CN1462083A - Preparation method of alkaline secondary zinc battery negative electrode active substance - Google Patents
Preparation method of alkaline secondary zinc battery negative electrode active substance Download PDFInfo
- Publication number
- CN1462083A CN1462083A CN02120728A CN02120728A CN1462083A CN 1462083 A CN1462083 A CN 1462083A CN 02120728 A CN02120728 A CN 02120728A CN 02120728 A CN02120728 A CN 02120728A CN 1462083 A CN1462083 A CN 1462083A
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- CN
- China
- Prior art keywords
- preparation
- zno
- negative electrode
- active substance
- electrode active
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
An active substance (calcium zincate) for the negative electrode (Zn) of secondary alkaline battery is prepared from ZnO and Ca(OH)2 through proportioning, adding them to KOH solution, stirring at 75-95 deg.C for at least 72 hr. ageing at 75-95 deg.c for at least 60 hr, cooling, filtering, washing, baking at 105-110 deg.c, grinding and sieving by 300 meshes.
Description
Affiliated technical field
New material, new energy field
Background technology
As negative pole specific energy height, pollution-free, reserves are abundant in the earth's crust in battery for Zn, but repeatedly discharge and recharge rear electrode distortion and penetrate barrier film because of forming dendrite, battery internal short-circuit and losing efficacy.So the filling property of Zn electrode is the problems of people in research always.
Zn electrode deformation and dendritic growth main cause are Zn discharging product Zn (OH)
2In alkaline solution, form Zn (OH)
4 2-Ion and dissolving.Actual during charging is the electro-deposition of Zn, forms dendrite.Zn (OH)
4 2-Heavier and sink, charge and discharge often the back form thick down thin, electrode deformation.
One of way that solves is to be prepared into zincic acid calcium crystal Ca (Zn (OH)
3)
22H
2O replaces ZnO as the Zn electrode active material.Form Zn during charging, still form zincic acid calcium during discharge and be insoluble in the aqueous slkali, to improve the filling property of Zn electrode.
The patent U.S.P 5863676 that the Charkey Allen of U.S. ERC company 1997.8 delivers has proposed the preparation method of zincic acid calcium.But the zincic acid calcium content that obtains has only 40%.Wuhan University is in that " article that battery (Battery Bimonthly) calendar year 2001 Vol 31 No.2 deliver is in room temperature preparation.
Summary of the invention
This patent is in the preparation of the temperature more than＞75 ℃, best temperature preparation more than 90 ℃.Must ageing under＞75 ℃ of situations, allow crystal growth.Bake out temperature needn't be less than 80 ℃.The sample that makes is a monoclinic system through the X diffraction analysis, a
0=6.384 , b
0=10.76 , c
0=5.759 , unit cell molecular number 2, density 2.60, content 95%.During preparation if temperature＞120 ℃, because of local overheating is decomposed.
ZnO in KOH solution solubilized and with KOH concentration increase and solubility increase, but in that to be lower than under 75 ℃ the situation dissolution velocity very slow, be impossible dissolving on dynamics.Only ZnO is dissolved in the KOH solution when higher temperature.Quickened Ca (OH) like this
2With the reaction of ZnO, form Ca (OH)
22Zn (OH)
22H
2The O precipitation, ZnO continues dissolving.Be Ca (OH) at a lower temperature
2Particle contacts with the ZnO particle and reacts, and obviously reacts insufficient.
Because Ca (OH)
22Zn (OH)
22H
2O parses the crystallization water can not dividing below 120 ℃, needn't dry under 105-110 ℃ of environment less than 80 ℃ when drying, removes adsorbed water.
It is also fine to be mixed with Zn electrode forming effect with the zincic acid calcium (content 〉=95%) of this preparation and additive and binding agent.Needn't add ZnO in addition and improve the electrode forming situation.Other adds ZnO and still can form dendrite and make electrode deformation in charge and discharge process.
Embodiment
Taking by weighing ZnO 29.8g, to join temperature be in 85 ℃ the KOH solution of weight ratio 25%, to be stirred to the ZnO dissolving, and stirring adds self-control Ca (OH) down
280g and 175g ZnO.Keep 85 ℃ of temperature, stirs and stop after 72 hours stirring, keep 85 ℃ of ageings of temperature 60 hours, cooling is filtered, and is washed till neutrality (PH=7) with deionized water, and 105～110 ℃ of oven dry get zincic acid calcium Ca (OH)
22Zn (OH)
22H
2O, analyzing content is 95%.
Claims (5)
1. the preparation method of alkaline secondary zinc battery negative electrode active substance: with ZnO and Ca (OH)
2Be raw material, put into KOH solution, stir more than 72 hours, temperature controlling range is 75 ℃-100 ℃, more than the ageing 60h, and cooling,, filter, be washed till neutrality, 105 ℃ of-110 ℃ of oven dry, grind, cross 300 orders.
2. by used ZnO of claim 1 and Ca (OH)
2Ingredient requirement contains Fe amount≤5PPm, granularity≤44um.
3. must be by claim 1 preparation temperature greater than 75 ℃.
4. must be under 〉=75 ℃ of situations more than the ageing 60h by claim 1.
5. the zincic acid calcium that makes can be used for making the alkali secondary negative electrode as active material, needn't mix use with ZnO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02120728A CN1462083A (en) | 2002-05-30 | 2002-05-30 | Preparation method of alkaline secondary zinc battery negative electrode active substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02120728A CN1462083A (en) | 2002-05-30 | 2002-05-30 | Preparation method of alkaline secondary zinc battery negative electrode active substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1462083A true CN1462083A (en) | 2003-12-17 |
Family
ID=29742528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02120728A Withdrawn CN1462083A (en) | 2002-05-30 | 2002-05-30 | Preparation method of alkaline secondary zinc battery negative electrode active substance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1462083A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006032208A1 (en) * | 2004-09-24 | 2006-03-30 | Byd Company Limited | Methods for fabricating calcium zincate for negative electrodes |
| CN1322613C (en) * | 2005-09-28 | 2007-06-20 | 浙江工业大学 | Cathode material for alkaline secondary zinc electrode and its preparing method |
| CN1333479C (en) * | 2005-09-28 | 2007-08-22 | 浙江工业大学 | Chargeable zinc electrode additive, and its preparing method and use |
| CN101928036A (en) * | 2010-09-08 | 2010-12-29 | 童孟良 | Microwave preparation method of zinc-nickel battery anode material calcium zincate |
| CN102774873B (en) * | 2007-04-19 | 2014-06-04 | 北京三聚环保新材料股份有限公司 | Preparation method of calcium zincate and calcium zincate normal temperature desulfurizing agents |
| CN110386619A (en) * | 2019-06-17 | 2019-10-29 | 昆明冶金研究院 | A kind of preparation method of the ultra-fine calcium zincates crystal of zinc battery |
-
2002
- 2002-05-30 CN CN02120728A patent/CN1462083A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006032208A1 (en) * | 2004-09-24 | 2006-03-30 | Byd Company Limited | Methods for fabricating calcium zincate for negative electrodes |
| CN100355120C (en) * | 2004-09-24 | 2007-12-12 | 比亚迪股份有限公司 | Preparation method of alkaline storage battery negative electrode active material calcium zincate |
| CN1322613C (en) * | 2005-09-28 | 2007-06-20 | 浙江工业大学 | Cathode material for alkaline secondary zinc electrode and its preparing method |
| CN1333479C (en) * | 2005-09-28 | 2007-08-22 | 浙江工业大学 | Chargeable zinc electrode additive, and its preparing method and use |
| CN102774873B (en) * | 2007-04-19 | 2014-06-04 | 北京三聚环保新材料股份有限公司 | Preparation method of calcium zincate and calcium zincate normal temperature desulfurizing agents |
| CN101928036A (en) * | 2010-09-08 | 2010-12-29 | 童孟良 | Microwave preparation method of zinc-nickel battery anode material calcium zincate |
| CN110386619A (en) * | 2019-06-17 | 2019-10-29 | 昆明冶金研究院 | A kind of preparation method of the ultra-fine calcium zincates crystal of zinc battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |