CN114361592B - Additive and application thereof in sodium ion battery electrolyte - Google Patents
Additive and application thereof in sodium ion battery electrolyte Download PDFInfo
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- CN114361592B CN114361592B CN202111627277.3A CN202111627277A CN114361592B CN 114361592 B CN114361592 B CN 114361592B CN 202111627277 A CN202111627277 A CN 202111627277A CN 114361592 B CN114361592 B CN 114361592B
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 64
- 239000000654 additive Substances 0.000 title claims abstract description 38
- 230000000996 additive effect Effects 0.000 title claims abstract description 37
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 20
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 30
- 239000011734 sodium Substances 0.000 claims abstract description 30
- SBLRHMKNNHXPHG-UHFFFAOYSA-N 4-fluoro-1,3-dioxolan-2-one Chemical compound FC1COC(=O)O1 SBLRHMKNNHXPHG-UHFFFAOYSA-N 0.000 claims abstract description 27
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910021385 hard carbon Inorganic materials 0.000 claims abstract description 8
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 6
- -1 sodium hexafluorophosphate Chemical compound 0.000 claims description 17
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 claims description 16
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 14
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 13
- 159000000000 sodium salts Chemical class 0.000 claims description 11
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 8
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 4
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 4
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 3
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 3
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 3
- 229910001495 sodium tetrafluoroborate Inorganic materials 0.000 claims description 3
- 150000005678 chain carbonates Chemical class 0.000 claims description 2
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 claims description 2
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 9
- 239000007784 solid electrolyte Substances 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 12
- 229910052744 lithium Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- IRJHRRSZWWXNJL-UHFFFAOYSA-N prop-2-yne-1-sulfonic acid;sodium Chemical compound [Na].OS(=O)(=O)CC#C IRJHRRSZWWXNJL-UHFFFAOYSA-N 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 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 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000002000 Electrolyte additive Substances 0.000 description 1
- ZMVMBTZRIMAUPN-UHFFFAOYSA-H [Na+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O Chemical compound [Na+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O ZMVMBTZRIMAUPN-UHFFFAOYSA-H 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
Abstract
The invention relates to the field of batteries, in particular to an additive, electrolyte and application thereof in improving battery cycle performance. The invention provides an additive for electrolyte, which comprises 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate; wherein, based on the total mass of the additive for the electrolyte, the content of the 1-propyne-3-sodium propyl sulfonate is 10-60 percent, and the mass ratio of the 1-propyne-3-sodium propyl sulfonate to the fluoroethylene carbonate is (1-6): (4-9). The additive provided by the invention can form a thin and continuous solid electrolyte membrane on the surface of a hard carbon material in preference to an electrolyte solvent; meanwhile, a certain amount of NaS and NaF with lower impedance and better conductivity are arranged in the membrane, so that the battery is ensured to have certain multiplying power performance. The sodium ion battery using the electrolyte provided by the invention has excellent cycle performance.
Description
Technical Field
The invention relates to the field of batteries, in particular to an additive, electrolyte and application thereof in improving battery cycle performance.
Background
In the 21 st century, lithium batteries were used in many fields such as cellular phones, computers, wearable devices, electric vehicles, two-wheeled bicycles, electric tools, street lamps, and the like. In recent years, consumption of lithium resources has been shown to be large in consumption and rapid in consumption, and the increase in lithium production cannot meet the phenomenon of the increase in consumption: this is because, firstly, lithium resources are limited and exist mainly in spodumene ore and salt lake lithium states, and secondly, winter salt lake lithium cannot extract lithium.
In contrast, sodium is widely available, has a large reserve, is 420 times more expensive than lithium, and is far less expensive than lithium. In recent years, along with the rapid rise of lithium price, the sodium ion battery is expected to be widely focused at a cost which is 30-50% lower than that of the lithium ion battery, and particularly has attractive application prospects in the fields of energy storage, hybrid power and lead-acid battery replacement.
Sodium is the second light alkali metal, similar in chemistry to lithium, but with a sodium ion radius of 0.102nm 34.2% greater than a lithium ion radius of 0.076nm, resulting in sodium ions unsuitable for energy storage in conventional, less-interlayer-spacing graphite negative electrode materials, whereas hard carbon materials are considered to be ideal future negative electrode materials for sodium-ion batteries because of their greater interlayer spacing than graphite. However, it is found that the ester-based electrolyte in the traditional lithium battery, such as Ethylene Carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), propylene Carbonate (PC) and the like, generates a rough, uneven and thicker incomplete solid electrolyte membrane on the surface of the negative electrode of the sodium ion battery, and the solid electrolyte membrane is continuously broken and grown in the battery cycle process, so that the internal resistance of the battery is continuously increased along with the cycle, and the cycle life of the battery is shorter.
Disclosure of Invention
The first object of the invention is to provide an additive for an electrolyte, comprising 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate; wherein, based on the total mass of the additive for the electrolyte, the percentage content of the 1-propyne-3-sodium sulfonate propyl ether is 10-60 percent; the mass ratio of the 1-propyne-3-sodium propyl sulfonate to the fluoroethylene carbonate is (1-6): (4-9).
The additive provided by the invention can form a thin and continuous solid electrolyte membrane on the surface of a hard carbon material in preference to an electrolyte solvent, and the main component of the membrane is continuous RCH 2 ONa、RCH 2 SONA is generated by 1-propyne-3-sodium sulfonate propyl ether, and R is alkyl; meanwhile, a certain amount of NaS and NaF with lower impedance and better conductivity are arranged in the membrane, and the NaS and NaF are formed by 1-propyne-3-sodium sulfonate propyl ether and fluoroethylene carbonate, so that the battery is ensured to have certain multiplying power performance.
Preferably, the percentage of the 1-propyne-3-sodium propyl sulfonate is 30-40%.
When the mass percentage of the 1-propyne-3-sodium sulfonate propyl ether in the additive is within the above range, a continuous solid electrolyte film can be formed on the surface of the hard carbon, and the electrolyte film has appropriate impedance, so that the conductivity of the battery can be considered.
As a preferred embodiment, the electrolyte additive comprises the following components in mass ratio (1-6): (4-9) sodium propyl 1-propyne-3-sulfonate and fluoroethylene carbonate, more preferably (3-4): (6-7).
A second object of the present invention is to provide a battery electrolyte comprising the above additive for an electrolyte.
Preferably, the percentage of the additive for the electrolyte is 1 to 3% based on the total mass of the electrolyte for a battery.
Preferably, the battery electrolyte further comprises an organic solvent, wherein the organic solvent comprises the following components in percentage by mass (1-3): cyclic carbonates and chain carbonates of (5-8); the cyclic carbonate is selected from one or two of ethylene carbonate and propylene carbonate; the chain carbonic ester is selected from one or more of dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, dipropyl carbonate and methyl propyl carbonate.
Preferably, the battery electrolyte further comprises sodium salt, wherein the sodium salt is selected from one or more of sodium hexafluorophosphate, sodium perchlorate and sodium tetrafluoroborate.
Preferably, the percentage of the sodium salt is 10-20%.
The above-described schemes can be combined by the skilled person in accordance with common knowledge to obtain a preferred scheme of the battery electrolyte of the present invention.
As a preferred scheme, the battery electrolyte comprises the following components in parts by weight:
77-89 parts of organic solvent, 10-20 parts of sodium salt and 1-3 parts of additive for electrolyte.
A third object of the present invention is to provide a battery comprising the above battery electrolyte.
Further, the battery provided by the invention contains the battery electrolyte, and the negative electrode of the battery is made of a hard carbon material.
Preferably, the battery is a sodium ion battery.
The invention has the beneficial effects that: the additive provided by the invention can form a thin and continuous solid electrolyte membrane on the surface of a hard carbon material in preference to an electrolyte solvent; meanwhile, a certain amount of NaS and NaF with lower impedance and better conductivity are arranged in the membrane, so that the battery is ensured to have certain multiplying power performance. The sodium ion battery using the electrolyte provided by the invention has excellent cycle performance.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The examples are not intended to identify the particular technology or conditions, and are either conventional or are carried out according to the technology or conditions described in the literature in this field or are carried out according to the product specifications. The reagents and instruments used, etc. are not identified to the manufacturer and are conventional products available for purchase by regular vendors.
In order to more advantageously compare the difference in effect of the additives, the same sodium salt and organic solvent were used in the electrolytes of the following examples, and in fact, the sodium salt and organic solvent were used as long as they were within the range defined in the present invention, all had the effects mentioned in the present invention.
Example 1
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 1:9.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 0.3g of 1-propyne-3-sulfonic acid sodium propyl ether and 2.7g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 2
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 1:4.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 0.6g of 1-propyne-3-sulfonic acid sodium propyl ether and 2.4g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 3
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 3:7.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 0.9g of 1-propyne-3-sodium propyl sulfonate and 2.1g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 4
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 2:3.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 1.2g of 1-propyne-3-sulfonic acid sodium propyl ether and 1.8g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 5
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 1:1.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 1.5g of 1-propyne-3-sulfonic acid sodium propyl ether and 1.5g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 6
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 3:2.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 50g of dimethyl carbonate, 1.8g of 1-propyne-3-sulfonic acid sodium propyl ether and 1.2g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Example 7
The present example provides an additive for an electrolyte, which contains 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate in a mass ratio of 3:2.
The embodiment further provides an electrolyte containing the additive, which comprises the following formula: 17g of sodium hexafluorophosphate, 30g of ethylene carbonate, 25g of methyl ethyl carbonate, 25g of dimethyl carbonate, 1.8g of 1-propyne-3-sulfonic acid sodium propyl ether and 1.2g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Comparative example 1
This comparative example provides an electrolyte which differs from example 3 only in that: fluoroethylene carbonate and 1-propyne-3-sodium propyl sulfonate are not added;
the formula is as follows: 17g of sodium hexafluorophosphate, 31.125g of ethylene carbonate and 51.875g of dimethyl carbonate.
The preparation method comprises mixing the above materials.
Comparative example 2
This comparative example provides an electrolyte which differs from example 3 only in that: only 1-propyne-3-sodium sulfonate propyl ether is added, and fluoroethylene carbonate is not added;
the formula is as follows: 17g of sodium hexafluorophosphate, 30.79g of ethylene carbonate, 51.31g of dimethyl carbonate and 0.9g of 1-propyne-3-sulfonic acid sodium propyl ether.
The preparation method comprises mixing the above materials.
Comparative example 3
This comparative example provides an electrolyte which differs from example 3 only in that: only fluoroethylene carbonate is added, and 1-propyne-3-sodium propyl sulfonate is not added;
the formula is as follows: 17g of sodium hexafluorophosphate, 30.338g of ethylene carbonate, 50.562g of dimethyl carbonate and 2.1g of fluoroethylene carbonate.
The preparation method comprises mixing the above materials.
Performance verification
The electrolytes of examples and comparative examples were injected into 26650-1.8Ah sodium ion battery cells (positive vanadium sodium phosphate, negative hard carbon) to prepare batteries.
And (3) carrying out cycle test on the prepared battery, cycling for 1000 times, recording the discharge capacity of the first battery and the 1000 th battery, and calculating the discharge retention rate. Discharge retention = first discharge capacity/1000 th discharge capacity 100%, and the results are shown in table 1.
