CN103700868A - Magnalium alloy air cell and preparation method of catalyst layer thereof - Google Patents
Magnalium alloy air cell and preparation method of catalyst layer thereof Download PDFInfo
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- CN103700868A CN103700868A CN201410017216.9A CN201410017216A CN103700868A CN 103700868 A CN103700868 A CN 103700868A CN 201410017216 A CN201410017216 A CN 201410017216A CN 103700868 A CN103700868 A CN 103700868A
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- air cell
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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
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
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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
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
- H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
-
- 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
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
Abstract
The invention discloses a magnalium alloy air cell and a preparation method of a catalyst layer thereof. The preparation method of the catalyst layer comprises the following steps: adding adjuvants such as salt, a surfactant, a stabilizer, an adhesive, a chelating agent or a complexing agent into a catalyst and a carbon material; secondly, preparing the materials into paste; adjusting a pH (Potential of Hydrogen) value to be nearly neutral by using organic weak acid or base; coating the materials on a non-woven fabric; and drying to obtain a catalyst layer. The magnalium alloy air cell comprises the catalyst layer, a magnalium alloy, a water absorbing layer and a current collector, wherein the magnalium alloy, the water absorbing layer, the catalyst layer and the current collector are overlapped to form the magnalium alloy air cell unit; and the plurality of units are connected in series or parallel, so as to form a magnalium alloy air cell pack. The catalyst layer of the magnalium alloy air cell provided by the invention has good breathability; the water absorbing property of the catalyst surface is strong; the catalyzing effect is good; the convenience in use can be realized; the magnalium alloy air cell pack can be used by wetting with water when supplying power to the electric devices.
Description
Technical field
The present invention relates to a kind of metal-air cell, relate in particular to a kind of magnadure air cell, and the preparation method of this magnadure air cell Catalytic Layer.
Background technology
From the periodic table of elements, lithium becomes diagonal relation with magnesium, and lithium is very similar to the character between magnesium, lithium battery can to make the battery that energy density is the highest be due to two reasons, the one, in all metals, the electromotive force of lithium is the most negative; The 2nd, the releasable electric charge of unit mass of lithium is maximum.But there is the development that has a bit limited lithium, because the abundance of lithium in upper crust is only 20ppm, expensive, and the abundance of magnesium in upper crust is 1.32%, is approximately 660 times of lithium content, can be described as nexhaustible, and cheap.The standard electrode EMF of magnesium is also very high in addition, reach 2.36V, and the releasable quantity of electric charge of the unit mass of magnesium ranked second (except beryllium in all metallic elements, the compound of beryllium is generally noxious substance, be of little use), theoretical capacity reaches 2203.2mAh/g, so magnesium cell is a kind of very promising battery, magnesium cell progressively comes into one's own at present, but the research of magnadure air cell is still few.
The chemical property of magnesium is very active, be easy to be corroded, and the activity of metallic aluminium is slightly poor, therefore in the present invention, will adopt magnadure as anode, also can add by doping other active worse metals such as zinc-manganese, to reduce the activity of magnesium, reduce the corrosion rate in air and solution.
As catalyst, although the catalytic performance of platinum very good (as conventional Pt/C electrode), but price is very expensive, described in patent CN101567477A: the negative electrode technology of preparing of finding cheap, efficient oxidation reduction catalyst and research new structure is the focus of current research.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the preparation method of a kind of magnadure air cell and Catalytic Layer thereof.
The technical scheme that the present invention solves the problems of the technologies described above is: a kind of preparation method of magnadure air cell Catalytic Layer, comprises the steps:
(1) surfactant, stabilizer and bonding agent are mixed with respectively to solution by certain concentration;
(2) slaine is mixed with to mixed solution together with chelating agent or complexing agent, if when solution is obvious acidity or alkalescence, can add appropriate weak base or weak acid, pH value is adjusted to and approaches neutrality;
(3) by the adhesive solution dilution of step (1) preparation, and the surfactant solution and stabiliser solution and the slaine of step (2) preparation and the mixed solution of chelating agent or complexing agent that add step (1) to prepare, and stir;
(4) in the mixed liquor of step (3), add carbon material and catalyst, after stirring, add the bonding agent of step (1) preparation, then stir into a paste;
(5) step (4) pastel is coated on nonwoven fabrics, dries and obtain Catalytic Layer at a certain temperature.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, in described slaine, the electromotive force of the simple substance of contained metallic element is lower than magnesium metal, the slaine preferably with this character: the character with the moisture absorption, but moisture absorption can not be too strong, in order to avoid the moisture absorption and cause nature electric discharge in the pole piece of in the end drying, more preferably NaCl or Na
2sO
4, the quality of described slaine is the 0.1%-4% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described catalyst is platinum, platinum alloy, silver, manganese dioxide or metal organic chelate, the quality of described catalyst is the 40%-90% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described carbon material is graphite, activated carbon, conductive carbon or carbon fiber, the quality of described carbon material is the 5%-40% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described surfactant is eicosyl benzene sulfonic acid sodium salt, stearic acid, AEO or tween, the quality of described surfactant is the 0.1%-4% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described stabilizer is sodium carboxymethylcellulose or xanthans, the quality of described stabilizer is the 0.1%-6% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described bonding agent is butadiene-styrene rubber, polytetrafluoroethylene, Kynoar or polyacrylic acid, the quality of described bonding agent is the 0.1%-6% of final dry gained Catalytic Layer quality.
The preparation method of above-mentioned magnadure air cell Catalytic Layer, described chelating agent or complexing agent are ethylenediamine tetra-acetic acid, sal limonis or polyphosphate, they can form chelate or complex compound with magnalium, and can be dissolved in the water: can form Conjugate Acid-Base Pairs with being used for regulating the material of pH, thereby in water, form cushioning liquid, make magnadure air cell in use can not be undue acidity and cause from seriously corroded, can be not too yet alkalescence and cause delay of response, so all can shorten the ETS estimated time of sailing that continues, the quality of described chelating agent or complexing agent is the 1%-10% of final dry gained Catalytic Layer quality.
A magnadure air cell, comprises above-mentioned Catalytic Layer, magnesium alloy, water accepting layer and afflux layer; Described magnesium alloy, water accepting layer, Catalytic Layer and afflux layer superpose successively and form a magnadure air cell unit, and a plurality of units in series or parallel connection form magnadure air cell group, and described afflux layer is copper or silver.
Beneficial effect of the present invention is:
(1) magnadure air cell Catalytic Layer good permeability of the present invention, catalyst surface water absorption is strong, and excellent catalytic effect makes it continuous discharge for a long time;
(2) magnadure air cell of the present invention, makes the wherein required various abundant raw materials of Catalytic Layer, and preparation method is simple;
(3) magnadure air cell of the present invention gets wet and can generate electricity, and convenient and swift, generate output is large, and the duration is long, and after lower voltage, water filling just can improve voltage again again, and continues generating;
(4) magnadure air cell of the present invention stacks magnadure and Catalytic Layer by water accepting layer, not and as its magnesium cell, separate two spaces, do not simplify battery structure, reduced volume, outstanding behaviours, in its portability, is easy to control the break-make of electrical appliance.
Accompanying drawing explanation
Fig. 1 is the time current curve chart that flows through electrical appliance in embodiment 1.
Fig. 2 is the time capacity curve figure that in embodiment 1, magnadure air cell discharges.
Fig. 3 is capacity voltage curve during magnadure air cell band electrical appliance in embodiment 1
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not limited to this.
1, take 3 grams of neopelexes in beaker, then add 120 grams of 1-METHYLPYRROLIDONEs, stir and make it to dissolve completely, standby;
2, take 3 grams of sodium carboxymethylcelluloses in beaker, then add 75 grams of water, stir and to make it to be transparent thick, standby;
3, take 6 grams of butadiene-styrene rubber in beaker, then add 6 grams of water, stir the colloidal that makes it to be evenly distributed, standby;
4, to being equipped with in the beaker of 450 grams of water, add 9 grams of sodium sulphate and 21 grams of natrium citricums, make it to dissolve completely, be transparence;
5, in the solution in the 4th step, add neopelex solution, carboxymethylcellulose sodium solution, make it to be evenly distributed, add wherein again 36 grams of conductive carbon blacks, stir and to add again 36 grams of 12 grams, graphite and activated carbon after half an hour, after stirring half an hour, add again 174 grams of manganese dioxide, after stirring half an hour, add again butadiene-styrene rubber glue, then stir and can obtain pasty state Catalytic Layer semi-finished product half an hour;
6, pasty state Catalytic Layer in the 5th step is coated on nonwoven fabrics, in 75 ℃ of baking ovens, dries, obtain Catalytic Layer finished product;
7, magnadure, water accepting layer, above-mentioned Catalytic Layer, collector are gathered into folds successively and obtain so-called magnesium-air cell unit;
8, four battery units are together in series, positive and negative end connects upper LED lamp again, and adds 1ml water in battery, and LED lamp can be luminous.
The accessible effect of the present embodiment is, getting wet first can be luminous more than five days, and terminal voltage 2.5V is with worthwhile normal fluorescent lifetime, and repeatedly adding water can be luminous more than 20 days.Voltage in 12 hours, electric current and discharge capacity test result as shown in Figure 1 to Figure 3, are more than the test results when temperature is 12 ℃.
1, take 4 grams of tweens in beaker, then add 50 grams of water, stir and make it to dissolve completely, standby;
2, take 2 grams of xanthans in beaker, then add 75 grams of water, stir and to make it to be transparent thick, standby;
3, take 8 grams of polytetrafluoroethylene in beaker, then add 20 grams of water, stir the colloidal that makes it to be evenly distributed, standby;
4, to being equipped with in the beaker of 450 grams of water, add 9 grams of sodium chloride and 20 grams of natrium citricums and 2 grams of ethylenediamine tetra-acetic acids, make it to dissolve completely, be transparence;
5, in the solution in the 4th step, add tween solution, xanthan gum solution, make it to be evenly distributed, add wherein again 30 grams of conductive carbon blacks, stir and to add again 32 grams of 14 grams, graphite and activated carbon after half an hour, after stirring half an hour, add again 120 grams of manganese dioxide, after stirring half an hour, add again polytetrafluoroethylene glue, then stir and can obtain pasty state Catalytic Layer semi-finished product half an hour;
6, pasty state Catalytic Layer in the 5th step is coated on nonwoven fabrics, in 75 ℃ of baking ovens, dries, obtain Catalytic Layer finished product;
7, magnadure, water accepting layer, above-mentioned Catalytic Layer, collector are gathered into folds successively and obtain so-called magnesium-air cell unit;
8, four battery units are together in series, positive and negative end connects upper LED lamp again, and adds 1.5ml water in battery, and LED lamp can be luminous.
By test, the experimental result of the present embodiment is, the capacity of emitting for 12 hours is 72.2mAh, and the electric current at electrical appliance two ends is 5.03mA.
1, take 2 grams of stearic acid in beaker, then add 50 grams of water, stir and make it to dissolve completely, standby;
2, take the fine plain sodium of 10 grams of carboxymethyls dimension in beaker, then add 75 grams of water, stir and make it to be transparent thick, standby;
3, take 6 grams of polyacrylic acid in beaker, then add 14 grams of water, stir the colloidal that makes it to be evenly distributed, standby;
4, to being equipped with in the beaker of 450 grams of water, add 1 gram of sodium sulphate and 12 grams of natrium citricums and 10 grams of citric acids, make it to dissolve completely, be transparence;
5, in the solution in the 4th step, add stearic acid solution, the fine plain sodium solution of carboxymethyl dimension, make it to be evenly distributed, add wherein again 10 grams, carbon fiber, stir and to add again 40 grams of 14 grams, graphite and activated carbon after half an hour, stir and to add again 1 gram of 200 grams of manganese dioxide and metal platinum powder after half an hour, after stirring half an hour, add again polyacrylic acid glue, then stir and can obtain pasty state Catalytic Layer semi-finished product half an hour;
6, pasty state Catalytic Layer in the 5th step is coated on nonwoven fabrics, in 75 ℃ of baking ovens, dries, obtain Catalytic Layer finished product;
7, magnadure, water accepting layer, above-mentioned Catalytic Layer, collector are gathered into folds successively and obtain so-called magnesium-air cell unit;
8, four battery units are together in series, positive and negative end connects upper LED lamp again, and adds 2ml water in battery, and LED lamp can be luminous.
By test, the experimental result of the present embodiment is, the capacity of emitting for 12 hours is 83.7mAh, and the electric current at electrical appliance two ends is 5.46mA.
Claims (10)
1. a preparation method for magnadure air cell Catalytic Layer, is characterized in that, comprises the steps:
(1) surfactant, stabilizer and bonding agent are mixed with to solution;
(2) slaine is mixed with to mixed solution together with chelating agent or complexing agent, if when solution is obvious acidity or alkalescence, can add appropriate weak base or weak acid, pH value is adjusted to and approaches neutrality;
(3) by the adhesive solution dilution of step (1) preparation, and the surfactant solution and stabiliser solution and the slaine of step (2) preparation and the mixed solution of chelating agent or complexing agent that add step (1) to prepare, and stir;
(4) in the mixed liquor of step (3), add carbon material and catalyst, after stirring, add the bonding agent of step (1) preparation, then stir into a paste;
(5) step (4) pastel is coated on nonwoven fabrics, dries and obtain Catalytic Layer.
2. the preparation method of magnadure air cell Catalytic Layer according to claim 1, it is characterized in that: in described slaine, the electromotive force of the simple substance of contained metallic element is lower than magnesium metal, and the quality of described slaine is the 0.1%-4% of final dry gained Catalytic Layer quality.
3. the preparation method of magnadure air cell Catalytic Layer according to claim 1 and 2, is characterized in that: described slaine is NaCl or Na
2sO
4.
4. the preparation method of magnadure air cell Catalytic Layer according to claim 1, it is characterized in that: described catalyst is platinum, platinum alloy, silver, manganese dioxide or metal organic chelate, the quality of described catalyst is the 40%-90% of final dry gained Catalytic Layer quality.
5. the preparation method of magnadure air cell Catalytic Layer according to claim 1, is characterized in that: described carbon material is graphite, active carbon, conductive carbon or carbon fiber, and the quality of described carbon material is the 5%-40% of final dry gained Catalytic Layer quality.
6. the preparation method of magnadure air cell Catalytic Layer according to claim 1, it is characterized in that: described surfactant is neopelex, stearic acid, AEO or tween, the quality of described surfactant is the 0.1%-4% of final dry gained Catalytic Layer quality.
7. the preparation method of magnadure air cell Catalytic Layer according to claim 1, is characterized in that: described stabilizer is CMC or xanthans, and the quality of described stabilizer is the 0.1%-6% of final dry gained Catalytic Layer quality.
8. the preparation method of magnadure air cell Catalytic Layer according to claim 1, it is characterized in that: described bonding agent is butadiene-styrene rubber, polytetrafluoroethylene, Kynoar or polyacrylic acid, the quality of described bonding agent is the 0.1%-6% of final dry gained Catalytic Layer quality.
9. the preparation method of magnadure air cell Catalytic Layer according to claim 1, it is characterized in that: described chelating agent or complexing agent are ethylenediamine tetra-acetic acid, sal limonis or polyphosphate, the quality of described chelating agent or complexing agent is the 1%-10% of final dry gained Catalytic Layer quality.
