CN1111921C - Recovering method of defective positive and negative pole material of secondary nickel-hydrogen battery - Google Patents
Recovering method of defective positive and negative pole material of secondary nickel-hydrogen battery Download PDFInfo
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- CN1111921C CN1111921C CN00132164A CN00132164A CN1111921C CN 1111921 C CN1111921 C CN 1111921C CN 00132164 A CN00132164 A CN 00132164A CN 00132164 A CN00132164 A CN 00132164A CN 1111921 C CN1111921 C CN 1111921C
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- nickel
- active material
- positive electrode
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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Abstract
The present invention relates to the recycle and the reuse of a nickel-hydrogen secondary battery. A positive electrode fragment and a negative electrode fragment are respectively crushed in a mechanical method; a positive electrode active material, a negative electrode active material, an addition agent (electric conducting agent) and a binding agent which adhere to foamed nickel and a nickel plated perforated steel tape are taken off in methods such as ultrasonic wave oscillation or mechanical stirring, etc., are washed by distilled water to remove part of the water soluble binding agent and are sucked, filtered and dried under the vacuum condition to respectively obtain a positive electrode raw material and a negative electrode raw material which have superior performance. The present invention solves the problem of leftover material treatment caused in the process that a battery manufacturer manufactures nickel-hydrogen secondary batteries, and in addition, the present invention enables the positive electrode active material and the negative electrode active material to be reused. Thus, the present invention has important significance for both battery cost reduction and environment pollution prevention.
Description
Affiliated technical field
The present invention relates to the recycling of nickel-hydrogen secondary cell manufacturing materials.
Background technology
In recent years, along with the universal day by day and electric bicycle of household electrical appliance, mobile communication, audio and video equipment, the use of electric automobile, the demand of battery is growing, and nickel-hydrogen secondary cell occupies consequence with advantages such as its cost are low, pollution-free, have extended cycle life in Battery Market.Be meeting the market requirement, the output of its Ni-MH battery is also constantly improving in battery manufacturing firm, therefore, in the Ni-MH battery manufacture process, its both positive and negative polarity corner defective material also sharply increases, and how to handle these corner defective materials, also just becomes the problem that each battery manufacturing firm pays close attention to.Most producers discard to undersell to relevant unit or with it these both positive and negative polarity corner defective materials, and this not only can make the economic benefit of battery producer be subjected to very big loss, but also can cause a large amount of wastings of resources and environmental pollution.
Summary of the invention
The recovery method that the purpose of this invention is to provide a kind of defective positive and negative pole material of secondary nickel-hydrogen battery.The both positive and negative polarity corner defective material of so-called nickel-hydrogen secondary cell comprises: negative pole is the hydrogen-storage alloy powder (MmNi that adheres on nickel plated steel strip or nickel foam substrate and the matrix
5-x-y-zCo
xMn
yAl
z, 0≤x≤0.75,0≤y≤0.4,0≤z≤0.3), conductive agent (nickel powder, cobalt powder, carbon black etc.), binding agent; The ball-type Ni (OH) that just very adheres on nickel foam substrate and the matrix
2, conductive agent (CoO, Co (OH)
2, Co powder etc.), binding agent.Technology of the present invention is simple, and production cost is low, can make the active material in both positive and negative polarity relic and the corner defective material obtain farthest utilizing again, economizes on resources, and reduces environmental pollution.
Concrete implementation step of the present invention is, under the normal temperature, respectively both positive and negative polarity relic and corner defective material are adopted mechanical means (cutting or pulverizing) fragmentation, change in the distilled water, will be with methods such as mechanical agitation or ultrasonic oscillations attached to the both positive and negative polarity active material on nickel foam or the nickel plating perforated steel ribbon, additive (conductive agent), binding agent takes off, suction filtration, wash with distilled water, remove water-soluble binder, be to dry under the condition of 0.1～0.09Mpa in 30～80 ℃ of temperature and vacuum degree, isolate both positive and negative polarity active material and additive and insoluble binding agent with mechanical means again, and then utilize these materials to make the both positive and negative polarity of battery more again.
Good effect of the present invention is: (1) whole process of production technology is simple, and production cost is low, the economic benefit height.(2) the both positive and negative polarity active material that reclaims with this method etc. is identical with the raw-material chemical property of both positive and negative polarity of making nickel-hydrogen secondary cell.(3) this method can make active material in both positive and negative polarity relic and the corner defective material etc. obtain farthest utilizing again.(4) make battery production producer avoid unnecessary economic loss as far as possible.(5) this method can not cause any pollution to environment.
Substantive distinguishing features that the present invention gives prominence to and marked improvement can be embodied from following embodiment.But they can not impose any restrictions the present invention.
Description of drawings
Fig. 1 reclaims negative alloy powder XRD structure chart.
Fig. 2 reclaims alloyed powder and former alloyed powder contrast discharge curve.
Fig. 3 reclaims anodal Ni (OH)
2And the XRD structure chart of active additive CoO.
Fig. 4 reclaims positive electrode and former positive discharge correlation curve.
Embodiment
Embodiment 1:
Get with the perforation nickel plated steel strip be the negative pole corner defective material 240g of matrix, carry out machine cuts after, make alloyed powder (MmNi with the mechanical agitation method
5-x-y-zCo
xMn
yAl
z, 0≤x≤0.75,0≤y≤0.4,0≤z≤0.3), conductive agent carbon black, binding agent separate with nickel plated steel strip.Wash the mixture of removing nickel plated steel strip with distilled water, remove water-soluble binder, carry out suction filtration then, and dry under the condition that 80 ℃ of temperature vacuum degrees are 0.09MPa, its mixing quality is 188g.Remove carbon black and insoluble binding agent with the mechanical flotation method, finally obtain the 140g alloyed powder, account for 74.5% of said mixture matter quality.XRD structure chart such as Fig. 1 of products obtained therefrom.Former alloyed powder, recovery alloyed powder are mixed by 1: 4 with nickel powder respectively, be pressed into circular electrode, 0.1C charging 15 hours, 0.2C is discharged to electrode potential and is-740mV (vs.Hg/HgO/6M KOH electrode), and its contrast discharge curve is as shown in Figure 2.With the negative alloy powder of this method recycling, its chemical property and former alloyed powder are very approaching.
Embodiment 2:
Get foam nickel anode corner defective material 35g, carry out Mechanical Crushing after, will be with the ultrasonic oscillation method attached to the Ni on the nickel foam (OH)
2, CoO and binding agent take off, and washs said mixture with distilled water, removes water-soluble binder.Suction filtration, and under the condition that 80 ℃ of temperature vacuum degrees are 0.09MPa, dry, its mixing quality is 29.5g.Remove insoluble binding agent with mechanical means, sieve, obtain 25gNi (OH)
2With the mixture of CoO, the rate of recovery of positive active material is 84.7%.Reclaim XRD structure chart such as Fig. 3 of product.With the Ni (OH) that obtains
2Make positive plate and former positive plate with the mixture of CoO and do contrast and discharge and recharge experiment, 0.1C charging 15 hours, 0.2C is discharged to 100mV (vs.Hg/HgO/6M KOH electrode), and its result is as shown in Figure 4.Fig. 4 is positive pole and the former positive discharge correlation curve that salvage material makes.With the positive electrode that this method reclaims, its chemical property is close with former positive electrode.
Claims (1)
1, a kind of recovery method of defective positive and negative pole material of secondary nickel-hydrogen battery is characterized in that comprising the steps:
(1) under the normal temperature both positive and negative polarity corner defective material is used the mechanical means fragmentation;
(2) with the method for mechanical agitation or ultrasonic oscillation the material to be recycled in the both positive and negative polarity is taken off;
(3) active material that takes off is washed with distilled water, remove the part water-soluble binder, suction filtration is dried under the condition that 30～80 ℃ of temperature vacuum degrees are 0.1～0.09MPa;
(4), remove the insoluble binding agent in both positive and negative polarity active material and the additive with mechanical flotation or method for screening;
(5) cross 74 μ m sieve and promptly get recycling positive and negative pole material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00132164A CN1111921C (en) | 2000-12-19 | 2000-12-19 | Recovering method of defective positive and negative pole material of secondary nickel-hydrogen battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00132164A CN1111921C (en) | 2000-12-19 | 2000-12-19 | Recovering method of defective positive and negative pole material of secondary nickel-hydrogen battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1295354A CN1295354A (en) | 2001-05-16 |
| CN1111921C true CN1111921C (en) | 2003-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00132164A Expired - Fee Related CN1111921C (en) | 2000-12-19 | 2000-12-19 | Recovering method of defective positive and negative pole material of secondary nickel-hydrogen battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111921C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154757B (en) * | 2006-09-29 | 2010-10-06 | 比亚迪股份有限公司 | Process for recovering carbon materials of battery cathode |
| CN101383441B (en) * | 2007-09-06 | 2011-10-26 | 深圳市比克电池有限公司 | Synthetic recovering method for positive pole waste tablet from ferric phosphate lithium cell |
| CN101242016B (en) * | 2008-02-29 | 2011-04-27 | 东南大学 | Resource separation and recycling production method for waste nickel hydrogen battery content |
| CN108579896B (en) * | 2018-05-31 | 2019-01-22 | 鉴奕霖 | A kind of old and useless battery treatment device |
| CN108767286A (en) * | 2018-06-26 | 2018-11-06 | 包头昊明稀土新电源科技有限公司 | Waste and old rare earth new power collector recovery method and device |
| CN112599878B (en) * | 2020-12-14 | 2022-04-19 | 中国科学院福建物质结构研究所 | Treatment method and application of electrode waste |
-
2000
- 2000-12-19 CN CN00132164A patent/CN1111921C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1295354A (en) | 2001-05-16 |
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