CN106450316A - Similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material and preparation method thereof - Google Patents
Similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material and preparation method thereof Download PDFInfo
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- CN106450316A CN106450316A CN201611073357.8A CN201611073357A CN106450316A CN 106450316 A CN106450316 A CN 106450316A CN 201611073357 A CN201611073357 A CN 201611073357A CN 106450316 A CN106450316 A CN 106450316A
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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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material and a preparation method thereof. The preparation method comprises the following steps: adding plant straws in an alcoholic solution and soaking for 12-48 hours at first, and separating and drying to obtain a preform; adding an activating agent in the preform, and then heating to the temperature of 400-900 DEG C and insulating for 2-5 hours under the protection of protective gas; and finally, treating the insulated product to obtain the similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material. The plant straws are soaked in the alcoholic solution, the soaked plant straws and the activating agent are insulated together to obtain the similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material, the prepared carbon material has a three-dimensional structure and has large specific surface area, a part, which is in contact with electrolyte, of the electrode material can be increased, electrons can be diffused and enter a carbon layer, performance of a lithium ion battery is improved effectively, and therefore, the similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material is a perfect ion battery anode material. The similar-honeycomb-shaped lithium/sodium battery anode carbon electrode material is simple in preparation process, high in repeatability, low in cost and environment-friendly.
Description
【Technical field】
The invention belongs to ion battery carbon negative pole material preparing technical field is and in particular to the cellular lithium of a species/sodium is electric
Pond negative pole carbon electrode material and preparation method thereof.
【Background technology】
Progress with the epoch and the development of society, energy crisis and environmental problem have become as in global range and urgently solve
Major issue certainly.In " 12 " planning that China formulates, by new forms of energy, new material, new-energy automobile industry is as me
The guiding industry of state's national economy, so exploitation and production being capable of fast charging and discharging and energy density high electric automobile gesture
Must go.Biological material with carbon element has huge specific surface area and flourishing pore structure, wherein various sizes of micropore and mesopore
The transmission to ion for the structure, solves high current charge-discharge and plays an important role.Biological material with carbon element has specific capacity height, good cycle
The features such as and be widely studied.Based on green economy, the Economic concept of energy-conserving and environment-protective.Biomass are (in agriculture and forestry production process
The lignocellulose such as straw, trees, agricultural wastes etc.) energy, as a kind of important Renewable resource, have relatively broad
Purposes and good using value.Prepare the good carbon electrode of chemical property with cheap biomass for raw material, reduce electricity
Pond cost, improves the performance of battery, has good application prospect, but current biomass are mostly direct burnings, cause
Environmental pollution.
【Content of the invention】
It is an object of the invention to overcoming problems of the prior art, the cellular lithium/sode cell of a species is provided to bear
Pole carbon electrode material and preparation method thereof, adopts renewable raw materials in the method, and prepared carbon electrode material is the cellular three-dimensional of class
Structure, increases the contact that electrode material is with electrolyte, is conducive to electrons spread to enter inside carbon-coating.
In order to achieve the above object, the inventive method adopts the following technical scheme that：
Comprise the following steps：
(1) straw is added to dipping 12～48h in alcoholic solution, separates and be dried to obtain precast body；
(2) add activator in precast body, then under the protection of protective gas, be warming up to 400～900 DEG C and be incubated
2～5h；
(3) product postprocessing after insulation is obtained the cellular lithium of class/sode cell negative pole carbon electrode material.
Further, in step (1), straw is then added in alcoholic solution through pretreatment；Pretreatment is by plant straw
Stalk is washed with deionized drying to constant weight, is then crushed to 0.5～1mm.
Further, in step (1), every 3g straw is immersed in the alcoholic solution of 50mL；Alcoholic solution is concentration is 0.5
The ethanol solution of～3mol/L.
Further, obtain precast body in 60 DEG C of drying 12～24h in step (1).
Further, in step (2), activator is KOH, NaOH, ZnCl2Or K2CO3.
Further, in step (2), activator and the mass ratio of precast body are (0.2～1)：1.
Further, in step (2), protective gas is one of nitrogen, argon, helium and neon or any two kinds
Above mixed gas；The flow velocity of protective gas is 20sccm～100sccm.
Further, the heating rate in step (2) is 1～10 DEG C/min.
Further, the post processing in step (3) is to wash the product after insulation successively with hydrochloric acid, deionized water and ethanol
Wash to neutrality, then be vacuum dried 12～24h at 60～120 DEG C.
The class honeycomb that a kind of preparation method using the cellular lithium of class as described above/sode cell negative pole carbon electrode material is obtained
Shape lithium/sode cell negative pole carbon electrode material.
Compared with prior art, the present invention has following beneficial technique effect：
With straw as raw material, by impregnating in alcoholic solution, and process is incubated together with activator the inventive method
Cellular lithium/sode cell negative pole the carbon electrode material of prepared class, the material with carbon element of preparation has a three dimensional structure, larger specific surface area,
The contact that electrode material is with electrolyte can be increased, be conducive to electrons spread to enter inside carbon-coating, be effectively improved lithium ion battery
Performance, be a kind of more satisfactory ion battery cathode material；Preparation process is simple of the present invention, repeatable high, low cost,
Environmental protection.The present invention utilizes rape stalk, corn straw, rice husk, Brassica campestris L shell, straw, the straw such as cotton stalk simultaneously
Biolobic material raw material replaces timber and plastics to prepare new carbon electrode material, can make full use of abandoned biomass resource, it is to avoid straight
Connect caused environmental pollution during burning, provide the approach of a reliable sustainable development for it, also for carbon electrode material
Preparation provides new path.
The carbon electrode material of the present invention has a three dimensional structure, larger specific surface area, the lithium ion of this electrode material assembling
Battery is in 100mA g-1Under electric current density, capacity maintains 500mAh g-1, it is a kind of more satisfactory ion battery negative pole material
Material.
【Brief description】
Fig. 1 is the SEM figure preparing material with carbon element in the embodiment of the present invention 1；
Fig. 2 is to prepare, in the embodiment of the present invention 1, the chemical property that carbon material negative pole prepares lithium ion battery.
【Specific embodiment】
Below in conjunction with the accompanying drawings the present invention is described in further details.
In the present invention, straw adopts rape stalk, corn straw, rice husk, Brassica campestris L shell, straw or cotton stalk；At it
Reason mode is identical, illustrates below taking Brassica campestris L shell as a example, the cellular lithium of the present invention one species/sode cell negative pole carbon electrode material
Preparation method, including following step：
First, the 3g Brassica campestris L shell dried to constant weight at 60 DEG C after washing is crushed to 0.5～1mm；It is immersed under room temperature
50mL concentration be 0.5～3mol/L ethanol solution in 12～48h, sucking filtration, then 60 DEG C of drying 12～24h obtain precast body,
Precast body is transferred under atmosphere furnace, adds activator in precast body in proportion, activator can be KOH, NaOH, ZnCl2,
K2CO3In any one, the mass ratio of alkali and precast body is (0.2～1)：1；The liter of 1～10 DEG C/min is pressed under atmosphere protection
To design temperature, such as 400～900 DEG C are incubated 2～5h to warm ramp；Wherein protective gas is nitrogen, argon, helium, neon
In any one or two or more mixed gas, gas flow rate is 20sccm～100sccm；It is 3mol/L in concentration again
Hydrochloric acid room temperature under magnetic agitation 6～12h washing, except deactivator；Last deionized water and ethanol wash 3 times successively, and 60
～120 DEG C of vacuum drying 12～24h obtain class cellular negative pole carbon electrode material.
Embodiment one：
First, 3g washing and drying is crushed to 0.5～1mm to constant weight Brassica campestris L shell；It is immersed in the ethanol solution of 2mol/L
24h, sucking filtration and then 60 DEG C are dried 12h and transfer under atmosphere furnace, by KOH:Precast body=0.2:1 ratio adds activator, in nitrogen
Gas atmosphere (50sccm) protects lower 5 DEG C/min to be warmed up to 800 DEG C of insulation 2h；Place in 3mol/L hydrochloric acid magnetic force at room temperature to stir
Mix 12h.Last deionized water and washing with alcohol 3 times, 60 DEG C of vacuum drying 12h obtain class cellular negative pole carbon electrode material.
From figure 1 it appears that prepared material with carbon element is class alveolate texture.
From figure 2 it can be seen that the lithium ion battery of this electrode material assembling is in 100mA g-1Under electric current density, capacity dimension
Hold in 500mAh g-1, show excellent chemical property.
Embodiment two：
First, 3g washing and drying is crushed to 0.5～1mm to constant weight Brassica campestris L shell；It is immersed in the ethanol solution of 0.5mol/L
Middle 48h, sucking filtration and then 60 DEG C are dried 24h and transfer under atmosphere furnace, by K2CO3:Precast body=0.5:1 ratio adds activator,
Lower 5 DEG C/min is protected to be warmed up to 900 DEG C of insulation 5h in argon gas atmosphere (100sccm)；Place in 3mol/L hydrochloric acid at room temperature
Magnetic agitation 6h.Last deionized water and washing with alcohol 3 times, 70 DEG C of vacuum drying 24h obtain class cellular negative pole carbon electrode
Material.
Embodiment three：
First, 3g washing and drying is crushed to 0.5～1mm to constant weight Brassica campestris L shell；It is immersed in the ethanol solution of 3mol/L
24h, sucking filtration and then 60 DEG C are dried 24h and transfer under atmosphere furnace, by NaOH:Precast body=0.5:1 ratio adds activator, in argon
Gas atmosphere (50sccm) protects lower 2 DEG C/min to be warmed up to 400 DEG C of insulation 5h；Place in 3mol/L hydrochloric acid magnetic force at room temperature to stir
Mix 12h.Last deionized water and washing with alcohol 3 times, 90 DEG C of vacuum drying 24h obtain class cellular negative pole carbon electrode material.
Example IV：
First, 3g washing and drying is crushed to 0.5～1mm to constant weight Brassica campestris L shell；It is immersed in the ethanol solution of 3mol/L
12h, sucking filtration and then 60 DEG C are dried 24h and transfer under atmosphere furnace, by ZnCl2:Precast body=1:1 ratio adds activator, in nitrogen
Gas and helium (1:1) atmosphere (20sccm) protects lower 10 DEG C/min to be warmed up to 900 DEG C of insulation 2h；Place in 3mol/L hydrochloric acid
Magnetic agitation 6h under room temperature.Last deionized water and washing with alcohol 3 times, 100 DEG C of vacuum drying 24h obtain the cellular negative pole of class
Carbon electrode material.
Embodiment five：
First, 3g washing and drying to constant weight Brassica campestris L shell is pulverized；It is immersed in 36h in the ethanol solution of 1mol/L, sucking filtration is right
60 DEG C are dried 18h and transfer under atmosphere furnace, by KOH afterwards:Precast body=0.5:1 ratio adds activator, in neon atmosphere
(50sccm) lower 5 DEG C/min is protected to be warmed up to 600 DEG C of insulation 4h；Place in 3mol/L hydrochloric acid magnetic agitation 12h at room temperature.
Last deionized water and washing with alcohol 3 times, 120 DEG C of vacuum drying 18h obtain class cellular negative pole carbon electrode material.
The present invention relates to the preparation method and application of carbon electrode material, it is embodied in the agricultural product oil relating to the use of fecund
The method that Rapeseed Shell prepares the cellular carbon electrode material of class.Present invention process is simple, and prepared material electrochemical performance is good, low
Cost, environmental protection, can be applicable to cell negative electrode material.The present invention is molten in alcohol as raw material using the shell of oil crops Semen Allii Tuberosi
Impregnate in liquid, then under atmosphere protection, add alkali carbonization preparation battery cathode class cellular carbon material, the carbon materials of the method preparation again
Material has a three dimensional structure, larger specific surface area, is a kind of more satisfactory ion battery cathode material, and preparation technology letter
Single it is easy to industrialization.
(1) present invention is that one kind turns waste into wealth, the method for environmental protection.Brassica campestris L shell as agricultural by-products wide material sources,
Cheap.
(2) the three dimensional structure material with carbon element structure of present invention preparation can increase the contact that electrode material is with electrolyte, has
Enter inside carbon-coating beneficial to electrons spread, be effectively improved the performance of lithium ion battery.
(3) preparation process is simple of the present invention, repeatable strong it is adaptable to large-scale production.
Claims (10)
1. the cellular lithium of a species/sode cell negative pole carbon electrode material preparation method it is characterised in that：Comprise the following steps：
(1) straw is added to dipping 12～48h in alcoholic solution, separates and be dried to obtain precast body；
(2) add activator in precast body, then under the protection of protective gas, be warming up to 400～900 DEG C and be incubated 2～
5h；
(3) product postprocessing after insulation is obtained the cellular lithium of class/sode cell negative pole carbon electrode material.
2. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：In step (1), straw is then added in alcoholic solution through pretreatment；Pretreatment is by straw deionized water
Washing and drying, to constant weight, is then crushed to 0.5～1mm.
3. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：In step (1), every 3g straw is immersed in the alcoholic solution of 50mL；Alcoholic solution is the second that concentration is 0.5～3mol/L
Alcoholic solution.
4. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：Precast body is obtained in 60 DEG C of drying 12～24h in step (1).
5. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：In step (2), activator is KOH, NaOH, ZnCl2Or K2CO3.
6. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：In step (2), activator and the mass ratio of precast body are (0.2～1)：1.
7. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：In step (2), protective gas is one of nitrogen, argon, helium and neon or arbitrarily two or more gaseous mixtures
Body；The flow velocity of protective gas is 20sccm～100sccm.
8. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：Heating rate in step (2) is 1～10 DEG C/min.
9. the preparation method of the cellular lithium/sode cell negative pole carbon electrode material of a species according to claim 1, its feature
It is：Post processing in step (3) is the product after insulation to be used hydrochloric acid, deionized water and washing with alcohol successively to neutrality, then
It is vacuum dried 12～24h at 60～120 DEG C.
10. the class that a kind of preparation method of the cellular lithium of class described in utilization claim 1/sode cell negative pole carbon electrode material is obtained
Cellular lithium/sode cell negative pole carbon electrode material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204430A (en) * | 2017-07-06 | 2017-09-26 | 新沂市中诺新材料科技有限公司 | A kind of method that utilization wheat stalk prepares sodium ion battery electrode material |
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| CN102569792A (en) * | 2011-11-07 | 2012-07-11 | 四川大学 | Preparation method for one-step synthesis of high-rate-performance carbon-coated lithium iron phosphate cathode material by in-situ hydrothermal carbonization |
| CN103086691A (en) * | 2013-02-26 | 2013-05-08 | 中国人民解放军国防科学技术大学 | Preparation method of fiber reinforced phosphate high-temperature-resistant composite material |
| CN105692617A (en) * | 2016-01-15 | 2016-06-22 | 陕西科技大学 | Method for preparing porous lithium ion battery carbon electrode material based on rape seed husks |
| CN105826538A (en) * | 2016-05-31 | 2016-08-03 | 陕西科技大学 | Preparation method of lithium ion battery anode material using biomass as carbon source and with C@Co3O4 core-shell structure |
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2016
- 2016-11-29 CN CN201611073357.8A patent/CN106450316A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569792A (en) * | 2011-11-07 | 2012-07-11 | 四川大学 | Preparation method for one-step synthesis of high-rate-performance carbon-coated lithium iron phosphate cathode material by in-situ hydrothermal carbonization |
| CN103086691A (en) * | 2013-02-26 | 2013-05-08 | 中国人民解放军国防科学技术大学 | Preparation method of fiber reinforced phosphate high-temperature-resistant composite material |
| CN105692617A (en) * | 2016-01-15 | 2016-06-22 | 陕西科技大学 | Method for preparing porous lithium ion battery carbon electrode material based on rape seed husks |
| CN105826538A (en) * | 2016-05-31 | 2016-08-03 | 陕西科技大学 | Preparation method of lithium ion battery anode material using biomass as carbon source and with C@Co3O4 core-shell structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204430A (en) * | 2017-07-06 | 2017-09-26 | 新沂市中诺新材料科技有限公司 | A kind of method that utilization wheat stalk prepares sodium ion battery electrode material |
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Application publication date: 20170222 |