CN109713314A - Flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method - Google Patents
Flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method Download PDFInfo
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- CN109713314A CN109713314A CN201910001594.0A CN201910001594A CN109713314A CN 109713314 A CN109713314 A CN 109713314A CN 201910001594 A CN201910001594 A CN 201910001594A CN 109713314 A CN109713314 A CN 109713314A
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- carbon cloth
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Abstract
The present invention discloses a kind of preparation method of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode, including negative electrode material, using carbon cloth as base, its described negative electrode material growth in situ is in carbon cloth base, it first passes through hydro-thermal reaction and grows layer of titanium dioxide nano wire on carbon cloth, then a heavy silicon nanoparticle is sunk to the bottom on titanium dioxide nano thread surface by way of CVD, finally grows one layer of unformed SiO in carbon cloth surfaces2Layer, thus can effectively be sustained the volume expansion problem of silicon；The unformed SiO of outer layer2The micro hydrofluoric acid that the volume expansion of silicon can be sustained, and can prevent electrolyte decomposition from generating etches silicon layer, improves its cyclical stability；And method preparation process of the invention simply can be mass-produced operation.
Description
Technical field:
The present invention relates to lithium electricity new energy field, especially a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode
Preparation method.
Background technique:
Lithium ion battery is that versatility is most strong so far, the most wide secondary cell of adaptability, lithium ion battery have high voltage,
The advantages that having extended cycle life has been widely used for portable electronic device and large and medium-sized electrical equipment such as mobile phone, notebook electricity
The various aspects such as brain, digital camera, electronic product, electric tool, electric car.With the fast development of science and technology, as next
In generation, most has flexibility/foldable opto-electronic device research of one of prospect to attract attention.Current all electronic products will be towards light
It evolves in thin and flexible direction.But frivolous and flexible electronic product is used, just there must be corresponding high capacity foldable
Battery.Therefore, how to obtain flexible and high capacity lithium ion battery becomes a huge difficult problem.Develop lithium frivolous and flexible
Ion battery becomes one of the research important topic of current field of lithium ion battery.Flexible lithium ion battery is lithium ion battery neck
The emerging research direction in domain, therefore to realize flexible lithium ion battery, it is necessary to obtaining flexible bendable high-capacity electrode material is
It is crucial.But on the one hand consider existing commercialization lithium cell cathode material, theoretical capacity is 372 mA h g-1, exploitation
The lithium ion battery negative material of new high capacity has very important theoretical significance and practical application value.Another party
The existing negative electrode of lithium ion battery preparation process in face is that active material is coated on copper foil, does not have flexible bendable.
Therefore, how to develop a kind of lithium ion battery polarity material for having flexible bendable, be current lithium from
One realistic problem of sub- field of batteries has biggish realistic price and far-reaching economic value.
Summary of the invention:
Present invention aim to provide a kind of preparation side of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode
Method.
Including negative electrode material, using carbon cloth as base, using simple hydro-thermal method, the cladding of CVD deposition Si particle and later period,
It is synthetically prepared out a kind of flexibility TiO2/Si/SiO2Ion cathode material lithium.Traditional copper foil is replaced using carbon cloth, and by active material
Material carries out integrated design with collector, and such carbon cloth not only has excellent electric conductivity and bendable folding endurance, has biggish existing
Net price value and economic value.
A kind of preparation method of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode of the invention, including cathode
Material, using carbon cloth as base, it is raw on carbon cloth to first pass through hydro-thermal reaction in carbon cloth base for the negative electrode material growth in situ
Then long layer of titanium dioxide nano wire sinks to the bottom a heavy silicon nanoparticle on titanium dioxide nano thread surface by way of CVD,
Finally one layer of unformed SiO is grown in carbon cloth surfaces2Layer.
The preparation method of a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode comprising as follows
Specific steps are as follows:
(1) required carbon cloth is soaked in cleaning solution and is cleaned, remove the greasy dirt of carbon cloth surfaces, take out drying；
(2) the dry carbon cloth of (1) step is placed in titanium tetrachloride ethanol solution, is impregnated 20-28 hours；
(3) solution of tetrabutyl titanate processed, by a certain amount of concentrated hydrochloric acid and be mixed into salt in the deionized water of concentrated hydrochloric acid equal quantities
The butyl titanate for accounting for that hydrochloric acid solution volume ratio is 1-2.5% is added into hydrochloric acid solution, it is molten to be made as butyl titanate for acid solution
Liquid；
(4) carbon cloth by the preparation of (2) step immerses in the solution of tetrabutyl titanate of (3) step, is subsequently placed in the reaction of polytetrafluoroethylene (PTFE)
It in kettle, is reacted, is then rinsed with ethyl alcohol, it is dry, to soak butyl titanate carbon cloth；
(5) the leaching butyl titanate carbon cloth of (4) step is deposited into one layer of nano-silicon on titanium dioxide nano thread surface using CVD technique
The carbon cloth of particle；
(6) carbon cloth prepared by (5) step is placed in tetrabutyl silicate solution, concentrated ammonia liquor is added, in 60-80 DEG C of heating water bath 1-
3h takes out drying, as flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode.
Preferably, titanium tetrachloride ethanol solution described in step (2) is control titanium tetrachloride: ethyl alcohol mass ratio is 1:3-5.
Preferably, be its concentration of concentrated hydrochloric acid described in step (3) be 11-13mol/L.
It further, is CVD technique specific steps described in step (5) are as follows: by the leaching butyl titanate carbon cloth of step (4)
It is put into CVD furnace, is passed through air to oxygen content in nitrogen exclusion furnace and is lower than 450-550ppm, then with the heating of 4-6 DEG C/min
Rate is warming up to 750-850 DEG C, roasts 2-4 hours, is during which passed through silane gas and carries out chemical meteorology deposition 1.5-2.5 hours,
Flow is 4-6L/min, then calcining at constant temperature 1-3 hours, so that nano-silicon is deposited on titanium dioxide surface, while at high temperature, water
Thermally grown titanate is also translated into titanium dioxide.
It preferably, be tetrabutyl silicate solution described in step (6) is in mass ratio tetrabutyl silicate: water 1:4.
Preferably, be concentrated ammonia liquor concentration described in step (6) be 25-30Wt%.
Preferably, carbon cloth specification described in step (1) is the carbon cloth of 3-4 × 3-4 size；The cleaning solution is third
Ketone solution.
A kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method disclosed by the invention, the present invention
Using simple hydro-thermal method, the cladding of CVD deposition Si particle and later period, a kind of flexibility TiO of synthesis is prepared2/Si/SiO2Lithium from
Sub- negative electrode material.1) the invention, which has the advantage that, replaces traditional copper foil using carbon cloth, and by active material and collector into
Row integrated design, by the processing to carbon cloth, so that carbon cloth so not only has excellent electric conductivity and bendable folding endurance, but also
Active material and carbon cloth also have good contact force；2) traditional graphite material is replaced using Si, silicon has highest theory ratio
Capacity (4200 mAh/g) can prepare the rich high-capacity electrode of excess of export；3) it uses silicon as electrode material, there is a problem of maximum
It is it in charge and discharge process, along with huge volume change, cubical expansivity is up to 300%, and the dusting of silicon makes active material
Material peels off, and the capacity sharp fall for eventually leading to electrode is even entirely ineffective, and the titanium dioxide of the method for the present invention design is received
For rice stick growth in situ on carbon cloth, the variation of lithium ion deintercalation titanium dioxide volume is smaller, later by CVD method in titanium dioxide
One layer of Si nano particle is deposited in titanium nanometer rods, thus can effectively be sustained the volume expansion problem of silicon；4) outer layer is without fixed
Type SiO2The micro hydrofluoric acid that the volume expansion of silicon can be sustained, and can prevent electrolyte decomposition from generating etches silicon layer,
Improve its cyclical stability；And method preparation process of the invention simply can be mass-produced operation.
Detailed description of the invention:
Fig. 1 is grown on the carbon cloth for the flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method of the present invention
Titanium dioxide/silicon/silicon dioxide XRD diagram；
Fig. 2, for titanium dioxide/silicon/silicon dioxide scanning electron microscope (SEM) photograph to be grown on carbon cloth of the invention；
Fig. 3, for the titanium dioxide/silicon/silicon dioxide chemical property figure grown on carbon cloth of the invention.
Specific embodiment:
Below according to specific embodiments and drawings, the invention will be described in further detail.
A kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method of the invention, is the cathode
Material in situ is grown on carbon cloth base, is first passed through hydro-thermal reaction and is grown layer of titanium dioxide nano wire on carbon cloth, then leads to
The mode for crossing CVD sinks to the bottom a heavy nano silicon particles on titanium dioxide nano thread surface, and carbon cloth surfaces are finally grown one layer without fixed
Type SiO2Layer；
Specific steps are as follows:
(1) carbon cloth of 3 × 3cm is immersed in the acetone soln of carbon cloth cleaning solution, removes the greasy dirt of carbon cloth surfaces, taken out dry
It is dry；
(2) carbon cloth by the cleaned drying of (1) step is placed in titanium tetrachloride ethanol solution, is impregnated 24 hours.
