CN1128413A - Hydrogen-storage alloy material for hydrogen electrode - Google Patents
Hydrogen-storage alloy material for hydrogen electrode Download PDFInfo
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- CN1128413A CN1128413A CN95112291A CN95112291A CN1128413A CN 1128413 A CN1128413 A CN 1128413A CN 95112291 A CN95112291 A CN 95112291A CN 95112291 A CN95112291 A CN 95112291A CN 1128413 A CN1128413 A CN 1128413A
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- Prior art keywords
- hydrogen
- battery
- alloy
- storage alloy
- alloy material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to hydrogen-storage alloy material for the hydrogen electrode of secondary alkali cell. The said material contains, Ca, Ni, Co, Mn, Al and B. It is produced into hydrogen-storage electrode via surface nickel plating at 30-50 deg.C. The cell produced with the present invention is superior to available ones in activation property, initial capacity, high-power discharge property, life, sealing safety, etc.
Description
The present invention relates to a kind of alloy material.Specifically a kind of nickel/hydrogen battery hydrogen-storage alloy material for hydrogen electrode.
We know that nickel/hydrogen battery is a kind of high-tech product of Recent study, exploitation, and its key is the selection and the making of hydrogen electrode storage oxygen alloy material.Improve electrochemistry capacitance, prolong the useful life in the hydrogen-storage alloy repeated charge-discharge cycles process, suppress the decay of its discharge capacity, this is the important subject of hydrogen storage electrode.At present, on rare earth-Ni-base hydrogen bearing electrode basis, the scientific worker researchs and develops out many alloy materials, makes bianry alloy form a series of multielement rare earth-Ni-base hydrogen bearing electrode metal, as
, in the recent period representative is that Japan Patent JP63-264869 provides
Yet the useful life of nickel/hydrogen battery of making of above-mentioned alloy, performances such as high current charge-discharge, self discharge, sealing are still undesirable, in order to improve combination property, J.Less-CommnMet., 172.P1175.1991, introduced on the alloyed powder surface and carried out chemical nickel plating, but before chemical plating, needed to add Pdcl
2Make sensitization, activation processing Deng precious metal solution, and at high temperature (80-90 ℃) carries out, this is the conditional request strictness on the one hand, is difficult for carrying out, and cost increases greatly.
Purpose of the present invention is exactly the deficiency that has various alloys now in order to overcome, and a kind of have high electrochemistry capacitance and catalytic activity are provided, and the repeated charge-discharge cycles life-span is long, the hydrogen-storage alloy material for hydrogen electrode that self-discharge rate is low.
The object of the present invention is achieved like this, partly replaces norium with the Ca element
, partly replace in the norium with elements such as CO, Mn, Al, B
Make storage alloy material for hydrogen, its alloy formula is:
0.05≤x in the formula≤0.2,0.2≤y≤8.4,0.2≤z≤0.4,0.1≤u≤0.3,0.05≤V≤0.15.
The preferred chemical formula of alloy of the present invention is:
The present invention exists
In added elements such as Ca, Co, Na, Al, B, partly replace with Ca
, with Co, Mn, Al,
Part replaces Ni, and compared to existing technology, the present invention has following outstanding advantage:
1, Ca has occupied the character position in the alloy, and it at first is oxidized to Ca (OH) in continuous charge and discharge process
2Thereby, protected the oxidized of norium Mn in the inner alloy effectively, make to have and inhale the hydrogen lattice
Structure does not go to pot, added B on the other hand, the hydride that forms behind the absorption hydrogen has the bridged ring network structure of part, and this has hindered the outdiffusion of inner hydrogen effectively, avoid hydrogen to be diffused into anodal and the NiOOH reaction, made nickel/hydrogen battery of making that lower self discharge be arranged.
2, added in the alloy of the present invention
, two kinds of elements of B, the particle that makes the hydrogen-storage alloy microparticle surfaces have catalytic activity, thus chemical plating Mi-P alloy can directly be carried out on the alloyed powder surface under temperate condition.Drip the reducing agent inferior sodium phosphate, the nickel ion in the solution is reduced the catalysis particle place at particulate, progressively forms nucleus then, and diffusion is grown up, and makes coating very even.Because the coating overwhelming majority is Ni, this just makes hydrogen-storage alloy that an excellent protection cover is arranged, and has prevented that effectively lattice from putting expansion and contraction in the hydrogen process in suction, also causes the battery short circuit or the lost of life with regard to the micronize that has prevented alloy electrode; Because coating has favorable conductive, heat conductivility, make nickel/hydrogen battery of making that the characteristic of good fast charging and discharging be arranged; Because coating is made up of the thick metal Ni-P of 0.4～0.8 μ m, and good catalytic activity is arranged, there is not absorbed H in the time of can making charging
2, O
2Be combined to water mutually, make inner pressure of battery reduce, can security seal, be convenient to large-scale industrial production.
Thereby, use the battery that storage alloy material for hydrogen of the present invention is made, its electrochemistry capacitance and activity function height, item technical indicators such as high-rate discharge ability, cycle life, sealing property all are better than prior art significantly.
Provide below and implement:
Embodiment 1: press
The proportioning of chemical formula is weighed, wherein
Be norium, be the commercially available prod, Ca, Ni, Co, Mn, Al, B purity are 99%.Batching is dry to be placed in the water-cooled copper pincers pot that vacuum induction is jealous of, and induction furnace finds time to spread out gas, melting under the argon gas atmosphere protection, and pour into alloy cast ingot.The Mechanical Method powder process of gained alloy is worn into the alloyed powder of 30～70 μ m with the roller milling machine, carries out chemical plating nickel-phosphorus alloy on its surface then, and bath concentration and process conditions that it is selected for use are: NiCl
26H
2O 99/l
11.5g/l
16g/lNH
4Cl 8g/lPH 8.2-8.8 temperature (℃) 35～50 chemical plating gained thickness of coating reach 0.6 μ m.The present invention is owing to added elements such as Ca, B, can successfully carry out chemical plating at cryogenic conditions with less material, obtain well behaved coating, get this alloyed powder, add furnishing pastel such as PTFE, water, as base material, make metal-hydride negative through slurry, roll extrusion, section with perforation nickel plating stainless steel band, with the oxygen nickel oxide is positive pole
Solution is electrolyte, and nylon nonwoven fabrics is a barrier film, is assembled into AA type sealed cell A, simultaneously consisting of
Alloy dress up the battery A of same model by same process, battery A can reach nominal capacity through twice activation
, battery B then needs 7 times, shows that the activity function of battery A is good, compress into the row test in to A, B battery latter stage in charging in addition, the interior pressure of A battery will be starkly lower than B battery, shows that the green wood section that the A battery adopts can reduce interior pressure, make cell sealing safety, be suitable for suitability for industrialized production.See attached list 1:
Subordinate list 1 AA type A, two kinds of cell activation number of times of B and interior the pressure contrast
Embodiment 2
Melting must consist of in vaccum sensitive stove
Hydrogen-storage alloy, and make AA type sealed cell C by embodiment 1 technology, IEC relative standard by the Ni/Cd battery carries out cycle life to the battery B of embodiment 1 and the battery C of present embodiment, the self discharge test, through 580 circulations, the C battery capacity only descends 7%, and the B battery capacity descends 15%, 28 days self-discharge rates of C battery are 21%, and B battery then is 31%; C high-rate battery discharge and specific energy performance are also significantly better than B battery (seeing attached list 2) in addition.
The heavy-current discharge of subordinate list 2 B, C two batteries and specific energy contrast
Claims (2)
1, a kind of hydrogen-storage alloy material for hydrogen electrode contains the norium element, it is characterized in that the chemical formula of alloy is:
0.05≤x in the formula≤0.2,0.2≤y≤0.4,0.2≤z≤0.4,0.1≤u≤8.3,0.85≤v≤0.15.
2, hydrogen-storage alloy material for hydrogen electrode as claimed in claim 1 is characterized in that said alloy formula is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95112291A CN1050450C (en) | 1995-12-22 | 1995-12-22 | Hydrogen-storage alloy material for hydrogen electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95112291A CN1050450C (en) | 1995-12-22 | 1995-12-22 | Hydrogen-storage alloy material for hydrogen electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1128413A true CN1128413A (en) | 1996-08-07 |
| CN1050450C CN1050450C (en) | 2000-03-15 |
Family
ID=5079470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95112291A Expired - Fee Related CN1050450C (en) | 1995-12-22 | 1995-12-22 | Hydrogen-storage alloy material for hydrogen electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050450C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057405C (en) * | 1997-08-04 | 2000-10-11 | 南开大学 | Hydrogen-adsorped alloy electrode material |
| CN1297021C (en) * | 2005-05-31 | 2007-01-24 | 钢铁研究总院 | Cathode material in use for nickel-hydrogen battery in high capacity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033654C (en) * | 1992-05-16 | 1996-12-25 | 上海工业大学 | hydrogen-storing electrode alloy |
| CN1107815A (en) * | 1994-03-04 | 1995-09-06 | 徐虎林 | Composite, insulating, light organosilicon wall material and its production process |
-
1995
- 1995-12-22 CN CN95112291A patent/CN1050450C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057405C (en) * | 1997-08-04 | 2000-10-11 | 南开大学 | Hydrogen-adsorped alloy electrode material |
| CN1297021C (en) * | 2005-05-31 | 2007-01-24 | 钢铁研究总院 | Cathode material in use for nickel-hydrogen battery in high capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050450C (en) | 2000-03-15 |
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