US4498962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode for the electrolysis of water
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1983-10-07
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Granted: 1985-02-12
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Expires: 2003-10-07
Abstract
Abstract A cell for the electrolysis of water comprising an anode and a cathode wherein said anode comprises an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.
Inventors
- 👤 Yoshio Oda
- 👤 Hiroshi Otouma
- 👤 Eiji Endoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:53
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/051; C25B11/073; C25B11/091
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A cell for the electrolysis of water comprising an anode and a cathode wherein said anode comprises an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.
Claim 2
Dependent Claim
79 words
A cell for the electrolysis of water comprising an anode and a cathode wherein said anode comprises an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.
Claim 3
Dependent Claim
20 words
The cell according to claim 1, wherein said coating layer is composed of uniform layer of said electrochemically active material.
Claim 4
Dependent Claim
19 words
The cell according to claim 1, wherein said coating layer is composed of particles of said electrochemically active particles.
Claim 5
Dependent Claim
36 words
The cell according to claim 1, wherein said coating layer is composed of a uniform layer of a bonding metal and particles of said electrochemically active material embedded in and partially exposed from the uniform layer.
Claim 6
Dependent Claim
17 words
The cell according to claim 4, wherein said bonding metal is composed of said electrochemically active material.
Claim 7
Dependent Claim
15 words
The cell according to claim 4 wherein said bonding metal is nickel, cobalt or silver.
Claim 8
Dependent Claim
111 words
The cell according to claim 1, wherein said electrochemically active material is an alloy having a composition of Components X, Y and Z falling within the range defined by the following points A, B, C and D with reference to the diagram of FIG. 1: ______________________________________
A: X = 99.6 wt. %,
Y = 0 wt. %, Z = 0.4 wt. %
B: X = 79.6 wt. %,
Y = 20 wt. %,
Z = 0.4 wt. %
C: X = 40 wt. %, Y = 20 wt. %,
Z = 40 wt. %
D: X = 40 wt. %, Y = 0 wt. %, Z = 60 wt. %
______________________________________
Claim 9
Dependent Claim
35 words
The cell according to claim 4, wherein said particles are a mixture of particles of an alloy of Components X and Y and particles of a metal of Component Z or its alloy or oxide.
Claim 10
Dependent Claim
92 words
In a process for producing oxygen and hydrogen by electrolyzing an aqueous alkaline solution in an electrolytic cell comprising an anode and a cathode, the improvement comprising an anode comprising an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.
Claim 11
Dependent Claim
92 words
In a process for producing oxygen and hydrogen by electrolyzing an aqueous alkaline solution in an electrolytic cell comprising an anode and a cathode, the improvement comprising an anode comprising an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |