CN1292577A - Conductive electrochemical active material and its production method - Google Patents
Conductive electrochemical active material and its production method Download PDFInfo
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- CN1292577A CN1292577A CN991215958A CN99121595A CN1292577A CN 1292577 A CN1292577 A CN 1292577A CN 991215958 A CN991215958 A CN 991215958A CN 99121595 A CN99121595 A CN 99121595A CN 1292577 A CN1292577 A CN 1292577A
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- hydroxide
- active material
- electrochemical active
- conductive electrochemical
- metal
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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 present invention discloses a conductive type electrochemical active material and its preparation method. It is characterized by adopting multilayer surface treatment method to form metal layer, microporous metal layer, hydroxide layer and alkali metal or alkaline-earth metal layer multilayer covering structure outside of nickel hydroxide, and the adoption of said multilayer surface treatment method can prevent the conductive CoOOH on the surface of nickel hydroxide from diffusing in its interior when it is multiply-charged and discharged, so that it can prevent the conductivity of its surface from reducing, improve corrosion-resisting property and implement high conductivity and high capacity requirements.
Description
The present invention relates to a kind of conductive electrochemical active material, its manufacture method and the application aspect green energy resource thereof, conductive electrochemical active material and manufacture method thereof especially for the Ni-MH battery pole piece belong to field of batteries.
In ambipolar Ni-MH battery, the conductance of nickel hydroxide positive plate and capacity are vital two performances, make positive plate with coating method, can improve the packing density of active material greatly, but the problem that has the conduction rate variance, therefore how improving the conductivity of ambipolar anode of nickel-metal hydride battery and the utilance of active material to greatest extent, is problem anxious to be solved in the prior art.
The objective of the invention is to be to provide a kind of conductivity type active material with superior electrical conductivity and active material utilization.
A further object of the present invention is to provide a kind of manufacture method with conductive electrochemical active material of superior electrical conductivity and active material utilization.
Another object of the present invention is to provide the application of above-mentioned material aspect green energy resource.
The technical solution used in the present invention is: for improving conductance, active material utilization and packing density, adopt the multiple-level surface processing method among the present invention, the method that adopts multiple-level surface to handle, can stop repeatedly impulse electricity circulation time, the conduction CoOOH of nickel hydroxide surface is in the diffusion of inside, so just avoid the reduction of surface conductance performance, improved corrosion resistance; The requirement of high conductivity and high power capacity is achieved.
It is the nickel hydroxide of 0.5-30 micron that the present invention adopts particle mean size, through metal level (1), micropore metal layer (2), hydroxide layer (3) and alkali metal or alkaline-earth metal layer (4) multilayer cladding structure, obtains conductive electrochemical active material, as shown in Figure 1.
Above-mentioned nickel hydroxide can be sphere, oblate spheroid, spheroid shape etc., or is fit to other shape of the present invention.
The metal of wherein above-mentioned metal layers is selected from zinc, iron, cobalt, nickel, manganese, vanadium is any or two or more mixture, and is fit to other metal of the present invention, preferable alloy zinc or manganese.
The micropore metal of above-mentioned micropore metal layer is selected from zinc, iron, cobalt, nickel, manganese, vanadium is any or two or more mixture, and is fit to other micropore metal of the present invention, preferred microporous nickel or cobalt.
Hydroxide in the above-mentioned hydroxide layer is selected from zinc hydroxide, iron hydroxide, cobalt hydroxide, nickel hydroxide, manganous hydroxide, vanadium hydroxide is any or two or more mixture, and suitable other hydroxide of the present invention, preferred zinc hydroxide or vanadium hydroxide.
Above-mentioned alkali metal or alkaline-earth metal layer are the composite beds of alkali metal or alkaline-earth metal, and wherein the content of alkali metal or alkaline-earth metal is 0.5-10%, and preferred sodium, potassium is any or its mixture.
The manufacture method of above-mentioned conductive electrochemical active material is: the method that adopts multiple-level surface to handle respectively can be a kind of or its combination of electro-deposition, electrophoresis, plating, spraying, blade coating, coating, also can adopt to be fit to other method of the present invention.
Conductive electrochemical active material of the present invention can be used to make the electrode slice of battery.
Adopting the conductive electrochemical active material of the inventive method preparation, its electric conductivity (specific conductivity) can reach＜and 2 * 10
-6* centimetre of ohm, active material utilization＞95%.
Describe the present invention in detail below in conjunction with embodiment.
Embodiment
Present embodiment is raw materials used to be 5 microns ball-shape nickel hydroxide for particle mean size, adopt electro-plating method to form the zinc layer at ball shape nickel hydroxide surface, Means of Electrodeposition forms the Microporous Nickel layer outside the zinc layer, Means of Electrodeposition forms zinc hydroxide again, at last, outside it, forming the sodium layer contain sodium 1% again, the conductive electrochemical active material of gained, its electric conductivity (specific conductivity) can reach＜and 2 * 10
-6* centimetre of ohm, active material utilization＞95%.
Claims (9)
1. conductive electrochemical active material is characterized in that the method that adopts multiple-level surface to handle forming metal level (1), micropore metal layer (2), hydroxide layer (3) and alkali metal or alkaline-earth metal layer (4) multilayer and clad structure outside nickel hydroxide.
2. conductive electrochemical active material according to claim 1 is characterized in that nickel hydroxide can be sphere, oblate spheroid, spheroid shape etc.,
3. conductive electrochemical active material according to claim 1 is characterized in that the metal of metal layers is selected from zinc, iron, cobalt, nickel, manganese, vanadium is any or two or more mixture, preferable alloy zinc or manganese.
4. conductive electrochemical active material according to claim 1 is characterized in that the micropore metal of micropore metal layer is selected from zinc, iron, cobalt, nickel, manganese, vanadium is any or two or more mixture, preferred microporous nickel or cobalt.
5. conductive electrochemical active material according to claim 1, it is characterized in that hydroxide in the hydroxide layer is selected from zinc hydroxide, iron hydroxide, cobalt hydroxide, nickel hydroxide, manganous hydroxide, vanadium hydroxide is any or two or more mixture, preferred zinc hydroxide or vanadium hydroxide.
6. conductive electrochemical active material according to claim 1, it is characterized in that: alkali metal or alkaline-earth metal layer are the composite beds of alkali metal or alkaline-earth metal, wherein the content of alkali metal or alkaline-earth metal is 0.5-10%, and preferred sodium, potassium is any or its mixture.
7. the manufacture method of conductive electrochemical active material is, it is characterized by the method that adopts multiple-level surface to handle respectively, can be a kind of or its combination of electro-deposition, electrophoresis, plating, spraying, blade coating, coating.
8. conductive electrochemical active material according to claim 1 is characterized in that: electric conductivity (specific conductivity) can reach＜and 2 * 10
-6* centimetre of ohm, active material utilization＞95%.
9. conductive electrochemical active material is characterized in that being used to make the pole piece of battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN991215958A CN1292577A (en) | 1999-10-09 | 1999-10-09 | Conductive electrochemical active material and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN991215958A CN1292577A (en) | 1999-10-09 | 1999-10-09 | Conductive electrochemical active material and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1292577A true CN1292577A (en) | 2001-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN991215958A Pending CN1292577A (en) | 1999-10-09 | 1999-10-09 | Conductive electrochemical active material and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1292577A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320681C (en) * | 2005-05-31 | 2007-06-06 | 深圳市豪鹏科技有限公司 | Long time stored nickel-hydrogen battery and mfg. method thereof |
| CN102806033A (en) * | 2011-06-03 | 2012-12-05 | 丰田自动车株式会社 | Treatment apparatus and treatment method |
-
1999
- 1999-10-09 CN CN991215958A patent/CN1292577A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320681C (en) * | 2005-05-31 | 2007-06-06 | 深圳市豪鹏科技有限公司 | Long time stored nickel-hydrogen battery and mfg. method thereof |
| CN102806033A (en) * | 2011-06-03 | 2012-12-05 | 丰田自动车株式会社 | Treatment apparatus and treatment method |
| CN102806033B (en) * | 2011-06-03 | 2014-08-27 | 丰田自动车株式会社 | Treatment apparatus and treatment method |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |