CN2599763Y - Battery device using folding electrode - Google Patents
Battery device using folding electrode Download PDFInfo
- Publication number
- CN2599763Y CN2599763Y CNU022930639U CN02293063U CN2599763Y CN 2599763 Y CN2599763 Y CN 2599763Y CN U022930639 U CNU022930639 U CN U022930639U CN 02293063 U CN02293063 U CN 02293063U CN 2599763 Y CN2599763 Y CN 2599763Y
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- China
- Prior art keywords
- electrode
- collapsible
- gas
- electrolyte
- battery
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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.)
- Expired - Fee Related
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a battery device with foldable electrodes, including a gas electrode and a positive leading-out wire, a reservoir, electrolyte, a negative reactive substance and a negative leading-out wire. The utility model is characterized in tat the gas electrode is made by bending the sheet of electrode material into corrugated shape or made of a plurality of strip-cut sheets of electrode material arranged at certain intervals; part of the electrode is immersed in the electrolyte or the foldable electrode is fixed on the solid electrolyte membrane; the electrode and the electrolyte form a three-phase interface or an interface between the electrode and the solid electrolyte membrane is the electrode working face; the foldable electrode has the advantages of accurate measurement and assessment, high transmission speed of gas and liquid, long-term work under high current; and the electrode production is quite simple for mass production.
Description
Technical field:
The utility model belongs to technical field of electrochemistry, particularly relates to the battery or the fuel cell of gas electrode.
Background technology:
The electrochemical reaction of battery or fuel cell gas electrode requires to carry out under the condition of gas-liquid-solid three-phase coexistence.The gas electrode that generally uses at present is gas-diffusion electrode, is made of porous materials usually.According to " fuel cell " (publishing house of Ministry of Metallurgical Industry,, Beijing in 2002, p42-45) introduce, porous electrode divides at least does two-layer, highly hydrophobic porous gas diffusion layer and the wetting thin layer of electrolyte, catalysis material also is housed between the two, and electrochemical reaction takes place; One side of electrode is to electrolyte, and the another side is to gas.Because the effect of capillary force forms three phase boundary in porous electrode.Though it is comparatively universal that kind electrode uses, but still have three problems, one, because of its complex process, the electrode manufacturing is difficult to industrialization; Its two, it is bigger that the gas-liquid in the porous electrode transports resistance, so can not work under big electric current; Its three, after the long-term work, some impurity stop up holes, make the gas-liquid in the porous electrode transport difficulty more.
Technology contents:
The utility model proposes a kind of cell apparatus that adopts collapsible electrode, electrode is made simple and can long-term work under big current condition.
The cell apparatus of the collapsible electrode of this employing comprises gas electrode 1 and positive outside wire 6, reservoir 2, electrolyte 3, negative reaction material 4 and negative outside wire 5; It is characterized in that: described gas electrode 1 is the collapsible electrode 1 that the electrode material thin slice is bent into the corrugated plating shape or is fixedly formed by certain interval by a plurality of electrode material thin slices that are cut into strip; The part of collapsible electrode 1 pole plate is immersed in the electrolyte 3, or collapsible electrode 1 is fixed on the solid electrolyte diaphragm 8.
The three phase boundary 7 that described collapsible electrode 1 and electrolyte 3 form or be electrode face with interface 9 that solid electrolyte diaphragm 8 forms.
Compare with the battery of the existing gas-diffusion electrode that is made of porous materials, the utility model adopts the cell apparatus of collapsible gas electrode that three big advantages are arranged: the first, the three phase boundary of Xing Chenging is not in porous electrode, simple and clear, be convenient to accurate measurement for Evaluation, be convenient to produce in batches; The second, because the gas-liquid transmission on the three phase boundary 7 that collapsible electrode 1 and electrolyte 3 form is not carried out in porous media, its gas-liquid transmission speed is much larger than the gas-liquid transmission speed of carrying out in the porous media of porous electrode; Experiment shows that under the big current work state, its performance obviously is better than porous electrode; The 3rd, after the product that forms in the electrochemical reaction process or other impurity stop up the electrode hole, do not influence the gas-liquid transmission.
Description of drawings:
Fig. 1 is for adopting the battery structure schematic diagram of the collapsible electrode of corrugated plating shape;
Fig. 2 is for adopting the battery structure schematic diagram of the collapsible electrode of shutter shape;
Fig. 3 is the battery structure schematic diagram that is fixed on the collapsible electrode on the solid electrolyte diaphragm.
Embodiment:
Below in conjunction with description of drawings embodiment of the present utility model.
Embodiment 1:
Present embodiment is with zinc--and the air monocell illustrates the working method of collapsible electrode battery:
The electrode material that will can be used for the battery air utmost point or fuel cell gas electrode laminates, collapsible electrode 1 concrete 200 orders above activated carbon, the acetylene black of adopting in the present embodiment, be in harmonious proportion and roll on nickel screen through polytetrafluoroethylene, make 0.4 to 1 millimeter thin electrodes, be bent into the gas electrode 1 of corrugated plating shape as shown in fig. 1 again.
When constituting battery, anodal air pole adopts collapsible electrode 1, and being fixed is installed in the battery reservoir 2, makes it to be partially immersed in the electrolyte 3, part contacts with air, and with positive outside wire 6 with draw after collapsible electrode 1 links to each other; Negative reaction material 4 uses zinc powder or rolled tin, and negative outside wire 5 links to each other with negative reaction material 4 and draws.
