CN101136489A - Electrolyte containing nano carbon tube - Google Patents
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- CN101136489A CN101136489A CNA2006101117889A CN200610111788A CN101136489A CN 101136489 A CN101136489 A CN 101136489A CN A2006101117889 A CNA2006101117889 A CN A2006101117889A CN 200610111788 A CN200610111788 A CN 200610111788A CN 101136489 A CN101136489 A CN 101136489A
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Abstract
This invention relates to an electrolyte containing nm carbon tubes, in which, carbon nm tubes of a preset weight percentage are added in a sulfuric solution, the weight percentage of which is 16-70, and that of the carbon nm tubes is 0.001-0.1 taking weight of the sulfuric solution as 100% here, in addition to that, SiO2 in a preset weight percentage can be added in the electrolyte as an additive material and content of nm carbon tube in the electrolyte can be adjusted to form an additive of electrolyte, which can be diluted to become an electrolyte filled in a lead-acid battery after the carbon nm tubes in it reach to a preset concentration.
Description
Technical field
The invention relates to a kind of electrolyte that is used for lead-acid battery,, can be filled in the lead-acid battery electrolyte as this lead-acid battery particularly about a kind of electrolyte that contains CNT (carbon nano-tube) and sulfuric acid solution.
Background technology
Battery mostly is made up of yin, yang electrode, electrolyte and shell, and wherein, negative electrode is in order to the acquisition superior performance, and anode is to carry out reacted surface in order to increase to amass, and electrolyte generally also is called electrolyte.
After redox reaction has taken place in the anode and cathode of electrolyte in battery, electronics produces electric current by the outside line transmission, at internally charged ion then is to transmit between anode and cathode by electrolyte, therefore adopts a good electrolyte can make the discharge of anode and cathode more efficient.And in the selection of electrolyte material, must have not active material with electrode react, have high-k, low-viscosity with improve ionic conductance, have higher boiling point, low melting point is with the operating temperature range of augmentation battery and the characteristics such as stable in properties of itself.
And the internal resistance of battery is decided by the impedance of the resistance and the ion flow of battery lead plate, and in the charge and discharge process, the impedance of battery lead plate is constant, and still, the impedance of ion flow will change to some extent with the increase and decrease of the variation of concentration of electrolyte and charged ion.
Electrolyte adopts sulfuric acid solution in the lead-acid battery, is selecting sulfuric acid density 1.1g/ml to 1.6g/ml solution for use in the general electrolyte, and the percentage by weight that is scaled sulfuric acid is between 16 to 70 percentage by weights.Lead-acid battery can be divided into general non-colloid battery and colloid battery again, and colloid battery more can not ooze out sulfuric acid electrolyte, has the advantage of environmental protection.The difference of general non-colloid battery and colloid battery just is to contain in the electrolyte of colloid battery the above silicon dioxide of 3 percentage by weights of having an appointment, and the silicon dioxide of this concentration can form colloid in sulfuric acid solution, so be called colloid battery.Whether silicon dioxide can form colloid in sulfuric acid solution, except the percentage by weight of silicon dioxide, also depend on acid concentration and temperature in the sulfuric acid solution, and the kind and the characteristic of the silicon dioxide that uses.
CNT (carbon nano-tube) is nano level tubulose material, it is one of the representative material of 21st century nanosecond science and technology, because this special structure, make it have very excellent and unique characteristics such as machinery, electronics, photoelectricity, heat conduction and chemistry, make it have many potential purposes, and oneself extend to each different field fast in recent years.
In the battery association area, it is the electrode that is used in various batteries that CNT (carbon nano-tube) is used the most widely, and for example United States Patent (USP) 7,029,796,7,029,794,6,703,163,6,440,610 are used for CNT (carbon nano-tube) at the electrode of lithium battery with the TaiWan, China patent No. 1232607 and WO2005022666; United States Patent (USP) 6,706,431 CNT (carbon nano-tube) are used for the electrode of fuel cell; The TaiWan, China patent No. 1241029 is used for CNT (carbon nano-tube) at the electrode of solar cell; The TaiWan, China patent No. 1236779 is used for CNT (carbon nano-tube) at the electrode of Ni-MH battery; Chinese patent publication number CN1505186 and U.S. Patent Publication No. US2005181282 are used for CNT (carbon nano-tube) the both positive and negative polarity of lead-acid battery.United States Patent (USP) 6,917,181 disclose a kind of power supply unit, have wherein used the battery that has CNT (carbon nano-tube) on the electrode.United States Patent (USP) 6,805,985 also disclose a kind of act as a fuel hydrogen storage material of battery of CNT (carbon nano-tube) that uses.United States Patent (USP) 6,781,817 disclose the capacitor that has CNT (carbon nano-tube) on a kind of electrode.United States Patent (USP) 6,454,816 are used for the electrode of super capacitor with CNT (carbon nano-tube).
The related application of CNT (carbon nano-tube) in battery electrolyte is the present less field of being noted.Chinese patent publication number CN1505191 (authorizes publication number CN1219336C, patent No. ZL02144681.4) announcement is a kind of is suitable for adding in the lead-acid accumulator electrolyte, include the aqueous additive of nanometer carbon material and dispersant, wherein nanometer carbon material is 100 with the ratio of dispersant: 10-100: 60.Learn that through conversion the 1-dimention nano carbonaceous material accounts for the 0.63-45.5% of electrolyte weight ratio in this additive.This additive is added in the lead acid accumulator, can improve the active material utilization of lead acid accumulator, but only make the charging capacity of lead acid accumulator improve 7.7% (bringing up to 4.2Ah) by 3.9Ah.But in this patent,, the electrolyte of higher lifting effect need be arranged still on the industry to the lifting of the charging capacity of battery and not high enough.And this patented technology does not provide the effect of big electric current quick charge.
In addition, use the carbon material of non-nano carbon pipe to add in the electrolyte of battery, some relevant patents are also arranged.For example to disclose a kind of carbon powder particle be the following lead acid accumulator carbon activator of 15nm to Chinese patent publication number CN1440087, and wherein carbon powder particle is by the electrolytic oxidation manufactured.Purity greater than 99.5% graphitic carbon plate, is adopted DC power supply, the dry powder particle after the carbon activator liquid of the made 5-15nm of electrolytic oxidation and the oven dry.This carbon activator is added in the brand-new lead-acid battery, can use the discharge capacity of storage battery to increase by 19% (being increased to 100 minutes) by 84 minutes.But the employed material of this patent is spherical carbon powder particle, differs widely with the rectangular and hollow tubular structure of CNT (carbon nano-tube).And the diameter of the structure of this spherical carbon dust is 5-15nm, and CNT (carbon nano-tube) is of a size of diameter 0.5-100nm, length 0.3-50 μ m, and CNT (carbon nano-tube) has splendid conductivity and special nanoscale tubular structure, can promote the rate travel of ion in electrolyte.In addition, though this patent is mentioned the effect that large current charge and discharge can be provided in summary, there is no any data can have this effect really for this activator of evidence.Chinese patent publication number CN1697236 discloses a kind of electrolyte that has nano-sized carbon that is used in valve controlled sealed lead-acid accumulator, interior phosphoric acid and nano-carbon material, wherein phosphoric acid accounts for electrolyte 0.5-0.9 percentage by weight, and nano-carbon material accounts for the 1-7% of electrolyte weight percentage; This electrolyte can increase the discharge capacity and the useful life of battery, but this case and not mentioned CNT (carbon nano-tube).Simultaneously, the concentration of nano-carbon material belongs to general known concentration range in this piece patent, promptly more than 1 percentage by weight, far above the CNT (carbon nano-tube) low concentration of being found among the present invention that good effect is arranged, promptly below 0.1 percentage by weight (1000ppm).More than the full text of each piece patent incorporate list of references at this.
Its composition material of the electrolyte of conventional batteries and the concentration of itself all can influence the usefulness of battery itself, and the as easy as rolling off a log formation sulfuric acid concentration of traditional electrolyte gradient, and the generation of sulfuric acid concentration gradient can make the sulfuric acid skewness in the electrolyte, and can reduce the speed that the electrolyte intermediate ion moves, therefore can directly influence the conductivity of electrolyte itself, more can influence the conductive effectiveness of battery.
Summary of the invention
Main purpose of the present invention is carried and is that it adds an amount of CNT (carbon nano-tube) material in sulfuric acid solution, to promote the conductive effectiveness of this electrolyte for a kind of electrolyte that contains CNT (carbon nano-tube).
Another object of the present invention is to provide a kind of concentrated electrolysis additive that contains CNT (carbon nano-tube) that is added in the lead-acid battery.This electrolysis additive can make wherein that CNT (carbon nano-tube) becomes electrolyte after reaching a predetermined concentration via dilution, and this electrolyte can be filled in the lead-acid battery electrolyte as this lead-acid battery.
For achieving the above object, the electrolyte that contains CNT (carbon nano-tube) provided by the invention includes:
One sulfuric acid solution, wherein sulfuric acid concentration is between 16 to 70 percentage by weights;
One CNT (carbon nano-tube), this CNT (carbon nano-tube) have a predetermined percentage by weight, and this predetermined percentage by weight is between 0.001 to 0.1 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight;
This CNT (carbon nano-tube) evenly is mixed in this sulfuric acid solution, and forms the electrolyte can be filled in the lead-acid battery as this lead-acid battery.
The described electrolyte that contains CNT (carbon nano-tube), wherein, this CNT (carbon nano-tube) percentage by weight is between 0.003 to 0.072 weight ratio, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
The described electrolyte that contains CNT (carbon nano-tube), wherein, this CNT (carbon nano-tube) percentage by weight is between 0.005 to 0.018 weight ratio, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
The described electrolyte that contains CNT (carbon nano-tube), wherein, include silicon dioxide in this battery electrolyte as adding material, this silicon dioxide has a predetermined percentage by weight, and percentage by weight that should be predetermined is between 0.1 to 20 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
The described electrolyte that contains CNT (carbon nano-tube), wherein, this CNT (carbon nano-tube) is selected from one of single-wall carbon tube, double-walled carbon pipe, many walls carbon pipe or its mixture.
The described electrolyte that contains CNT (carbon nano-tube), wherein, this many walls carbon external diameter of pipe is 2 to 100 nanometers, length is 0.1 to 80 micron.
The described electrolyte that contains CNT (carbon nano-tube), wherein, this single-wall carbon tube external diameter is 0.7 to 2 nanometer, length is 0.1 to 80 micron.
The present invention also provides a kind of electrolysis additive that contains CNT (carbon nano-tube), includes:
One sulfuric acid solution;
One CNT (carbon nano-tube), this CNT (carbon nano-tube) have a predetermined percentage by weight, and this predetermined percentage by weight is between 0.1 to 30 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight;
This CNT (carbon nano-tube) evenly is mixed in this sulfuric acid solution, and form an electrolysis additive that contains CNT (carbon nano-tube) and sulfuric acid, this electrolysis additive can make wherein that CNT (carbon nano-tube) becomes electrolyte after reaching a predetermined concentration via dilution, and this electrolyte can be filled in the lead-acid battery electrolyte as this lead-acid battery.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein, this electrolysis additive also includes the interpolation material that silicon dioxide suspends as aided nano carbon pipe, this silicon dioxide has a predetermined percentage by weight, percentage by weight that should be predetermined is between 0.1 to 40 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein, this CNT (carbon nano-tube) is selected from one of single-wall carbon tube, double-walled carbon pipe, many walls carbon pipe or its mixture.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein, this many walls carbon external diameter of pipe is 2 to 100 nanometers, length is 0.1 to 80 micron.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein, this single-wall carbon tube external diameter is 0.7 to 2 nanometer, length is 0.1 to 80 micron.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein this is diluted to the electrolyte that contains CNT (carbon nano-tube) of predetermined CNT (carbon nano-tube) concentration, comprises in the dilution that sulfuric acid content is between 16 to 70 percentage by weights in the electrolyte that adds after sulfuric acid makes this dilution; The percentage by weight of its CNT (carbon nano-tube) is between 0.001 to 0.1 percentage by weight, and this percentage by weight is to be 100% calculating with the total weight of diluting sulfuric acid and water in the sulfuric acid solution of back.
The described electrolysis additive that contains CNT (carbon nano-tube), wherein this is diluted to the electrolyte that contains CNT (carbon nano-tube) of predetermined CNT (carbon nano-tube) concentration, comprise interpolation silicon dioxide in the dilution, make in the electrolyte after this dilution dioxide-containing silica between 0.1 to 20 percentage by weight, this percentage by weight is that the total weight of sulfuric acid and water is 100% calculating in the sulfuric acid solution of back to dilute.
In sum, the present invention is to include a sulfuric acid solution and a CNT (carbon nano-tube) in a battery electrolyte for the technological means that problem adopted that solves known technology, this sulfuric acid solution and this CNT (carbon nano-tube) have a predetermined percentage by weight respectively, wherein the predetermined weight percent of this sulfuric acid is between 16 to 70 percentage by weights, and the predetermined weight percent of this CNT (carbon nano-tube) is between 0.001 to 0.1 percentage by weight, and this CNT (carbon nano-tube) evenly is mixed in the mixed liquor of this sulfuric acid solution and water, and forms the electrolyte can be filled in the battery as this battery.
In another embodiment of the present invention, its electrolyte is made the kenel of the electrolysis additive that contains CNT (carbon nano-tube), this electrolysis additive can make wherein that CNT (carbon nano-tube) becomes electrolyte after reaching a predetermined concentration via dilution, and this electrolyte can be filled in the lead-acid battery electrolyte as this lead-acid battery.This electrolysis additive can be made up of the sulfuric acid solution of CNT (carbon nano-tube) and predetermined concentration.
The present invention contrasts the effect that known technology has:
Compared to prior art, the present invention is the CNT (carbon nano-tube) material that the electrolyte in this lead-acid battery is added with a predetermined weight percent, this CNT (carbon nano-tube) has splendid conductivity and has special nanoscale tubular structure, therefore can promote the rate travel of ion in electrolyte, so that this battery cathode structure and this negative battery structure are just, when the negative reaction material carries out chemical reaction preferable power supplying efficiency can be arranged, and this contains the formation that nano carbon tube electrolyte can suppress the sulfuric acid concentration gradient, and promote the speed that ion moves in electrolyte, to promote the electrochemical reaction usefulness and the conductive effectiveness of lead-acid battery itself, and higher economic benefit is provided, represent the splendid commercial surcharge of the present invention.
Simultaneously, add silica composition in the electrolyte of the present invention in addition.Because silicon dioxide has anti-sedimentation function, can be used as the interpolation material that aided nano carbon pipe suspends, except helping to prevent the CNT (carbon nano-tube) sedimentation, and also help the concentration of sulfuric acid solution evenly to distribute.
Compared to known technology, the present invention has following several innovation advantage:
(1) for lead-acid battery, the electrolyte that the present invention contains CNT (carbon nano-tube) can significantly promote capacitance, and the 0.1C discharge can improve 35%, and the 10C discharge can improve 55%, causes novel and the non-good character that can expect easily.This improvement in performance significantly surpasses the effect that other method is at present reached, and for example 7% or 19%.
(2) electrolyte of interpolation CNT (carbon nano-tube) among the present invention, can effectively promote the useful life of battery, with regard to the shock-testing of 10C40A heavy-current discharge and 1C4A large current charge, use electrolyte of the present invention can extend to more than 500% than the period (life-span) of normal electrolyte.
(3) add the electrolyte of CNT (carbon nano-tube) among the present invention, except significantly promote discharge capacity, the effect that more can promote the battery high current charge-discharge can quick charge, this also is another the main contribution and the advantage of electrolyte of the present invention.
(4) CNT (carbon nano-tube) belongs to hydrophobic material, is difficult in dispersion suspension in the aqueous solution.At present existing many researchs focus on uses different dispersants to promote the dispersion and the suspension of CNT (carbon nano-tube), comprises various interfacial agents and organic and inorganic salts.The present invention is based on the extremely low CNT (carbon nano-tube) concentration of employing, be engaged in the hyperbaric sulfuric acid solution (1.1-1.6g/ml), can effectively promote the suspension of CNT (carbon nano-tube) and the effect that performance promotes the electrolyte function, must not use any dispersant fully.Aspect in addition, the present invention also can add the auxiliary suspending agent of silicon dioxide as CNT (carbon nano-tube), and promotes the suspension of CNT (carbon nano-tube) in electrolyte.This uses silicon dioxide aided nano carbon pipe to suspend and the method for different any dispersants also is the innovative technology in this technology.
(5) application of CNT (carbon nano-tube) is very extensive, be added on various materials in, comprise composite material, sports equipment, electronic product, its addition is generally all at the 1-10 percentage by weight.The present invention adopts extremely low CNT (carbon nano-tube) content, and the 0.001-0.1 percentage by weight is low concentration not seen before in the CNT (carbon nano-tube) application, and can reaches amazing good result.
(6) in the electrolyte of the present invention, CNT (carbon nano-tube) concentration is for being lower than 0.1 percentage by weight, promptly below the 1000ppm, far below the concentration 1-7% that adopts in the general correlation technique even higher.Belong to the high price material based on CNT (carbon nano-tube), every g of value is between several dollars to tens of dollars.The present invention adopts the extremely low concentration CNT (carbon nano-tube) can reach good lead-acid battery function to improve effect, possessed splendid low-cost advantage.
(7) because the dispersing and mixing of CNT (carbon nano-tube) need the long period mix, in the consideration of economic benefit, the present invention adopts highly concentrated nano carbon pipe and sulfuric acid to mix (20-40 hour) for a long time, the CNT (carbon nano-tube) fine dispersion is suspended, become the concentrate of the electrolysis additive that contains CNT (carbon nano-tube).Can simple and easyly promptly this concentrate dilution be made during use and reach effective low concentration nano carbon tube electrolyte use; And can add the auxiliary suspending agent of silicon dioxide as CNT (carbon nano-tube).So can bring into play to save mixing the time, and reduce the economic interests that volume is transported in the nano carbon tube electrolyte storage.For example from O.7% with the CNT (carbon nano-tube) concentrated additive of 7% weight ratio, the dilution preparation becomes the O.007% nano carbon tube electrolyte of weight ratio, its dilution ratio reach respectively 100 times with 1000 times, have and significantly reduce the economic interests that mix dispersion for a long time.
Embodiment
Specific embodiment of the present invention will be further described by following examples.
1. material
The material that uses in the embodiment of the present invention is as follows:
The concentrated sulfuric acid one density is 1.84g/ml, and sulfuric acid concentration is the 95-98 percentage by weight;
CNT (carbon nano-tube) A-multiple-wall carbon nanotube, its external diameter are 1O to 40 nanometer, and length is 5 to 20 microns;
CNT (carbon nano-tube) B-multiple-wall carbon nanotube, its external diameter are 5 to 40 nanometers, and length is for O.1 to 3 microns;
To 2 nanometers, length is for O.5 to 30 microns for O.7 for CNT (carbon nano-tube) C-Single Walled Carbon Nanotube, its external diameter;
Silicon-dioxide powdery-
200, available from Degussa company.
2. battery testing method,
Select for use the battery of the steam turbine car use of 12V4Ah to test, this battery testing method has following two kinds:
A, the test of high rate low-rate discharge:
The test of high rate low-rate discharge is a discharge test that mixes, in this high rate low-rate discharge test, do 7 times discharge test altogether, wherein, be high rate 10C heavy-current discharge test (40A) for the first time, be low rate 0.1 C low discharging current test (0.4A) to the 6th time for the second time with the 7th time discharge test.And charging each time all is after being charged to 10.5V with 0.1C (0.4A) earlier, to use 1C (4A) to be charged to 200% of battery capacity again.
After the test of high rate low-rate discharge, can obtain three test results:
(1) 10C heavy-current discharge amount (primary test result);
(2) 0.1C low discharging current amount;
(3) high rate discharge capacity loss late;
Wherein this high rate discharge capacity loss late is with after the first time, the high rate discharge capacity subtracted for the second time the high rate discharge capacity, with its result divided by the first time high rate discharge capacity can calculate.
High rate discharge capacity loss late is the mode in a kind of simulated battery life-span, when high rate discharge capacity loss late less than 50% the time, expression simulated battery life test have by, yet, the simulated battery life test has by representing that promptly the normal battery life test will pass through, thus high rate discharge capacity loss late be calculated as a kind of simulated battery life test of shortening the time.If when for the first time high rate is lower than 1 minute discharge time, represent that promptly this battery can't the high rate discharge.
B, shock-testing:
With high rate 10C40A heavy-current discharge and 1C4A large current charge is a circulation, and it is with the 0.1C0.4A low current charge that normal battery is used charging, with 40A discharge time be termination less than 1 minute, and its period of retest.Because of charging is that 1C charges normal 10 times of 0.1C,, represent that promptly this battery life is preferable, and when period reached a predetermined value, this battery can be as quick charging battery if measured period is many more.
3. electrolyte is made
Electrolyte adopts sulfuric acid solution in the lead-acid battery, is selecting sulfuric acid density 1.1g/ml to 1.6g/ml solution for use in the general electrolyte, and the percentage by weight that is scaled sulfuric acid is between 16 to 70 percentage by weights.Lead-acid battery can be divided into general non-colloid battery and colloid battery again, and colloid battery more can not ooze out sulfuric acid electrolyte, has the advantage of environmental protection.The difference of general non-colloid battery and colloid battery just is to contain in the electrolyte of colloid battery the above silicon dioxide of 3 percentage by weights of having an appointment, and the silicon dioxide of this concentration can form colloid battery in sulfuric acid solution, so be called colloid battery.Whether silicon dioxide can form colloid in sulfuric acid solution, except the percentage by weight of silicon dioxide, also depend on acid concentration and temperature in the sulfuric acid solution, and the kind and the characteristic of the silicon dioxide that uses.Electrolyte of the present invention is applicable to general non-colloid battery and colloid battery.
A. general non-colloidal electrolyte prescription is made and test
Use the concentrated sulfuric acid solution (wherein sulfuric acid concentration be 98 percentage by weights) of density as 1.84g/ml, add in the pure water of capacity, preparation becomes the sulfuric acid solution that density is 1.33g/ml (wherein sulfuric acid concentration is 43 percentage by weights), and this sulfuric acid solution i.e. 1 electrolyte as a comparative example.
Embodiment 1-26
Get the sulfuric acid solution that above-mentioned density is 1.33g/ml,, add CNT (carbon nano-tube) and silicon-dioxide powdery respectively, fully stirred 24 hours, mix, be mixed with the electrolyte of embodiment 1 to 26 through using mixer according to listed prescription in the table 1.Each electrolyte is added in the test battery, at this battery variety 12V4Ah that adopts the steam turbine car to use.Test result is showed in the table 1.
The performance of electrolyte in non-colloid battery of various CNT (carbon nano-tube) of table 1. and silica concentration
| Numbering | The CNT (carbon nano-tube) weight ratio | The CNT (carbon nano-tube) kind | The silica weight ratio | 0.4A discharge, hour | The 40A discharge, second | Shock-testing (period) | Agree life |
| Comparative example 1 | There is not CNT (carbon nano-tube) in the electrolyte | Do not have | Do not have | 10 | 150 | 30 | Qualified |
| Embodiment 1 | 0.0005％ | A | 1％ | 10 | 150 | 43 | Qualified |
| Embodiment 2 | 0.001％ | A | Do not have | 10.5 | 155 | 52 | Qualified |
| Embodiment 3 | 0.001％ | A | 1％ | 10.5 | 158 | 76 | Qualified |
| Embodiment 4 | 0.003％ | A | 1％ | 10.5 | 170 | 124 | Qualified |
| Embodiment 5 | 0.003％ | B | 1％ | 10.5 | 174 | 131 | Qualified |
| Embodiment 6 | 0.003％ | C | 1％ | 11 | 180 | 146 | Qualified |
| Embodiment 7 | 0.005％ | A | 1％ | 11.5 | 189 | >150 | Qualified |
| Embodiment 8 | 0.007％ | A | Do not have | 12 | 168 | 118 | Qualified |
| Embodiment 9 | 0.007％ | A | 0.1％ | 12 | 180 | 130 | Qualified |
| Embodiment 10 | 0.007％ | A | 0.5％ | 12 | 188 | 135 | Qualified |
| Embodiment 11 | 0.007％ | A | 1％ | 12.5 | 195 | 142 | Qualified |
| Embodiment 12 | 0.007％ | A | 3％ | 12.5 | 202 | >150 | Qualified |
| Embodiment 13 | 0.007％ | B | 1％ | 12.5 | 206 | >150 | Qualified |
| Embodiment 14 | 0.007％ | C | 1％ | 13.5 | 226 | >150 | Qualified |
| Embodiment 15 | 0.009％ | A | 1％ | 12 | 195 | >150 | Qualified |
| Embodiment 16 | 0.009％ | B | 1％ | 12 | 201 | >150 | Qualified |
| Embodiment 17 | 0.009％ | C | 1％ | 13 | 219 | >150 | Qualified |
| Embodiment 18 | 0.018％ | A | 1％ | 11.5 | 185 | >150 | Qualified |
| Embodiment 19 | 0.036％ | A | 1％ | 11 | 175 | >150 | Qualified |
| Embodiment 20 | 0.036％ | B | 1％ | 11 | 179 | >150 | Qualified |
| Embodiment 21 | 0.072％ | A | Do not have | 10.5 | 148 | 112 | Qualified |
| Embodiment 22 | 0.072％ | A | 1％ | 11 | 170 | 135 | Qualified |
| Embodiment 23 | 0.1％ | A | Do not have | 10 | 112 | 47 | Qualified |
| Embodiment 24 | 0.1％ | A | 1％ | 10.5 | 155 | 68 | Qualified |
| Embodiment 25 | 0.2％ | A | 1％ | 10 | 85 | -- | Defective * |
| Embodiment 26 | 0.5％ | A | 1％ | 9.5 | 25 | -- | Defective * |
*On both positive and negative polarity, all find to have tangible many walls of CNT (carbon nano-tube) depositional phenomenon CNT (carbon nano-tube) A-carbon pipe, external diameter 10 to 40 nanometers, length 5 to 20 many walls of micron/nano carbon pipe B-carbon pipes, external diameter 5 to 40 nanometers, length 0.1 to 3 micron/nano carbon pipe C-single-wall carbon tube, external diameter 0.7 to 2 nanometer, 0.5 to 30 micron of length
As can be known, CNT (carbon nano-tube) content between 0.1 percentage by weight (i.e. 1000 ppm), all has favorable effects at 0.001 percentage by weight (being 10ppm) in above-mentioned test.The proportion (being 30-720ppm) between 0.003% weight ratio to 0.072% weight ratio that CNT (carbon nano-tube) is preferable, the proportion of CNT (carbon nano-tube) the best is (being 50-180ppm) between 0.005% weight ratio to 0.018% weight ratio.Simultaneously, can find out by embodiment 8 to 12 and the result of embodiment 21 to 24, in the dilution via adding silicon dioxide, the usefulness that can promote nano carbon tube electrolyte.
Compared to the battery that adds comparative example 1 electrolyte, add the battery that the present invention contains the electrolyte of CNT (carbon nano-tube) and promote 35% (the 0.4A discharge rose to 13.5 hours by 10 hours) in that the 0.1C discharge capacity is the highest, the 10C discharge capacity promotes 51% (rising to 226 seconds in 150 seconds) approximately.And but the big width of cloth of the period that is obtained by shock-testing rises to more than 500%, and this contains the battery of nano carbon tube electrolyte as can be known, and its life-span will significantly prolong by general battery, and the aspect also has the advantage of using big electric current quick charge in addition.
In addition, in above-mentioned CNT (carbon nano-tube) content range, use different types of CNT (carbon nano-tube), all can obtain good effect.And with CNT (carbon nano-tube) C, i.e. the best results of Single Walled Carbon Nanotube.
