EP0090425A1
Expired / Lapsed
EP
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Electrolysis electrode and production method thereof
Assignee: Ishifuku Metal Industry Co Ltd
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Filing: 1983-03-30
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Granted: —
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Expires: 2003-03-30
Abstract
Abstract To eliminate the technical problems with the prior art described above, and accomplish the object described above, the gist of the present invention resides in that the components of the electrode reaction member are divided into two different and independent compositions, whereby one of the components is a porous supported material of a platinum component which is bonded onto the surface of a corrosionresis- tant, electrically conductive substrate, and the other component is a support consisting of at least one of ruthenium oxide, palladium oxide and iridium oxide, distributed three-dimensionally in and over the surface of the above component, and being thus supported and bonded thereto. The supported material component and the support component can exhibit a sufficient electrode function even in an electrode in which they are used individually as electrode reaction members. Since these supported material component and support component are three-dimensionally supported and formed, the functions and advantages of the individual components are not lost or sacrificed.
Inventors
- 👤 Tomoyoshi Asaki
- 👤 Yoichi Kamegaya
- 👤 Yukio Arai
- 👤 Yasuhumi Sasaki
- 👤 Nobuyuki Koyanagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:38
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, the improvement wherein said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate, and a support three-dimensionally supported by said porous supported material.
Claim 2
Dependent Claim
62 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, the improvement wherein said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate, and a support three-dimensionally supported by said porous supported material.
Claim 3
Dependent Claim
36 words
The electrolysis electrode as defined in Claim 1 wherein the component of said supported material is porous platinum, and the component of said support is at least one of ruthenium oxide, palladium oxide and iridium oxide.
Claim 4
Dependent Claim
110 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, an electrolysis electrode having an improved service life characterized in that said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate and a support which is supported three-dimensionally by said porous supported material, and only the quantity of said supported material is increased under the state in which the components of said electrode reaction member arc consumed but said electrode reaches its service life, so as to extend the electrode life.
Claim 5
Dependent Claim
110 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, an electrolysis electrode having an improved service life characterized in that said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate and a support which is supported three-dimensionally by said porous supported material, and only the quantity of said supported material is increased under the state in which the components of said electrode reaction member arc consumed but said electrode reaches its service life, so as to extend the electrode life.
Claim 6
Dependent Claim
114 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, an electrolysis electrode having an improved service life characterized in that said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate, and a support which is supported three-dimensionally by said supported material, and only the quantity of the component of said support is increased under the state in which the component of said electrode reaction member remains but said electrode reaches its service life at a high overvoltage, so as to extend the electrode life.
Claim 7
Dependent Claim
114 words
In an electrolysis electrode of the type in which at least part of the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, an electrolysis electrode having an improved service life characterized in that said electrode reaction member consists of a porous supported material integrally bonded to the surface of said corrosion-resistant, electrically conductive substrate, and a support which is supported three-dimensionally by said supported material, and only the quantity of the component of said support is increased under the state in which the component of said electrode reaction member remains but said electrode reaches its service life at a high overvoltage, so as to extend the electrode life.
Claim 8
Dependent Claim
72 words
In a method of producing an electrolysis electrode of the type in which the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, and said electrode reaction member consists of a supported material and a support, the improvement wherein after a porous supported material is formed over the surface of said corrosion-resistant, electrically conductive substrate, said support is formed while being supported three-dimensionally by said supported material.
Claim 9
Dependent Claim
72 words
In a method of producing an electrolysis electrode of the type in which the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, and said electrode reaction member consists of a supported material and a support, the improvement wherein after a porous supported material is formed over the surface of said corrosion-resistant, electrically conductive substrate, said support is formed while being supported three-dimensionally by said supported material.
Claim 10
Dependent Claim
54 words
The method of producing an electrolysis electrode as defined in Claim 5 wherein after a supported material is further formed over the surface of said electrode reaction member obtained by forming said support three-dimensionally over said supported material, the procedure of forming said support three-dimensionally over said supported material is repeated at least once.
Claim 11
Dependent Claim
111 words
In a method of producing an electrolysis electrode of the type in which the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, and said electrode reaction member consists of a supported material and a support, the improvement wherein after porous platinum is formed over at least part of each of the surfaces of said corrosion-resistant, electrically conductive substrate and that of said electrode reaction member, at least one of ruthenium oxide, palladium oxide and iridium oxide is permeated into said platinum by thermal decomposition, and said oxide of said metal from the platinum group is supported and formed three-dimensionally by said platinum by thermal decomposition.
Claim 12
Dependent Claim
111 words
In a method of producing an electrolysis electrode of the type in which the surface of a corrosion-resistant, electrically conductive substrate is coated with an electrode reaction member, and said electrode reaction member consists of a supported material and a support, the improvement wherein after porous platinum is formed over at least part of each of the surfaces of said corrosion-resistant, electrically conductive substrate and that of said electrode reaction member, at least one of ruthenium oxide, palladium oxide and iridium oxide is permeated into said platinum by thermal decomposition, and said oxide of said metal from the platinum group is supported and formed three-dimensionally by said platinum by thermal decomposition.
References Cited (Backward Citations)
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