CN101250647A - Production of hydrogen storage alloy using rare earth nickel-cobalt alloy as raw material - Google Patents
Production of hydrogen storage alloy using rare earth nickel-cobalt alloy as raw material Download PDFInfo
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- CN101250647A CN101250647A CNA2008100870381A CN200810087038A CN101250647A CN 101250647 A CN101250647 A CN 101250647A CN A2008100870381 A CNA2008100870381 A CN A2008100870381A CN 200810087038 A CN200810087038 A CN 200810087038A CN 101250647 A CN101250647 A CN 101250647A
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- rare earth
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- hydrogen storage
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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
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Abstract
The invention relates to a method for utilizing rare earth cobalt-nickel alloy to be raw material to produce hydrogen storage alloy, which belongs to the field of rare earth smelting and preparation. The method is characterized in that the method comprises the following steps: utilizing rare earth cobalt-nickel alloy which is extracted from waste rare earth hydrogen storage alloy to be raw material, firstly checking the components of rare earth cobalt-nickel alloy, assuring element loss amount in rare earth cobalt-nickel alloy according to the difference of components between rare earth cobalt-nickel alloy and standard hydrogen storage alloy, finding out the difference with the standard hydrogen storage alloy element, and leading the component range of alloy to achieve the chemical component of standard AB5 type hydrogen storage alloy through adjusting and complementing relative alloy element. 0.2C discharge capacity of rare earth cobalt-nickel alloy which is prepared by the invention is 282mAh/g, and effective hydrogen absorption amount is 0.869wt%, and the hydrogen storage alloy has simple and reasonable technique flow, which has no environmental contamination. The application of hydrogen storage alloy can lead the production cost of rare earth hydrogen storage alloy to be greatly lowered, and can play an active role for overall popularizing and applying rare earth Ni-MH batteries.
Description
One, technical field
The present invention relates to a kind of is the raw material production hydrogen-storage alloy with the rare earth nickel cobalt (alloy), belongs to the smelting and the preparation field of rare earth functional materials.
Two, background technology
At present, it is main raw material that the production hydrogen-storage alloy all adopts pure cobalt, nickel, rare earth, aluminium, manganese, titanium etc., the rare earth hydrogen-storage alloy of producing or the production cost height of cell negative electrode material, the waste material accumulation problem that occurs in process of production is serious day by day, not only take a large amount of lands used, and contaminate environment, waste is serious.
Three, summary of the invention
The object of the present invention is to provide a kind of is main raw material(s) with the nickel cobalt rare earth alloy that refines from useless rare earth hydrogen-storage alloy, realize the regeneration of useless rare earth hydrogen-storage alloy and reduce significantly rare earth hydrogen-storage alloy or cell negative electrode material production cost be the raw material production hydrogen-storage alloy with the rare earth nickel cobalt (alloy).
Technical solution: the present invention realizes in the following manner: with the rare earth nickel cobalt (alloy) that refines from useless rare earth hydrogen-storage alloy is main raw material(s), and raw-material chemical ingredients is: Ni 65-70%, Co 10-12%, Al 3-5%, Mn 2-4%, RE10-15%, Ti 1-2%; At first detect the rare earth nickel cobalt (alloy) and be cut into branch really with the ICP method, then, determine the amount that element runs off in the rare earth nickel cobalt (alloy) according to the difference of the composition of rare earth nickel cobalt (alloy) and standard hydrogen-storage alloy, find out wherein difference with standard hydrogen-storage alloy element, by adjusting, replenish corresponding alloying element, make the composition range that closes reach standard A B
5The chemical ingredients of type hydrogen-storage alloy is: norium RE33.4%, i49.1%, Co10.4%, Mn5.2%, Al1.9%; Production technique according to the hydrogen-storage alloy of routine is carried out melting.
The rare earth hydrogen-storage alloy of producing or the chemical property of cell negative electrode material reach: discharge capacity value reaches 282mAh/g, and effective hydrogen capacity reaches 0.869wt%.
The present invention can find by comparing traditional processing technology and production technique of the present invention: difference between the two mainly is on the employed starting material.In the rare earth nickel cobalt (alloy) that from useless rare earth hydrogen-storage alloy, refines owing to contain very high cobalt, nickel and rare earth material, so, it is just passable to add or only need add a small amount of these valuable alloying elements in the technology of the present invention, thereby production cost reduces significantly.
The present invention by experiment, the result shows: the 0.2C loading capacity of the rare earth hydrogen-storage alloy of preparing is 282mAh/g, effective hydrogen capacity is 0.869wt%.
Technical process is simple, reasonable, non-environmental-pollution.Its application will make the generation of rare earth hydrogen-storage alloy originally reduce greatly, also will play a positive role for popularizing application rare earth Ni-MH battery from now in an all-round way.
Advantages of simple technological process of the present invention, non-environmental-pollution, cost are low, have realized the regeneration of refuse, are the desirable technology of handling useless rare earth hydrogen-storage alloy at present.
Four, description of drawings
Accompanying drawing is technological process of production figure of the present invention;
Five, embodiment
The present invention is a main raw material(s) with the rare earth nickel cobalt (alloy) that refines from useless rare earth hydrogen-storage alloy, and chemical ingredients is: Ni65-70%, Co 10-12%, Al 3-5%, Mn 2-4%, RE 10-15%, Ti 1-2%; At first, detect the rare earth nickel cobalt (alloy) with the ICP method and be cut into branch really, then, determine the amount that element runs off in the rare earth nickel cobalt (alloy) according to the difference of the composition of rare earth nickel cobalt (alloy) and standard hydrogen-storage alloy, find out wherein that element on this basis with standard hydrogen-storage alloy element difference maximum, adjust, replenish corresponding alloying element, make alloy reach standard A B
5The chemical ingredients of type hydrogen-storage alloy: norium RE33.4%, Ni49.1%, Co10.4%, Mn5.2%, Al1.9%; Then, in vacuum induction furnace, rare earth nickel cobalt (alloy) and various need are put into crucible with the alloy material of adding.The rare earth nickel cobalt (alloy) is gone into the stokehold and must be adopted the method for ball blast or polishing to remove surface scale.Then, vacuumize, switch on begin the fusing.After melting clearly, temperature raising is controlled at 1450 ℃～1550 ℃ with the alloy liquid temp, and smelting time is 10min～35min; Melting is cooled off molten alloy liquid after finishing fast, to generate column crystal.Afterwards, ingot casting becomes granularity less than 200 purpose powder through Mechanical Crushing.Pulverizing is being carried out under anoxybiotic condition.
Claims (2)
1. be the raw material production hydrogen-storage alloy with the rare earth nickel cobalt (alloy), it is characterized in that: with the rare earth nickel cobalt (alloy) that refines from useless rare earth hydrogen-storage alloy is main raw material(s), and chemical ingredients is: Ni 65-70%, Co 10-12%, Al 3-5%, Mn 2-4%, RE10-15%, Ti 1-2%; At first detect the rare earth nickel cobalt (alloy) and be cut into branch really with the ICP method, then, determine the amount that element runs off in the rare earth nickel cobalt (alloy) according to the difference of the composition of rare earth nickel cobalt (alloy) and standard hydrogen-storage alloy, find out wherein difference with standard hydrogen-storage alloy element, by adjusting, replenishing corresponding alloying element, make the composition range of alloy reach standard A B
5The chemical ingredients of type hydrogen-storage alloy: norium RE33.4%, Ni49.1%, Co10.4%, Mn5.2%, Al1.9%; Production technique according to the hydrogen-storage alloy of routine is carried out melting.
2. according to claim 1 is the raw material production hydrogen-storage alloy with the rare earth nickel cobalt (alloy), it is characterized in that: the rare earth hydrogen-storage alloy of production or the chemical property of cell negative electrode material reach: discharge capacity value reaches 282mAh/g, and effective hydrogen capacity reaches 0.869wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100870381A CN101250647A (en) | 2008-03-28 | 2008-03-28 | Production of hydrogen storage alloy using rare earth nickel-cobalt alloy as raw material |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100870381A CN101250647A (en) | 2008-03-28 | 2008-03-28 | Production of hydrogen storage alloy using rare earth nickel-cobalt alloy as raw material |
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| CN101250647A true CN101250647A (en) | 2008-08-27 |
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| CNA2008100870381A Pending CN101250647A (en) | 2008-03-28 | 2008-03-28 | Production of hydrogen storage alloy using rare earth nickel-cobalt alloy as raw material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740768B (en) * | 2008-11-27 | 2012-09-26 | 比亚迪股份有限公司 | Hydrogen storage alloy and preparation method thereof and cathode and battery using same |
| CN107154481A (en) * | 2017-04-28 | 2017-09-12 | 内蒙古科技大学 | Ni MH battery hydrogen-storing alloy as electrode and preparation method thereof |
-
2008
- 2008-03-28 CN CNA2008100870381A patent/CN101250647A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740768B (en) * | 2008-11-27 | 2012-09-26 | 比亚迪股份有限公司 | Hydrogen storage alloy and preparation method thereof and cathode and battery using same |
| CN107154481A (en) * | 2017-04-28 | 2017-09-12 | 内蒙古科技大学 | Ni MH battery hydrogen-storing alloy as electrode and preparation method thereof |
| CN107154481B (en) * | 2017-04-28 | 2020-05-19 | 内蒙古科技大学 | Hydrogen storage electrode alloy for Ni-MH battery and preparation method thereof |
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Open date: 20080827 |