WO2002015297A2 - Electrochemical cells and an interchangeable electrolyte therefore - Google Patents
Electrochemical cells and an interchangeable electrolyte therefore Download PDFInfo
- Publication number
- WO2002015297A2 WO2002015297A2 PCT/US2001/025019 US0125019W WO0215297A2 WO 2002015297 A2 WO2002015297 A2 WO 2002015297A2 US 0125019 W US0125019 W US 0125019W WO 0215297 A2 WO0215297 A2 WO 0215297A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrolyte
- cell
- interchangeable
- electroplating
- battery
- Prior art date
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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
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
- C25D3/32—Electroplating: Baths therefor from solutions of tin characterised by the organic bath constituents used
-
- 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
- H01M10/06—Lead-acid accumulators
- H01M10/08—Selection of materials as electrolytes
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Definitions
- TECHNICAL FIELD This invention relates to electrochemical cells including secondary cells and electroplating cells, and to an electrolyte having an additive for use therein to support interchangeable use of the electrolyte between different electrochemical cells.
- a disadvantage encountered in electrochemical cells used in electroplating processes concerns the unequal deposition of metal on the surfaces of the negative electrodes. Generally, a higher current density occurs at projections on the surfaces of the negative electrodes leading to a buildup of metal crystals in these areas.
- This disadvantage is conventionally addressed by the addition of small quantities of smootheners or brighteners to the electrolyte of the electroplating cell. These can include natural gums and resins or synthesized compounds and mixtures which have similar plating properties. Other additives are typically also used to promote the plating process.
- Some additives have been proposed for use, for example in zinc-alkaline batteries.
- a quaternary ammonium polymer has been proposed in U.S. Patent No. 3,660,170 to Rampel, in respect of a rechargeable battery, and an electroplating cell to inhibit the formation of excessive dendritic zinc on the negative plates of these cells.
- Some quaternary ammonium polymers were proposed in U.S. Patent No. 3,877,993 to Davis, for use in dry cells to reduce the stand deterioration of the negative plates of these cells.
- a quaternary ammonium monomer was proposed in U.S. Patent no. 3,928,066 to Lewenstein, for use in conventional lead-acid batteries to inhibit the evolution of hydrogen gas from the negative plates and thereby attenuate the loss of water from these batteries. Again, no suggestion on preparation of an interchangeable electrolyte is found.
- an electrochemical cell comprising a positive electrode, an opposed negative electrode, an aqueous electrolyte in ionic contact with a negative electrode , and a deposition modifying agent for inhibiting electrodeposition on the negative electrode of metal ions emanating from the positive electrode thereby to reduce or inhibit mass gain of the negative electrode.
- an interchangeable electrolyte which can be used in battery cells as well as electroplating cells.
- the interchangeability is achieved by incorporating a surface active deposition modifying additive that renders the electrolyte interchangeable, while further enhancing battery life during battery use, and promoting smooth plating in an electroplating cell.
- the deposition modifying additives of the invention while inhibiting dendritic growth in a battery cell electrolyte, also support smooth plating when the same electrolyte is used in an electroplating cell, such that spent battery acid could be re-used in an electroplating cell.
- the additive in each case promotes more organized deposition, which in the case of a battery cell, limits dendritic growth, increasing battery life, and in the case of an electroplating cell, promotes a smooth even finish.
- an electrolyte containing the additive is interchangeable in use, both when fresh or when recycled.
- an interchangeable electrolyte contains a deposition modifying agent which is preferably of a type which is ionic in nature and which is attracted to the surface of the negative electrode, thereby preventing or inhibiting deposition on the negative electrodes of metal ions originating from the positive electrode when attracted in normal operation to the negative electrode.
- the deposition modifying agent may preferably include a polar aspect and a non-polar aspect so as to have an affinity for water as well as oils, fats and the like.
- the non-polar aspect preferably includes an alkyl substituent, which provides a barrier to ions originating from the positive electrode.
- the electrochemical cell is preferably a secondary cell, such as a lead acid battery cell, for example, or an electroplating cell, such as a tin electroplating cell, for example.
- the electrochemical cell may also be a gel electrolyte battery cell.
- the combination of electrolyte and deposition moderating agent provides an electrolyte which is interchangeable between the secondary cell and the electroplating cell on an equivalent volume basis or by concentration or dilution thereof until it reaches the required or optimum specific gravity for use in the secondary cell or electroplating cell, as the case may be.
- n-alkyl dimethyl benzyl ammonium chloride and sodium dioctyl sulphosuccinate have been shown to be effective to inhibit deposition on these electrodes, to enhance battery life, yet the sulfuric acid electrolyte dosed with either one of these additives can as well, whether fresh or in a spent condition, be used interchangeably in, for example, a tin electroplating cell.
- the invention extends to a method of providing an interchangeable electrolyte for use in electroplating and battery electrochemical cells comprising providing an electrolyte, adding to the electrolyte a deposition modifying agent, which is compatible with the components of the battery and electroplating electrochemical cells, being non-reactive or slowly reactive with the electrolyte and capable of being attracted to the negative electrode in order to inhibit or prevent dendritic deposition thereon of metal ions emanating from the positive electrode which are attracted to the negative electrode, and promoting smooth electroplating on the electroplating cell surface.
- a deposition modifying agent which is compatible with the components of the battery and electroplating electrochemical cells, being non-reactive or slowly reactive with the electrolyte and capable of being attracted to the negative electrode in order to inhibit or prevent dendritic deposition thereon of metal ions emanating from the positive electrode which are attracted to the negative electrode, and promoting smooth electroplating on the electroplating cell surface.
- the invention also extends to an electrochemical cell having a deposition modifying agent deposited on a component of the cell operatively in contact with an electrolyte placed in the cell so that, when an electrolyte is added to the cell, the deposition inhibiting agent associates with the electrolyte so as to be attracted to the negative electrode in order to inhibit or prevent deposition thereon of metal ions emanating from the position electrode which are attracted to the negative electrode during operation of the cell, the electrolyte after use being interchangeable and/or recyclable for use in a different electrochemical cell.
- Fig. 1 is a schematic drawing showing a pair of electrochemical cells for evaluating the interchangeability effect of providing an electrolyte incorporating an additive of the invention therein.
- the invention relates to the use of a deposition modifying agent or additive with an electrolyte of a type used in an electrochemical cell.
- the preferred group of chemical compounds suitable as additive is defined as any agent, solid or liquid, which when incorporated into an electrochemical cell electrolyte, promotes a reduction in the rate or type of deposition of metal on the negative electrodes of the cell, thereby providing an improvement in the quantity and quality of electrodeposition which is of benefit to the operation of the electrochemical cell, whether as a battery or as an electroplating cell.
- the type of electrochemical cell suitable for use with an electrolyte and additive of the invention includes battery cells and electroplating cells, as well as other cell types including electrolytic and electrolysis cells.
- the benefit accrues as an increase in the service life of the cells.
- the benefit manifests itself by providing a smoother plated-on surface.
- the interchangeability of the electrolyte allows reuse and/or recycle in a different application, substantially reducing the production of waste electrolyte.
- Spent electrolyte from a battery for example, can be collected and used as a replenishment in an electroplating cell, or be blended with fresh electrolyte and used in a new battery.
- the electrolyte has as substantially its only additive a material which promotes smooth plating or enhanced battery life, it retains its value even after its primary function has been achieved.
- a sulfuric acid electrolyte including an additive of the invention is suitable for a lead-acid battery cell as well as a tin electroplating cell, through which association it will provide the benefit which manifests itself in electroplating cells.
- a receiving electroplating cell need not usually be already associated with an additive or an electrolyte at the time of transference.
- the additive preferably consists of an organic compound that is compatible with the materials of the electrochemical cell and does not react, or reacts only very slowly, with the electrolyte.
- the organic compound preferably has a polar aspect to its molecule as well as a non-polar aspect, and therefore has an affinity for water as well as oils, fats and the like.
- the compounds that are successful with a particular metal in combination with a particular electrolyte are not necessarily successful with other metal-electrolyte combinations, and selection is therefore mainly empirical.
- organic compounds having at least 8 carbon atoms may be used, more preferably having from about 8 to 28 carbon atoms, and most preferably having about 16 to 28 carbon atoms.
- those organic compounds having a molecular weight of from about 250 to 550, more preferably 350 to 450, and most preferably about 400 to 410 may be used. Quaternary ammonium compounds are preferred.
