CN101071886A - Three-electrode electro Chemical cell - Google Patents
Three-electrode electro Chemical cell Download PDFInfo
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- CN101071886A CN101071886A CNA2007100722864A CN200710072286A CN101071886A CN 101071886 A CN101071886 A CN 101071886A CN A2007100722864 A CNA2007100722864 A CN A2007100722864A CN 200710072286 A CN200710072286 A CN 200710072286A CN 101071886 A CN101071886 A CN 101071886A
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- electrode
- barrier film
- auxiliary electrode
- negative pole
- chemical cell
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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
- Y02E60/10—Energy storage using batteries
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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
- 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
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Abstract
The invention discloses a three-electrode electrochemical batter, comprising at least a couple, which comprises anode, cathode, auxiliary electrodes, diaphragms and electrolyte, where the auxiliary electrodes are porous carbon auxiliary electrodes and connected with the cathode, and separately arranged on two sides of the anode, and permeability diaphragms are arranged between auxiliary electrodes, cathode and anode, and the anode, cathode and auxiliary electrode and diaphragms are soaked with electrolyte and the couple is arranged in a seal container with safe valve device and when multiple couples are inside, they are connected in parallel. As compared with the traditional alkali secondary batteries, it has fast charging and discharging ability and on condition of high power discharging, its service life is prolonged by above three times as compared with those of the Nickel-cadmium batteries and metal hydride nickel batteries.
Description
(1) technical field
The invention belongs to energy technology, be specifically related to a kind of chemical cell.
(2) background technology
Entered since 21 century, the consumption that reduces fossil energy more and more is subject to people's attention with the environment of protecting human survival.Solar energy, wind energy and chemical power source become main clean energy resource gradually, battery is the manifestation mode of chemical power source, along with the progress of society, industrial technology has proposed more and more higher requirement to battery performance, and the battery with high-energy, high power, long-life characteristics becomes and presses for.For example: be subjected to the technological progress of pure electric automobile, hybrid vehicle even the hydrogen car etc. of the attention of international energy and field of traffic, with battery confidential relation is arranged invariably, battery technology has become the bottleneck of electric automobile and hybrid vehicle technical development, becomes the key of clean energy resource vehicle development; For another example: be subjected to the Moped Scooter that ordinary people and each place government generally support in recent years, and, still in use had the too fast problem of capacity attenuation, and brought many worries to the user though significant improvement has been done in the battery aspect.
The chemical power source science is an a very old science, secondary cell technology of today has had the development of advancing by leaps and bounds, as ickel-cadmium cell, metal-hydrogen nickel battery, lithium ion battery etc., particularly metal-hydrogen nickel battery and lithium ion battery, specific energy have reached 60wh/kg respectively and more than the 100wh/kg.Yet, all there is common shortcoming in the secondary cell of being developed before this, at first be can not the high magnification charging and discharging, next is that charge and discharge circulation life is short, main cause is that battery power stores and the decision of release principle, the storage and the release of its electric charge are finished by electrochemical reaction, the factor that in electrochemical reaction process, has many restriction charge storage such as ohmic polarization, electrochemical polarization and release, there is certain activity material irreversible reaction factor simultaneously, therefore, are subjected to certain restriction in the high power charging-discharging ability of battery and useful life.
In order to solve the problem that battery exists in application, people developed have the long-life, the ultracapacitor of high power charging and discharging capabilities, it as Chinese patent application number is 95195510.1 patented technology, adopt the activated carbon electrodes of a pair of symmetry, formed the double electric layer capacitor of no chemical reaction; Chinese patent application number is the patented technology of 00231293.X for another example, has adopted the version of a polarizing electrode (activated carbon electrodes) and a unpolarized electrode (nickel oxide electrode), has formed hybrid super capacitor, and specific energy reaches nearly 10wh/kg.But, no matter be double electric layer capacitor or hybrid super capacitor, the specific energy that is had is all lower, is merely able to provide the energy of short time to supply with, for example, the super capacity public transport car that is subjected to extensive concern has now adopted hybrid super capacitor, owing to be subjected to the specific energy quantitative limitation, when operation, must charge or a station one charging at several stations one, bring inconvenience to actual motion, simultaneously also bring a large amount of infrastructure construction problems, increased operation cost.Therefore, ultracapacitor only is applicable to that the short time high-powerly discharges and recharges application.
In order to solve the shortcoming that battery and ultracapacitor exist in application, people have proposed the application scheme that battery and ultracapacitor are united use in application, though technical feasible, system cost and system bulk improve greatly, also there is certain problem in actual applications.
(3) summary of the invention
The object of the present invention is to provide a kind of novel high-specific-power, high-energy-density, long-life three-electrode electro Chemical cell.
The objective of the invention is to realize by following scheme: it comprises that at least one electricity is right, electricity is to being made up of positive pole, negative pole, auxiliary electrode, barrier film and electrolyte, auxiliary electrode is the porous charcoal auxiliary electrode, and link to each other with negative pole, place anodal both sides respectively, auxiliary electrode and negative pole and positive interpolar are provided with ventilative property barrier film, be soaked with electrolyte in positive pole, negative pole, auxiliary electrode and the barrier film, electricity is to being contained in the airtight container that has a relief valve device, in have a plurality of electricity to the time electricity to parallel connection.
The present invention also has some technical characterictics like this:
1, described electric centering positive pole, negative pole, auxiliary electrode, barrier film are to form according to negative pole-barrier film-positive pole-barrier film-auxiliary electrode stack combinations;
2, described electric centering positive pole, negative pole, auxiliary electrode, barrier film are to form according to auxiliary electrode-barrier film-positive pole-barrier film-negative pole stack combinations;
3, the collector of described electric centering negative pole and auxiliary electrode links to each other;
4, described auxiliary electrode is to be made by porous charcoal, and porous charcoal is activated carbon powder, active carbon fiber fabrics or nanometer charcoal;
5, described positive pole is a nickel oxide electrode;
6, described negative pole is hydrogen-bearing alloy electrode or cadmium oxide electrode;
7, described barrier film is the gas permeability alkaline battery separator, and material is polypropylene, polyethylene or glass fibre;
8, described electrolyte is 30%KOH solution.
The battery of prior art is in when work, when running into that the short time, big electric current inputed or outputed, because electrochemical polarization is serious, electrochemical reaction rates is relatively slow, inputing or outputing of big electric current is difficult to realize, simultaneously battery caused serious harm, and shortened battery life greatly.The three-electrode battery that the present invention relates to is when work, when big electric current inputs or outputs, because the auxiliary electrode charge storage realizes by absorption of super large specific surface area active carbon electrode surface and desorption, there is not electrochemical reaction, and electrochemical polarization is very little, therefore, can realize quick input of electric charge and release in actual applications, the big electric current input and output of short time often exist, start to walk as electric motor car, quicken, braking energy recovery etc., battery has been caused great impact, adopted the auxiliary electrode technology in the technology of the present invention, effectively alleviated the impact of transient high-current anticathode plate, thereby prolonged the useful life of battery, will improve greatly by the three-electrode battery life-span of manufacturing of the present invention.
(4) description of drawings
Fig. 1 is negative pole when discharging and recharging, auxiliary electrode and three-electrode battery total current graph of a relation;
Fig. 2 is that the three-electrode battery combination of electrodes is arranged and connection diagram.
(5) embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
In conjunction with the accompanying drawings, in Fig. 1, I
1Be cathodal current, I
2Be the auxiliary electrode electric current, I is a total current.Three-electrode battery when big electric current input and output, I
1Increase I in time gradually
2Reduce gradually in time, I equals I
1With I
2Sum.
In Fig. 2, anodal 1 can be added mixing such as adhesive, conductive agent, additive by commercially available nickel hydroxide and attached to making on the collector; Auxiliary electrode 2 can be added mixing such as adhesive, conductive agent by commercially available activated carbon powder and attached to making on the collector, also can be by active carbon fiber fabrics attached to making on the collector; Negative pole 3 can be added mixing such as adhesive, conductive agent, additive by commercially available hydrogen bearing alloy or cadmium oxide and attached to making on the collector; Barrier film 4 is commercially available alkaline battery separator, and material is polypropylene, polyethylene etc. usually.
The compound mode of present embodiment electrode and barrier film is as shown in Figure 2 successively in proper order: the anodal 1-barrier film of the anodal 1-barrier film of auxiliary electrode 2-barrier film 4-4-negative pole 3-barrier film 4-4-auxiliary electrode 2......, carry out successively.Also can begin combination from negative or positive electrode.Each three-electrode battery exists a nickel oxyhydroxide 1, hydrogen storage alloy negative or cadmium oxide negative electrode 3, active carbon auxiliary electrode 2 and two barrier films 4 at least, can there be a plurality of electrode pairs in actual conditions according to three-electrode battery is used in a three-electrode battery.This three-electrode battery by the choose reasonable to capacity coupling between positive pole 1, negative pole 3 and the auxiliary electrode 2, can be produced the battery in different specific energies, specific power and life-span in manufacturing and designing.
According to the three-electrode battery that design philosophy of the present invention and embodiment are made, specific energy can reach more than the 40wh/kg, and specific power reaches more than the 1000w/kg, and charge and discharge circulation life can reach more than 2000 times, can satisfy the requirement of using electricity system fully.
Claims (9)
1, a kind of three-electrode electro Chemical cell, it comprises that at least one electricity is right, it is characterized in that: electricity is to being made up of positive pole, negative pole, auxiliary electrode, barrier film and electrolyte, auxiliary electrode is the porous charcoal auxiliary electrode, and link to each other with negative pole, place anodal both sides respectively, auxiliary electrode and negative pole and positive interpolar are provided with ventilative property barrier film, be soaked with electrolyte in positive pole, negative pole, auxiliary electrode and the barrier film, electricity is to being contained in the airtight container that has a relief valve device, in have a plurality of electricity to the time electricity to parallel connection.
2, three-electrode electro Chemical cell according to claim 1 is characterized in that, described electric centering positive pole, negative pole, auxiliary electrode, barrier film are to form according to negative pole-barrier film-positive pole-barrier film-auxiliary electrode stack combinations.
3, three-electrode electro Chemical cell according to claim 1 is characterized in that, described electric centering positive pole, negative pole, auxiliary electrode, barrier film are to form according to auxiliary electrode-barrier film-positive pole-barrier film-negative pole stack combinations.
4, three-electrode electro Chemical cell according to claim 1 is characterized in that, the collector of described electric centering negative pole and auxiliary electrode links to each other.
5, three-electrode electro Chemical cell according to claim 1 is characterized in that, described auxiliary electrode is to be made by porous charcoal, and porous charcoal is activated carbon powder, active carbon fiber fabrics or nanometer charcoal.
6, three-electrode electro Chemical cell according to claim 1 is characterized in that, described positive pole is a nickel oxide electrode.
7, three-electrode electro Chemical cell according to claim 1 is characterized in that, described negative pole is hydrogen-bearing alloy electrode or cadmium oxide electrode.
8, three-electrode electro Chemical cell according to claim 1 is characterized in that, described barrier film is the gas permeability alkaline battery separator, and material is polypropylene, polyethylene or glass fibre.
9, three-electrode electro Chemical cell according to claim 1 is characterized in that, described electrolyte is 30%KOH solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100722864A CN100481601C (en) | 2007-05-30 | 2007-05-30 | Three-electrode electro chemical cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100722864A CN100481601C (en) | 2007-05-30 | 2007-05-30 | Three-electrode electro chemical cell |
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| Publication Number | Publication Date |
|---|---|
| CN101071886A true CN101071886A (en) | 2007-11-14 |
| CN100481601C CN100481601C (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100722864A Expired - Fee Related CN100481601C (en) | 2007-05-30 | 2007-05-30 | Three-electrode electro chemical cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216537B (en) * | 2007-12-27 | 2012-10-03 | 上海万宏动力能源有限公司 | Single-electrode potential measurement method suitable for alkaline sealed cell and its device |
| WO2014101863A1 (en) * | 2012-12-31 | 2014-07-03 | Liu Jun | Battery electrode having auxiliary electrode structure, and high-power battery |
| CN107958996A (en) * | 2017-12-15 | 2018-04-24 | 四川大学 | The compound negative electrode of iron-hydrogen storage, Ni-base accumulator and preparation method thereof |
| CN113661398A (en) * | 2018-11-29 | 2021-11-16 | 株式会社Lg新能源 | Cell performance measuring method |
-
2007
- 2007-05-30 CN CNB2007100722864A patent/CN100481601C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216537B (en) * | 2007-12-27 | 2012-10-03 | 上海万宏动力能源有限公司 | Single-electrode potential measurement method suitable for alkaline sealed cell and its device |
| WO2014101863A1 (en) * | 2012-12-31 | 2014-07-03 | Liu Jun | Battery electrode having auxiliary electrode structure, and high-power battery |
| CN107958996A (en) * | 2017-12-15 | 2018-04-24 | 四川大学 | The compound negative electrode of iron-hydrogen storage, Ni-base accumulator and preparation method thereof |
| CN107958996B (en) * | 2017-12-15 | 2020-10-27 | 四川大学 | Iron-hydrogen storage composite negative electrode, nickel-based storage battery and preparation method thereof |
| CN113661398A (en) * | 2018-11-29 | 2021-11-16 | 株式会社Lg新能源 | Cell performance measuring method |
| CN113661398B (en) * | 2018-11-29 | 2024-06-07 | 株式会社Lg新能源 | Method for measuring performance of cell and method for measuring performance of secondary battery |
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| Publication number | Publication date |
|---|---|
| CN100481601C (en) | 2009-04-22 |
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Granted publication date: 20090422 Termination date: 20140530 |