CN106601979A - Anode of secondary battery - Google Patents
Anode of secondary battery Download PDFInfo
- Publication number
- CN106601979A CN106601979A CN201611119277.1A CN201611119277A CN106601979A CN 106601979 A CN106601979 A CN 106601979A CN 201611119277 A CN201611119277 A CN 201611119277A CN 106601979 A CN106601979 A CN 106601979A
- Authority
- CN
- China
- Prior art keywords
- secondary battery
- active layer
- negative pole
- battery negative
- collector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- 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
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
Abstract
The invention discloses an anode of a secondary battery, and belongs to the field of batteries. The anode of the secondary battery disclosed by the invention comprises a current collector and an active layer coated on the surface of the current collector, the active layer is of a three-dimensional porous structure, and signal peptides are filled among holes of the active layer. The anode of the secondary battery disclosed by the invention has the characteristics that the specific capacity of the battery can be improved, and specifically high specific capacity still can be maintained under the condition of high current density, so that the charging rate of the battery and the cruising power of the battery are improved.
Description
Technical field
The present invention relates to a kind of electrode material, particularly a kind of secondary battery negative pole.
Background technology
With energy resource consumption, pollution problem is increasingly serious, and new-energy automobile is taken as unconventional vehicle fuel and makees
For power resources, have the advantages that little to ambient pressure.New-energy automobile includes pure electric automobile, stroke-increasing electric automobile, mixes
Power vehicle, FC-EV, hydrogen engine automobile, other new-energy automobiles etc. are closed, wherein, pure electric automobile is one
Kind using single accumulator as stored energy power source automobile, it by the use of accumulator as stored energy power source, by battery to electricity
Motivation provides electric energy, drive motor operating, so as to promote running car, and the relatively easy maturation of its technology, complete zero-emission
No pollution, is current study hotspot.But the energy of battery cell's weight storage is very little, also because electric motor car battery compared with
It is expensive, and economic scale is not formed, therefore purchasing price is more expensive；As for use cost, some result on trial are more expensive than automobile, some results
Only the 1/7 ~ 1/3 of automobile.
The content of the invention
The present invention goal of the invention be：For above-mentioned problem, there is provided one kind can improve battery specific capacity, especially
Which can keep height ratio capacity under high current densities, still, continuous so as to improve electric battery charging rate and battery
The secondary battery negative pole of boat ability.
The technical solution used in the present invention is as follows：
A kind of secondary battery negative pole of the present invention, including collector and the active layer for being overlying on collector surface, the active layer tool
There is three-dimensional cavernous structure, between the active layer hole, be filled with signal peptide.
As a result of above-mentioned technical proposal, by signal peptide can strengthening electric current transfer rate, the signal of telecommunication of signal peptide
Molecule has to the transmission of electric current and just responds, so as to improve the specific capacity of battery.
A kind of secondary battery negative pole of the present invention, the characteristic sequence of the signal peptide is：(1)
MFAKRFKTSLLAKFAGFLLPLFHLVAKRFGGPLLPLAEN (35)。
As a result of above-mentioned technical proposal, this feature sequence enables to signal peptide and improves electric current transfer rate, so as to
Improve the specific capacity of battery, it is to avoid negative pole produces memory effect, while condition of the negative material in high current density can be improved
Under, can still keep height ratio capacity.
A kind of secondary battery negative pole of the present invention, the collector are manganous oxide/graphene composite material.
As a result of above-mentioned technical proposal, the negative material has height ratio capacity, in 100mAg-1Under electric current density,
Its specific capacity reaches 870mAhg-1But, in 1600mAg-1Under electric current density, its specific capacity is only 390 mAhg-1。
A kind of secondary battery negative pole of the present invention, the active layer is by the three-dimensional ordered macroporous titanium dioxide with mesoporous wall
Cerium is made, and the active layer is bonding with collector by binding agent, and the aperture of the ceria is 50 ~ 200nm, pore wall thickness
For 15 ~ 40nm, mesoporous a diameter of 2 ~ 5nm.
As a result of above-mentioned technical proposal, active layer can increase the specific surface area of electrode, so as to increase the biography of electric current
Defeated efficiency.
A kind of secondary battery negative pole of the present invention, described adhesive are TPI, described adhesive and activity
The mass ratio of layer is 1：7.
As a result of above-mentioned technical proposal, collector has more than 80N/mm2Tensile strength.
A kind of secondary battery negative pole of the present invention, the signal peptide are filled in activity by electric sensitive aquagel as carrier
Layer Kong Jiezhong.
The present invention a kind of secondary battery negative pole, the electric sensitive aquagel be 2- acrylamide-2-methylpro panesulfonic acids/
Methacrylic acid N, N- dimethylaminoethyl hydrogel, the 2- acrylamide-2-methylpro panesulfonic acids and methacrylic acid N,
The mol ratio of N- dimethylaminoethyls is 15：1.
As a result of above-mentioned technical proposal, the hydrogel can improve the effect of gain to the current sense of signal peptide.
A kind of secondary battery negative pole of the present invention, the collector are 20 with the mass ratio of active layer：1.
By above-mentioned technical proposal is employed, in 100mAg-1Under electric current density, electrode specific capacity reaches 930mAhg-1,
It is in 1600mAg-1Under electric current density, its specific capacity being capable of 610 mAhg-1, compared with prior art with greatly carrying
It is high.
In sum, as a result of above-mentioned technical proposal, the invention has the beneficial effects as follows：
1st, battery specific capacity can be improved, especially under high current densities, height ratio capacity can be still kept, so as to carry
High electricity battery charging rate and battery durable ability.
2nd, in 100mAg-1Under electric current density, electrode specific capacity reaches 930mAhg-1, it is in 1600mAg-1Electric current
Under density, its specific capacity being capable of 610 mAhg-1, compared with prior art with greatly raising.
Specific embodiment
The present invention is described in detail below.
In order that the purpose of invention, technical scheme and advantage become more apparent, with reference to embodiments, the present invention is entered
Row is further described.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
1st, negative electrode current collector material and signal peptide are prepared respectively.
Current collector material is prepared by following steps, and step one prepares graphene oxide according to existing method standby；Step
Two, at room temperature by MnO2In adding appropriate distilled water, through supersound process 1h, the hot hydrogen that appropriate concentration is 2mol/L is added
Sodium hydroxide solution regulation system pH is 12, and suspension is collected by centrifugation precipitate after reacting by heating 24h, Mn is obtained3O4；Step 3,
By graphene oxide and obtained Mn3O4According to mol ratio 1：1 uniform mixing, in the argon gas atmosphere containing 10% hydrogen, and presses
It is warming up to after 500 DEG C of knots burn 4h and takes off fire and obtain manganous oxide/graphene composite material according to the heating rate of 5 DEG C/min.Signal peptide
Characteristic sequence be：(1)MFAKRFKTSLLAKFAGFLLPLFHLVAKRFGGPLLPLAEN (35).
2nd, signal peptide is prepared into activation layer material by hydrogel carrying.
Hydrogel carries the method for signal peptide by following steps, step one, by 2- acrylamide-2-methylpro panesulfonic acids
With methacrylic acid N, N- dimethylaminoethyls are according to mol ratio 15：1 adds dissolving in appropriate distilled water, then presses in system
According to methacrylic acid N, N- dimethylaminoethyls：Ammonium persulfate.：Sodium sulfite mol ratio 1：1：1 adds Ammonium persulfate. and sulfurous
Sour hydrogen sodium；Step 2, in mixed liquor injected plastic pipe and will be sealed with syringe after stirring, as 50 DEG C of water bath with thermostatic control
After 3h being reacted in pot, add signal peptide in plastic tube, then react 7h in 32 DEG C of thermostat water baths；Step 3, by hydrogel
Take out from plastic tube, soak 3d in deionized water, and change water daily and take out unreacted monomer and small molecule twice, obtain
To the hydrogel for carrying signal peptide.
Active layer is prepared by following steps, step one, according to the monodisperse PMMA that prior art synthetic aperture is 298nm
Glue crystalline substance microsphere；Step 2, by mol ratio 0.5：1：3 PMMA glue crystalline substance microsphere, citric acid and cerous nitrate are dissolved in appropriate ethanol water
In solution, wherein the content of ethanol is 40%, is stirred to dissolving；Step 3, solution is placed in porcelain boat, with 1 in air atmosphere
DEG C/speed of min rises to 300 DEG C of 3 h of holding from room temperature, then rise to 500 DEG C and roasting 5h at such a temperature, obtain with mesoporous
The three-dimensional ordered macroporous ceria of hole wall；Step 4, is rapidly cooled to 36 DEG C of hydrogel uniform applications that will carry signal peptide
In ceria surface, the appropriate acetonitrile of rapid Deca, and 30 ~ 40min, deionized water cleaning ceria are stood at 36 DEG C
Surface, obtains active layer.
3rd, active layer and current collector material are bondd after activation processing by current collector material surface by binding agent.
Current collection surface treating method is comprised the following steps, step one, and collector surface is cleaned 3 ~ 5 times with distilled water
Afterwards, it is dried under the conditions of 50 DEG C；Step 2, collector is infiltrated in the sodium dodecyl benzene sulfonate aqueous solution that mass fraction is 2%
In, after infiltration 24h, it is dried.
Collector is comprised the following steps with the bonding of active layer, step one, by TPI according to active layer
Mass ratio be 1：Active layer is overlying on TPI surface on treated collector surface by 7 uniform applications；Step
Rapid two, collector is connected with welding circuit, collector is bonded together with active layer by electric current welding, gage of wire
For 0.6, current range is 100A.
A kind of obtained secondary battery negative pole, including collector and the active layer for being overlying on collector surface, active layer have
Three-dimensional cavernous structure, is filled with signal peptide between active layer hole.Collector is manganous oxide/graphene composite material.Activity
Layer is made up of the three-dimensional ordered macroporous ceria with mesoporous wall, and the active layer is bonding with collector by binding agent,
The aperture of the ceria is 50 ~ 200nm, and pore wall thickness is 15 ~ 40nm, mesoporous a diameter of 2 ~ 5nm.Signal peptide is by electrically susceptible
Sense hydrogel is filled in Jie of active layer Kong as carrier.Electric sensitive aquagel be 2- acrylamide-2-methylpro panesulfonic acids/
Methacrylic acid N, N- dimethylaminoethyl hydrogel, the 2- acrylamide-2-methylpro panesulfonic acids and methacrylic acid N,
The mol ratio of N- dimethylaminoethyls is 15：1.Collector is 20 with the mass ratio of active layer：1.
In 100mAg-1Under electric current density, electrode specific capacity reaches 930mAhg-1, it is in 1600mAg-1Electric current is close
Under degree, its specific capacity being capable of 610 mAhg-1, compared with prior art with greatly raising.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Any modification, equivalent and improvement for being made within principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of secondary battery negative pole, it is characterised in that：Including collector and the active layer for being overlying on collector surface, the activity
Layer has three-dimensional cavernous structure, and signal peptide is filled between the active layer hole.
2. a kind of secondary battery negative pole as described in claim 1, it is characterised in that：The characteristic sequence of the signal peptide is：(1)
MFAKRFKTSLLAKFAGFLLPLFHLVAKRFGGPLLPLAEN (35)。
3. a kind of secondary battery negative pole as claimed in claim 2, it is characterised in that：The collector is manganous oxide/graphite
Alkene composite.
4. as claimed in claim 2 or claim 3 a kind of secondary battery negative pole, it is characterised in that：The active layer is by with mesoporous hole
The three-dimensional ordered macroporous ceria of wall is made, and the active layer is bonding with collector by binding agent, the ceria
Aperture is 50 ~ 200nm, and pore wall thickness is 15 ~ 40nm, mesoporous a diameter of 2 ~ 5nm.
5. a kind of secondary battery negative pole as claimed in claim 4, it is characterised in that：Described adhesive is that thermoplasticity polyamides is sub-
Amine, described adhesive are 1 with the mass ratio of active layer：7.
6. a kind of secondary battery negative pole as claimed in claim 5, it is characterised in that：The signal peptide is made by electric sensitive aquagel
For carrier, it is filled in Jie of active layer Kong.
7. a kind of secondary battery negative pole as claimed in claim 6, it is characterised in that：The electric sensitive aquagel is 2- acryloyls
Amido -2- methyl propane sulfonic acids/methacrylic acid N, N- dimethylaminoethyl hydrogels, the 2- acrylamidos -2- methyl-props
Sulfonic acid and methacrylic acid N, the mol ratio of N- dimethylaminoethyls is 15：1.
8. a kind of secondary battery negative pole as described in claim 5 or 6 or 7, it is characterised in that：The collector and active layer
Mass ratio is 20：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119277.1A CN106601979A (en) | 2016-12-08 | 2016-12-08 | Anode of secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119277.1A CN106601979A (en) | 2016-12-08 | 2016-12-08 | Anode of secondary battery |
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| Publication Number | Publication Date |
|---|---|
| CN106601979A true CN106601979A (en) | 2017-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611119277.1A Pending CN106601979A (en) | 2016-12-08 | 2016-12-08 | Anode of secondary battery |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035409A (en) * | 2011-10-09 | 2013-04-10 | 海洋王照明科技股份有限公司 | Graphene composite electrode and preparation method and application |
| WO2013094689A1 (en) * | 2011-12-21 | 2013-06-27 | 日産化学工業株式会社 | Aqueous lithium ion secondary battery |
| CN103579632A (en) * | 2012-07-24 | 2014-02-12 | 海洋王照明科技股份有限公司 | Graphene composite negative current collector, preparation method thereof and lithium ion battery |
| CN103988361A (en) * | 2011-10-14 | 2014-08-13 | 日产化学工业株式会社 | Metal-air cell provided with gel-form solid electrolyte |
| CN105355938A (en) * | 2015-11-05 | 2016-02-24 | 北京师范大学 | Method for modification of microbial fuel cell anode with peptide nanotube embedded riboflavin |
-
2016
- 2016-12-08 CN CN201611119277.1A patent/CN106601979A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035409A (en) * | 2011-10-09 | 2013-04-10 | 海洋王照明科技股份有限公司 | Graphene composite electrode and preparation method and application |
| CN103988361A (en) * | 2011-10-14 | 2014-08-13 | 日产化学工业株式会社 | Metal-air cell provided with gel-form solid electrolyte |
| WO2013094689A1 (en) * | 2011-12-21 | 2013-06-27 | 日産化学工業株式会社 | Aqueous lithium ion secondary battery |
| CN103579632A (en) * | 2012-07-24 | 2014-02-12 | 海洋王照明科技股份有限公司 | Graphene composite negative current collector, preparation method thereof and lithium ion battery |
| CN105355938A (en) * | 2015-11-05 | 2016-02-24 | 北京师范大学 | Method for modification of microbial fuel cell anode with peptide nanotube embedded riboflavin |
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Application publication date: 20170426 |