10. a magnadure air cell for the Catalytic Layer of preparing containing claim 1, is characterized in that: also comprise magnadure, water accepting layer and afflux layer; Described magnesium alloy, water accepting layer, Catalytic Layer and afflux layer superpose successively and form a magnadure air cell unit, and a plurality of units in series or parallel connection form magnadure air cell group, and described afflux layer is copper or silver.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104451475A (en) * | 2014-12-15 | 2015-03-25 | 苏州宽温电子科技有限公司 | Aluminum alloy composite material and preparation method thereof |
| CN105742654A (en) * | 2016-03-24 | 2016-07-06 | 南开大学 | Preparation method for mixed-phase mullite electrocatalyst and catalyst layer used for negative electrode of fuel cell |
| CN108101043A (en) * | 2017-12-21 | 2018-06-01 | 陕西科技大学 | A kind of coal derives the Preparation method and use of artificial graphite material |
| CN109950665A (en) * | 2017-12-21 | 2019-06-28 | 中南大学 | A kind of lithia gas (air) battery extension interlayer and its melt spinning preparation process |
| CN109950667A (en) * | 2017-12-21 | 2019-06-28 | 中南大学 | A kind of lithia gas (air) battery extension interlayer and its wet spinning preparation process |
| CN110540369A (en) * | 2018-07-12 | 2019-12-06 | 蓝思科技（长沙）有限公司 | Deplating liquid for deplating FGAR film and preparation method and application thereof |
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| CN104451475A (en) * | 2014-12-15 | 2015-03-25 | 苏州宽温电子科技有限公司 | Aluminum alloy composite material and preparation method thereof |
| CN105742654A (en) * | 2016-03-24 | 2016-07-06 | 南开大学 | Preparation method for mixed-phase mullite electrocatalyst and catalyst layer used for negative electrode of fuel cell |
| CN105742654B (en) * | 2016-03-24 | 2021-04-23 | 南开大学 | Mixed-phase mullite electrocatalyst for cathode of air battery or fuel battery |
| CN108101043A (en) * | 2017-12-21 | 2018-06-01 | 陕西科技大学 | A kind of coal derives the Preparation method and use of artificial graphite material |
| CN109950665A (en) * | 2017-12-21 | 2019-06-28 | 中南大学 | A kind of lithia gas (air) battery extension interlayer and its melt spinning preparation process |
| CN109950667A (en) * | 2017-12-21 | 2019-06-28 | 中南大学 | A kind of lithia gas (air) battery extension interlayer and its wet spinning preparation process |
| CN108101043B (en) * | 2017-12-21 | 2021-05-18 | 陕西科技大学 | Preparation method and application of coal-derived artificial graphite material |
| CN109950665B (en) * | 2017-12-21 | 2021-11-23 | 中南大学 | Lithium-air battery extension interlayer melt spinning preparation process |
| CN109950667B (en) * | 2017-12-21 | 2022-02-01 | 中南大学 | Wet spinning preparation method for lithium-air battery expansion interlayer |
| CN110540369A (en) * | 2018-07-12 | 2019-12-06 | 蓝思科技（长沙）有限公司 | Deplating liquid for deplating FGAR film and preparation method and application thereof |
| CN111668487A (en) * | 2020-06-08 | 2020-09-15 | 广州市乐基智能科技有限公司 | Modified xanthan gum water-based binder and preparation method thereof |
| CN111668487B (en) * | 2020-06-08 | 2021-05-04 | 广州市乐基智能科技有限公司 | Modified xanthan gum water-based binder and preparation method thereof |
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Denomination of invention: A preparation method of mg Al alloy air battery and its catalytic layer Effective date of registration: 20200826 Granted publication date: 20151209 Pledgee: Xiangtan branch of Bank of Changsha Co.,Ltd. Pledgor: SOUNDON NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2020430000010 |
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