymer blend that is chemically inactive in oxidizing or reducing solution environments, said conductive coating polymer blend being in physical and conductive contact with said electrode substrate; and
whereinsaid conductive coating polymer blend is formed of a homogeneous blend of polyanisidine and polyacrylonitrile in which said polyanisidine is present in an amount of between about 5 and 90 percent by weight; and
whereinthe amount of said polyacrylonitrile in said conductive coating polymer blend is sufficient to prevent said polyanisidine from undergoing oxidation-reduction during the application of voltage to said substrate and said conductive coating polymer blend; and
whereinthe amount of said polyacrylonitrile in said conductive coating polymer blend is sufficient to prevent said polyanisidine from the degrading action of irreversible over-oxidation when voltages are applied to said substrate and said conductive coating polymer blend that are greater than the applied voltages at which polyanisidine is irreversibly over-oxidized when polyanisidine is applied to a conductive substrate in substantially pure form. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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- Resources
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Current AssigneeAMP Limited
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Original AssigneeAMP Limited
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InventorsJones, Warren C., Joyce, James L. Jr., MacInnes, David F. Jr.
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Primary Examiner(s)Lieberman, Paul
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Assistant Examiner(s)SWOPE, BRADLEY
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Application NumberUS07/596,066Time in Patent Office859 DaysField of Search252/500, 252/518, 428/411US Class Current252/500CPC Class CodesC08G 73/0266 Polyanilines or derivatives...C25B 11/073 characterised by the electr...G01N 27/30 Electrodes, e.g. test elect...H01B 1/128 comprising six-membered aro...H01M 4/668 Composites of electroconduc...H01R 13/6599 Dielectric material made co...Y02E 60/10 Energy storage using batteriesY10T 428/31504 Composite [nonstructural la...