By the test result of above battery as can be known, when the low concentration of CNT (carbon nano-tube) below 0.001 percentage by weight, can't fill part its effect of performance; And when CNT (carbon nano-tube) concentration when 0.1 percentage by weight is above, can begin assemble to form agglomerate because of too intensive through observing CNT (carbon nano-tube), these agglomerates can hinder moving of electrolyte intermediate ion on the contrary, thereby the effect of reduction battery.
Embodiment 27-50 preparation contains the electrolyte concentrate of CNT (carbon nano-tube)
Because the dispersing and mixing of CNT (carbon nano-tube) need the long period mix, in the consideration of practical application, can adopt the higher concentration preparation to contain the electrolyte concentrate of CNT (carbon nano-tube) earlier, CNT (carbon nano-tube) and sulfuric acid are hybridly prepared into the concentrate that fine dispersion suspends, dilution and adding silicon dioxide make and reach effective low concentration nano carbon tube electrolyte use again, so can bring into play to save mixing the time, and reduce the economic interests that volume is transported in the nano carbon tube electrolyte storage.
Get the sulfuric acid solution that above-mentioned density is 1.33g/ml, the CNT (carbon nano-tube) that adds 5 percentage by weights and 15 percentage by weights respectively, this percentage by weight is to be 100% to calculate with sulfuric acid solution weight, respectively through using mixer fully to stir 24 hours, mix, be mixed with the concentrate a (CNT (carbon nano-tube) accounts for 5 percentage by weights) and concentrate b (CNT (carbon nano-tube) accounts for 15 percentage by weights) that contain CNT (carbon nano-tube) and sulfuric acid solution respectively.
According to listed prescription in the table 2, the extremely predetermined CNT (carbon nano-tube) concentration of thin up in electrolyte concentrate a or concentrate b, and add an amount of silicon-dioxide powdery, and mixing a little, electrolyte promptly completes.Visually in the dilution need add sulfuric acid, regulating and making sulfuric acid solution density is 1.33g/ml.
Be mixed with embodiment 27 to 50 electrolyte according to said method.Each electrolyte is added in the test battery, at this battery variety 12V4Ah that adopts the steam turbine car to use.Test result is showed in the table 2.
The various CNT (carbon nano-tube) concentrates of table 2. are through the performance of dilution as non-electrolyte of colloidal cell
| Numbering | The CNT (carbon nano-tube) weight ratio | The CNT (carbon nano-tube) kind | Adopt the concentrate kind | The silica weight ratio | 0.4A discharge, hour | The 40A discharge, second | Shock-testing (period) | Agree life |
| Comparative example 1 | There is not CNT (carbon nano-tube) in the electrolyte | Do not have | Do not have | Do not have | 10 | 150 | 30 | Qualified |
| Embodiment 27 | 0.001％ | A | a | Do not have | 10.5 | 160 | 72 | Qualified |
| Embodiment 28 | 0.001％ | A | a | 1％ | 10.5 | 158 | 66 | Qualified |
| Embodiment 29 | 0.003％ | A | a | 1％ | 10.5 | 177 | 120 | Qualified |
| Embodiment 30 | 0.005％ | A | a | 1％ | 11.5 | 185 | >150 | Qualified |
| Embodiment 31 | 0.007％ | A | a | Do not have | 12 | 174 | 122 | Qualified |
| Embodiment 32 | 0.007％ | A | a | 0.1％ | 12 | 182 | 130 | Qualified |
| Embodiment 33 | 0.007％ | A | a | 0.5％ | 12 | 190 | 136 | Qualified |
| Embodiment 34 | 0.007％ | A | a | 1％ | 12.5 | 196 | >150 | Qualified |
| Embodiment 35 | 0.007％ | A | a | 3％ | 12.5 | 200 | >150 | Qualified |
| Embodiment 36 | 0.007％ | A | b | 1％ | 12.5 | 202 | >150 | Qualified |
| Embodiment 37 | 0.007％ | B | a | 1％ | 12.5 | 208 | >150 | Qualified |
| Embodiment 38 | 0.007％ | C | a | 1％ | 13.5 | 230 | >150 | Qualified |
| Embodiment 39 | 0.009％ | A | a | 1％ | 12 | 192 | >150 | Qualified |
| Embodiment 40 | 0.009％ | A | b | 1％ | 12 | 190 | >150 | Qualified |
| Embodiment 41 | 0.009％ | B | a | 1％ | 12 | 200 | >150 | Qualified |
| Embodiment 42 | 0.009％ | C | b | 1％ | 13 | 222 | >150 | Qualified |
| Embodiment 43 | 0.01 8％ | A | a | 1％ | 11.5 | 183 | >150 | Qualified |
| Embodiment 44 | 0.036％ | A | a | 1％ | 11 | 178 | >150 | Qualified |
| Embodiment 45 | 0.036％ | A | b | 1％ | 11 | 175 | >150 | Qualified |
| Embodiment 46 | 0.072％ | A | a | Do not have | 11 | 160 | 112 | Qualified |
| Embodiment 47 | 0.072％ | A | a | 1％ | 11 | 178 | 138 | Qualified |
| Embodiment 48 | 0.1％ | A | a | Do not have | 10.5 | 146 | 58 | Qualified |
| Embodiment 49 | 0.1％ | A | a | 1％ | 10.5 | 154 | 64 | Qualified |
| Embodiment 50 | 0.5％ | A | a | 1％ | 9.0 | 20 | -- | Defective * |
*On both positive and negative polarity, all find to have tangible many walls of CNT (carbon nano-tube) depositional phenomenon CNT (carbon nano-tube) A-carbon pipe, external diameter 10 to 40 nanometers, length 5 to 20 many walls of micron/nano carbon pipe B-carbon pipes, external diameter 5 to 40 nanometers, length 0.1 to 3 micron/nano carbon pipe C-single-wall carbon tube, external diameter 0.7 to 2 nanometer, 0.5 to 30 micron of length
By the test result of above battery as can be known, when using the present invention to contain the electrolyte concentrate of CNT (carbon nano-tube), after simple dilution operation, CNT (carbon nano-tube) content between 0.1 percentage by weight (being 1000ppm), all has favorable effects at 0.001 percentage by weight (being 10ppm).The proportion (being 30-720ppm) between 0.003% weight ratio to 0.072% weight ratio that CNT (carbon nano-tube) is preferable, the proportion of CNT (carbon nano-tube) the best is (being 50-180ppm) between 0.005% weight ratio to 0.018% weight ratio.Simultaneously, can find out, via adding silicon dioxide, the usefulness that can promote nano carbon tube electrolyte by embodiment 31 to 35 and the result of embodiment 46 to 49.
Compared to the battery that adds comparative example 1 electrolyte, add the battery that the present invention contains the electrolyte of CNT (carbon nano-tube) and promote 35% (the 0.4A discharge rose to 13.5 hours by 10 hours) in that the 0.1C discharge capacity is the highest, the 10C discharge capacity promotes 53 (rising to 230 seconds in 150 seconds) approximately.And but the big width of cloth of the period that is obtained by shock-testing rises to more than 500%, and this contains the battery of nano carbon tube electrolyte as can be known, and its life-span will significantly prolong by general battery, and the aspect also has the advantage of using big electric current quick charge in addition.
In addition, in above-mentioned CNT (carbon nano-tube) content range, use different types of CNT (carbon nano-tube), all can obtain good effect.And with CNT (carbon nano-tube) C, i.e. the best results of Single Walled Carbon Nanotube.
By the test result of above battery as can be known, when the low concentration of the CNT (carbon nano-tube) after the dilution below 0.001 percentage by weight, can't fill part its effect of performance; And when CNT (carbon nano-tube) concentration when 0.1 percentage by weight is above, can begin assemble to form agglomerate because of too intensive through observing CNT (carbon nano-tube), these agglomerates can hinder moving of electrolyte intermediate ion on the contrary, thereby the effect of reduction battery.
B. the colloidal electrolyte prescription is made and test
Use the concentrated sulfuric acid solution (wherein sulfuric acid concentration be 98 percentage by weights) of density as 1.84g/ml, add in the pure water of capacity, preparation becomes the sulfuric acid solution that density is 1.33g/ml (wherein sulfuric acid concentration is 43 percentage by weights).
Get the sulfuric acid solution that above-mentioned density is 1.33g/ml, add in addition the silicon dioxide with 6 percentage by weights, this percentage by weight is to be 100% to calculate with sulfuric acid solution weight, through fully stirring, mix, leave standstill and make this electrolyte formation gel, promptly be mixed with the colloidal electrolyte that contains comparative example 2.
Embodiment 51-74
Get the sulfuric acid solution that above-mentioned density is 1.33g/ml, according to listed prescription in the table 3, add CNT (carbon nano-tube), through using mixer fully to stir 24 hours, back interpolation silicon dioxide make and reach required silica concentration, mix, leave standstill and make this electrolyte formation gel, i.e. the colloidal electrolyte of embodiment 51 to 74 is finished in preparation.Each electrolyte is added in the test battery, at this battery variety 12V4Ah that adopts the steam turbine car to use.Test result is showed in the table 3.
The performance of electrolyte in colloid battery of various CNT (carbon nano-tube) of table 3. and silica concentration
| Numbering | The CNT (carbon nano-tube) weight ratio | The CNT (carbon nano-tube) kind | The silica weight ratio | 0.4A discharge, hour | The 40A discharge, second | Shock-testing (period) | Agree life |
| Comparative example 1 | There is not CNT (carbon nano-tube) in the electrolyte | Do not have | Do not have | 10 | 150 | 30 | Qualified |
| Comparative example 2 | There is not CNT (carbon nano-tube) in the colloidal electrolyte | Do not have | 6％ | 11 | __ * | __ * | __ * |
| Embodiment 51 | 0.0005％ | A | 6％ | 11 | 82 | 12 | Defective |
| Embodiment 52 | 0.001％ | A | 6％ | 11 | 136 | 55 | Qualified |
| Embodiment 53 | 0.002％ | A | 6％ | 11.5 | 158 | 110 | Qualified |
| Embodiment 54 | 0.005％ | A | 6％ | 11.5 | 179 | >150 | Qualified |
| Embodiment 55 | 0.005％ | B | 6％ | 11.5 | 182 | >150 | Qualified |
| Embodiment 56 | 0.005％ | C | 6％ | 12.5 | 191 | >150 | Qualified |
| Embodiment 57 | 0.007％ | A | 6％ | 12 | 193 | >150 | Qualified |
| Embodiment 58 | 0.007％ | A | 9％ | 12 | 186 | >150 | Qualified |
| Embodiment 59 | 0.007％ | A | 12％ | 12 | 174 | >150 | Qualified |
| Embodiment 60 | 0.007％ | B | 6％ | 12 | 197 | >150 | Qualified |
| Embodiment 61 | 0.007％ | C | 6％ | 13.5 | 218 | >150 | Qualified |
| Embodiment 62 | 0.009％ | A | 6％ | 12.5 | 197 | >150 | Qualified |
| Embodiment 63 | 0.009％ | B | 6％ | 12.5 | 199 | >150 | Qualified |
| Embodiment 64 | 0.009％ | C | 6％ | 14 | 232 | >150 | Qualified |
| Embodiment 65 | 0.018％ | A | 6％ | 12 | 182 | >150 | Qualified |
| Embodiment 66 | 0.036％ | A | 6％ | 11.5 | 174 | >150 | Qualified |
| Embodiment 67 | 0.036％ | B | 6％ | 11.5 | 177 | >150 | Qualified |
| Embodiment 68 | 0.72％ | A | 6％ | 11 | 170 | 124 | Qualified |
| Embodiment 69 | 0.72％ | A | 9％ | 11 | 166 | 116 | Qualified |
| Embodiment 70 | 0.72％ | A | 12％ | 11 | 154 | 108 | Qualified |
| Embodiment 71 | 0.1％ | A | 6％ | 11 | 156 | 65 | Qualified |
| Embodiment 72 | 0.2％ * | A | 6％ | 10.5 | 75 | 22 | Defective ** |
| Embodiment 73 | 0.5％ * | A | 6％ | 10 | 33 | -- | Defective ** |
| Embodiment 74 | 1％ * | A | 6％ | 10 | 12 | -- | Defective ** |
*The generally the highest 3-4C current discharge that only reaches of colloid battery does not still have 10C heavy-current discharge function at present.
*On both positive and negative polarity, all find to have tangible CNT (carbon nano-tube) depositional phenomenon
Many walls of CNT (carbon nano-tube) A-carbon pipe, external diameter 10 to 40 nanometers, 5 to 20 microns of length
Many walls of CNT (carbon nano-tube) B-carbon pipe, external diameter 5 to 40 nanometers, 0.1 to 3 micron of length
CNT (carbon nano-tube) C-single-wall carbon tube, external diameter 0.7 to 2 nanometer, 0.5 to 30 micron of length
As can be known, the electrolyte that the present invention contains CNT (carbon nano-tube) uses in the electrolyte of colloid battery, also can bring into play the effect that significantly promotes battery functi in above-mentioned test.Wherein, when CNT (carbon nano-tube) content at 0.001 percentage by weight (being 10ppm) between 0.1 percentage by weight (being 1000ppm), favorable effects is all arranged.The proportion (being 30-720ppm) between 0.003% weight ratio to 0.072% weight ratio that CNT (carbon nano-tube) is preferable, the proportion of CNT (carbon nano-tube) the best is (being 50-180ppm) between 0.005% weight ratio to 0.018% weight ratio.
Compared to the colloid battery that adds comparative example 2, add colloid battery that the present invention contains nano carbon tube electrolyte and promote 27% (the 0.4A discharge rose to 14 hours by 11 hours) in that the 0.1C discharge capacity is the highest.10C discharge capacity and shock-testing aspect be not because the present generally the highest 3-4C current discharge that only reaches of colloid battery still has 10C heavy-current discharge function, so can only compare with the non-colloid battery (comparative example 1) that uses general electrolyte.Experimental result shows, adds the colloid battery that the present invention contains the electrolyte of CNT (carbon nano-tube), can promote the 10C discharge capacity and reach 55% (rising to 232 seconds in 150 seconds), but the period of shock-testing greatly then the width of cloth rise to 500% more than (30 times rise to) more than 150 times.This contains the colloid battery of nano carbon tube electrolyte as can be known, and its life-span will significantly prolong by general battery, and the aspect also has the advantage of using big electric current quick charge in addition.
Simultaneously, in this CNT (carbon nano-tube) content range, use different types of CNT (carbon nano-tube), all can obtain good effect.And with CNT (carbon nano-tube) C, i.e. the best results of Single Walled Carbon Nanotube.
By the test result of above battery as can be known, when the low concentration of CNT (carbon nano-tube) below 0.001 percentage by weight, can't fill part its effect of performance; And when CNT (carbon nano-tube) concentration when 0.1 percentage by weight is above, can begin assemble to form agglomerate because of too intensive through observing CNT (carbon nano-tube), these agglomerates can hinder moving of electrolyte intermediate ion on the contrary, thereby the effect of reduction battery.
Embodiment 75-97 preparation contains the electrolyte concentrate of CNT (carbon nano-tube)
Get aforesaid concentrate a and the concentrate b that contains CNT (carbon nano-tube) and sulfuric acid solution.According to listed prescription in the table 4, thin up is to predetermined CNT (carbon nano-tube) concentration in electrolyte concentrate a or concentrate b, and add an amount of silicon-dioxide powdery, and look and to add sulfuric acid, it is 1.33g/ml that adjusting makes sulfuric acid solution density, mix making evenly a little, leave standstill and make this electrolyte formation gel, i.e. electrolyte is finished in preparation.
Be mixed with the electrolyte of embodiment 75 to 97 according to said method.Each electrolyte is added in the test battery, at this battery variety 12V4Ah that adopts the steam turbine car to use.Test result is showed in the table 4.
The various CNT (carbon nano-tube) concentrates of table 4. are through the performance of dilution as electrolyte of colloidal cell
| Numbering | The CNT (carbon nano-tube) weight ratio | The CNT (carbon nano-tube) kind | Adopt the concentrate kind | The silica weight ratio | 0.4A discharge, hour | The 40A discharge, second | Shock-testing (period) | Agree life |
| Comparative example 1 | There is not CNT (carbon nano-tube) in the electrolyte | Do not have | Do not have | Do not have | 10 | 150 | 30 | Qualified |
| Comparative example 2 | In the colloidal electrolyte | Do not have | Do not have | 6％ | 11 | -- * | -- * | -- * |
| No CNT (carbon nano-tube) | ||||||||
| Embodiment 75 | 0.0005％ | A | a | 6％ | 11 | 86 | 14 | Defective |
| Embodiment 76 | 0.001％ | A | a | 6％ | 11 | 148 | 60 | Qualified |
| Embodiment 77 | 0.002％ | A | a | 6％ | 11.5 | 168 | 118 | Qualified |
| Embodiment 78 | 0.002％ | A | b | 6％ | 11.5 | 160 | 112 | Qualified |
| Embodiment 79 | 0.005％ | A | a | 6％ | 11.5 | 180 | >150 | Qualified |
| Embodiment 80 | 0.005％ | A | b | 6％ | 11.5 | 175 | >150 | Qualified |
| Embodiment 81 | 0.007％ | A | a | 6％ | 12 | 195 | >150 | Qualified |
| Embodiment 82 | 0.007％ | A | a | 9％ | 12 | 188 | >150 | Qualified |
| Embodiment 83 | 0.007％ | A | a | 12％ | 12 | 176 | >150 | Qualified |
| Embodiment 84 | 0.007％ | A | b | 6％ | 12 | 190 | >150 | Qualified |
| Embodiment 85 | 0.007％ | B | a | 6％ | 12.5 | 198 | >150 | Qualified |
| Embodiment 86 | 0.007％ | C | a | 6％ | 13.5 | 222 | >150 | Qualified |
| Embodiment 87 | 0.009％ | A | a | 6％ | 12.5 | 195 | >150 | Qualified |
| Embodiment 88 | 0.009％ | A | b | 6％ | 12.5 | 190 | >150 | Qualified |
| Embodiment 89 | 0.009％ | B | a | 6％ | 12.5 | 202 | >150 | Qualified |
| Embodiment 90 | 0.009％ | C | b | 6％ | 14 | 224 | >150 | Qualified |
| Embodiment 91 | 0.01 8％ | A | a | 6％ | 12 | 185 | >150 | Qualified |
| Embodiment 92 | 0.036％ | A | a | 6％ | 11.5 | 172 | >150 | Qualified |
| Embodiment 93 | 0.036％ | A | b | 6％ | 11.5 | 175 | >150 | Qualified |
| Embodiment 94 | 0.072％ | A | a | 6％ | 11 | 174 | >150 | Qualified |
| Embodiment 95 | 0.1％ | A | a | 6％ | 11 | 154 | 70 | Qualified |
| Embodiment 96 | 0.2％ | A | a | 6％ | 10.5 | 79 | 31 | Defective ** |
| Embodiment 97 | 0.5％ | A | b | 6％ | 10 | 32 | -- | Defective ** |
*The generally the highest 3-4C current discharge that only reaches of colloid battery does not still have 10C heavy-current discharge function at present.
*On both positive and negative polarity, all find to have tangible many walls of CNT (carbon nano-tube) depositional phenomenon CNT (carbon nano-tube) A-carbon pipe, external diameter 10 to 40 nanometers, length 5 to 20 many walls of micron/nano carbon pipe B-carbon pipes, external diameter 5 to 40 nanometers, length 0.1 to 3 micron/nano carbon pipe C-single-wall carbon tube, external diameter 0.7 to 2 nanometer, 0.5 to 30 micron of length
By the test result of above battery as can be known, when using the present invention to contain the electrolyte concentrate of CNT (carbon nano-tube), after simple dilution operation, CNT (carbon nano-tube) content between 0.1 percentage by weight (being 1000ppm), all has favorable effects at 0.001 percentage by weight (being 10ppm).The proportion (being 30-720ppm) between 0.003% weight ratio to 0.072% weight ratio that CNT (carbon nano-tube) is preferable, the proportion of CNT (carbon nano-tube) the best is (being 50-180ppm) between 0.005% weight ratio to 0.018% weight ratio.
Compared to the colloid battery that adds comparative example 2 electrolyte, add the colloid battery that the present invention contains the electrolyte concentrate of CNT (carbon nano-tube) and promote 27% (the 0.4A discharge rose to 14 hours by 11 hours) in that the 0.1C discharge capacity is the highest.10C discharge capacity and shock-testing aspect be not because the present generally the highest 3-4C current discharge that only reaches of colloid battery still has 10C heavy-current discharge function, so can only compare with the non-colloid battery (comparative example 1) that uses general electrolyte.Experimental result shows, adding the present invention contains the colloid battery of the electrolyte concentrate of CNT (carbon nano-tube), can promote the 10C discharge capacity and reach 49% (rising to 224 seconds in 150 seconds), but the period of shock-testing greatly then the width of cloth rise to 500% more than (30 times rise to) more than 150 times.This contains the colloid battery of nano carbon tube electrolyte as can be known, and its life-span will significantly prolong by general battery, and the aspect also has the advantage of using big electric current quick charge in addition.
In addition, in above-mentioned CNT (carbon nano-tube) content range, use different types of CNT (carbon nano-tube), all can obtain good effect.And with CNT (carbon nano-tube) C, i.e. the best results of Single Walled Carbon Nanotube.
By the test result of above battery as can be known, when the low concentration of the CNT (carbon nano-tube) behind the dilution back below 0.001 percentage by weight, can't fill part its effect of performance; And when CNT (carbon nano-tube) concentration when 0.1 percentage by weight is above, can begin assemble to form agglomerate because of too intensive through observing CNT (carbon nano-tube), these agglomerates can hinder moving of electrolyte intermediate ion on the contrary, thereby the effect of reduction battery.
By above-mentioned every embodiment of the invention as can be known, electrolyte of the present invention is applicable to general non-colloid lead-acid battery and colloid lead-acid battery, and significantly improves every effect.
By the above-mentioned embodiment of the invention as can be known, the value on the true tool industry of the present invention.
Above embodiment explanation only is preferred embodiment explanation of the present invention, and all those skilled in the art are when doing other all improvement and variation according to the above embodiment of the present invention explanation.Yet all improvement and variation that these are done according to the embodiment of the invention are in the claim that still belongs to invention spirit of the present invention and define.
Claims (14)
1. electrolyte that contains CNT (carbon nano-tube) includes:
One sulfuric acid solution, wherein sulfuric acid concentration is between 16 to 70 percentage by weights;
One CNT (carbon nano-tube), this CNT (carbon nano-tube) have a predetermined percentage by weight, and this predetermined percentage by weight is between 0.001 to 0.1 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight;
This CNT (carbon nano-tube) evenly is mixed in this sulfuric acid solution, and forms the electrolyte can be filled in the lead-acid battery as this lead-acid battery.
2. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 1, wherein, this CNT (carbon nano-tube) percentage by weight is between 0.003 to 0.072 weight ratio, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
3. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 1, wherein, this CNT (carbon nano-tube) percentage by weight is between 0.005 to 0.018 weight ratio, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
4. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 1, wherein, include silicon dioxide in this battery electrolyte as adding material, this silicon dioxide has a predetermined percentage by weight, and percentage by weight that should be predetermined is between 0.1 to 20 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
5. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 1, wherein, this CNT (carbon nano-tube) is selected from one of single-wall carbon tube, double-walled carbon pipe, many walls carbon pipe or its mixture.
6. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 5, wherein, this many walls carbon external diameter of pipe is 2 to 100 nanometers, length is 0.1 to 80 micron.
7. the electrolyte that contains CNT (carbon nano-tube) as claimed in claim 5, wherein, this single-wall carbon tube external diameter is 0.7 to 2 nanometer, length is 0.1 to 80 micron.
8. electrolysis additive that contains CNT (carbon nano-tube) includes:
One sulfuric acid solution;
One CNT (carbon nano-tube), this CNT (carbon nano-tube) have a predetermined percentage by weight, and this predetermined percentage by weight is between 0.1 to 30 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight;
This CNT (carbon nano-tube) evenly is mixed in this sulfuric acid solution, and form an electrolysis additive that contains CNT (carbon nano-tube) and sulfuric acid, this electrolysis additive can make wherein that CNT (carbon nano-tube) becomes electrolyte after reaching a predetermined concentration via dilution, and this electrolyte can be filled in the lead-acid battery electrolyte as this lead-acid battery.
9. the electrolysis additive that contains CNT (carbon nano-tube) as claimed in claim 8, wherein this electrolysis additive also includes the interpolation material that silicon dioxide suspends as aided nano carbon pipe, this silicon dioxide has a predetermined percentage by weight, percentage by weight that should be predetermined is between 0.1 to 40 percentage by weight, and this percentage by weight is to be 100% to calculate with sulfuric acid solution weight.
10. the electrolysis additive that contains CNT (carbon nano-tube) as claimed in claim 8, wherein, this CNT (carbon nano-tube) is selected from one of single-wall carbon tube, double-walled carbon pipe, many walls carbon pipe or its mixture.
11. the electrolysis additive that contains CNT (carbon nano-tube) as claimed in claim 10, wherein, this many walls carbon external diameter of pipe is 2 to 100 nanometers, and length is 0.1 to 80 micron.
12. the electrolysis additive that contains CNT (carbon nano-tube) as claimed in claim 10, wherein, this single-wall carbon tube external diameter is 0.7 to 2 nanometer, and length is 0.1 to 80 micron.
13. as claim 8,9,10, the 11 or 12 described electrolysis additives that contain CNT (carbon nano-tube), wherein this is diluted to the electrolyte that contains CNT (carbon nano-tube) of predetermined CNT (carbon nano-tube) concentration, comprises in the dilution that sulfuric acid content is between 16 to 70 percentage by weights in the electrolyte that adds after sulfuric acid makes this dilution; The percentage by weight of its CNT (carbon nano-tube) is between 0.001 to 0.1 percentage by weight, and this percentage by weight is to be 100% calculating with the total weight of diluting sulfuric acid and water in the sulfuric acid solution of back.
14. as claim 8,9,10, the 11 or 12 described electrolysis additives that contain CNT (carbon nano-tube), wherein this is diluted to the electrolyte that contains CNT (carbon nano-tube) of predetermined CNT (carbon nano-tube) concentration, comprise interpolation silicon dioxide in the dilution, make in the electrolyte after this dilution dioxide-containing silica between 0.1 to 20 percentage by weight, this percentage by weight is that the total weight of sulfuric acid and water is 100% calculating in the sulfuric acid solution of back to dilute.
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| CNA2006101117889A CN101136489A (en) | 2006-08-28 | 2006-08-28 | Electrolyte containing nano carbon tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198933A (en) * | 2012-07-05 | 2013-07-10 | 吴凯明 | Liquid flow type double electrode layer capacitor of electrolyte comprising conducting carbon particles |
| CN116754946A (en) * | 2023-08-21 | 2023-09-15 | 宁德时代新能源科技股份有限公司 | Battery stability evaluation method, device, equipment, storage medium and system |
-
2006
- 2006-08-28 CN CNA2006101117889A patent/CN101136489A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198933A (en) * | 2012-07-05 | 2013-07-10 | 吴凯明 | Liquid flow type double electrode layer capacitor of electrolyte comprising conducting carbon particles |
| CN116754946A (en) * | 2023-08-21 | 2023-09-15 | 宁德时代新能源科技股份有限公司 | Battery stability evaluation method, device, equipment, storage medium and system |
| CN116754946B (en) * | 2023-08-21 | 2024-04-02 | 宁德时代新能源科技股份有限公司 | Battery stability evaluation method, device, equipment, storage medium and system |
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