Make when battery operated, the KOH solution that injects the 20--40% weight concentration in battery reservoir 2 is to a part of flooding collapsible electrode 1, and then the positive and negative of each fold plane respectively has an electrolyte waterline to become the three phase boundary 7 of the chemical reaction of can powering.Collapsible electrode 1 is connected with load with positive outside wire 6, negative outside wire 5, and battery can discharge.Gas and the liquid transmission speed under the kind electrode structure is than faster in porous media.This collapsible electrode 1 metering reaction compartment promptly can fold plane with electrolyte 3 handing-over waterlines be that the total length of three phase boundary 7 measures.Like this, in the engineering manufacturing, be convenient to design more accurate and visually.
If with making the thin plate that collapsible electrode 1 used electrode material is made in the present embodiment, be tiled on the electrolyte, high-power constant-current discharge is at 100mA/cm
2The time, voltage obviously descends after battery operated one hour; And when this thin electrodes being made collapsible electrode 1 of the present utility model and being arranged to as shown in Figure 1 battery structure of present embodiment, under the constant situation of other conditions, but the output voltage continous-stable of present embodiment battery this shows the advantage of the collapsible electrode in the utility model till the metallic zinc full consumption.
Embodiment 2:
The thin plate that the electrode material of making collapsible electrode 1 usefulness described in the embodiment 1 is made is cut into some strip electrode sheets, having used 40 lengths of a film * thick * wide in the present embodiment is the strip electrode sheet of 150 * 1 * 15 (mm), successively the folded formula of strip electrode is fixed by the 1-3mm gap, make shutter shape as shown in Figure 2 collapsible electrode 1 and and electrode outlet line 6 couple together.
Collapsible electrode 1 is immersed electrolyte 3, and waterline floods the part to strip electrode, can the power three phase boundary 7 of chemical reaction of formation.Other are identical with embodiment 1, are arranged to battery structure as shown in Figure 2.Adopt the collapsible electrode 1 of this shutter shape to be convenient to make large-scale electrode, be convenient to battery and install, and battery operation is stable, long service life.
Embodiment 3:
Present embodiment is that example illustrates that the collapsible electrode of employing is fixed on the working method of the cell apparatus on the solid electrolyte diaphragm with the Proton Exchange Membrane Fuel Cells.
As shown in Figure 3, in the present embodiment material of hydrogen electrode 10 and oxygen electrode 11 be with the platinum C catalyst with roll after polytetrafluoroethylene mixes at nickel screen or the online thin slice of silver; Hydrogen electrode 10 and oxygen electrode 11 all are bent into the collapsible electrode style of corrugated plating shape, and fixed in position is on the solid electrolyte diaphragm 8 in proton exchange membrane.In the present embodiment, the interface 9 between hydrogen electrode 10 and oxygen electrode 11 and the proton exchange membrane 8 is working interfaces of electrode.If hydrogen electrode 10 is linked to each other with load by lead respectively with oxygen electrode 11, battery can discharge.
The present embodiment explanation: collapsible electrode 1 of the present utility model both can be used to adopt the anode of gas as reactant, also can be used as battery cathode.
Embodiment 4:
Present embodiment is that example illustrates that the utility model adopts the working method of collapsible electrode battery device with the alkaline hydrogen oxygen fuel cell.
Present embodiment adopts the also available Fig. 3 of collapsible electrode battery device to represent, just the solid electrolyte diaphragm of placing between hydrogen electrode 10 and oxygen electrode 11 8 is the asbestos diaphragms 8 that soak full KOH solution, and described hydrogen electrode 10 adopts gold-plated nickel screen; Described oxygen electrode 11 is to roll the thin slice that forms by nickel screen with the platinum plating carbon granules with the Catalytic Layer of making after polytetrafluoroethylene mixes; Hydrogen electrode 10 and oxygen electrode 11 are all made the style of the collapsible electrode 1 of corrugated plating shape as shown in fig. 1, and the interface 9 between hydrogen electrode 10 and oxygen electrode 11 and the barrier film 8 is three phase boundaries of electrode work.If hydrogen electrode 10 is linked to each other with load by lead respectively with oxygen electrode 11, battery can discharge.
Claims (3)
1, a kind of cell apparatus that adopts collapsible electrode comprises gas electrode and positive outside wire, reservoir, electrolyte, negative reaction material and negative outside wire; It is characterized in that: described gas electrode is the electrode material thin slice to be bent into the corrugated plating shape form; The part of its pole plate is immersed in the electrolyte.
2, adopt the cell apparatus of collapsible electrode according to claim 1, be characterised in that: described gas electrode is fixedly to be formed by certain interval by a plurality of electrode material thin slices that are cut into strip.
3, adopt the cell apparatus of collapsible electrode according to claim 1, be characterised in that: described collapsible electrode is fixed on the solid electrolyte diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022930639U CN2599763Y (en) | 2002-12-25 | 2002-12-25 | Battery device using folding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022930639U CN2599763Y (en) | 2002-12-25 | 2002-12-25 | Battery device using folding electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599763Y true CN2599763Y (en) | 2004-01-14 |
Family
ID=34151754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU022930639U Expired - Fee Related CN2599763Y (en) | 2002-12-25 | 2002-12-25 | Battery device using folding electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599763Y (en) |
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2002
- 2002-12-25 CN CNU022930639U patent/CN2599763Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |