AU2009100666A4 - A lithium-ion button battery - Google Patents
A lithium-ion button battery Download PDFInfo
- Publication number
- AU2009100666A4 AU2009100666A4 AU2009100666A AU2009100666A AU2009100666A4 AU 2009100666 A4 AU2009100666 A4 AU 2009100666A4 AU 2009100666 A AU2009100666 A AU 2009100666A AU 2009100666 A AU2009100666 A AU 2009100666A AU 2009100666 A4 AU2009100666 A4 AU 2009100666A4
- Authority
- AU
- Australia
- Prior art keywords
- lithium
- button battery
- helmet
- ion button
- collet
- Prior art date
- 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.)
- Ceased
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 16
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 229910052744 lithium Inorganic materials 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- 239000001989 lithium alloy Substances 0.000 claims description 5
- 229910000733 Li alloy Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 235000019589 hardness Nutrition 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 229910017539 Cu-Li Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002009 allergenic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical class [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Description
1 Description Title A LITHIUM-ION BUTTON BATTERY FIELD OF THE INVENTION The present invention generally relates to a lithium-ion button battery, especially to a battery with an alkaline electrolyte and a lithium negative electrode, in a housing in the form of a button battery. BACKGROUND OF THE INVENTION Batteries in the form of button batterys with an alkaline electrolyte generally incorporate a gel compounded from powdered lithium as their negative electrode. So called "lithium-air batterys" incorporate a gaseous-diffusion electrode as the positive electrode, or, in the case of hermetically sealed button batterys, for example, manganese oxide or silver oxide, as the active compounds. The inner surfaces of the steel or stainless steel housings of such button batterys that house the lithium electrode are commonly coated with copper, while the outer surfaces of the housings have a nickel coating.The copper of the copper coating on the inner surfaces of the housings may be alloyed with, for example, indium, or the copper coating may be overcoated with a layer of indium to increase the hydrogen overvoltage and suppress liberation of hydrogen, in spite of the low mercury content of the lithium electrode. A special problem that occurs in the case of button batterys of this type is that, over time, the alkaline electrolyte, which has a strong tendency to creep, seeps into the gap between the helmet half of the housing accommodating the negative electrode and seal. If that occurs, the electrolyte also contacts the cut edge of the housing and the latter's outer surface, which is coated with nickel, and cause undesirable liberation of hydrogen. Although efforts have been devoted to preventing the alkaline electrolyte from penetrating into that area by applying adhesive compounds to the vicinities of the seals, those efforts have not led to any reproducible, reliable, results. It would therefore be advantageous to provide a lithium-ion button battery that will further suppress the tendency toward liberating gases in the case of button batterys employing alkaline electrolytes. SUMMERY OF THE INVENTION The objects of this invention are to provide a lithium-ion button battery to avoid 2 the above problem. In order to solve the above problem, the present invention disclose a lithium-ion button battery comprising a collet, a helmet sealed to the collet, said collet and helmet housing an alkaline electrolyte and a lithium negative electrode, and a Cu-Li alloy containing substantially no nickel coated on at least an outer surface of the helmet. The alloy contains about 20% to about 90% Cu, preferably about 50% to about 60% Cu, with the remainder being Li. The outer and an inner surface of the helmet and the collet are coated with the alloy. The thickness of the coating is about 0.05 pm to about 10 pm. The lithium-ion button battery disclosed in the present invention, a Cu-Li-alloy containing substantially no nickel coated on at least an outer surface of the helmet. Preferably the alloy contains 20-90% copper, 50-60% copper and the remainder Li, or 75-85% copper and the remainder Li.These alloys have sufficiently high hardnesses, similar to that of nickel coatings, resistance to corrosion, and low contact resistance, and have fine-grained, homogeneous, crystalline structures which have been found to be beneficial. DESCRIPTION OF THE DRAWINGS In order that the present invention can be more readily understood, reference will now be made to the accompanying drawing to illustrate the embodiments of the present invention and wherein: FIG. 1 is a cross-section of a lithium-ion button battery in accordance with aspects of the invention; and FIG. 2 is an exploded view of a portion of the lithium-ion button battery of FIG. 1. DESCRIPTION OF PREFERRED EMBODIMENT In order that the present invention can be more readily understood, reference will now be made to the accompanying drawing to illustrate the embodiments of the present invention, and the like numerals refers to the like component. According to the an aspect of the present invention, reference to the Figs., at least the outer surface of the helmet of the battery containing negative lithium-gel electrode is coated with a Cu-Li-alloy containing substantially no nickel. It is beneficial if the same coating is also applied to the inner surface of the helmet and the inner surface of the other half of the battery housing, its collet, and the outer surface thereof is also coated with that same material, if necessary.
3 The coating preferably includes a Cu-Li-alloy containing about 20% to about 90% Cu and Li, as well as Li. Suitable choices for the coating include, but are not limited to, alloys containing about 20% to about 60% Cu and about 40% to about 50% Li, or alloys of about 75% to about 85% Cu and about 15% to about 25% Li. Alloys of about 50% to about 60% Cu and about 25% to about 35% Li, with the remainder being Li, for example, about 15% Li, or alloys of about 75% to about 85% Cu and about 8% to about 12% Li, with the remainder being Li, for example, about 5% Li, also are preferred. These alloys have sufficiently high hardnesses, similar to that of nickel coatings, resistance to corrosion, and low contact resistance, and have fine-grained, homogeneous, crystalline structures which have been found to be beneficial. However, they contain no nickel or substantially no nickel. "Substantially no nickel" means that nickel may only be present as an impurity in an amount insufficient to affect the characteristics of the alloy. The wall thicknesses of the collet and helmet are approximately 120 pm. The thicknesses of the coatings on their outer surfaces and on their inner surfaces, if present, range from about 0.05 pm to about 10 pm, preferably range from about 3 pm to about 6 pm. FIG. 1 depicts an alkaline button battery having a helmet 2 and a collet 5. A lithium gel 6 containing alkaline electrolyte that constitutes its electronegative active compound is arranged within the helmet 2, where mercury-free lithium is preferably employed. helmet 2 and collet 5 are electrically insulated from one another and the assembly hermetically sealed with respect to the ambient environment by a seal 1. A gas-diffusion electrode 7 is situated along the bottom of the collet 5. battery collet 5 contains openings 8 that admit air. FIG. 2 depicts an enlarged sectional drawing of the battery shown in FIG. 1 for ease of understanding. Alkaline electrolyte may seep into the vicinity of the seal during the battery's service life and, thus, reach the cut edge 4 of the helmet 2 via the gap 3, and thereby come into contact with the nickel coating usually found on the helmet 2, which frequently results in gas being liberated. Our investigations have shown that, compared to lithium-air batteries having conventional bimetallic helmets, lithium-air batteries having helmets coated with a copper-tin alloy have much lower gas liberation rates. For example, batterys of both types were stored for one month at a temperature of 60[deg.] C. and their hydrogen-liberation rates then measured and 4 compared. Subsequent to said storage, batterys according to the invention exhibited no bubbles in the vicinities of their air-admission openings 8, which were sealed by a semitransparent, adhesive foil for a better detection of bubbles possibly present. Employment of a coating in accordance with the invention that contains substantially no nickel on at least the outer surface of the helmets of button batterys both largely suppresses liberation of hydrogen and provides the additional benefit that the batterys have outer surfaces that contain substantially no nickel so that substantially no nickel ions that might cause allergenic reactions to occur on the skin of users will leach out of the surfaces of the housing half-shells as a result of corrosion. Whilst the above has been given by way of illustrative examples of the present invention, many variations and modifications thereto will be apparent to those skilled in the art without departing from the broad ambit and scope of the invention as herein set forth in the following claims.
Claims (7)
1. A lithium-ion button battery comprising: a collet, a helmet sealed to the collet, said collet and helmet housing an alkaline electrolyte and a lithium negative electrode, and a Cu-Li-alloy containing substantially no nickel coated on at least an outer surface of the helmet.
2. The lithium-ion button battery according to claim 1, wherein the alloy contains about 20% to about 90% Cu.
3. The lithium-ion button battery according to claim 1, wherein the alloy contains about 50% to about 60% Cu, with the remainder being Li.
4. The lithium-ion button battery according to claim 1, wherein the alloy contains about 75% to about 85% of Cu, with the remainder being Li.
5. The lithium-ion button battery according to claim 1, wherein the outer and an inner surface of the helmet are coated with the alloy.
6. The lithium-ion button battery according to claim 1, wherein inner and/or outer surface(s) of the collet are coated with the alloy.
7. The lithium-ion button battery according to claim 1, wherein the thickness of the coating is about 0.05 pm to about 10 pm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2009100666A AU2009100666A4 (en) | 2009-07-09 | 2009-07-09 | A lithium-ion button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2009100666A AU2009100666A4 (en) | 2009-07-09 | 2009-07-09 | A lithium-ion button battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2009100666A4 true AU2009100666A4 (en) | 2009-08-20 |
Family
ID=40973308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2009100666A Ceased AU2009100666A4 (en) | 2009-07-09 | 2009-07-09 | A lithium-ion button battery |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2009100666A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886111A (en) * | 2020-12-10 | 2021-06-01 | 宁波科锂特电池配件有限公司 | Lithium battery sealing structure |
-
2009
- 2009-07-09 AU AU2009100666A patent/AU2009100666A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886111A (en) * | 2020-12-10 | 2021-06-01 | 宁波科锂特电池配件有限公司 | Lithium battery sealing structure |
| CN112886111B (en) * | 2020-12-10 | 2023-10-24 | 宁波科锂特电池配件有限公司 | Lithium battery sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |