CN109671904A - A kind of zinc-silver oxide cell zinc electrode and preparation method thereof - Google Patents
A kind of zinc-silver oxide cell zinc electrode and preparation method thereof Download PDFInfo
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- CN109671904A CN109671904A CN201811417398.3A CN201811417398A CN109671904A CN 109671904 A CN109671904 A CN 109671904A CN 201811417398 A CN201811417398 A CN 201811417398A CN 109671904 A CN109671904 A CN 109671904A
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- zinc
- powder
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- silver oxide
- electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to a kind of zinc-silver oxide cell zinc electrodes, including the active material being made of zinc powder, oxide powder and zinc and additive, the additive is mercury chloride and/or mercuric acetate, wherein the mass ratio of zinc powder, oxide powder and zinc and additive is 20-25:73-79.5:0.5-2.The present invention also provides a kind of preparation methods of zinc-silver oxide cell zinc electrode, comprising steps of S1, is mixed to get blended zinc powder in closing powder machine for zinc powder and oxide powder and zinc；Additive is dissolved in polyvinyl alcohol water solution, is then added in blended zinc powder and reconciles into paste；S2 obtains zinc-silver oxide cell zinc electrode through smear, drying and tableting process.The present invention is by replacing with mercury chloride and/or mercuric acetate for additive, the evenly dispersed of molecular level is realized since it can be dissolved in polyvinyl alcohol water solution, therefore improve the dispersing uniformity of mercury by chemical dispersion, its service efficiency is improved, to reduce the dosage of mercury under the premise of not influencing battery performance.
Description
Technical field
The present invention relates to zinc-silver oxide cell, relate more specifically to a kind of zinc-silver oxide cell zinc electrode and preparation method thereof.
Background technique
Zinc-silver oxide cell has specific energy high, and specific power is big, can be large current discharge, discharging voltage balance, and voltage accuracy is high, can
By property, safety is good the advantages that, be widely used in each field, especially military field, such as guided missile and aerospace craft fly
The specific uses such as machine, submarine.
The same with other electrochmical power sources, zinc-silver oxide cell is by anode, cathode, diaphragm, electrolyte and shell and some auxiliaries
Composition.Wherein, cathode is zinc electrode, and main active substances are usually made of zinc powder, oxide powder and zinc and additive, wherein should
Additive is mercury oxide.Applying cream method is to manufacture the main method of zinc electrode, and main includes closing powder-sieving-conjunction cream-smear-drying-
The processes such as tabletting-drying-sleeve-penetrating, are made negative plate.Zinc powder, oxide powder and zinc and mercury oxide are directly placed by conjunction powder therein
It closes and is mixed in powder machine, polyvinyl alcohol water solution is then added and reconciles into paste.But powder process is closed at present it is difficult to ensure that mercury oxide
It is evenly dispersed.If the content of mercury is less in some regional area, zinc overdose, then just have part zinc atom not by
Amalgamation leads to evolving hydrogen reaction.
Summary of the invention
In order to solve the problems, such as it is above-mentioned it is of the existing technology be difficult to ensure the evenly dispersed of mercury oxide, the present invention is directed to mention
For a kind of zinc-silver oxide cell zinc electrode and preparation method thereof.
Zinc-silver oxide cell zinc electrode provided by the invention, including the active matter being made of zinc powder, oxide powder and zinc and additive
Matter, the additive are mercury chloride and/or mercuric acetate, wherein the mass ratio of zinc powder, oxide powder and zinc and additive is 20-25:73-
79.5:0.5-2.
Preferably, the mass ratio of zinc powder, oxide powder and zinc and additive is 25:73.5-74:1-1.5.
Preferably, additive is dispersed in zinc-silver oxide cell zinc electrode using the method for chemical dispersion.
The present invention also provides a kind of preparation method of zinc-silver oxide cell zinc electrode, comprising steps of S1, by zinc powder and zinc oxide
Powder is mixed to get blended zinc powder in closing powder machine；Additive is dissolved in polyvinyl alcohol water solution, mixing zinc is then added to
Paste is reconciled into powder, wherein the mass ratio of zinc powder, oxide powder and zinc and additive is 20-25:73-79.5:0.5-2；S2, warp
Smear, drying and tableting process obtain zinc-silver oxide cell zinc electrode.
Preferably, in step sl, the amount that polyvinyl alcohol is added in every 100g zinc powder, oxide powder and zinc and additive is 35-
40ml。
Preferably, in step sl, zinc powder and oxide powder and zinc are closing the incorporation time in powder machine as 8-12min.It should manage
Solution, excessively prolonged mixing will cause the oxidation of zinc powder.
The active material of zinc-silver oxide cell provided by the invention zinc electrode is made of zinc powder, oxide powder and zinc and additive,
In, zinc powder is used to increase the electric conductivity of negative material, improves the coulombic efficiency of cathode；Additive is the chlorine for making Zinc Amalgamation
Change mercury and/or mercuric acetate, on the one hand improve the overpotential of hydrogen, reduce the corrosion rate of zinc, improves the wet of Charging state zinc electrode and put
Characteristic is set, on the other hand, the surface nature of zinc particle can be improved, increase its active surface area, improve the utilization rate of zinc.Obviously,
Each component in active material all has a certain impact to properties of product, therefore the ratio of control each component and balanced mixing are
It is highly important.The present invention is replaced by controlling the ratio of each component in 20-25:73-79.5:0.5-2, while by additive
For mercury chloride and/or mercuric acetate, the evenly dispersed of molecular level is realized since it can be dissolved in polyvinyl alcohol water solution, because
This improves the dispersing uniformity of mercury by chemical dispersion, improves its service efficiency, thus in the premise for not influencing battery performance
The lower dosage for reducing mercury.
Specific embodiment
Presently preferred embodiments of the present invention is given below, and is described in detail.
Embodiment 1
The oxide powder and zinc of the zinc powder of 25wt% and 74wt% is added to and is closed in powder machine, incorporation time 10min is mixed
Close zinc powder；1wt% mercury chloride is dissolved in polyvinyl alcohol (PVA) solution, is added in blended zinc powder, wherein every 100g active matter
The amount that polyvinyl alcohol is added in matter is 37ml, reconciles into paste；Again through processes such as smear-drying-tabletting-drying, zinc-silver is obtained
Battery zinc electrode.
Embodiment 2
The oxide powder and zinc of the zinc powder of 25wt% and 73.5wt% is added to and is closed in powder machine, incorporation time 10min is obtained
Blended zinc powder；1.5wt% mercuric acetate is dissolved in polyvinyl alcohol (PVA) solution, is added in blended zinc powder, wherein every 100g is living
Property substance in be added polyvinyl alcohol amount be 38ml, reconcile into paste；Again through processes such as smear-drying-tabletting-drying, obtain
Zinc-silver oxide cell zinc electrode.
Embodiment 3
The oxide powder and zinc of the zinc powder of 20wt% and 79.5wt% is added to and is closed in powder machine, incorporation time 8min is obtained
Blended zinc powder；0.5wt% mercury chloride is dissolved in polyvinyl alcohol (PVA) solution, is added in blended zinc powder, wherein every 100g is living
Property substance in be added polyvinyl alcohol amount be 35ml, reconcile into paste；Again through processes such as smear-drying-tabletting-drying, obtain
Zinc-silver oxide cell zinc electrode.
Embodiment 4
The oxide powder and zinc of the zinc powder of 25wt% and 73wt% is added to and is closed in powder machine, incorporation time 12min is mixed
Close zinc powder；2wt% mercuric acetate is dissolved in polyvinyl alcohol (PVA) solution, is added in blended zinc powder, wherein every 100g active matter
The amount that polyvinyl alcohol is added in matter is 40ml, reconciles into paste；Again through processes such as smear-drying-tabletting-drying, zinc-silver is obtained
Battery zinc electrode.
Comparative example 1
The oxide powder and zinc of the zinc powder of 25wt% and 74wt% is added to and is closed in powder machine, incorporation time 10min is mixed
Close zinc powder；1wt% mercuric nitrate is dissolved in polyvinyl alcohol (PVA) solution.At this point, mercuric nitrate hydrolyzes rapidly in water, it is raw
At Hg3O2(NO3)2·2H2The precipitating of O is unable to get zinc-silver oxide cell zinc electrode.
Comparative example 2
The oxide powder and zinc of the zinc powder of 25wt% and 73.5wt% is added to and is closed in powder machine, incorporation time 10min is obtained
Blended zinc powder；1.5wt% mercuric sulfate is dissolved in polyvinyl alcohol (PVA) solution.At this point, mercuric sulfate is in water, especially adding
In hot situation, it is decomposed to form basic salt and sulfuric acid, is unable to get zinc-silver oxide cell zinc electrode.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within the claims of the invention patent.The not detailed description of the present invention is
Routine techniques content.
Claims (6)
1. a kind of zinc-silver oxide cell zinc electrode, including the active material being made of zinc powder, oxide powder and zinc and additive, feature exists
In the additive is mercury chloride and/or mercuric acetate, wherein the mass ratio of zinc powder, oxide powder and zinc and additive is 20-25:73-
79.5:0.5-2.
2. zinc-silver oxide cell zinc electrode according to claim 1, which is characterized in that zinc powder, oxide powder and zinc and additive
Mass ratio is 25:73.5-74:1-1.5.
3. zinc-silver oxide cell zinc electrode according to claim 1, which is characterized in that the method that additive uses chemical dispersion
It is dispersed in zinc-silver oxide cell zinc electrode.
4. a kind of preparation method of zinc-silver oxide cell zinc electrode, which is characterized in that the method comprising the steps of:
Zinc powder and oxide powder and zinc are mixed to get blended zinc powder in closing powder machine by S1；It is water-soluble that additive is dissolved in polyvinyl alcohol
It in liquid, is then added in blended zinc powder and reconciles into paste, wherein the mass ratio of zinc powder, oxide powder and zinc and additive is 20-
25:73-79.5:0.5-2；
S2 obtains zinc-silver oxide cell zinc electrode through smear, drying and tableting process.
5. the preparation method according to claim 4, which is characterized in that in step sl, every 100g zinc powder, oxide powder and zinc and
The amount that polyvinyl alcohol is added in additive is 35-40ml.
6. the preparation method according to claim 4, which is characterized in that in step sl, zinc powder and oxide powder and zinc are closing powder
Incorporation time in machine is 8-12min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417398.3A CN109671904A (en) | 2018-11-26 | 2018-11-26 | A kind of zinc-silver oxide cell zinc electrode and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417398.3A CN109671904A (en) | 2018-11-26 | 2018-11-26 | A kind of zinc-silver oxide cell zinc electrode and preparation method thereof |
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| CN109671904A true CN109671904A (en) | 2019-04-23 |
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| CN201811417398.3A Pending CN109671904A (en) | 2018-11-26 | 2018-11-26 | A kind of zinc-silver oxide cell zinc electrode and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406007A (en) * | 1972-11-03 | 1975-09-10 | Comp Generale Electricite | Process for the preparation of electrodes for electrochemical cells |
| JPS58188057A (en) * | 1982-04-27 | 1983-11-02 | Citizen Watch Co Ltd | Manufacture of amalgamated zinc for battery |
| CN102496698A (en) * | 2011-11-29 | 2012-06-13 | 中国电子科技集团公司第十八研究所 | Active substance granulation method used for zinc electrode |
-
2018
- 2018-11-26 CN CN201811417398.3A patent/CN109671904A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406007A (en) * | 1972-11-03 | 1975-09-10 | Comp Generale Electricite | Process for the preparation of electrodes for electrochemical cells |
| JPS58188057A (en) * | 1982-04-27 | 1983-11-02 | Citizen Watch Co Ltd | Manufacture of amalgamated zinc for battery |
| CN102496698A (en) * | 2011-11-29 | 2012-06-13 | 中国电子科技集团公司第十八研究所 | Active substance granulation method used for zinc electrode |
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Application publication date: 20190423 |