Patent US1283225A successfully refreshed from Google Patents.
US4985318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline battery with a nickel electrode
Assignee: Honda Motor Co Ltd
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Filing: 1989-05-30
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Granted: 1991-01-15
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Expires: 2009-05-30
Abstract
Abstract A nickel electrode for an alkaline battery comprises a porous alkaline-proof metal fiber substrate used as a current collector, and active material for the electrode. The active material includes nickel hydroxide powder active material, to which zinc or magnesium is added at a rate in a range of 3-10 wt % or 1-3 wt %, respectively. The zinc and magnesium is in a solid solution in crystal of the nickel hydroxide, and the active material forms principle compound of paste, which is loaded in the electrode.
Inventors
- 👤 Masahiko Oshitani
- 👤 Keiichi Hasegawa
- 👤 Hiroshi Yufu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/32; H01M4/36; H01M4/48; H01M4/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
Active material for a nickel electrode comprising: nickel hydroxide powder active material; and zinc or magnesium which is added to said active material at a rate in a range of 3-10 wt% or 1-3 wt%, respectively, said zinc and magnesium being in a solid solution in crystal of said nickel hydroxide, and in distribution of pore radii calculated from the a desorption side at nitrogen adsorption isotherm of said powder, development of pore having a radius of 30 Å or more being prevented, and an entire pore volume rate being controlled at 0.05 ml/g or less.
Claim 2
Dependent Claim
96 words
Active material for a nickel electrode comprising: nickel hydroxide powder active material; and zinc or magnesium which is added to said active material at a rate in a range of 3-10 wt% or 1-3 wt%, respectively, said zinc and magnesium being in a solid solution in crystal of said nickel hydroxide, and in distribution of pore radii calculated from the a desorption side at nitrogen adsorption isotherm of said powder, development of pore having a radius of 30 Å or more being prevented, and an entire pore volume rate being controlled at 0.05 ml/g or less.
Claim 3
Dependent Claim
53 words
Active material as claimed in claim 1 wherein said active material powder, which includes nickel hydroxide and a small amount of said zinc or magnesium, is produced by deposition of sulfate solution thereof as starting material in aqueous solution having pH 11-13 controlled by caustic soda or caustic potash together with ammonium sulfate.
Claim 4
Dependent Claim
80 words
A nickel electrode comprising; a porous alkaline-proof metal fiber substrate used as a current collector; and active material for the electrode; said active material including; nickel hydroxide powder active material, to which zinc or magnesium is added at a rate in a range of 3-10 wt% or 1-3 wt%, respectively, said zinc and magnesium being in a solid solution in crystal of said nickel hydroxide; and said active material forming principle compound of paste, which is loaded in said electrode.
Claim 5
Dependent Claim
80 words
A nickel electrode comprising; a porous alkaline-proof metal fiber substrate used as a current collector; and active material for the electrode; said active material including; nickel hydroxide powder active material, to which zinc or magnesium is added at a rate in a range of 3-10 wt% or 1-3 wt%, respectively, said zinc and magnesium being in a solid solution in crystal of said nickel hydroxide; and said active material forming principle compound of paste, which is loaded in said electrode.
Claim 6
Dependent Claim
26 words
A nickel electrode as claimed in claim 3 wherein a small amount of cobalt in a solid solution exists in addition to said zinc or magnesium.
Claim 7
Dependent Claim
39 words
A nickel electrode as claimed in claim 3 wherein divalent cobalt compound, which forms cobalt complex ion when dissloven in alkaline aqueous solution, is added to said active material powder at a rate in a range of 5-15 wt/%.
Claim 8
Dependent Claim
38 words
A nickel electrode as claimed in claim 3 wherein conductive additives are not included, and the conductivity between said nickel fiber and particles of said active material is substantially maintained only by virtue of said cobalt compound additive.
Claim 9
Dependent Claim
39 words
An alkaline battery assembled with a nickel electrode as recited in claim 2 without formation, maintained under standing condition one or more days after supplying electrolyte therein, and initially charged after cobalt compound additive is completely dissolved and deposited.
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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |