CN107834109A - A kind of fire-retardant lithium battery electrolytes - Google Patents
A kind of fire-retardant lithium battery electrolytes Download PDFInfo
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- CN107834109A CN107834109A CN201711188603.9A CN201711188603A CN107834109A CN 107834109 A CN107834109 A CN 107834109A CN 201711188603 A CN201711188603 A CN 201711188603A CN 107834109 A CN107834109 A CN 107834109A
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- weight
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- lithium battery
- fire
- battery electrolytes
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003792 electrolyte Substances 0.000 title claims abstract description 27
- 239000003063 flame retardant Substances 0.000 title claims abstract description 23
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 48
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 12
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 12
- 239000011591 potassium Substances 0.000 claims abstract description 12
- 150000004040 pyrrolidinones Chemical class 0.000 claims abstract description 12
- JBLFIYDHGYMNEJ-UHFFFAOYSA-N (4-azaniumylphenyl)azanium;oxalate Chemical compound OC(=O)C(O)=O.NC1=CC=C(N)C=C1 JBLFIYDHGYMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- -1 sulfonyloxy methyl Chemical group 0.000 claims abstract description 11
- 150000002466 imines Chemical class 0.000 claims abstract description 10
- IZNOSZSAGUIKAJ-UHFFFAOYSA-N 3,4-dibromo-2-methylfuran Chemical compound CC=1OC=C(Br)C=1Br IZNOSZSAGUIKAJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 9
- 229910001386 lithium phosphate Inorganic materials 0.000 claims abstract description 9
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 9
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 9
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims abstract description 9
- ZDUOUNIIAGIPSD-UHFFFAOYSA-N 1,1,1-tribromoethane Chemical compound CC(Br)(Br)Br ZDUOUNIIAGIPSD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- CEFVCNWQCJCMHZ-UHFFFAOYSA-N 2-(bromomethyl)furan Chemical class BrCC1=CC=CO1 CEFVCNWQCJCMHZ-UHFFFAOYSA-N 0.000 description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical class N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 208000032953 Device battery issue Diseases 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RDHPKYGYEGBMSE-UHFFFAOYSA-N bromoethane Chemical compound CCBr RDHPKYGYEGBMSE-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of fire-retardant lithium battery electrolytes, by weight, including following components：The parts by weight of dimethyl sulfoxide (DMSO) 21 25, the parts by weight of tribromoethane 15, the parts by weight of dibromo methylfuran 25 31, the parts by weight of pyrrolidones 5 11, the parts by weight of sulfonyloxy methyl imines potassium 15 21, the parts by weight of lithium phosphate 15, the parts by weight of sodium carboxymethylcellulose 15, the parts by weight of poly-aspartate sodium salt 15, the parts by weight of p-phenylenediamine oxalate 15.The present invention provides a kind of fire-retardant lithium battery electrolytes, so that can reach its theoretical capacity using capacity more than the 80% of lithium battery.
Description
Technical field
The present invention relates to new energy field, specifically, is related to a kind of fire-retardant lithium battery electrolytes.
Background technology
In lithium ion battery, lithium metal and carbon material, the energy when lithium metal is as negative material can be used in negative material
Big capacity and high output voltage are enough provided.The electrolyte used at present is mainly made up of organic solvent and lithium salts, and this is electric
Solution liquid easily chemically reacts with lithium metal, causes the uneven passivation in lithium metal surface, so as to occur branch in charge and discharge process
Brilliant phenomenon, make battery failure, and organic solvent is inflammable and explosive potential safety hazard be present；And conventional service life of lithium battery is generally
500 charge and discharge cycles, excellent can reach 600 charge and discharge cycles.Important component of the electrolyte as lithium battery,
For lithium battery life-span have directly affect, traditional lithium battery electrolytes internal resistance is big, and stability is poor, temperature sensitive, especially
It is to be in hot environment, and the stability of lithium battery electrolytes can drastically reduce, and great potential safety hazard be present.
Therefore, it is necessary to which a kind of fire-retardant lithium battery electrolytes are to fill up the blank in market.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of fire-retardant lithium battery electrolytes.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of fire-retardant lithium battery electrolytes, by weight, including following components：Dimethyl sulfoxide (DMSO) 21-25 parts by weight, three
Bromoethane 1-5 parts by weight, dibromo methylfuran 25-31 parts by weight, pyrrolidones 5-11 parts by weight, sulfonyloxy methyl imines potassium 15-
21 parts by weight, lithium phosphate 1-5 parts by weight, sodium carboxymethylcellulose 1-5 parts by weight, poly-aspartate sodium salt 1-5 parts by weight, to benzene
Diamines oxalates 1-5 parts by weight.
The beneficial effects of the invention are as follows：A kind of fire-retardant lithium battery electrolytes are provided, so that lithium battery uses capacity energy
Enough reach more than the 80% of its theoretical capacity, the addition of brominated flame-retardant can effectively reduce battery and spontaneous combustion risk, increase occurs
The security that lithium battery uses.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement：
Including following components further, by weight,：The parts by weight of dimethyl sulfoxide (DMSO) 21, the parts by weight of tribromoethane 1, two
The parts by weight of bromomethyl furans 25, the parts by weight of pyrrolidones 5, the parts by weight of sulfonyloxy methyl imines potassium 15, the parts by weight of lithium phosphate 1, carboxylic first
The parts by weight of base sodium cellulosate 1, the parts by weight of poly-aspartate sodium salt 1, the parts by weight of p-phenylenediamine oxalate 1.
Including following components further, by weight,：The parts by weight of dimethyl sulfoxide (DMSO) 25, the parts by weight of tribromoethane 5, two
The parts by weight of bromomethyl furans 31, the parts by weight of pyrrolidones 11, the parts by weight of sulfonyloxy methyl imines potassium 21, the parts by weight of lithium phosphate 5, carboxylic first
The parts by weight of base sodium cellulosate 5, the parts by weight of poly-aspartate sodium salt 5, the parts by weight of p-phenylenediamine oxalate 5.
Including following components further, by weight,：The parts by weight of dimethyl sulfoxide (DMSO) 22, the parts by weight of tribromoethane 3, two
The parts by weight of bromomethyl furans 26, the parts by weight of pyrrolidones 8, the parts by weight of sulfonyloxy methyl imines potassium 18, the parts by weight of lithium phosphate 2, carboxylic first
The parts by weight of base sodium cellulosate 2, the parts by weight of poly-aspartate sodium salt 2, the parts by weight of p-phenylenediamine oxalate 1.5.
Further, its preparation method comprises the following steps：
1) by the compound than weighing each component, mixing, mixed liquor is obtained；
2) by the mixed liquor in step 1) under ultrasound condition, further mixing is equal, obtains the fire-retardant lithium battery of the present invention
Electrolyte.
Further, the supersonic frequency in the step 2) is 1200Hz, and ultrasonic time is 2 hours.
Embodiment
The principle and feature of the present invention are described with reference to embodiments, the given examples are served only to explain the present invention,
It is not intended to limit the scope of the present invention.
Embodiment 1
A kind of fire-retardant lithium battery electrolytes, by weight, including following components：The parts by weight of dimethyl sulfoxide (DMSO) 21, tribromo
The parts by weight of ethane 1, the parts by weight of dibromo methylfuran 25, the parts by weight of pyrrolidones 5, the parts by weight of sulfonyloxy methyl imines potassium 15, phosphoric acid
The parts by weight of lithium 1, the parts by weight of sodium carboxymethylcellulose 1, the parts by weight of poly-aspartate sodium salt 1, the parts by weight of p-phenylenediamine oxalate 1.
Its preparation method comprises the following steps：
1) by the compound than weighing each component, mixing, mixed liquor is obtained；
2) by the mixed liquor in step 1) under ultrasound condition, further mixing is equal, obtains the fire-retardant lithium battery of the present invention
Electrolyte.
Supersonic frequency in the step 2) is 1200Hz, and ultrasonic time is 2 hours.
Embodiment 2
A kind of fire-retardant lithium battery electrolytes, by weight, including following components：The parts by weight of dimethyl sulfoxide (DMSO) 25, tribromo
The parts by weight of ethane 5, the parts by weight of dibromo methylfuran 31, the parts by weight of pyrrolidones 11, the parts by weight of sulfonyloxy methyl imines potassium 21, phosphoric acid
The parts by weight of lithium 5, the parts by weight of sodium carboxymethylcellulose 5, the parts by weight of poly-aspartate sodium salt 5, the parts by weight of p-phenylenediamine oxalate 5.
Its preparation method comprises the following steps：
1) by the compound than weighing each component, mixing, mixed liquor is obtained；
2) by the mixed liquor in step 1) under ultrasound condition, further mixing is equal, obtains the fire-retardant lithium battery of the present invention
Electrolyte.
Supersonic frequency in the step 2) is 1200Hz, and ultrasonic time is 2 hours.
Embodiment 3
A kind of fire-retardant lithium battery electrolytes, by weight, including following components：The parts by weight of dimethyl sulfoxide (DMSO) 22, tribromo
The parts by weight of ethane 3, the parts by weight of dibromo methylfuran 26, the parts by weight of pyrrolidones 8, the parts by weight of sulfonyloxy methyl imines potassium 18, phosphoric acid
The parts by weight of lithium 2, the parts by weight of sodium carboxymethylcellulose 2, the parts by weight of poly-aspartate sodium salt 2, the weight of p-phenylenediamine oxalate 1.5
Part.
Its preparation method comprises the following steps：
1) by the compound than weighing each component, mixing, mixed liquor is obtained；
2) by the mixed liquor in step 1) under ultrasound condition, further mixing is equal, obtains the fire-retardant lithium battery of the present invention
Electrolyte.
Supersonic frequency in the step 2) is 1200Hz, and ultrasonic time is 2 hours.
Comparative example
The lithium battery that general electrolytic liquid makes.
Contrast test, calculate the theoretical capacity of embodiment 1-3 and comparative example respectively, test its actual capacity and calculate its with
The percentage of theoretical capacity.
| Actual capacity | Theoretical capacity | |
| Embodiment 1 | 81.2% | 1 |
| Embodiment 2 | 80.9% | 1 |
| Embodiment 3 | 80.5% | 1 |
| Comparative example 1 | 65% | 1 |
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (6)
- A kind of 1. fire-retardant lithium battery electrolytes, it is characterised in that by weight, including following components：Dimethyl sulfoxide (DMSO) 21-25 Parts by weight, tribromoethane 1-5 parts by weight, dibromo methylfuran 25-31 parts by weight, pyrrolidones 5-11 parts by weight, sulfonyloxy methyl Imines potassium 15-21 parts by weight, lithium phosphate 1-5 parts by weight, sodium carboxymethylcellulose 1-5 parts by weight, poly-aspartate sodium salt 1-5 weights Measure part, p-phenylenediamine oxalate 1-5 parts by weight.
- 2. a kind of fire-retardant lithium battery electrolytes according to claim 1, it is characterised in that by weight, including with the following group Point：The parts by weight of dimethyl sulfoxide (DMSO) 21, the parts by weight of tribromoethane 1, the parts by weight of dibromo methylfuran 25, the parts by weight of pyrrolidones 5, first The parts by weight of base sulfimide potassium 15, the parts by weight of lithium phosphate 1, the parts by weight of sodium carboxymethylcellulose 1, the weight of poly-aspartate sodium salt 1 Part, the parts by weight of p-phenylenediamine oxalate 1.
- 3. a kind of fire-retardant lithium battery electrolytes according to claim 1, it is characterised in that by weight, including with the following group Point：The parts by weight of dimethyl sulfoxide (DMSO) 25, the parts by weight of tribromoethane 5, the parts by weight of dibromo methylfuran 31, the parts by weight of pyrrolidones 11, The parts by weight of sulfonyloxy methyl imines potassium 21, the parts by weight of lithium phosphate 5, the parts by weight of sodium carboxymethylcellulose 5, the weight of poly-aspartate sodium salt 5 Measure part, the parts by weight of p-phenylenediamine oxalate 5.
- 4. a kind of fire-retardant lithium battery electrolytes according to claim 1, it is characterised in that by weight, including with the following group Point：The parts by weight of dimethyl sulfoxide (DMSO) 22, the parts by weight of tribromoethane 3, the parts by weight of dibromo methylfuran 26, the parts by weight of pyrrolidones 8, first The parts by weight of base sulfimide potassium 18, the parts by weight of lithium phosphate 2, the parts by weight of sodium carboxymethylcellulose 2, the weight of poly-aspartate sodium salt 2 Part, the parts by weight of p-phenylenediamine oxalate 1.5.
- 5. a kind of fire-retardant lithium battery electrolytes according to claim 1, it is characterised in that its preparation method includes following step Suddenly：1) by the compound than weighing each component, mixing, mixed liquor is obtained；2) by the mixed liquor in step 1) under ultrasound condition, further mixing is equal, obtains fire-retardant lithium battery electrolytes.
- A kind of 6. fire-retardant lithium battery electrolytes according to claim 5, it is characterised in that the supersonic frequency in the step 2) For 1200Hz, ultrasonic time is 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711188603.9A CN107834109A (en) | 2017-11-24 | 2017-11-24 | A kind of fire-retardant lithium battery electrolytes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711188603.9A CN107834109A (en) | 2017-11-24 | 2017-11-24 | A kind of fire-retardant lithium battery electrolytes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834109A true CN107834109A (en) | 2018-03-23 |
Family
ID=61652456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711188603.9A Withdrawn CN107834109A (en) | 2017-11-24 | 2017-11-24 | A kind of fire-retardant lithium battery electrolytes |
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| Country | Link |
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| CN (1) | CN107834109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713364A (en) * | 2018-12-27 | 2019-05-03 | 湖南星际动力新能源有限公司 | A kind of 18650 lithium battery of high capacity and its preparation process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11317232A (en) * | 1999-04-05 | 1999-11-16 | Mitsubishi Chemical Corp | Flame retardant for electrolyte for lithium batteries |
| CN103715463A (en) * | 2013-12-07 | 2014-04-09 | 河南超威电源有限公司 | Lead-acid storage battery electrolyte solution and preparation method thereof |
| CN106684446A (en) * | 2017-02-06 | 2017-05-17 | 深圳市斯诺实业发展股份有限公司 | Lithium battery electrolyte and preparation method thereof |
| CN107046150A (en) * | 2017-02-06 | 2017-08-15 | 安徽鹰龙工业设计有限公司 | A kind of electrolyte for lithium cells and preparation method thereof |
-
2017
- 2017-11-24 CN CN201711188603.9A patent/CN107834109A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11317232A (en) * | 1999-04-05 | 1999-11-16 | Mitsubishi Chemical Corp | Flame retardant for electrolyte for lithium batteries |
| CN103715463A (en) * | 2013-12-07 | 2014-04-09 | 河南超威电源有限公司 | Lead-acid storage battery electrolyte solution and preparation method thereof |
| CN106684446A (en) * | 2017-02-06 | 2017-05-17 | 深圳市斯诺实业发展股份有限公司 | Lithium battery electrolyte and preparation method thereof |
| CN107046150A (en) * | 2017-02-06 | 2017-08-15 | 安徽鹰龙工业设计有限公司 | A kind of electrolyte for lithium cells and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713364A (en) * | 2018-12-27 | 2019-05-03 | 湖南星际动力新能源有限公司 | A kind of 18650 lithium battery of high capacity and its preparation process |
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