(3) solution of tetrabutyl titanate processed is that 18.76mL concentrated hydrochloric acid is dissolved in 18.75mL deionized water, is eventually adding
0.56mL butyl titanate, that is, be prepared into solution of tetrabutyl titanate；
(4) carbon cloth by the preparation of (2) step immerses in the solution of tetrabutyl titanate of (3) step, then places it in 50mL polytetrafluoroethyl-ne
In the reaction kettle device of alkene, 6h is reacted at a temperature of being 150 DEG C in reaction temperature, is then rinsed several times, is done with the ethyl alcohol taken out
It is dry, butyl titanate carbon cloth must be soaked；
(5) carbon cloth of one layer of silicon nanoparticle is deposited on titanium dioxide nano thread surface using CVD technique；Step (4) are made
Standby leaching butyl titanate carbon cloth is placed in CVD furnace apparatus, is passed through air to oxygen content in nitrogen exclusion furnace and is lower than 500ppm, so
Afterwards with the heating rate of 5 DEG C/min, 800 DEG C are warming up to, is roasted 3 hours, silane gas is during which passed through and carries out chemical meteorology deposition 2
Hour, flow 5L/min, then calcining at constant temperature 2 hours, make nano-silicon be deposited on titanium dioxide surface, while at high temperature,
The titanate of water-bath growth is also translated into titanium dioxide, is prepared and deposits one layer of nano-silicon on titanium dioxide nano thread surface
The carbon cloth of grain；
(6) it prepared by (5) step and is placed in tetrabutyl silicate in the carbon cloth that titanium dioxide nano thread surface deposits one layer of silicon nanoparticle
In solution, 0.5mL concentrated ammonia liquor is added, 70 DEG C of water-bath 2h take out drying, that is, flexible titanium dioxide/silicon/silicon dioxide is prepared
Lithium ion cell electrode.
Titanium tetrachloride ethanol solution described in step (2) is titanium tetrachloride: ethyl alcohol 1:4.
Concentrated hydrochloric acid described in step (3) is that concentration is 12mol/L.
It is tetrabutyl silicate that tetrabutyl silicate solution described in step (6), which is tetrabutyl silicate solution: water 1:4.
Concentrated ammonia liquor mass concentration described in step (6) is 28%.
Embodiment 1
A kind of preparation method of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode of the embodiment of the present invention 1, tool
Body step are as follows:
(1) 3*3cm carbon cloth is immersed in acetone soln, removes the greasy dirt on surface, take out drying；
(2) carbon cloth is put into titanium tetrachloride ethanol solution, is impregnated 24 hours；
(3) concentrated hydrochloric acid is dissolved in deionized water, butyl titanate is added；
(4) carbon cloth is immersed in above-mentioned solution, is transferred in the reaction kettle of 50mL polytetrafluoroethylene (PTFE), 150 DEG C of 6h take out ethyl alcohol
It rinses several times, it is dry；
(5) one layer of silicon nanoparticle is deposited on titanium dioxide nano thread surface using CVD technique；
(6) carbon cloth is put into tetrabutyl silicate solution, concentrated ammonia liquor is added, 70 DEG C of water-bath 2h take out drying；
Lithium battery assembling: working the copper oxide of growth in situ on foam copper electrode, reference electrode and be metal to electrode
Lithium, electrolyte are 1M LiPF6EC+DMC+EMC (v/v of EC/DMC/EMC=1/1/1) solution.With CR2032 type button electricity
Pond is as test carrier.All assemblings carry out in the glove box with inert atmosphere protection.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (8)
1. the preparation method of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode, including negative electrode material, are with carbon cloth
Base, it is characterized in that the negative electrode material growth in situ in carbon cloth base, first passes through hydro-thermal reaction and grows one layer on carbon cloth
Then titanium dioxide nano thread sinks to the bottom a heavy silicon nanoparticle on titanium dioxide nano thread surface by way of CVD, finally in
Carbon cloth surfaces grow one layer of unformed SiO2Layer.
2. a kind of preparation side of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode according to claim 1
Method, spy are to comprise the following specific steps that are as follows:
Required carbon cloth is soaked in cleaning solution and is cleaned, the greasy dirt of carbon cloth surfaces is removed, takes out drying；
The dry carbon cloth of (1) step is placed in titanium tetrachloride ethanol solution, is impregnated 20-28 hours；
Solution of tetrabutyl titanate processed, by a certain amount of concentrated hydrochloric acid and with hydrochloric acid is mixed into the deionized water of concentrated hydrochloric acid equal quantities it is molten
The butyl titanate for accounting for that hydrochloric acid solution volume ratio is 1-2.5% is added into hydrochloric acid solution, is made as solution of tetrabutyl titanate for liquid；
The carbon cloth of (2) step preparation is immersed in the solution of tetrabutyl titanate of (3) step, the reaction kettle of polytetrafluoroethylene (PTFE) is subsequently placed in
In, it is reacted, is then rinsed with ethyl alcohol, it is dry, to soak butyl titanate carbon cloth；
The leaching butyl titanate carbon cloth of (4) step is deposited into one layer of nano-silicon on titanium dioxide nano thread surface using CVD technique
The carbon cloth of grain；
Carbon cloth prepared by (5) step is placed in tetrabutyl silicate solution, concentrated ammonia liquor is added and is taken in 60-80 DEG C of heating water bath 1-3h
It dries out, as flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode.
3. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that titanium tetrachloride ethanol solution described in step (2) is control titanium tetrachloride: ethyl alcohol mass ratio is 1:3-5.
4. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that its concentration of concentrated hydrochloric acid described in step (3) is 11-13mol/L.
5. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that CVD technique specific steps described in step (5) are as follows: the leaching butyl titanate carbon cloth of step (4) is put into CVD furnace
In, it is passed through air to oxygen content in nitrogen exclusion furnace and is lower than 450-550ppm, then with the heating rate of 4-6 DEG C/min, heating
It to 750-850 DEG C, roasts 2-4 hours, is during which passed through silane gas and carries out chemical meteorology deposition 1.5-2.5 hours, flow 4-
6L/min then calcining at constant temperature 1-3 hours, makes nano-silicon be deposited on titanium dioxide surface, while at high temperature, hydrothermal growth
Titanate is also translated into titanium dioxide.
6. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that tetrabutyl silicate solution described in step (6) is tetrabutyl silicate in mass ratio: water 1:4.
7. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that concentrated ammonia liquor concentration described in step (6) is 25-30Wt%.
8. a kind of flexible titanium dioxide/silicon/silicon dioxide lithium ion cell electrode preparation method according to claim 2,
It is characterized in that carbon cloth specification described in step (1) is the carbon cloth of 3-4 × 3-4 size；The cleaning solution is acetone soln.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430672A (en) * | 2020-04-03 | 2020-07-17 | 陕西科技大学 | Preparation method and application of silicon dioxide/carbon cloth self-supporting electrode material |
| CN112162439A (en) * | 2020-10-14 | 2021-01-01 | 中国科学技术大学 | Method for enhancing optical regulation and control capability of titanium dioxide electrode |
| CN115101719A (en) * | 2022-05-27 | 2022-09-23 | 长虹三杰新能源有限公司 | Preparation method and application of flexible electrode material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140092483A (en) * | 2012-12-28 | 2014-07-24 | 재단법인 포항산업과학연구원 | Conversion method of crystal shape to control titanium dioxide |
| CN104240967A (en) * | 2014-09-26 | 2014-12-24 | 东南大学 | Polyaniline-manganese dioxide-titanium nitride nanowire array composite material and preparation method and application thereof |
| CN104616910A (en) * | 2015-01-09 | 2015-05-13 | 东南大学 | Carbon-coating titanium based nano array material and preparation method and application thereof |
| CN107799723A (en) * | 2016-08-30 | 2018-03-13 | 华为技术有限公司 | A kind of silicon substrate composite negative plate and preparation method thereof and lithium rechargeable battery |
| WO2018226543A1 (en) * | 2017-06-06 | 2018-12-13 | University Of Connecticut | Microwave assisted and low-temperature fabrication of nanowire arrays on scalable 2d and 3d substrates |
-
2019
- 2019-01-02 CN CN201910001594.0A patent/CN109713314B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140092483A (en) * | 2012-12-28 | 2014-07-24 | 재단법인 포항산업과학연구원 | Conversion method of crystal shape to control titanium dioxide |
| CN104240967A (en) * | 2014-09-26 | 2014-12-24 | 东南大学 | Polyaniline-manganese dioxide-titanium nitride nanowire array composite material and preparation method and application thereof |
| CN104616910A (en) * | 2015-01-09 | 2015-05-13 | 东南大学 | Carbon-coating titanium based nano array material and preparation method and application thereof |
| CN107799723A (en) * | 2016-08-30 | 2018-03-13 | 华为技术有限公司 | A kind of silicon substrate composite negative plate and preparation method thereof and lithium rechargeable battery |
| WO2018226543A1 (en) * | 2017-06-06 | 2018-12-13 | University Of Connecticut | Microwave assisted and low-temperature fabrication of nanowire arrays on scalable 2d and 3d substrates |
Non-Patent Citations (1)
| Title |
|---|
| MAHMUT DIRICAN等: ""SiO2-confined silicon/carbon nanofiber composites as an anode for lithium-ion batteries"", 《RSC ADVANCES》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430672A (en) * | 2020-04-03 | 2020-07-17 | 陕西科技大学 | Preparation method and application of silicon dioxide/carbon cloth self-supporting electrode material |
| CN112162439A (en) * | 2020-10-14 | 2021-01-01 | 中国科学技术大学 | Method for enhancing optical regulation and control capability of titanium dioxide electrode |
| CN115101719A (en) * | 2022-05-27 | 2022-09-23 | 长虹三杰新能源有限公司 | Preparation method and application of flexible electrode material |
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