TABLE 1 discharge retention results
| Project | Discharge retention rate |
| Example 1 | 71.2％ |
| Example 2 | 86.5％ |
| Example 3 | 95.3％ |
| Example 4 | 94.6％ |
| Example 5 | 86.9％ |
| Example 6 | 77.8％ |
| Example 7 | 80.2％ |
| Comparative example 1 | 23.8％ |
| Comparative example 2 | 85.7％ |
| Comparative example 3 | 38.6％ |
The proportion of the 1-propyne-3-sodium sulfonate propyl ether added in the additive is 30-40% in comparison with examples 1-6, the sodium ion battery has the most excellent cycle performance, and the 1-propyne-3-sodium sulfonate propyl ether can greatly improve the cycle life of the sodium ion battery in comparison with examples 1-3, and the 1-propyne-3-sodium sulfonate propyl ether and fluoroethylene carbonate are combined to have better cycle life.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (12)
1. An additive for sodium ion battery electrolyte is characterized by comprising 1-propyne-3-sodium propyl sulfonate and fluoroethylene carbonate;
wherein, based on the total mass of the additive for the sodium ion battery electrolyte, the percentage content of the 1-propyne-3-sodium sulfonate propyl ether is 10-60%;
the mass ratio of the 1-propyne-3-sodium propyl sulfonate to the fluoroethylene carbonate is (1-6): (4-9).
2. The additive for sodium ion battery electrolyte according to claim 1, wherein the percentage content of 1-propyne-3-sodium propyl sulfonate is 30 to 40% based on the total mass of the additive for sodium ion battery electrolyte.
3. A battery electrolyte comprising the additive for a sodium ion battery electrolyte according to claim 1 or 2.
4. The battery electrolyte according to claim 3, wherein the percentage of the additive for a sodium ion battery electrolyte is 1 to 3% based on the total mass of the battery electrolyte.
5. The battery electrolyte according to claim 3 or 4, further comprising an organic solvent; the organic solvent comprises the following components in percentage by mass (1-3): cyclic carbonates and chain carbonates of (5-8);
the cyclic carbonate is selected from one or two of ethylene carbonate and propylene carbonate;
the chain carbonic ester is selected from one or more of dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, dipropyl carbonate and methyl propyl carbonate.
6. The battery electrolyte according to claim 3 or 4, further comprising a sodium salt selected from one or more of sodium hexafluorophosphate, sodium perchlorate, sodium tetrafluoroborate.
7. The battery electrolyte according to claim 5, further comprising a sodium salt selected from one or more of sodium hexafluorophosphate, sodium perchlorate, sodium tetrafluoroborate.
8. The battery electrolyte of claim 6 wherein the percentage of sodium salt is 10-20% based on the total mass of the battery electrolyte.
9. The battery electrolyte of claim 7 wherein the percentage of sodium salt is 10-20% based on the total mass of the battery electrolyte.
10. The battery electrolyte according to claim 9, which comprises the following components in parts by weight: 77-89 parts of organic solvent, 10-20 parts of sodium salt and 1-3 parts of additive for electrolyte.
11. A battery comprising the battery electrolyte according to any one of claims 3 to 10, and a negative electrode made of a hard carbon material.
12. The battery according to claim 11, characterized in that it is a sodium ion battery.
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| CN105609877A (en) * | 2016-02-03 | 2016-05-25 | 东莞市凯欣电池材料有限公司 | High-voltage lithium-ion battery electrolyte and high-voltage lithium-ion battery |
| EP3252187B1 (en) * | 2016-05-30 | 2020-04-29 | Schleifring GmbH | Slipring with reduced contact noise |
| CN112448031B (en) * | 2019-08-30 | 2022-04-08 | 中国科学院苏州纳米技术与纳米仿生研究所 | Electrolyte and lithium metal battery |
| CN112267134B (en) * | 2020-11-24 | 2023-05-30 | 中山市康迪斯威科技有限公司 | Alloy electroplating solution |
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|---|---|---|---|---|
| JP2001357874A (en) * | 2000-06-13 | 2001-12-26 | Shin Kobe Electric Mach Co Ltd | Nonaqueous electrolyte secondary battery |
| WO2013045561A1 (en) * | 2011-09-30 | 2013-04-04 | Westfälische Wilhelms-Universität Münster | Electrochemical cell |
| JP2017117684A (en) * | 2015-12-25 | 2017-06-29 | セントラル硝子株式会社 | Electrolytic solution for nonaqueous electrolyte battery, and nonaqueous electrolyte battery using the same |
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