- organic compounds that have proved useful with tin and lead electrodes in a sulfuric acid electrolyte include n-alkyl dimethyl benzyl ammonium chloride and sodium dioctyl sulphosuccinate. Significantly the former is cationic and the latter is anionic in solution.
- n-alkyl dimethyl benzyl ammonium sulphate didecyl dimethyl ammonium chloride, didecyl methyl oxyethyl ammonium propionate, as well as a wide range of other quaternary ammonium compounds including pyridine and quinoline.
- Certain amines, amine salts and amides have also proved useful.
- the n-alkyl dimethyl benzyl ammonium chloride is water based while the sodium dioctyl sulphosuccinate is methanol based.
- the structure of the n-alkyl dimethyl benzyl ammonium chloride molecule is approximated by the formula:
- R corresponding to an n-alkyl substituent which is a mixture of C 12 , C 14 and C 16
- R corresponding to a C g alkyl substituent.
- Alkyl substituents are generally "straight-chain" hydrocarbons, which consist of an undulating chain of carbon atoms, which in the case of C g is represented as follows:
- Adjacent molecules typically arrange themselves in a solution in an appropriate shape to maximize the distance between the alkyl hydrogen atoms.
- alkyl substituents are strongly water repelling, within certain molecules they are able to dissolve in water due to the molecules' charged "heads" having an affinity for polar molecules, such as water.
- agents comprising molecules that are ionized
- they are expected to be attracted to the surface of the negative electrode by electrostatic attraction in a manner that is similar to the way metal ions are attracted.
- the degree of attraction is dependent on the electrochemical potential of the substance in question.
- these agents appear to present a web or a tangle of alkyl chains which appear to be comparatively impervious to the metal ions originating from the positive electrode, and which are attracted to the negative electrode, at least to the extent that they preclude dendritic growth. It further appears from tests carried out that the n-alkyl dimethyl benzyl ammonium ion is attracted to the extremities of metal crystals that are growing on the surface of the negative electrode and the dioctyl sulphosuccinate ion is attracted closer to the surface of the electrode.
- the deposited material can be weighted, showing that the rate of deposition is, in both cases, very similar.
- an apparatus required to demonstrate the practice of the invention comprises an electrochemical unit 10 which include a power source 12 and a set of electrochemical cells 14.
- the set of electrochemical cells 12 comprises a first cell 16 and second cell 18.
- the first cell 16 includes a positive electrode 20, a negative electrode 22 and an electrolyte 24.
- the positive electrode 20 and the negative electrode 22 are immersed in, or otherwise conveniently brought into contact with, the electrolyte 24.
- the second cell 18 includes a positive electrode 26, a negative electrode 28 and an electrolyte 30.
- the positive electrode 26 and the negative electrode 28 are immersed in, or otherwise conveniently brought into contact with, the electrolyte 30.
- the power source 12 includes a positive output terminal 32 and a negative output terminal 34.
- the power source 12 provides an electric current of controlled magnitude to the first cell 16 and the second cell 18, which are connected in series, with the positive terminal 32 connected to the positive electrode 26, the negative electrode 28 connected to the positive electrode 20 and the negative electrode 22 connected to the negative terminal 34.
- This arrangement ensures that the current flowing through the first cell 16 is matched as closely as is feasible by the current flowing through the second cell 18. This further ensures that the electrolytic reactions that occur within the first cell 16 and within the second cell 18 may be predicted to be closely matched in accordance with Faraday's laws.
- an electrochemical cell of the invention which is not shown, will correspond to the cell 16 and comprises at least one positive electrode corresponding to the electrode 20, at least one negative electrode corresponding to the electrode 22, and an electrolyte which is of the same composition as the electrolyte 24.
- the first cell 16 is not provided with an electrolyte at first.
- a portion of the electrolyte drawn from the cell for the invention is transferred into the first cell 16, thereby providing the first cell 16 with a requisite quantity of electrolyte for its proper function.
- the negative electrode of the cell of the invention and the corresponding negative electrode 22 need not be constructed of and need not contain the same elements or metals, nor contain any elements or metals they may have in common in an equal proportion.
- the second cell 18 is provided with a suitable quantity of an electrolyte 30, which quantity is procured from a source substantially free of any known agent as herein described.
- the positive electrodes 20 and 26 typically contain in excess of 90 percent by weight of tin, while the negative electrodes 22 and 28 typically have a 60:40 to 50:50 tin-lead solder composition.
- the electrodes wire may be conventionally coiled prior to incorporation into the cells 16 and 18, having a typical coil diameter of 10 millimeters and a spacing between the positive electrode 26 and the negative electrode 28 of at least 30 millimeters.
- the electrodes 20 and 22 are arranged to match the disposition of the corresponding electrodes 26 and 28.
- the electrochemical cells 16 and 18 are each rated to conventionally contain an approximate volume of 100 milliliters of electrolyte.
- the cells 16 and 18 and their components may be scaled up or down dimensionally, as well as up numerically.
- the power source 12 is activated to commence electroplating operation.
- the current in the circuit is controlled by a regulator represented by a rotatable controller 36.
- the current in the electrochemical cell circuit is indicated by an ammeter 38 and the voltage across the electrochemical cells 16 and 18 is indicated by a voltmeter 40.
- the power source regulates the current in the circuit at 150 milliamperes and the voltage self-adjusts according to cell requirement, but does not exceed 3.5 V/cell.
- the current is regulated to an accuracy of plus- minus 10 percent.
- a comparison of five samples of electrolyte simulating five samples drawn from various sources was performed.
- the electrochemical cells 16 and 18 were electrically connected in series and therefore an additional three cells corresponding to the cell 16 and having electrodes corresponding to the electrodes 20 and 22 were connected in series with the cells 16 and 18. While the power source 12 was obliged to supply a voltage totaling 2 Vi times the voltage requirement of two cells, the current in the circuit was unchanged.
- All five positive electrodes were constructed of 2 millimeter diameter 97:3 tin-silver solder wire and weighed 10.00 g each.
- All five negative electrodes were constructed of 3.2 millimeter diameter 50:50 tin-lead solder wire and weighed 10.00 g each.
- the electrochemical cells were numbered consecutively, with number 1 being allocated to the cell 18, number 2 allocated to the cell 16, and numbers 3, 4, and 5 being allocated to the additional three cells in the circuit.
- Measured samples of 100 milliliters of electrolyte were procured from the same container of 1.250 specific-gravity battery-grade sulfuric acid. Each of the five samples received 1.5 milliliters of water containing various additive agents, with exception of electrolyte 1, which received only water. The 1.5 milliliters of additive raised the volume of electrolyte of all five cells to 101.5 milliliters and reduced the specific gravity marginally but equally.
- cell 1 contained plain sulfuric acid in water.
- Cell 2 contained the same quantity of acid in water plus 300 parts per million (ppm), n-alkyl dimethyl benzyl ammonium chloride.
- Cell 3 included 300 ppm n-alkyl dimethyl benzyl ammonium sulphate.
- Cell 4 included 300 ppm didecyl dimethyl ammonium chloride.
- Cell 5 included 300 ppm sodium dioctyl sulphosuccinate.
- the negative electrodes were weighed after 36 hours of electrochemical activity:
- NEGATIVE ELECTRODE 3 10.81 g
- NEGATIVE ELECTRODE 4 10.95 g
- the plain-electrolyte electrode gained 0.99 g while the electrodes exposed to additives of the invention gained less weight.
- the n-alkyl dimethyl benzyl ammonium chloride and the sodium dioctyl sulphosuccinate appear to possess equal efficacy having provided the least weight gain in equal proportion, at roughly 25 percent down.
- electrode 1 received a poor quality fluffy covering
- electrodes 4 and 5 received a more compact covering
- electrodes 2 and 3 received an electroplate finish having potential mirror-quality finish with system adjustment.
- All three positive electrodes were constructed out of segments taken out of the positive plates of a motive power lead-acid battery cell.
- the grid construction contained about 6 percent of antimony in lead.
- the paste consisted of lead-dioxide. Although it is difficult to match the weights of pasted plate segments upon disassembly of positive battery plates, it was possible to weigh out three plates having a weight of about 15 g each, plus/minus 0.5 g.
- a plain copper negative can be introduced into a lead-acid battery cell without discernable deleterious effect provided that a charging current is maintained.
- a lead film is deposited on the surface of the copper electrode which assists in establishing the potentials pertaining to a conventional lead- acid battery cell.
- negative electrodes were consequently constructed out of a copper foil which possessed a bright reflective surface, and the cells were fully assembled, connected and the power source was energized, before the three samples of electrolyte were poured into all three cells virtually simultaneously.
- the electrolyte of cell 6 was provided with ingredients equivalent to the electrolyte of cell 1 in Example 1.
- the electrolyte of cell 7 was provided with ingredients equivalent to the electrolyte of cell 2 in Example 1.
- the electrolyte in cell 8 was provided with ingredients equivalent to the electrolyte of cell 5 in Example 1.
- the construction of the cells facilitated visual observation of the negative plates undergoing test, and after several hours a visible dulling of the plate surfaces became apparent. This dulling was made easily visible by the reddish coloration and the brightness of the surfaces of the negative electrode plates contrasting sharply against the pronounced greying and dulling produced by the on-plating lead, and antimony, which originated form the positive plates.
- electrode 6 After 24 hours the appearance of all the negative plate electrodes had undergone significant change, with electrode 6 appearing quite dark, verging on black with only a slight coppery tint showing; electrode 7 appearing relative coppery with a slight grayish tinge; and electrode 8 appearing somewhat darker than electrode 7, but very much more coppery than electrode 6.
- Battery 1 contained stock standard electrolyte and was replenished every two weeks with plain battery water.
- Battery 2 contained stock standard electrolyte to which had been added a dosage of n-alkyl dimethyl benzyl ammonium chloride to provide a concentration in the electrolyte of 200 parts per million.
- Battery 2 was replenished every two weeks with plain battery water to which had been added a dosage of n-alkyl dimethyl benzyl ammonium chloride to provide a concentration in the water of 800 parts per million.
- a corresponding cell on each matter was selected, and the elements therein carefully disassembled.
- Six negative plates from one cell of battery 1 and six negative plates from the corresponding cell of battery 2 were weighed including their associated separators to ensure that any plated-on material would be included in the measurement.
- BATTERY 1 plain
- BATTERY 2 additive
- 374.4 g 375.0 g
- a negative electrode identical to the negative electrodes employed in Example 1 was coated with a layer of 50 percent concentration n-alkyl dimethyl benzyl ammonium chloride to an extent approximately equivalent to the portion of the electrode which is submerged in the electrolyte while in use. This equated to about 36 millimeters of length.
- the coating procedure included hanging the electrode vertically from a scale and allowing the coating liquid to drip off the electrode subsequent to an excess quantity having been applied.
- the electrode weight reached 10.03 g.
- the electrode was briefly inverted, to allow the coating to establish itself on the surface without further dripping. Thereafter the electrode was baked in an oven at 120°C, (248 °C), for two hours.
- the electrode was placed in a vessel containing 100 milliliters of water, and the vessel was sealed, and agitated to remove as much as possible of the coating and to dissolve it in the water. Thereafter the concentration of n-alkyl dimethyl benzyl ammonium chloride in the 100 milliliter volume of water was ascertained by a spectrophotometer means. A concentration of 160 parts per million was revealed, which corresponds favorably with a theoretical concentration of a 50 percent solution weighing 0.03 g, at 0.98 SG in 100 milliliters of water, equivalent to 153 parts per million.
- a suitable quantity of electrolyte known to contain a requisite concentration of n-alkyl dimethyl benzyl ammonium chloride, and having a specific gravity of 1.120 was concentrated by simple boiling, until the specific gravity was estimated to have attained a value slightly in excess of 1,250. Thereafter, upon cooling, water was added until the specific gravity equated to 1.250.
- a 100 milliliter volume of this adjusted electrolyte was employed in a cell and tested in accordance with the procedure outline in Example 1. The electrolyte provided substantially identical performance to that of cell number 2.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002520326A JP2004507046A (en) | 2000-08-11 | 2001-08-10 | Electrochemical cells and exchangeable electrolytes for electrochemical cells |
EP01962025A EP1410451A2 (en) | 2000-08-11 | 2001-08-10 | Electrochemical cells and an interchangeable electrolyte therefore |
AU83241/01A AU782079B2 (en) | 2000-08-11 | 2001-08-10 | Electrochemical cells and an interchangeable electrolyte therefore |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2000/4112 | 2000-08-11 | ||
ZA200004112 | 2000-08-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002015297A2 true WO2002015297A2 (en) | 2002-02-21 |
WO2002015297A3 WO2002015297A3 (en) | 2003-01-09 |
Family
ID=25588861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/025019 WO2002015297A2 (en) | 2000-08-11 | 2001-08-10 | Electrochemical cells and an interchangeable electrolyte therefore |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1410451A2 (en) |
JP (1) | JP2004507046A (en) |
CN (1) | CN1636297A (en) |
AU (1) | AU782079B2 (en) |
WO (1) | WO2002015297A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106025421A (en) * | 2016-08-12 | 2016-10-12 | 合肥国轩高科动力能源有限公司 | Electroplating peeling recovery technology of lithium battery electrode |
US10020479B2 (en) | 2013-08-08 | 2018-07-10 | Sion Power Corporation | Self-healing electrode protection in electrochemical cells |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8728651B2 (en) * | 2010-08-30 | 2014-05-20 | Highwater Innovations, Llc | Low aspect ratio spiral-wound VRLA battery |
US20140356729A1 (en) * | 2013-05-31 | 2014-12-04 | Johan C. Fitter | Metal Accumulation Inhibiting And Performance Enhancing Supplement And A System For Delivering The Supplement |
CN104064816B (en) * | 2014-05-14 | 2016-10-05 | 超威电源有限公司 | A kind of electrolysis additive of lead-acid accumulator suppression liberation of hydrogen and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660170A (en) * | 1970-04-08 | 1972-05-02 | Gen Electric | Dendrite-inhibiting additive for battery cell having zinc electrode |
US4601847A (en) * | 1983-08-22 | 1986-07-22 | Macdermid, Incorporated | Composition for use in electroplating of metals |
US4673470A (en) * | 1985-02-22 | 1987-06-16 | Keigo Obata | Tin, lead, or tin-lead alloy plating bath |
US4801511A (en) * | 1985-06-28 | 1989-01-31 | Union Oil Company Of California | Battery cell electrolyte |
-
2001
- 2001-08-10 JP JP2002520326A patent/JP2004507046A/en not_active Withdrawn
- 2001-08-10 AU AU83241/01A patent/AU782079B2/en not_active Ceased
- 2001-08-10 EP EP01962025A patent/EP1410451A2/en not_active Withdrawn
- 2001-08-10 CN CNA018027768A patent/CN1636297A/en active Pending
- 2001-08-10 WO PCT/US2001/025019 patent/WO2002015297A2/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660170A (en) * | 1970-04-08 | 1972-05-02 | Gen Electric | Dendrite-inhibiting additive for battery cell having zinc electrode |
US4601847A (en) * | 1983-08-22 | 1986-07-22 | Macdermid, Incorporated | Composition for use in electroplating of metals |
US4673470A (en) * | 1985-02-22 | 1987-06-16 | Keigo Obata | Tin, lead, or tin-lead alloy plating bath |
US4801511A (en) * | 1985-06-28 | 1989-01-31 | Union Oil Company Of California | Battery cell electrolyte |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10020479B2 (en) | 2013-08-08 | 2018-07-10 | Sion Power Corporation | Self-healing electrode protection in electrochemical cells |
US10573869B2 (en) | 2013-08-08 | 2020-02-25 | Sion Power Corporation | Self-healing electrode protection in electrochemical cells |
CN106025421A (en) * | 2016-08-12 | 2016-10-12 | 合肥国轩高科动力能源有限公司 | Electroplating peeling recovery technology of lithium battery electrode |
CN106025421B (en) * | 2016-08-12 | 2018-09-18 | 合肥国轩高科动力能源有限公司 | A kind of plating stripping recovery method of electrode of lithium cell |
Also Published As
Publication number | Publication date |
---|---|
AU782079B2 (en) | 2005-06-30 |
AU8324101A (en) | 2002-02-25 |
EP1410451A2 (en) | 2004-04-21 |
JP2004507046A (en) | 2004-03-04 |
CN1636297A (en) | 2005-07-06 |
WO2002015297A3 (en) | 2003-01-09 |
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