CN105186000A - Lithium-ion battery employing active carbon material as cathode and preparation method of active carbon material - Google Patents
Lithium-ion battery employing active carbon material as cathode and preparation method of active carbon material Download PDFInfo
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- CN105186000A CN105186000A CN201510506143.4A CN201510506143A CN105186000A CN 105186000 A CN105186000 A CN 105186000A CN 201510506143 A CN201510506143 A CN 201510506143A CN 105186000 A CN105186000 A CN 105186000A
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- Prior art keywords
- absorbent charcoal
- charcoal material
- active carbon
- lithium ion
- carbon material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention relates to a lithium-ion battery employing an active carbon material as a cathode and a preparation method of the active carbon material, and belongs to the technical field of chemical power sources. The lithium-ion battery employing the active carbon material as the cathode comprises a battery cathode, a battery anode and electrolyte. The lithium-ion battery is characterized in that the lithium-ion battery cathode is made of the active carbon material. The preparation method of the active carbon material for the lithium-ion battery cathode comprises the following steps: (1) thermal treatment of dilute nitric acid, with a solvent as a dilute nitric acid solution, adding the active carbon material to the dilute nitric acid solution for thermal treatment; (2) cooling and washing, namely cooling the active carbon material which is subjected to thermal treatment by the dilute nitric acid and washing the active carbon material with deionized water; and (3) drying, namely drying the washed active carbon material to obtain the active carbon material for the lithium-ion battery cathode. The active carbon material has the advantages of high lithium storage capability, good cycling stability, good rate capability and the like; and the rapid charge-discharge performance and relatively high specific energy density of the lithium-ion battery can be improved.
Description
Technical field
The invention belongs to technical field of chemical power, particularly relate to a kind of absorbent charcoal material lithium ion battery making positive pole and preparation method thereof.
Background technology
At present, along with the fast development in electric automobile field, have higher requirement to electrokinetic cell in market---fast charging and discharging and long flying power.Ultracapacitor possesses the ability of big current fast charging and discharging, but forms electric double layer energy storage owing to only just utilizing the ion in electrode material mesopore physical absorption electrolyte, there is the problem that energy density is low.And commercial Li-ion battery material there is high specific energy, but they are nearly all a kind of materials of Lithium-ion embeding formula, the formerly in the sky discharge and recharge that cannot realize big current, thus needing that exploitation is a kind of badly can the electrode material of fast charging and discharging.
Super capacitor active carbon is a kind of novel high adsorption active carbon, and be mainly used in ultracapacitor (also claiming double electric layer capacitor, electrochemical capacitor), have the specific area of super large, chemical property is good, capacity high.Active carbon is adopted to be that the ultracapacitor of electrode material is between battery and capacity plate antenna, there is the big current fast charging and discharging characteristic of electric capacity, also there is the energy storage characteristic of battery simultaneously, and it is long to reuse the life-span, utilize the electronics between mobile conductor (and not relying on chemical reaction) release current during electric discharge, thus provide power supply for equipment.The specific volume of active carbon is mainly from the contribution of micropore specific area, and mesopore is very little to the contribution of specific volume, and its effect mainly improves power characteristic.In order to obtain Fabrication of High Specific Capacitance and high power density, active carbon should have large aperture as much as possible micropore and appropriate small-bore mesopore.Due in super capacitor system, active carbon energy storage does not relate to chemical reaction, simple dependence physical absorption and the electric double layer energy storage formed, cause the energy density of ultracapacitor very low (<5wh/kg), the requirement of pure electric automobile to long flying power cannot be met completely.
Summary of the invention
The present invention provides a kind of absorbent charcoal material lithium ion battery making positive pole and preparation method thereof for solving in known technology the technical problem that exists.
The present invention be to provide a kind of can be used for lithium-ion battery system there is fast charging and discharging ability and the carbon electrode material compared with high-energy-density, this material with carbon element is a kind of activated carbon for super capacitors with high-specific surface area, for the active material of lithium-ion battery system positive pole after nitric acid treatment.
An object of the present invention is to provide one, and to possess storage lithium ability strong, component is simple and easy to get, activated carbon electrodes has extraordinary cyclical stability and high rate performance, and the absorbent charcoal material still showing the features such as extraordinary cyclical stability under the hot conditions of 50 DEG C makes the lithium ion battery of positive pole.
The technical scheme that the lithium ion battery that absorbent charcoal material of the present invention makes positive pole is taked is:
Absorbent charcoal material makes a lithium ion battery for positive pole, comprises anode, battery cathode and electrolyte, is characterized in: lithium ion cell positive is absorbent charcoal material.
The lithium ion battery that absorbent charcoal material of the present invention makes positive pole can also adopt following technical scheme:
Described absorbent charcoal material makes the lithium ion battery of positive pole, is characterized in: the absorbent charcoal material of lithium ion cell positive is activated carbon for super capacitors material.
Described absorbent charcoal material makes the lithium ion battery of positive pole, is characterized in: the absorbent charcoal material that the absorbent charcoal material of ion battery positive pole obtains through pernitric acid heat treatment.
It is simple, easy to operate that two of object of the present invention is to provide a kind of preparation technology, and product storage lithium ability is strong, the lithium ion cell positive absorbent charcoal material preparation method of the feature such as cyclical stability and good rate capability.
The technical scheme that the preparation method of lithium ion cell positive absorbent charcoal material of the present invention takes is:
A preparation method for lithium ion cell positive absorbent charcoal material, is characterized in: absorbent charcoal material preparation process comprises following processing step:
(1) dust technology heat treatment
Employing solvent is dilute nitric acid solution, is added in dilute nitric acid solution by absorbent charcoal material and heat-treats;
(2) cool, wash
By absorbent charcoal material heat treated for nitric acid, after cooling, with deionized water, absorbent charcoal material is washed;
(3) dry
Activity Carbon Materials after washing, through super-dry, obtains lithium ion cell positive absorbent charcoal material.
Absorbent charcoal material preparation method of the present invention can also adopt following technical scheme:
Described absorbent charcoal material preparation method, is characterized in: during dust technology heat treatment, and the weight percent concentration of dilute nitric acid solution is 5-20%, and absorbent charcoal material adds in dilute nitric acid solution process 1-30h under 80-100 DEG C of condition.
Described absorbent charcoal material preparation method, is characterized in: during dust technology heat treatment, and absorbent charcoal material adds in dilute nitric acid solution under 100 DEG C of conditions, carries out reflux heat process 1-5h.
Described absorbent charcoal material preparation method, is characterized in: the mass ratio of dilute nitric acid solution and active carbon material is 1-10:1.
Described absorbent charcoal material preparation method, is characterized in: when deionized water washs absorbent charcoal material, washs to weakly acidic pH, and pH is 6.5-7.
Described absorbent charcoal material preparation method, is characterized in: time dry, dry 1-10h under 80-150 condition.
The advantage that the present invention has and good effect are:
Absorbent charcoal material lithium ion battery making positive pole and preparation method thereof is owing to have employed the brand-new technical scheme of the present invention, and compared with prior art, the present invention has following characteristics:
1, the present invention is by the absorbent charcoal material of ultracapacitor after pernitric acid reflow treatment, and more functional group carries out storage lithium to have made it possess, and enhances absorbent charcoal material storage lithium ability;
2, the present invention adopts active carbon to be the active material of lithium ion cell electrode separately first, need not add any other transition metal oxide or traditional anode material for lithium-ion batteries;
3, the present invention adopts the absorbent charcoal material after process to be positive pole, and show through Electrochemical results, activated carbon electrodes has extraordinary cyclical stability and high rate performance, under the hot conditions of 50 DEG C, still show extraordinary cyclical stability.
Accompanying drawing explanation
Fig. 1 is active carbon is that the lithium ion battery of positive pole is at 300mAg
-1current density under the cycle performance figure of room temperature charge-discharge test;
Fig. 2 is the voltage capacity curve chart of the different cycles that Fig. 1 is corresponding;
Fig. 3 be active carbon positive pole lithium ion battery under the hot conditions of 50 DEG C with 300mAg
-1current density carry out charging and discharging capacity and the electric discharge specific energy figure of charge-discharge test;
Fig. 4 is the voltage capacity curve chart of the different cycles that Fig. 3 is corresponding;
Fig. 5 is active carbon positive pole lithium ion battery high rate performance figure (1C=200mAg at room temperature
-1).
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Accompanying drawings 1 to Fig. 5.
Embodiment 1
Absorbent charcoal material makes a lithium ion battery for positive pole, comprises anode, battery cathode and electrolyte, is characterized in: lithium ion cell positive is absorbent charcoal material.The absorbent charcoal material of lithium ion cell positive is activated carbon for super capacitors material, through the absorbent charcoal material that pernitric acid heat treatment obtains.
Embodiment 2
A preparation method for lithium ion cell positive absorbent charcoal material, preparation process comprises following processing step:
(1) dust technology heat treatment
Employing solvent is dilute nitric acid solution, is added in dilute nitric acid solution by absorbent charcoal material and heat-treats; The weight percent concentration of dilute nitric acid solution is 5-20%, and absorbent charcoal material adds in dilute nitric acid solution process 1-30h under 80-100 DEG C of condition.The mass ratio of dilute nitric acid solution and active carbon material is 3:1.
(2) cool, wash
By absorbent charcoal material heat treated for nitric acid, after cooling, with deionized water, absorbent charcoal material is washed; Washing is to weakly acidic pH, and pH is 6.9.
(3) dry
Absorbent charcoal material after washing, dry 1-10h under 80-150 DEG C of condition, obtains lithium ion cell positive absorbent charcoal material.
Embodiment 3
A kind of absorbent charcoal material lithium ion battery making positive pole and preparation method thereof, concrete preparation process comprises following processing step:
1, nitric acid treatment active carbon:
The solvent adopted is the dilute nitric acid solution of 10% content, is then added in solution by absorbent charcoal material and heat-treats.Concrete preparation process is as follows:
A) take business activated carbon for super capacitors material, and add the dust technology that solubility is 10%, 100 DEG C are heated reflow treatment 3 hours; The mass ratio of dilute nitric acid solution and active carbon material is 3:1.
B) cooled absorbent charcoal material is filtered, and repeatedly wash weakly acidic pH with deionized water;
C) material collection then will obtained, and dry process in the baking oven of 120 DEG C.
2, the preparation of electrode:
A) take the dusty material that part the 1st step obtains, and with conductive agent SuperP and binding agent PVDF (6%, 1-METHYLPYRROLIDONE is solvent) in mass ratio the ratio of 8:1:1 be mixed into uniform slurry;
B) slurry obtained is coated to above aluminium foil, then at air atmosphere 80 DEG C, does preliminary drying and processing, finally spend the night in the vacuum drying chamber of 100 DEG C.
3, the assembling of battery:
The electrode that 2 steps obtain to be cut into diameter be the electrode slice of 16mm is positive pole, and employing lithium metal is negative pole, 1MLiPF
6eC:DMC:DEC (1:1:1, v/v/v) is electrolyte, and barrier film is PP/PE/PPcelgard tri-layers of barrier film; Then be assembled into button cell to test.
It is strong that the present embodiment has described storage lithium ability, component is simple and easy to get, activated carbon electrodes has extraordinary cyclical stability and high rate performance, still extraordinary cyclical stability is shown under the hot conditions of 50 DEG C, preparation technology is simple, easy to operate, stable and reliable for performance good effect of Denging.
Claims (9)
1. absorbent charcoal material makes a lithium ion battery for positive pole, comprises anode, battery cathode and electrolyte, it is characterized in that: lithium ion cell positive is absorbent charcoal material.
2. absorbent charcoal material according to claim 1 makes the lithium ion battery of positive pole, it is characterized in that: the absorbent charcoal material of lithium ion cell positive is activated carbon for super capacitors material.
3. absorbent charcoal material according to claim 1 and 2 makes the lithium ion battery of positive pole, it is characterized in that: the absorbent charcoal material that the absorbent charcoal material of ion battery positive pole obtains through pernitric acid heat treatment.
4. a preparation method for lithium ion cell positive absorbent charcoal material, is characterized in that: absorbent charcoal material preparation process comprises following processing step:
(1) dust technology heat treatment
Employing solvent is dilute nitric acid solution, is added in dilute nitric acid solution by absorbent charcoal material and heat-treats;
(2) cool, wash
By absorbent charcoal material heat treated for nitric acid, after cooling, with deionized water, absorbent charcoal material is washed;
(3) dry
Activity Carbon Materials after washing, through super-dry, obtains lithium ion cell positive absorbent charcoal material.
5. the preparation method of lithium ion cell positive absorbent charcoal material according to claim 4, it is characterized in that: during dust technology heat treatment, the weight percent concentration of dilute nitric acid solution is 5-20%, and absorbent charcoal material adds in dilute nitric acid solution process 1-30h under 80-100 DEG C of condition.
6. the preparation method of lithium ion cell positive absorbent charcoal material according to claim 4, is characterized in that: during dust technology heat treatment, and absorbent charcoal material adds in dilute nitric acid solution under 100 DEG C of conditions, carries out reflux heat process 1-5h.
7. the preparation method of the lithium ion cell positive absorbent charcoal material according to claim 5 or 6, is characterized in that: the mass ratio of dilute nitric acid solution and active carbon material is 1-10:1.
8. the preparation method of lithium ion cell positive absorbent charcoal material according to claim 4, is characterized in that: when deionized water washs absorbent charcoal material, washs to weakly acidic pH, and pH is 6.5-7.
9. the preparation method of lithium ion cell positive absorbent charcoal material according to claim 4, is characterized in that: time dry, dry 1-10h under 80-150 DEG C of condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510506143.4A CN105186000A (en) | 2015-08-17 | 2015-08-17 | Lithium-ion battery employing active carbon material as cathode and preparation method of active carbon material |
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| CN201510506143.4A CN105186000A (en) | 2015-08-17 | 2015-08-17 | Lithium-ion battery employing active carbon material as cathode and preparation method of active carbon material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002424A (en) * | 2019-04-17 | 2019-07-12 | 安徽大学 | Nitrogen and oxygen codope porous carbon materials, preparation method and applications |
Citations (2)
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|---|---|---|---|---|
| CN1674347A (en) * | 2005-04-21 | 2005-09-28 | 复旦大学 | Mixed aquo-lithium ion battery |
| CN103531811A (en) * | 2012-07-03 | 2014-01-22 | 海洋王照明科技股份有限公司 | Lithium ion battery positive plate and preparation method thereof and method for preparing lithium ion battery |
-
2015
- 2015-08-17 CN CN201510506143.4A patent/CN105186000A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674347A (en) * | 2005-04-21 | 2005-09-28 | 复旦大学 | Mixed aquo-lithium ion battery |
| CN103531811A (en) * | 2012-07-03 | 2014-01-22 | 海洋王照明科技股份有限公司 | Lithium ion battery positive plate and preparation method thereof and method for preparing lithium ion battery |
Non-Patent Citations (1)
| Title |
|---|
| 周邵云，等: "硝酸氧化热处理对活性碳的影响", 《电池工业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002424A (en) * | 2019-04-17 | 2019-07-12 | 安徽大学 | Nitrogen and oxygen codope porous carbon materials, preparation method and applications |
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