CN107481863A - A kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method - Google Patents

A kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method Download PDF

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Publication number
CN107481863A
CN107481863A CN201710719582.2A CN201710719582A CN107481863A CN 107481863 A CN107481863 A CN 107481863A CN 201710719582 A CN201710719582 A CN 201710719582A CN 107481863 A CN107481863 A CN 107481863A
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capacitor
activated carbon
lithium
pending
ion capacitor
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CN107481863B (en
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云亮
彭小强
周旭峰
刘兆平
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/04—Hybrid capacitors
    • H01G11/06—Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
    • 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
    • Y02E60/13—Energy storage using capacitors

Abstract

The embodiment of the invention discloses a kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method, including step：The unclosed pending capacitor of liquid injection port is provided and activates pending capacitor；Discharge and recharge is carried out to pending capacitor and is circulated for several times；The pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.The present invention is pre-processed using above-mentioned steps to activated carbon lithium titanate lithium-ion capacitor, first activate, then the surface oxygen functional group of lithium-ion capacitor internal moisture and activated carbon is fully consumed the multiple cycle charge-discharge of activated carbon lithium titanate lithium-ion capacitor, finally the gas of generation is discharged, to prevent activated carbon lithium titanate lithium-ion capacitor flatulence phenomenon, ensure lithium-ion capacitor capacity, improve cyclical stability, and above-mentioned steps are simple to operate, cost is low, and practical application can be carried out in industrialization on a large scale.

