CN103500865B - A kind of Lithium-cathode semi-fuel cell component - Google Patents
A kind of Lithium-cathode semi-fuel cell component Download PDFInfo
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- CN103500865B CN103500865B CN201310489161.7A CN201310489161A CN103500865B CN 103500865 B CN103500865 B CN 103500865B CN 201310489161 A CN201310489161 A CN 201310489161A CN 103500865 B CN103500865 B CN 103500865B
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- lithium
- fuel 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
- 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
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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
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
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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
Abstract
A kind of Lithium-cathode semi-fuel cell component, comprises negative pole housing, is sticked into by copper liner in negative electrode casing body, and the bellmouth of copper liner aims at the screw on anode coat, and formed and add lithium passage, brass screw is screwed in the screw of anode coat; Together with being inhaled with copper facing round iron sheet by first circle magnet, and magnet inwardly, puts in copper liner, in the draw-in groove of other one piece of second round magnet cartridge bottom anode coat; Anode is contained in positive pole enclosure cavity, and as required, positive wire, positive terminal are loaded onto in the hole on positive pole shell, forms circulate electrolyte and imports and exports or gas inlet and outlet; Upper rubber sheet gasket, solid lithium ion conductors is padded successively in the middle of negative pole housing and positive pole shell; and being coated with epoxide-resin glue, positive pole shell and anode coat are threaded, and can be used for assembling cathode of lithium semi-fuel cell; realize the available protecting of cathode of lithium and mechanical charge fast, and simple to operate.
Description
Technical field
The present invention relates to new forms of energy cathode of lithium semi-fuel cell technical field, be specifically related to a kind of Lithium-cathode semi-fuel cell component.
Background technology
Countries in the world are impelled all to go into overdrive to research and develop electric automobile to the worry of lack of energy and environmental pollution, and the key of good electric automobile is high-performance power battery, comprising: Large Copacity, macro-energy density, the charging interval is short, long service life, cost are reasonable and safe and reliable.Little compared to capacity density, capacity is little or containing the conventional batteries of the easy contaminated environment of heavy metal, the lithium-empty battery of energy density super large and the fuel cell of very high capacity are considered to the most promising power in environmental protection battery.Better, achieve practical application, but its structure is more complicated, energy density is still less than normal in fuel cell development.Lithium-empty battery is novel battery, is in the laboratory research stage, and also have a lot of problem to need to solve, such as: (1) affects by positive pole blocking effect, actual energy density is far below theoretical value; (2) cycle performance is poor, electrochemical dissolution in cyclic process, has Li dendrite to be formed, and battery capacity decay is serious; (3) the same with conventional batteries, the charging interval is long.
Cathode of lithium semi-fuel cell is negative pole with lithium metal, serves as fuel, and positive pole oxidant is dissolved in anode electrolyte.During operation, anode electrolyte is circulated through electrode, and in time supplemental oxidant enters electrolyte, and mechanical charge again after negative metal lithium runs out of, namely adds new lithium metal.Cathode of lithium semi-fuel cell negative pole has the feature of lithium battery, is just having the feature of fuel cell, is the combination of the two, the also advantage of both:
(1) high voltage and high-energy-density.As fuel, lithium metal has the energy density suitable with gasoline, and its electrode potential is minimum in all metals, therefore uses lithium metal as negative pole, and the cathode of lithium semi-fuel cell of composition is the same with lithium battery, has high voltage and high-energy-density.
(2) can Quick mechanical charging.After battery discharge is complete, by mechanical charge fast, namely directly in battery, add new lithium metal, battery just can discharge again.Mechanical charge pattern substantially reduces the charging interval, makes it almost to add oil phase analogy with gasoline engine, and avoids electrochemical dissolution and lithium dendrite growth problem that high-voltage charge brings.
(3) capacity is large.Similar with fuel cell, the capacity of cathode of lithium semi-fuel cell depends on the amount of the fuel of storage, and fuel can be stored in the fuel storage tank outside battery, and therefore, the capacity of battery can do very large.
(4) cell output can regulate easily.Similar with fuel cell, regulating cell power can be carried out by regulating positive active material flow velocity and concentration.
Because have above advantage, cathode of lithium semi-fuel cell is the more satisfactory selection of following batteries of electric automobile.Assemble cathode of lithium semi-fuel cell, lithium metal will be protected closely, in order to avoid it contacts with water, air etc. and is corroded, simultaneously again can mechanical charge easily, therefore need specially designed battery component.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of Lithium-cathode semi-fuel cell component, lithium anode can be protected well, simultaneously can mechanical charge easily.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of Lithium-cathode semi-fuel cell component, comprises negative pole housing 2, is sticked into by copper liner 6 in negative pole housing 2, and the bellmouth of copper liner 6 aims at the screw on anode coat 2, and formed and add lithium passage, brass screw 9 is screwed in the screw of anode coat 2; Together with being inhaled with copper facing round iron sheet 10 by first circle magnet 7, and magnet inwardly, and put in copper liner 6, other one piece of second round magnet 8 is contained in the draw-in groove bottom anode coat 2;
Anode 4 is contained in positive pole shell 1 cavity, and positive wire 13, one or two the first positive terminal 3, second positive terminal 14 are loaded onto in the hole on positive pole shell 1, imports and exports or gas inlet and outlet to form circulate electrolyte;
Pad upper first rubber sheet gasket 11, solid lithium ion conductors 5, second rubber sheet gasket 12 successively in the middle of negative pole housing 2 and positive pole shell 1, and be coated with epoxide-resin glue, positive pole shell 1 and anode coat 2 are threaded.
Described anode coat 2 adopts Teflon material, with copper liner 6 lightpressure fit; When brass screw 9 is tightened, along the bellmouth hole wall propping up copper liner 6 under screw.
Described copper liner 6 and copper facing round iron sheet 10 are slidably matched.
Described positive pole shell 1 adopts Teflon material.
The first described positive terminal 3, second positive terminal 14 adopts Teflon material.
The present invention devises a kind of new battery component, can be used for assembling cathode of lithium semi-fuel cell, realizes the available protecting of cathode of lithium and mechanical charge fast, and simple to operate.Utilize this battery component, successfully assemble lithium-hydrogen peroxide semi-fuel cell in laboratory, " mechanical charge-electric discharge " cycle characteristics of battery is studied.The result verification reliability of battery component.
Accompanying drawing explanation
Fig. 1 is explosive view of the present invention (oxidant used is liquid situation).
Fig. 2 is the structural representation of anode coat of the present invention, the profile that Fig. 2 (a) is anode coat, the end view that Fig. 2 (b) is anode coat.
Fig. 3 is the structural representation of copper liner of the present invention, and Fig. 3 (a) is the profile of copper liner, and Fig. 3 (b) is the end view of copper liner.
Fig. 4 is copper facing iron wafer architecture schematic diagram of the present invention, and Fig. 4 (a) is the front view of copper facing iron disk, and Fig. 4 (b) is the end view of copper facing iron disk.
Fig. 5 is positive pole shell mechanism schematic diagram of the present invention.
Fig. 6 is positive terminal structural representation of the present invention.
Fig. 7 is that lithium-hydrogen peroxide semi-fuel cell runs and testing apparatus schematic diagram.
Fig. 8 is lithium-hydrogen peroxide semi-fuel cell mechanical charge-discharge cycles curve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of Lithium-cathode semi-fuel cell component, comprises negative pole housing 2, copper liner 6 is sticked in negative pole housing 2, the bellmouth of copper liner 6 aims at the screw on anode coat 2, and formed and add lithium passage, brass screw 9 is screwed in the screw of anode coat 2; Together with being inhaled with copper facing round iron sheet 10 by first circle magnet 7, and magnet inwardly, and put in copper liner 6, other one piece of second round magnet 8 is contained in the draw-in groove bottom anode coat 2;
Anode 4 is contained in positive pole shell 1 cavity, and as required, positive wire 13, one or two the first positive terminal 3, second positive terminal 14 are loaded onto in the hole on positive pole shell 1, imports and exports or gas inlet and outlet to form circulate electrolyte;
Pad upper first rubber sheet gasket 11, solid lithium ion conductors 5, second rubber sheet gasket 12 successively in the middle of negative pole housing 2 and positive pole shell 1, and be coated with epoxide-resin glue, positive pole shell 1 and anode coat 2 are threaded, and through operating above, battery component has just assembled.
Described anode coat 2 adopts Teflon material, with copper liner 6 lightpressure fit; When brass screw 9 is tightened, along the bellmouth hole wall propping up copper liner 6 under screw, keep good electrical contact.
Described copper liner 6 and copper facing round iron sheet 10 are slidably matched.
Described positive pole shell 1 adopts Teflon material.
The first described positive terminal 3, second positive terminal 14 adopts Teflon material.
Operation principle of the present invention is:
The battery component assembled is taken in argon shield glove box, the first circle magnet 7 and the second circle magnet 8 attracting, copper facing round iron sheet 10 is restricted to bottom anode coat 2, adds lithium passage unobstructed.A certain amount of lithium particle is added in negative pole cavity from adding lithium passage, and drip appropriate organic electrolyte, second circle magnet 8 in upset anode coat 2 draw-in groove, first circle magnet 7 and the second circle magnet 8 repel each other, copper facing round iron sheet 10 is advanced, lithium particle is just compacted, and keeps good electrical contact with copper facing round iron sheet 10.Finally tighten brass screw 9, and apply a small amount of fluid sealant.Namely battery completes machinery and adds lithium, can take out, discharge in atmosphere from glove box.Positive electrode, anode electrolyte and oxidant can be selected as required.With reference to Fig. 5, if with liquid oxidizer (as hydrogen peroxide solution, ferric ion solutions etc.), Ф 1 hole of positive pole shell 1 can be sealed, positive electrode is placed in positive pole shell 1 cavity, positive wire 13 is connected with positive electrode and draws from Ф 3 hole, two screws that positive pole shell 1 is left can be used as the import and export of liquid electrolyte, the use that electrolysis liquid recycle stream is dynamic; If with gaseous oxidizer (as oxygen etc.), then gaseous state electrode and positive wire 13 can be placed in bottom the large screw of positive pole shell 1, lead-in wire is drawn from Ф 1 hole, tighten large size positive terminal gaseous state electrode and positive wire are fixed, with reference to Fig. 6, gaseous oxidizer can enter gaseous state electrode from Ф 2 hole of large size positive terminal, the use that remaining two screw electrolysis liquid recycle streams are dynamic.As will positive electrode be changed, as long as turn on large size positive terminal, change from the rear portion of positive pole shell, and without the need to taking battery apart.After battery discharge is complete, battery is moved into glove box, back out brass screw 9, upset circle magnet sucks back copper facing round iron sheet 10, add lithium particle, upset circle magnet advances copper facing round iron sheet 10 to compress lithium particle, tightens brass screw 9, coating fluid sealant, battery just completes mechanical charge, can again discharge.
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment
Lithium-hydrogen peroxide semi-fuel cell is assembled with above-mentioned battery component.Wherein, select and be dissolved with 1mol/L LiPF
6eC, DEC(volume ratio be 1:1) mixed solution organic electrolyte; (principal crystalline phase is Li to the LISICON sheet bought from Japanese Ohara company
1+x+yal
x(Ti, Ge)
2-xsi
yp
3-yo
12, diameter 15mm, thickness 150 μm, lithium ion conductivity 1 × 10 under room temperature
-4scm
-1) as solid lithium ion conductors; With nickel foam (1cm × 1cm × 0.5mm, 110PPI, 300g/m
2) do positive electrode; 2mol/L LiCl solution is anode electrolyte; Oxidant hydrogen peroxide is added in LiCl electrolyte.Battery operation and testing apparatus are as shown in Figure 7.
With the electric battery test system of indigo plant (CT2001A5V/10mA), the test of " mechanical charge-electric discharge " cycle performance is carried out to battery, in discharge process, under peristaltic pump effect, anode electrolyte flows through foam nickel anode with the rate loop of 10mL/min, 30% hydrogen peroxide solution is dripped aperiodically in LiCl electrolyte, to maintain hydrogen peroxide concentration, discharging current is 0.1mA, and the discharge curve obtained as shown in Figure 8.
Within the testing time of 700 hours, carried out 4 mechanical charges altogether, obtained 4 discharge curves, discharge voltage is substantially steady, and discharge platform is obvious, and open circuit voltage is 3.0V, and average discharge volt is 2.7V.Result shows that the lithium-hydrogen peroxide semi-fuel cell assembled has good stability.About 10 minutes consuming time of mechanical charge after being discharged, very convenient.
Obtain the electricity can released in theory according to the Mass Calculation of the lithium metal adding battery, the comparision of quantity of electricity of releasing with reality, draw lithium metal utilance, result is as shown in table 1.
Table 1 lithium-hydrogen peroxide semi-fuel cell lithium metal utilance
Average metal lithium utilance reaches 80.9%, illustrates that battery module structure can stop air, aqueous vapor etc. to infilter negative pole chamber substantially, protects lithium metal well, and during electric discharge, the side reaction such as corrosion of lithium is little.Lithium metal utilance does not also increase with " mechanical charge-electric discharge " cycle-index and reduces, and namely at least in front four circulations, does not have capacity attenuation.
Claims (5)
1. a Lithium-cathode semi-fuel cell component, comprise negative pole housing (2), it is characterized in that: copper liner (6) is sticked in negative pole housing (2), the bellmouth of copper liner (6) aims at the screw on anode coat (2), formation adds lithium passage, and brass screw (9) is screwed in the screw of anode coat (2); First circle magnet (7) and copper facing round iron sheet (10) are inhaled together, put in copper liner (6), other one piece of second round magnet (8) is contained in the draw-in groove of anode coat (2) bottom;
Anode (4) is contained in positive pole shell (1) cavity, positive wire (13), the first positive terminal (3), the second positive terminal (14) are loaded onto in hole on positive pole shell (1), import and export or gas inlet and outlet to form circulate electrolyte, described first positive terminal (3) is one or two;
Upper first rubber sheet gasket (11), solid lithium ion conductors (5), the second rubber sheet gasket (12) is padded successively in the middle of negative pole housing (2) and positive pole shell (1), and being coated with epoxide-resin glue, positive pole shell (1) and anode coat (2) are threaded;
First circle magnet (7) and the second circle magnet (8) repel each other, and advanced by copper facing round iron sheet (10), lithium particle is just compacted, and keeps good electrical contact with copper facing round iron sheet (10).
2. a kind of Lithium-cathode semi-fuel cell component according to claim 1, is characterized in that: described anode coat (2) adopts Teflon material, with copper liner (6) lightpressure fit; When brass screw (9) is tightened, along the bellmouth hole wall propping up copper liner (6) under screw.
3. a kind of Lithium-cathode semi-fuel cell component according to claim 1, is characterized in that: described copper liner (6) and copper facing round iron sheet (10) are slidably matched.
4. a kind of Lithium-cathode semi-fuel cell component according to claim 1, is characterized in that: described positive pole shell (1) adopts Teflon material.
5. a kind of Lithium-cathode semi-fuel cell component according to claim 1, is characterized in that: described the first positive terminal (3), the second positive terminal (14) adopt Teflon material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310489161.7A CN103500865B (en) | 2013-10-18 | 2013-10-18 | A kind of Lithium-cathode semi-fuel cell component |
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| CN201310489161.7A CN103500865B (en) | 2013-10-18 | 2013-10-18 | A kind of Lithium-cathode semi-fuel cell component |
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| CN103500865A CN103500865A (en) | 2014-01-08 |
| CN103500865B true CN103500865B (en) | 2015-08-19 |
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| CN108768288B (en) * | 2018-06-15 | 2024-04-26 | 浙江晶科能源有限公司 | Line box applied to photovoltaic module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242017A (en) * | 2007-12-28 | 2008-08-13 | 中国航天科技集团公司第六研究院第十一研究所 | Half fuel cell |
| CN201134482Y (en) * | 2007-12-25 | 2008-10-15 | 中国航天科技集团公司第六研究院第十一研究所 | Semi-fuel cell of aluminum/peroxide |
| CN102938481A (en) * | 2012-11-09 | 2013-02-20 | 中国电子科技集团公司第十八研究所 | High-energy low-consumption Al-H2O2 semi-fuel cell |
| CN103000970A (en) * | 2012-11-09 | 2013-03-27 | 中国电子科技集团公司第十八研究所 | Ion exchange membrane for Al-H2O2 semi-fuel cell and cell using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6849356B2 (en) * | 2002-01-03 | 2005-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Separated flow liquid catholyte aluminum hydrogen peroxide seawater semi fuel cell |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134482Y (en) * | 2007-12-25 | 2008-10-15 | 中国航天科技集团公司第六研究院第十一研究所 | Semi-fuel cell of aluminum/peroxide |
| CN101242017A (en) * | 2007-12-28 | 2008-08-13 | 中国航天科技集团公司第六研究院第十一研究所 | Half fuel cell |
| CN102938481A (en) * | 2012-11-09 | 2013-02-20 | 中国电子科技集团公司第十八研究所 | High-energy low-consumption Al-H2O2 semi-fuel cell |
| CN103000970A (en) * | 2012-11-09 | 2013-03-27 | 中国电子科技集团公司第十八研究所 | Ion exchange membrane for Al-H2O2 semi-fuel cell and cell using same |
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