CN108520949A - A kind of graphene composite material and preparation method thereof - Google Patents
A kind of graphene composite material and preparation method thereof Download PDFInfo
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- CN108520949A CN108520949A CN201810325447.4A CN201810325447A CN108520949A CN 108520949 A CN108520949 A CN 108520949A CN 201810325447 A CN201810325447 A CN 201810325447A CN 108520949 A CN108520949 A CN 108520949A
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
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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
- 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
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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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
Abstract
The invention discloses a kind of graphene composite materials and preparation method thereof, include the raw material of following parts by weight：48 parts of 10 16 parts of graphene oxide, 35 parts of vanadic anhydride, 1.6 2.5 parts of potassium permanganate, 68 parts of tartaric acid, 2.5 4.5 parts of lithium carbonate, 3.6 5 parts of urea, 24 parts of glucose, 46 parts of vinylacetate, 59 parts of aluminium oxide and hyacinth.Raw material sources of the present invention are extensive, by using different preparation processes, the finished product prepared under the synergistic effect of various raw materials to have good specific capacity and cycle performance, can meet the use demand of lithium ion battery different raw materials.
Description
Technical field
The present invention relates to field of graphene, specifically a kind of graphene composite material.
Background technology
Graphene has just caused the very big concern of researcher since 2004 are found.Graphene is sp2 hydridization
Carbon atom it is tightly packed at single layer bi-dimensional cellular shape lattice structure carbonaceous material, be constitute other graphite materials substantially single
Member, pattern are analogous to the lamellar structure of thin paper, and thickness in monolayer is only 0.335nm, be at present find in the world it is most thin
Two-dimensional material.Graphene excellent combination property：Theoretical strength is 125GPa, 100 times stronger than steel；Its elasticity modulus can reach
1.0TPa can compare favourably with carbon nanotube；Its thermal conductivity is 5300W/ (mK), better than metal materials such as silver；Electron mobility
Up to 2 × 105cm2/ (Vs), electric conductivity is more than current any high temperature superconducting materia, but also has room-temperature quantum Hall effect
Etc. properties.Therefore graphene is often used as instead of other carbon Nano fillings (carbon black, carbon nanotube, carbon nano-fiber etc.) and preferably fills out
Expect to prepare highly conductive, tough polymer matrix composite, and in solar cell, ultracapacitor, sensor, biological material
Expect, be electromagnetically shielded contour performance, have wide foreground in high application of function.
But there are a large amount of defect, specific capacity and poor circulations on the grapheme material surface prepared at present, this is just limited
Its use in field of batteries is made.
Invention content
The purpose of the present invention is to provide a kind of graphene composite materials, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the present invention provides the following technical solutions：
A kind of graphene composite material includes the raw material of following parts by weight：10-16 parts of graphene oxide, vanadic anhydride
3-5 parts, 1.6-2.5 parts of potassium permanganate, 6-8 parts of tartaric acid, 2.5-4.5 parts of lithium carbonate, 3.6-5 parts of urea, 2-4 parts of glucose,
4-8 parts of 4-6 parts of vinylacetate, 5-9 parts of aluminium oxide and hyacinth.
As a further solution of the present invention：The graphene composite material includes the raw material of following parts by weight：Aoxidize stone
Black alkene 12-16 parts, 3.8-5 parts of vanadic anhydride, 2-2.5 parts of potassium permanganate, 6.6-8 parts of tartaric acid, 3.3-4.5 parts of lithium carbonate,
5.5-8 parts of 4.2-5 parts of urea, 2.5-4 parts of glucose, 4.9-6 parts of vinylacetate, 7-9 parts of aluminium oxide and hyacinth.
As a further solution of the present invention：The graphene composite material includes the raw material of following parts by weight：Aoxidize stone
14.5 parts of black alkene, 4.5 parts of vanadic anhydride, 2.3 parts of potassium permanganate, 7.5 parts of tartaric acid, 4 parts of lithium carbonate, 4.7 parts of urea, grape
7 parts of 3.6 parts of sugar, 5.5 parts of vinylacetate, 8.4 parts of aluminium oxide and hyacinth.
The preparation method of the graphene composite material, is as follows：
Hyacinth is crushed to 20-30 mesh by step 1, then in 30-45 degrees Celsius of 60-80 points of fermentation cylinder for fermentation
Clock obtains hyacinth zymotic fluid, and hyacinth zymotic fluid is equally divided into two parts；
Step 2 graphene oxide, potassium permanganate and tartaric acid is added in the ethanol water of 2-3 times of total weight, so
It is placed in 60-80 degrees Celsius of constant temperature oscillator and reacts 4-5 hours, the stainless steel that product is placed in polytetrafluoroethyllining lining is anti-
It answers in kettle, then a hyacinth zymotic fluid is added to reaction kettle and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is 145-165
Degree Celsius, the reaction time is 15-20 hours, obtains the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 45-60:Ball milling in 1 ball mill
To 100-120 mesh, the second mixture is obtained；
Lithium carbonate is crushed to after 50-60 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 30- by step 4
45 minutes, obtain lithium carbonate suspension；
First mixture, the second mixture, lithium carbonate suspension, urea and glucose are added in reaction kettle step 5
And it is reacted 30-50 minutes under 60-80 degrees Celsius, reaction product is dry under 70-80 degrees Celsius, obtain semi-finished product；
Semi-finished product are warming up to 550-600 degrees Celsius by step 6 with the speed of 8-12 degrees celsius/minutes under an inert atmosphere
And 90-130 minutes are kept the temperature, then 1680-1840 degrees Celsius is warming up to the speed of 16-22 degrees celsius/minutes and keeps the temperature
3-5 hours, room temperature was furnace-cooled to get to finished product.
As a further solution of the present invention：The power of ultrasonic disperse is 450-520W, power 30- in step 4
40KHz。
Compared with prior art, the beneficial effects of the invention are as follows：Raw material sources of the present invention are extensive, by by different raw materials
Using different preparation processes, the finished product prepared under the synergistic effect of various raw materials has good specific capacity and cycle performance,
The use demand of lithium ion battery can be met.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of graphene composite material includes the raw material of following parts by weight：10 parts of graphene oxide, 3 parts of vanadic anhydride,
1.6 parts of potassium permanganate, 6 parts of tartaric acid, 2.5 parts of lithium carbonate, 3.6 parts of urea, 2 parts of glucose, 4 parts of vinylacetate, aluminium oxide 5
4 parts of part and hyacinth.
The preparation method of the graphene composite material, is as follows：
Hyacinth is crushed to 20 mesh by step 1, then in the fermentation cylinder for fermentation of 36 degrees Celsius 70 minutes, obtains wind
Hyacinth zymotic fluid is equally divided into two parts by sub- zymotic fluid；
Step 2 graphene oxide, potassium permanganate and tartaric acid is added in the ethanol water of 2 times of total weight, then
It is placed in 60 degrees Celsius of constant temperature oscillator and reacts 4 hours, product is placed in the stainless steel cauldron of polytetrafluoroethyllining lining,
A hyacinth zymotic fluid is added to reaction kettle again and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is 155 degrees Celsius, reaction
Time is 18 hours, obtains the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 50:It is milled in 1 ball mill
100 mesh obtain the second mixture；
Lithium carbonate is crushed to after 60 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 36 divides by step 4
Clock obtains lithium carbonate suspension；
First mixture, the second mixture, lithium carbonate suspension, urea and glucose are added in reaction kettle step 5
And it is reacted 44 minutes under 75 degrees Celsius, reaction product is dry under 75 degrees Celsius, obtain semi-finished product；
Semi-finished product are warming up to 580 degrees Celsius with the speed of 8 degrees celsius/minutes under an inert atmosphere and protected by step 6
Then temperature 115 minutes is warming up to 1760 degrees Celsius with the speed of 18 degrees celsius/minutes and keeps the temperature 4 hours, is furnace-cooled to room temperature,
Obtain finished product.
Embodiment 2
A kind of graphene composite material includes the raw material of following parts by weight：12 parts of graphene oxide, vanadic anhydride 3.8
Part, 2 parts of potassium permanganate, 6.6 parts of tartaric acid, 3.3 parts of lithium carbonate, 4.2 parts of urea, 2.5 parts of glucose, 4.9 parts of vinylacetate,
5.5 parts of 7 parts of aluminium oxide and hyacinth.
The preparation method of the graphene composite material, is as follows：
Hyacinth is crushed to 30 mesh by step 1, then in 35 degrees Celsius of fermentation cylinder for fermentation 66 minutes, obtains wind
Hyacinth zymotic fluid is equally divided into two parts by sub- zymotic fluid；
Step 2 graphene oxide, potassium permanganate and tartaric acid is added in the ethanol water of 3 times of total weight, then
It is placed in 72 degrees Celsius of constant temperature oscillator and reacts 4 hours, product is placed in the stainless steel cauldron of polytetrafluoroethyllining lining,
A hyacinth zymotic fluid is added to reaction kettle again and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is 150 degrees Celsius, reaction
Time is 18 hours, obtains the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 56:It is milled in 1 ball mill
100 mesh obtain the second mixture；
Lithium carbonate is crushed to after 60 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 42 divides by step 4
The power of clock, ultrasonic disperse is 480W, and power 36KHz obtains lithium carbonate suspension；
First mixture, the second mixture, lithium carbonate suspension, urea and glucose are added in reaction kettle step 5
And it is reacted 45 minutes under 72 degrees Celsius, reaction product is dry under 78 degrees Celsius, obtain semi-finished product；
Semi-finished product are warming up to 570 degrees Celsius with the speed of 9 degrees celsius/minutes under an inert atmosphere and protected by step 6
Then temperature 120 minutes is warming up to 1820 degrees Celsius with the speed of 20 degrees celsius/minutes and keeps the temperature 4 hours, is furnace-cooled to room temperature,
Obtain finished product.
Embodiment 3
A kind of graphene composite material includes the raw material of following parts by weight：14.5 parts of graphene oxide, vanadic anhydride
4.5 parts, 2.3 parts of potassium permanganate, 7.5 parts of tartaric acid, 4 parts of lithium carbonate, 4.7 parts of urea, 3.6 parts of glucose, vinylacetate 5.5
7 parts of part, 8.4 parts of aluminium oxide and hyacinth.
The preparation method of the graphene composite material, is as follows：
Hyacinth is crushed to 25 mesh by step 1, then in 38 degrees Celsius of fermentation cylinder for fermentation 77 minutes, obtains wind
Hyacinth zymotic fluid is equally divided into two parts by sub- zymotic fluid；
Step 2 graphene oxide, potassium permanganate and tartaric acid is added in the ethanol water of 3 times of total weight, then
It is placed in 75 degrees Celsius of constant temperature oscillator and reacts 4 hours, product is placed in the stainless steel cauldron of polytetrafluoroethyllining lining,
A hyacinth zymotic fluid is added to reaction kettle again and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is 162 degrees Celsius, reaction
Time is 18 hours, obtains the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 54:It is milled in 1 ball mill
120 mesh obtain the second mixture；
Lithium carbonate is crushed to after 50 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 38 divides by step 4
Clock obtains lithium carbonate suspension；
First mixture, the second mixture, lithium carbonate suspension, urea and glucose are added in reaction kettle step 5
And it is reacted 44 minutes under 68 degrees Celsius, reaction product is dry under 75 degrees Celsius, obtain semi-finished product；
Semi-finished product are warming up to 580 degrees Celsius with the speed of 11 degrees celsius/minutes under an inert atmosphere and protected by step 6
Then temperature 130 minutes is warming up to 1730 degrees Celsius with the speed of 21 degrees celsius/minutes and keeps the temperature 4 hours, is furnace-cooled to room temperature,
Obtain finished product.
Embodiment 4
A kind of graphene composite material includes the raw material of following parts by weight：16 parts of graphene oxide, 5 parts of vanadic anhydride,
2.5 parts of potassium permanganate, 8 parts of tartaric acid, 4.5 parts of lithium carbonate, 5 parts of urea, 4 parts of glucose, 6 parts of vinylacetate, 9 parts of aluminium oxide
With 8 parts of hyacinth.
The preparation method of the graphene composite material, is as follows：
Hyacinth is crushed to 30 mesh by step 1, then in 42 degrees Celsius of fermentation cylinder for fermentation 75 minutes, obtains wind
Hyacinth zymotic fluid is equally divided into two parts by sub- zymotic fluid；
Step 2 graphene oxide, potassium permanganate and tartaric acid is added in the ethanol water of 2 times of total weight, then
It is placed in 75 degrees Celsius of constant temperature oscillator and reacts 4.5 hours, product is placed in the stainless steel cauldron of polytetrafluoroethyllining lining
In, then a hyacinth zymotic fluid is added to reaction kettle and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is 154 degrees Celsius,
Reaction time is 18 hours, obtains the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 60:It is milled in 1 ball mill
110 mesh obtain the second mixture；
Lithium carbonate is crushed to after 50 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 40 divides by step 4
The power of clock, ultrasonic disperse is 480W, and power 37KHz obtains lithium carbonate suspension；
First mixture, the second mixture, lithium carbonate suspension, urea and glucose are added in reaction kettle step 5
And it reacts 42 minutes at 80 degrees celsius, reaction product is dry under 74 degrees Celsius, obtain semi-finished product；
Semi-finished product are warming up to 570 degrees Celsius with the speed of 10 degrees celsius/minutes under an inert atmosphere and protected by step 6
Then temperature 120 minutes is warming up to 1800 degrees Celsius with the speed of 22 degrees celsius/minutes and keeps the temperature 4 hours, is furnace-cooled to room temperature,
Obtain finished product.
Comparative example 1
Except without containing hyacinth, remaining raw material and preparation method are same as Example 2.
Comparative example 2
Comparative example 2 is existing product.
The product of the product of embodiment 1-4 and comparative example 1-2 are prepared into test electricity according to lithium ion battery professional standard
Pond, carries out related chemical property and stability is tested, test result such as table 1.
Table 1
The product of embodiment 1-4 is superior to the production of comparative example 1-2 in specific capacity and cycle performance as can be seen from Table 1
Product.
This product ferments hyacinth, by graphene oxide under acid potassium permanganate reaction then again with wind
Sub- zymotic fluid carries out hydro-thermal reaction, is modified to graphene, lithium carbonate is modified in hyacinth zymotic fluid, finally will
Various raw materials are mixed and are sintered, and form conductive network, shorten the path that lithium ion is charged and discharged, and increase the speed of electronics conduction
Rate enhances the cyclical stability and electric conductivity of material.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
1. a kind of graphene composite material, which is characterized in that include the raw material of following parts by weight：10-16 parts of graphene oxide, five
3-5 parts of V 2 O, 1.6-2.5 parts of potassium permanganate, 6-8 parts of tartaric acid, 2.5-4.5 parts of lithium carbonate, 3.6-5 parts of urea, grape
4-8 parts of 2-4 parts sugared, 4-6 parts of vinylacetate, 5-9 parts of aluminium oxide and hyacinth.
2. graphene composite material according to claim 1, which is characterized in that include the raw material of following parts by weight：Oxidation
12-16 parts of graphene, 3.8-5 parts of vanadic anhydride, 2-2.5 parts of potassium permanganate, 6.6-8 parts of tartaric acid, lithium carbonate 3.3-4.5
Part, 4.2-5 parts of urea, 2.5-4 parts of glucose, 4.9-6 parts of vinylacetate, 7-9 parts of aluminium oxide and 5.5-8 parts of hyacinth.
3. graphene composite material according to claim 1, which is characterized in that include the raw material of following parts by weight：Oxidation
14.5 parts of graphene, 4.5 parts of vanadic anhydride, 2.3 parts of potassium permanganate, 7.5 parts of tartaric acid, 4 parts of lithium carbonate, 4.7 parts of urea, Portugal
7 parts of 3.6 parts of grape sugar, 5.5 parts of vinylacetate, 8.4 parts of aluminium oxide and hyacinth.
4. a kind of preparation method of graphene composite material as described in any one of claims 1-3, which is characterized in that specific steps
It is as follows：
Hyacinth is crushed to 20-30 mesh by step 1, then in 30-45 degrees Celsius of fermentation cylinder for fermentation 60-80 minutes, is obtained
To hyacinth zymotic fluid, hyacinth zymotic fluid is equally divided into two parts；
Graphene oxide, potassium permanganate and tartaric acid are added in the ethanol water of 2-3 times of total weight, then set by step 2
It is reacted 4-5 hours in 60-80 degrees Celsius of constant temperature oscillator, product is placed in the stainless steel cauldron of polytetrafluoroethyllining lining
In, then a hyacinth zymotic fluid is added to reaction kettle and carries out hydro-thermal reaction, the temperature of hydro-thermal reaction is that 145-165 is Celsius
Degree, reaction time are 15-20 hours, obtain the first mixture；
Step 3, by vanadic anhydride, vinylacetate and aluminium oxide ratio of grinding media to material be 45-60:It is milled in 1 ball mill
100-120 mesh obtains the second mixture；
Lithium carbonate is crushed to after 50-60 mesh and is added in another hyacinth zymotic fluid and ultrasonic disperse 30-45 points by step 4
Clock obtains lithium carbonate suspension；
Step 5, by the first mixture, the second mixture, lithium carbonate suspension, urea and glucose be added reaction kettle in and
It is reacted 30-50 minutes under 60-80 degrees Celsius, reaction product is dry under 70-80 degrees Celsius, obtain semi-finished product；
Step 6, by semi-finished product under an inert atmosphere with the speed of 8-12 degrees celsius/minutes be warming up to 550-600 degrees Celsius and
Then heat preservation 90-130 minutes is warming up to 1680-1840 degrees Celsius with the speed of 16-22 degrees celsius/minutes and to keep the temperature 3-5 small
When, room temperature is furnace-cooled to get to finished product.
5. the preparation method of graphene composite material according to claim 4, which is characterized in that ultrasonic in the step 4
The power of dispersion is 450-520W, power 30-40KHz.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102185143A (en) * | 2011-04-02 | 2011-09-14 | 浙江大学 | Transition metal oxide/ graphene composite material and preparation method thereof |
| CN103626151A (en) * | 2013-11-28 | 2014-03-12 | 复旦大学 | Preparation method of graphene/carbon composite material |
| CN105036123A (en) * | 2015-08-22 | 2015-11-11 | 苏州正业昌智能科技有限公司 | Preparation method of hemicellulose-based graphene |
| CN105977042A (en) * | 2016-04-07 | 2016-09-28 | 铜陵泰力电子有限公司 | Composite electrode material added with polypyrrole and manganous-mangnic oxide and preparation method thereof |
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2018
- 2018-04-12 CN CN201810325447.4A patent/CN108520949B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185143A (en) * | 2011-04-02 | 2011-09-14 | 浙江大学 | Transition metal oxide/ graphene composite material and preparation method thereof |
| CN103626151A (en) * | 2013-11-28 | 2014-03-12 | 复旦大学 | Preparation method of graphene/carbon composite material |
| CN105036123A (en) * | 2015-08-22 | 2015-11-11 | 苏州正业昌智能科技有限公司 | Preparation method of hemicellulose-based graphene |
| CN105977042A (en) * | 2016-04-07 | 2016-09-28 | 铜陵泰力电子有限公司 | Composite electrode material added with polypyrrole and manganous-mangnic oxide and preparation method thereof |
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Denomination of invention: A graphene composite material and its preparation method Effective date of registration: 20230329 Granted publication date: 20200922 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: Hebei Rundong polyphenyl inspection and Testing Co.,Ltd. Registration number: Y2023980036914 |