Description

A kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method
Technical field
The application is related to capacitor manufacturing technology field, more particularly to a kind of chemical conversion of activated carbon lithium titanate lithium-ion capacitor Method.
Background technology
Activated carbon lithium titanate lithium-ion capacitor is because of the advantages that it has a safety feature, and circulating ratio performance is good, it has also become mesh The focus of preceding researcher's concern.And in some research work of reality, researcher has found that lithium titanate material is hygroscopic, certain Under the conditions of can produce gas with reaction of moisture and flatulence phenomenon occur so that the internal resistance of capacitor increases and then to influence its circulation steady Qualitative, simultaneously because activated carbon surface has many oxygen-containing functional groups, in high potential redox reaction, production occur for such functional group Angry body can also make flexible-packed battery flatulence phenomenon occur.
In the prior art, to solve the above problems, researcher uses mostly adds metal oxide in electrolyte solution Class gettering material is to improve the flatulence problem of activated carbon lithium titanate lithium-ion capacitor, but effect and unobvious, and cost It is high, while donor frenulum carrys out the problems such as energy force density is low and scattered uneven, the practical application being unfavorable in industrialization.
The content of the invention
The embodiments of the invention provide a kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method, for improving activated carbon The flatulence phenomenon of lithium titanate lithium-ion capacitor, at the same prevent can force density it is low and scattered uneven the problems such as.
A kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method, including：
The unclosed pending capacitor of liquid injection port is provided and activates the pending capacitor；
Discharge and recharge is carried out to the pending capacitor and circulated for several times；
The pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.
Preferably, it is described that the unclosed pending capacitor of liquid injection port is provided and wraps the pending capacitor activation Include：
The pending capacitor is provided, and is stood very first time t1；
First voltage U is charged to the pending capacitor1, then it is discharged to second voltage U2, cycle-index n1。
Preferably, to the pending capacitor with the first electric current I1Constant-current charge is to first voltage U1, in the described first electricity Press U1Lower second time of constant-voltage charge t2, then with the first electric current I1Constant-current discharge is to second voltage U2, cycle-index n1。
Preferably, the very first time t1For 2min-20h, second time t2For 3h-12h.
Preferably, it is described that the pending capacitor is carried out discharge and recharge and circulated to include for several times：
The pending capacitor after activation is stood into the 3rd time t3；
To the pending capacitor with the second electric current I2Charge to the first voltage U1, in the first voltage U1Under Charge the 4th time t4, is again with the second electric current I2It is discharged to the second voltage U2, cycle-index n2, second electric current I2More than the first electric current I1。
Preferably, the first electric current I1For 0.1A-3.3A, the second electric current I2For 0.5A-10A.
Preferably, the 3rd time t3For 1s-60s, the 4th time t4For 2h-8h.
Preferably, the cycle-index n1For 5-10, n2For 10-200.
Preferably, the pending capacitor of described pair of completion above-mentioned steps is carried out depressurizing pumping and entered at liquid injection port Row sealing treatment includes：
Burin-in process is carried out to the pending capacitor；
Decompression pumping simultaneously carries out sealing treatment at liquid injection port.
Preferably, the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method is carried out at room temperature, and the room temperature is 0 ℃-40℃。
As can be seen from the above technical solutions, activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method bag provided by the invention Include step：The unclosed pending capacitor of liquid injection port is provided and activates pending capacitor；Pending capacitor is carried out Discharge and recharge simultaneously circulates for several times；The pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealed at liquid injection port Processing.The present invention is pre-processed using above-mentioned steps to activated carbon lithium titanate lithium-ion capacitor, is first activated, then to activity The multiple cycle charge-discharge of charcoal lithium titanate lithium-ion capacitor make it that the surface of lithium-ion capacitor internal moisture and activated carbon is oxygen-containing Functional group fully consumes, and finally discharges the gas of generation, to prevent activated carbon lithium titanate lithium-ion capacitor flatulence phenomenon, protects Lithium-ion capacitor capacity is demonstrate,proved, improves cyclical stability, and above-mentioned steps are simple to operate, cost is low, can be in production on a large scale Practical application is carried out in industry.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method one embodiment is illustrated in the embodiment of the present invention Figure；
Fig. 2 is second embodiment signal of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method in the embodiment of the present invention Figure；
Fig. 3 is the 3rd embodiment signal of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method in the embodiment of the present invention Figure；
Fig. 4 is that activated carbon lithium titanate lithium-ion capacitor follows through existing chemical synthesizing method and after chemical synthesizing method of the present invention processing Ring 1000 encloses contrast schematic diagram；
Fig. 5 is activated carbon lithium titanate lithium-ion capacitor through existing chemical synthesizing method and after chemical synthesizing method of the present invention processing Cycle-index-capacity curve contrast schematic diagram.
Embodiment
The embodiments of the invention provide a kind of activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method, for improving activated carbon The flatulence phenomenon of lithium titanate lithium-ion capacitor, at the same prevent can force density it is low and scattered uneven the problems such as.
In order that those skilled in the art more fully understand application scheme, below in conjunction with the embodiment of the present invention Accompanying drawing, the embodiment of the present invention is described.
