CN109473717A - A kind of electrolyte and the high nickel-based battery of high voltage suitable for the high nickel power battery of high voltage - Google Patents
A kind of electrolyte and the high nickel-based battery of high voltage suitable for the high nickel power battery of high voltage Download PDFInfo
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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
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- 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
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
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- H01M2300/0028—Organic electrolyte characterised by the solvent
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Abstract
The present invention relates to a kind of electrolyte suitable for the high nickel power battery of high voltage, including lithium salts, organic solvent and additive, the organic solvent is the mixture of non-fluorinated cyclic carbonate and fluorine-containing chain ester, the additive is the combination of additive A and/or additive B and other additives；The fluorine-containing chain ester is selected from one of substance shown in following general structure or a variety of:The additive A is selected from one of substance shown in following general structure or a variety of:The additive B is selected from one of substance shown in following general structure or a variety of:
Description
Technical field
The invention belongs to electrochemical technology fields, and in particular to a kind of electrolyte suitable for the high nickel power battery of high voltage
And the high nickel-based battery of high voltage.
Background technique
Energy density is high, power density is big, good cycle, memory-less effect, green ring due to having for lithium ion battery
The features such as guarantor, mobile communication equipment such as mobile phone, mobile camera, laptop, in mobile phone various electronic products
Be used widely, at the same be also the following electric car energy supplying system in strong candidate.What lithium battery electrolytes used
Chain organic solvent often has: dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl propyl carbonate etc. and their two kinds
Or a variety of mixtures, the lithium salts used usually have: lithium hexafluoro phosphate, lithium perchlorate, LiBF4, dioxalic acid close lithium borate,
Trifluoromethyl sulfonic acid lithium, double fluorine sulfimide lithiums etc. and their two or more mixtures.Since lithium hexafluoro phosphate exists
Labile property, especially in nonaqueous electrolytic solution there are under the conditions of micro-moisture, the decomposition rate of lithium salts can be further speeded up.And
Lithium battery applied at elevated temperature environment will promote the HF content of electrolyte to dramatically increase, and HF will destroy the positive and negative pole surface of lithium battery
SEI film, to seriously affect the chemical property of lithium battery.
With lithium battery application field extension, the fast development of special electric car, market is to power battery performance
It is proposed high-energy density requirement, the year two thousand twenty single battery energy density reaches 300wh/kg.To reach this target, positive and negative anodes material
Material need to further increase capacity, and positive electrode, which mainly passes through to increase nickel content and improve charge cutoff current potential, improves discharge capacity.
Meanwhile under high voltage condition, on positive electrode surface oxidation reaction can occur for electrolyte, to cause the circulation of material and battery
Performance is poor, and especially under hot conditions, the oxidation reaction of electrolyte can be further exacerbated by.It should be pointed out that being directed to high voltage
Tertiary cathode material is mainly adjusted by electrolysis additive at this stage to improve the cycle performance of battery and shelving property of high temperature
Can, by adjusting additive types and ratio, Zhi Nenggai in such as Chinese publication number CN105591158A, CN105355970A patent
The high-temperature storage performance of kind high voltage ternary battery.Publication number CN104617333A is by using additive: methane sulfonic acid acid anhydride with
Vinylene carbonate combines method, so that battery has good cycle characteristics and cryogenic property and high-temperature storage performance.
And Publication No. CN105428719A, organic solvent are molten by cyclic carbonate solvents, fluorinated solvents and carbonic ester
Agent composition, additive are fluoro- 1, the 3- propene sultone of 3-, electrolyte obtained be applied to the lithium of lithium cobaltate cathode material from
The cycle life and high-temperature behavior of the wide temperature lithium ion battery of high voltage can be effectively improved in sub- battery, still, found through practice,
High temperature cyclic performance when its nickel power battery high applied to high voltage is still to be improved.
Summary of the invention
High temperature circulation when nickel power battery high for high voltage technical problem to be solved by the invention is to provide one kind
The good electrolyte of energy.
Another technical problem to be solved by this invention is to provide a kind of nickelic power of the high voltage using above-mentioned electrolyte
Battery.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
It is an object of the present invention to provide a kind of electrolyte suitable for the high nickel power battery of high voltage, including lithium salts,
Organic solvent and additive, the organic solvent is the mixture of non-fluorinated cyclic carbonate and fluorine-containing chain ester, described
Additive is the combination of additive A and/or additive B and other additives；
Wherein, the fluorine-containing chain ester is selected from one of substance shown in following general structure or a variety of:Wherein, R1、R2It independently is unsubstituted or alkane that the carbon atom number that is replaced by fluorine atoms is 1~3
Base and R1、R2In at least one be the alkyl that the carbon atom number being replaced by fluorine atoms is 1~3, wherein it is described by fluorine atom
Part is substituted by replace or all replace；
The additive A is selected from one of substance shown in following general structure or a variety of:Wherein, R3
For-(CH2)nOr-(CH2)nO-, n are 1~4；
The additive B is selected from one of substance shown in following general structure or a variety of:Its
In, R4、R5Independently selected from one of methoxyl group, ethyoxyl, propoxyl group, butoxy；
Other described additives are selected from biphenyl, vinylene carbonate, vinylethylene carbonate, fluoro ethylene carbonate
One of ester, cyclohexyl benzene, tert-butyl benzene, succinonitrile, double fluorine sulfimide lithiums, ethylene sulfite are a variety of.
Preferably, the non-fluorinated cyclic carbonate be selected from ethylene carbonate, propene carbonate, butylene,
One of gamma-butyrolacton, gamma-valerolactone, δ-valerolactone, 6-caprolactone are a variety of.
Preferably, the fluorine-containing chain ester is selected from one of substance shown in following structural formula or a variety of:
Preferably, the non-fluorinated cyclic carbonate accounts for the 5%~50% of the organic solvent gross mass, described
Fluorine-containing chain ester accounts for the 50%~95% of the organic solvent gross mass.
It is further preferred that the non-fluorinated cyclic carbonate account for the organic solvent gross mass 10%~
40%, the fluorine-containing chain ester accounts for the 60%~90% of the organic solvent gross mass.
It is highly preferred that the non-fluorinated cyclic carbonate accounts for the 20%~40% of the organic solvent gross mass, institute
The fluorine-containing chain ester stated accounts for the 60%~80% of the organic solvent gross mass.
Most preferably, the non-fluorinated cyclic carbonate accounts for the 25%~35% of the organic solvent gross mass, institute
The fluorine-containing chain ester stated accounts for the 65%~75% of the organic solvent gross mass.
A preferred embodiment according to the present invention, the organic solvent are ethylene carbonate and ethyl fluoroacetate
The mixture of mixture either ethylene carbonate and ethyl difluoro.
Preferably, the additive A is selected from propylene sulfite, butylene sulfite, 1,3-propane sultone, sulphur
One of vinyl acetate is a variety of.
Preferably, the additive A and/or the quality that feeds intake of additive B account for the electrolyte gross mass 0.1~
10%, the quality that feeds intake of other additives accounts for the 0.1~10% of the electrolyte gross mass.
It is further preferred that the quality that feeds intake of the additive A and/or additive B accounts for the electrolyte gross mass
0.1~5%, the quality that feeds intake of other additives accounts for the 0.1~5% of the electrolyte gross mass.
It is highly preferred that the quality that feeds intake of the additive A and/or additive B accounts for the 0.5 of the electrolyte gross mass
~2%, the quality that feeds intake of other additives accounts for the 0.5~2% of the electrolyte gross mass.
Most preferably, the additive A and/or the quality that feeds intake of additive B account for the 0.5 of the electrolyte gross mass
~1.5%, the quality that feeds intake of other additives accounts for the 0.5~1% of the electrolyte gross mass.
A preferred embodiment according to the present invention, the additive are 1,3-propane sultone and vinylene carbonate
The combination of the combination sulfuric acid vinyl ester and vinylene carbonate of ester or 1,3-propane sultone and double fluorine sulphonyl
The combination of the combination of imine lithium or sulfuric acid vinyl ester and double fluorine sulfimide lithiums.
Preferably, the molar concentration of the lithium salts is 0.001~2mol/L.
It is further preferred that the molar concentration of the lithium salts is 0.1~2mol/L.
It is highly preferred that the molar concentration of the lithium salts is 0.5~1.5mol/L.
Preferably, the lithium salts is selected from LiBF4、LiPF6、LiAsF6、LiClO4、LiN(SO2F)2、LiN
(SO2CF3)2、LiN(SO2C2F5)2、LiSO3CF3、LiC2O4BC2O4、LiFC6F5BC2O4、Li2PO2F2, in LiBOB, LiODFB
It is one or more.
It is further preferred that the lithium salts is selected from LiPF6、LiN(SO2F)2、Li2PO2F2, in LiBOB, LiODFB
It is one or more.
It is a further object to provide a kind of high nickel power batteries of high voltage, use above-mentioned electrolyte, wherein
The high voltage is >=4.2V, nickelic mass content >=30% for nickel.
Preferably, the positive electrode of the high nickel power battery of the high voltage is LiNixAyBZO2, wherein A, B independently are
One of Co, Mn, Al, Fe, V, Mg, Sr, Ti, Ca, Zr, Zn, Si, x+y+z=1, X >=0.5,0≤y≤0.5,0≤z≤
0.5；Negative electrode material is carbon material, alloy material, metal material, carbon silicon materials, carbon earth silicon material, oxidation of coal Asia silicon material
One of material, carbon tin material, oxidation of coal tin material.
It is further preferred that the negative electrode material is artificial graphite, natural graphite, carbonaceous mesophase spherules, hard carbon, soft carbon
One of.
In the present invention, battery charge cutoff current potential 4.6V, prior to 4.4V, more preferably in 4.35V.
When the electrolyte is applied to high voltage (>=4.2V) nickelic (Ni content >=30%) power battery, adding in electrolyte
Add agent that can form effective, stable SEI film on positive and negative pole material surface, due to additive formed SEI film mainly by
Inorganic compound composition, can effectively improve under hot conditions, nickelic (Ni content >=30%) power of high voltage (>=4.2V)
The cyclicity of battery inhibits the gas production of lithium battery cyclic process.Meanwhile the cyclic solvent in electrolyte can effectively with lithium
Salt forms solvation lithium ion；And fluorine-containing chain solvent has compared with low reaction activity, when positive electrode oxidizing potential is higher than 4.2V
When, it is not easy that oxidation reaction and electrochemical reaction occurs with positive electrode surface, to guarantee the stability of electrolyte solvent.
So-called high voltage in the present invention refers to and mixes positive electrode, conductive carbon and binder 90:5:5 in mass ratio
Afterwards, it is coated on aluminium foil, is kept for 24 hours by 120 DEG C of vacuum, then it is as working electrode, and lithium metal is as to electrode, reference electricity
Three electrodes of pole assembling are immersed in nonaqueous electrolytic solution, and with the sweep speed of+1mV/s, voltage, which rises between 4.2V-4.6V, appoints
One voltage value (vs.Li+/Li)；However voltage is set to drop to 3.0V with the sweep speed of -1mV/s.By positive electrode, cathode stone
After ink material, diaphragm and electrolyte assembling full battery, battery voltage value >=4.2V.Battery appearance be not limited to Soft Roll, it is rectangular and
Cylinder etc..
It is so-called nickelic in the present invention, refer to mass content >=30% of nickel in positive electrode, primarily to improving
The specific discharge capacity of material reaches the requirement of high-energy density power battery.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
The present invention passes through the synergistic effect of organic solvent and additive, improves the electrochemistry of the high nickel power battery of high voltage
Performance, especially high temperature cyclic performance, it is suppressed that the gas production of battery under the high temperature conditions.
Specific embodiment
The application is described in detail below with reference to embodiment, but the application is not limited to these embodiments.If not special herein
Illustrate, " % " representation quality percentage.
Cell manufacturing process: LiNi is pressed0.5Co0.2Mn0.3O2: Kynoar (PVDF): conductive carbon SP=95:3.5:
1.5, it is added in NMP and stirs evenly, form slurry, slurry is coated in aluminum foil current collector on coating machine, dried through 120 DEG C
Electrode film is made in dry, roll-in, cutting.With identical technique, mass ratio is the artificial graphite of 95:3:2: carboxymethyl cellulose
Sodium (CMC): butadiene-styrene rubber (SBR), which is added in secondary water, to stir evenly, and forms slurry, slurry is coated in copper foil on coating machine
On collector, through 120 DEG C of drying, roll-in, cuttings, negative electrode plate is made.By positive plate, negative electrode tab and PP membrane winding at electricity
Core, then battery core is fitted into aluminum plastic film, edge sealing.Fluid injection, sealing, obtain Soft Roll polymer Li-ion battery after vacuum drying.
Battery high-temperature test: assembled battery is melted into first, is melted into condition are as follows: extremely with 0.1C constant-current charge
4.4V stands 10min finally with 4.4V constant-voltage charge 2h, then with 0.2C constant-current discharge to 3.0V.High-temperature lithium ion battery circulation
The test condition of performance are as follows: under the conditions of 55 DEG C of high temperature, with 1C constant-current charge to 4.4V, then with 4.4V constant-voltage charge 2h, stand
10min stands 10min with 1C constant-current discharge to 3.0V.