Term " first ", " second ", " the 3rd " in the description and claims of this application and above-mentioned accompanying drawing, " The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage The data that solution so uses can exchange in the appropriate case, so that the embodiments described herein can be with except illustrating herein Or the order beyond the content of description is implemented.In addition, term " comprising " or " having " and its any deformation, it is intended that covering is not Exclusive includes, for example, contain the process of series of steps or unit, method, system, product or equipment be not necessarily limited to it is clear Those steps or unit that ground is listed, but may include not list clearly or for these processes, method, product or set Standby intrinsic other steps or unit.
In existing technical scheme, use and metal oxide-type gettering material is added in electrolyte solution to improve activity The flatulence problem of charcoal lithium titanate lithium-ion capacitor, but effect and unobvious, and it is with high costs, while donor frenulum carrys out energy The problems such as force density is low and scattered uneven, the practical application being unfavorable in industrialization.
For ease of understanding, the idiographic flow of the embodiment of the present invention is described below, referring to Fig. 1, the present invention is implemented Activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method one embodiment includes in example：
The 101st, the unclosed pending capacitor of liquid injection port is provided and activate the pending capacitor.
Chemical conversion side of the invention is carried out to the capacitor before the liquid injection port closing of activated carbon lithium titanate lithium-ion capacitor Method, in order to discharge caused gas.At present, the method for activating capacitor is mainly (right relative to step 102) with low current The capacitor carries out discharge and recharge repeatedly, so as to avoid step 102 with caused during high current charge-discharge the damage of capacitor or The lost of life.
102nd, discharge and recharge is carried out to pending capacitor and is circulated for several times.
As described above, (charge and discharge repeatedly is carried out relative to step 101) with larger current to the pending capacitor after activation Electric treatment, multiple charge and discharge cycles can make the oxygen-containing functional group of the capacitor internal moisture and activated carbon surface fully disappear Consumption, avoid continuing to produce gas after the liquid injection port closing of activated carbon lithium titanate lithium-ion capacitor.
103rd, the pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.
After completing above-mentioned two step, decompression pumping is carried out to pending capacitor, the gas in electrolyte is fully released Put, reduce residual, then carry out sealing treatment again, chemical synthesizing method terminates.
In the embodiment of the present invention, there is provided the unclosed pending capacitor of liquid injection port simultaneously activates pending capacitor；It is right Pending capacitor carries out discharge and recharge and circulated for several times；To complete above-mentioned steps pending capacitor carry out depressurize pumping and Sealing treatment is carried out at liquid injection port.The present invention is pre-processed using above-mentioned steps to activated carbon lithium titanate lithium-ion capacitor, First activate, then the multiple cycle charge-discharge of activated carbon lithium titanate lithium-ion capacitor is caused lithium-ion capacitor internal moisture and The surface oxygen functional group of activated carbon fully consumes, and finally discharges the gas of generation, to prevent activated carbon metatitanic acid lithium ion Capacitor flatulence phenomenon, ensure lithium-ion capacitor capacity, improve cyclical stability, and above-mentioned steps are simple to operate, cost is low, Practical application can be carried out in industrialization on a large scale.
Referring to Fig. 2, activated carbon lithium titanate lithium-ion capacitor second embodiment bag of chemical synthesizing method of the embodiment of the present invention Include：
The 201st, the pending capacitor is provided, and stood very first time t1。
Chemical conversion side of the invention is carried out to the capacitor before the liquid injection port closing of activated carbon lithium titanate lithium-ion capacitor Method, in order to discharge caused gas.Before the activation that is powered, very first time t is now stood1, it is therefore intended that fill pole piece Divide Electolyte-absorptive, to prevent condenser capacity and high rate performance from declining.
In actual mechanical process, very first time t1Can be 2min-20h, it is preferable that very first time t1Preferably 1min- 30min, specifically, very first time t1Can be 3min, 5min or 20min.
202nd, first voltage U is charged to the pending capacitor1, then it is discharged to second voltage U2, cycle-index n1。
After liquid to be electrolysed fully infiltrates pole piece, charging activation is carried out to pending capacitor, first to pending electric capacity The first voltage U of device charging1, such as the rated voltage of pending capacitor, then it is discharged to second voltage U2, U1＞ U2, so far A charge and discharge process is completed, said process is then circulated into n1It is secondary.
Further, for ease of control, above-mentioned charge and discharge process uses constant-current constant-voltage charging, i.e., in the first stage with one Constant current charge, turn such as second stage when voltage reaches predetermined value and carry out constant-voltage charge, now electric current is gradually reduced, and works as electricity Stream reaches when dropping to zero, and capacitor is completely filled with, specifically, in embodiments of the present invention, to pending capacitor with first Electric current I1Constant-current charge is to first voltage U1, in first voltage U1Lower second time of constant-voltage charge t2, then with the first electric current I1Constant current It is discharged to second voltage U2, cycle-index n1。
Specifically, above-mentioned first voltage U1Preferably 2.5V-3.2V, second voltage U2Preferably 1V-1.4V.
Second time t2For capacitor in activation constant voltage charging time, can be pacified according to capacitor particular capacity Row, in embodiments of the present invention, is preferably controlled between 3h-12h, can be 6h or 8h specifically.
203rd, discharge and recharge is carried out to pending capacitor and is circulated for several times.
(I is more than with larger current to the pending capacitor after activation1) carry out repeated charge processing, multiple charge and discharge Electricity circulation can be such that the oxygen-containing functional group of the capacitor internal moisture and activated carbon surface fully consumes, and avoid in activated carbon metatitanic acid Continue to produce gas after the liquid injection port closing of lithium ion capacitor.
204th, the pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.
After completing above-mentioned steps, decompression pumping is carried out to pending capacitor, the gas in electrolyte is fully discharged, Residual is reduced, then carries out sealing treatment again, chemical synthesizing method terminates.
Referring to Fig. 3, activated carbon lithium titanate lithium-ion capacitor of the embodiment of the present invention the 3rd embodiment bag of chemical synthesizing method Include：
The 301st, the pending capacitor is provided, and stood very first time t1。
Chemical conversion side of the invention is carried out to the capacitor before the liquid injection port closing of activated carbon lithium titanate lithium-ion capacitor Method, in order to discharge caused gas.Before the activation that is powered, very first time t is now stood1, it is therefore intended that fill pole piece Divide Electolyte-absorptive, to prevent condenser capacity and high rate performance from declining.
302nd, first voltage U is charged to the pending capacitor1, then it is discharged to second voltage U2, cycle-index n1。
After liquid to be electrolysed fully infiltrates pole piece, charging activation is carried out to pending capacitor, first to pending electric capacity The first voltage U1 of device charging, such as the rated voltage of pending capacitor, second voltage U2, U1 ＞ U2 are then discharged to, extremely This completes a charge and discharge process, then circulates said process n1 times.
303rd, the pending capacitor after activation is stood into the 3rd time t3。
After the completion of activation, pending capacitor is first stood into the 3rd time t3, to stabilize it, the 3rd time t3Can root It is adjusted according to actual conditions, in embodiments of the present invention, the 3rd time t3Preferably 1s-60s.
304th, after above-mentioned capacitor is substantially stabilized, it is electrically operated to carry out cycle charge discharge to it, in embodiments of the present invention, with It is similar to activate step, using constant-current constant-voltage charging, to pending capacitor with the second electric current I2Charge to first voltage U1, In first voltage U1The 4th time t of lower charging4, then with the second electric current I2It is discharged to the second voltage U2, cycle-index n2, The second electric current I2More than the first electric current I1.Specifically, in embodiments of the present invention, by the first electric current I1Control exists Between 0.1A-3.3A, preferably 0.15A, by the second electric current I2Control is between 0.5A-10A, preferably 1A or 3A.
4th time t4It is capacitor in first voltage U1Under with the time of larger current constant-voltage charge, during relative to second Between t2, capacitor can be full of within the shorter time, therefore, in embodiments of the present invention, the 4th time t4It can be controlled in 2h- 8h。
Further optimize above-mentioned technical proposal, in above-mentioned steps, cycle-index n1For 5-10, n2For 10-200, can see Go out, it is necessary to circulate repeatedly to ensure gas as far as possible during step 304 carries out cycle charge-discharge to pending capacitor More discharges, in embodiments of the present invention, cycle-index n1More preferably 6 times, 8 times, cycle-index n2Preferably 50 times, 120 times.
305th, the pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.
After completing above-mentioned steps, decompression pumping is carried out to pending capacitor, the gas in electrolyte is fully discharged, Residual is reduced, then carries out sealing treatment again, chemical synthesizing method terminates.
More specifically, step 305 is specially：
Burin-in process is carried out to pending capacitor；
Decompression pumping simultaneously carries out sealing treatment at liquid injection port.
As can be seen here, in the third embodiment of the present invention, after completion charge and discharge is electrically operated, decompression pumping is not carried out immediately Operation, but burin-in process first is carried out to capacitor, stabilize it, then depressurize again and be evacuated and sealed at liquid injection port Mouth processing.The time of burin-in process is preferably 12h-72h.
The activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method that the several embodiments of the present invention are provided enters at room temperature OK, the room temperature refers to 0 DEG C -40 DEG C.
Contrast experiment is carried out below to further illustrate the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method of the application.
Experimental example
Using activated carbon as positive electrode, lithium titanate is negative material.
The system lithium-ion capacitor is melted at normal temperatures, 3min is stood, is then filled with 0.15A electric current constant current Electricity, then with 0.15A electric currents constant-current discharge to 1V, circulates 8 times to 2.75V, then constant-voltage charge 8h.Filled again with 3A electric current constant current Electricity constant-current discharge to 1V, circulates 120 times to 2.6V, depressurizes air extracting seal, activation finishes.
Reference examples
Using activated carbon as positive electrode, lithium titanate is negative material.
The system lithium-ion capacitor is stood 3min at normal temperatures, 2.75V is charged to 1A electric currents, then put with 1A electric currents Electricity circulates 8 times, air extracting seal activation finishes to 1V.
Lithium-ion capacitor after above-mentioned experimental example and reference examples chemical conversion is subjected to loop test (25A electric currents), referred to Fig. 4 and Fig. 5, Fig. 4 are activated carbon lithium titanate lithium-ion capacitor through existing chemical synthesizing method and after chemical synthesizing method of the present invention processing The circle contrast schematic diagram of circulation 1000, Fig. 5 are activated carbon lithium titanate lithium-ion capacitor through existing chemical synthesizing method and through the present inventionization Cycle-index-capacity curve contrast schematic diagram into after method processing, left side A capacitors are reference examples in Fig. 4, right side B electric capacity Device is experimental example, and in Fig. 5, C curve is experimental example, and D curves are reference examples, it can be seen that embodiment is without obvious flatulence Phenomenon occur, and circulate 3000 times after capacity with remaining basically stable before, conservation rate is more than 99%.Reference examples have after 500 times Flatulence phenomenon produces, and the capability retention after 3000 times is 30%.This shows to use chemical synthesis technology provided in an embodiment of the present invention Flatulence, the cycle performance of guaranteed capacity, greatly improvement lithium-ion capacitor can be reduced.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit Close or communicate to connect, can be electrical, mechanical or other forms.
Described above, above example is only to illustrate the technical scheme of the application, rather than its limitations；Although with reference to before Embodiment is stated the application is described in detail, it will be understood by those within the art that：It still can be to preceding State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application.

Claims (10)

  1. A kind of 1. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method, it is characterised in that including：
    The unclosed pending capacitor of liquid injection port is provided and activates the pending capacitor；
    Discharge and recharge is carried out to the pending capacitor and circulated for several times；
    The pending capacitor for completing above-mentioned steps is carried out depressurizing pumping and sealing treatment is carried out at liquid injection port.
  2. 2. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 1, it is characterised in that the offer The unclosed pending capacitor of liquid injection port simultaneously includes the pending capacitor activation：
    The pending capacitor is provided, and is stood very first time t1；
    First voltage U is charged to the pending capacitor1, then it is discharged to second voltage U2, cycle-index n1。
  3. 3. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 2, it is characterised in that treated to described Capacitor is handled with the first electric current I1Constant-current charge is to first voltage U1, in the first voltage U1The lower time of constant-voltage charge second t2, then with the first electric current I1Constant-current discharge is to second voltage U2, cycle-index n1。
  4. 4. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 3, it is characterised in that described first Time t1For 2min-20h, second time t2For 3h-12h.
  5. 5. the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 3 or 4, it is characterised in that described The pending capacitor is carried out discharge and recharge and circulated to include for several times：
    The pending capacitor after activation is stood into the 3rd time t3；
    To the pending capacitor with the second electric current I2Charge to the first voltage U1, in the first voltage U1Lower charging 4th time t4, is again with the second electric current I2It is discharged to the second voltage U2, cycle-index n2, the second electric current I2Greatly In the first electric current I1。
  6. 6. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 5, it is characterised in that described first Electric current I1For 0.1A-3.3A, the second electric current I2For 0.5A-10A.
  7. 7. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 5, it is characterised in that the described 3rd Time t3For 1s-60s, the 4th time t4For 2h-8h.
  8. 8. activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 5, it is characterised in that the circulation Frequency n1For 5-10, n2For 10-200.
  9. 9. the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 1-4 and 6-9 any one, it is special Sign is that the pending capacitor of described pair of completion above-mentioned steps carries out depressurizing pumping and sealing part is carried out at liquid injection port Reason includes：
    Burin-in process is carried out to the pending capacitor；
    Decompression pumping simultaneously carries out sealing treatment at liquid injection port.
  10. 10. the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method according to claim 1-4 and 6-9 any one, its It is characterised by, the activated carbon lithium titanate lithium-ion capacitor chemical synthesizing method is carried out at room temperature, and the room temperature is 0 DEG C -40 DEG C.
CN201710719582.2A 2017-08-21 2017-08-21 A kind of active carbon lithium titanate lithium-ion capacitor chemical synthesizing method Active CN107481863B (en)

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Publication number Priority date Publication date Assignee Title
CN113889344A (en) * 2020-07-02 2022-01-04 中车青岛四方车辆研究所有限公司 Formation method of lithium ion capacitor
CN113889344B (en) * 2020-07-02 2023-05-16 中车青岛四方车辆研究所有限公司 Lithium ion capacitor formation method

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