Embodiment 1-7 and comparative example 1-2
It (is write a Chinese character in simplified form: EFA with ethyl fluoroacetate；CAS:459-72-3 it) is used as chain solvent, specific process for preparation is as follows:
Conventional electrolysis liquid preparation: by weight take respectively 30% ethylene carbonate (EC), 70% ethyl fluoroacetate (write a Chinese character in simplified form:
EFA；CAS:459-72-3) or 70% methyl ethyl carbonate (EMC).In glove box of the humidity less than 1%, it is sufficiently mixed
It is even, it is configured to electrolyte solvent.Then, the electrolytic salt LiPF that total amount is 1mol/L is added by several times6, matter salt to be electrolysed is sufficiently molten
Solution adds the vinylene carbonate (VC) and 1,3-propane sultone (PS) or sulfuric acid vinyl ester (DTD) of different content；Shelve 24
Hour；Obtain the electrolyte of embodiment 1-7 and comparative example 1-2.
Following table is to use the battery of the electrolyte of embodiment 1-7 and comparative example 1-2 according to the survey of above-mentioned high temperature cyclic performance
Strip part carries out testing the obtained high temperature cyclic performance data at 55 DEG C.
Embodiment 8-14 and comparative example 3-4
It (is write a Chinese character in simplified form: DFAE with ethyl difluoro；CAS:454-31-9 it) is used as chain solvent, specific process for preparation is such as
Under:
The preparation of conventional electrolysis liquid: 30% ethylene carbonate (EC), (letter of 70% ethyl difluoro are taken respectively by weight
It writes: DFAE；CAS:454-31-9) or 70% methyl ethyl carbonate (EMC).In glove box of the humidity less than 1%, it is sufficiently mixed
Uniformly, it is configured to electrolyte solvent.Then, the electrolytic salt LiPF that total amount is 1mol/L is added by several times6, matter salt to be electrolysed is abundant
The vinylene carbonate (VC) and 1,3-propane sultone (PS) or sulfuric acid vinyl ester (DTD) of different content are added in dissolution；It shelves
24 hours；Obtain the electrolyte of embodiment 8-14 and comparative example 3-4.
Following table is to use the battery of the electrolyte of embodiment 8-14 and comparative example 3-4 according to the survey of above-mentioned high temperature cyclic performance
Strip part carries out testing the obtained high temperature cyclic performance data at 55 DEG C.
Embodiment 15-21 and comparative example 5-6
It (is write a Chinese character in simplified form: EFA with ethyl fluoroacetate；CAS:459-72-3 it) is used as chain solvent, specific process for preparation is as follows:
Conventional electrolysis liquid preparation: by weight take respectively 30% ethylene carbonate (EC), 70% ethyl fluoroacetate (write a Chinese character in simplified form:
EFA；CAS:459-72-3) or 70% methyl ethyl carbonate (EMC).In glove box of the humidity less than 1%, it is sufficiently mixed
It is even, it is configured to electrolyte solvent.Then, the electrolytic salt LiPF that total amount is 1mol/L is added by several times6, matter salt to be electrolysed is sufficiently molten
Solution adds double fluorine sulfimide lithiums (LiFSI) and 1,3-propane sultone (PS) or the sulfuric acid vinyl ester (DTD) of different content；
It shelves 24 hours；Obtain the electrolyte of embodiment 15-21 Yu comparative example 5-6.
Following table is the battery of the electrolyte of embodiment 15-21 and comparative example 5-6 according to the test of above-mentioned high temperature cyclic performance
Condition carries out testing the obtained high temperature cyclic performance data at 55 DEG C.
Embodiment 22-28 and comparative example 7-8
It (is write a Chinese character in simplified form: DFAE with ethyl difluoro；For CAS:454-31-9 as chain solvent, specific process for preparation is as follows:
Conventional electrolysis liquid preparation: by weight the ethyl difluoro (letter for taking 30% ethylene carbonate (EC), 70% respectively
It writes: DFAE；CAS:454-31-9) or 70% methyl ethyl carbonate (EMC).In glove box of the humidity less than 1%, it is sufficiently mixed
Uniformly, it is configured to electrolyte solvent.Then, the electrolytic salt LiPF that total amount is 1mol/L is added by several times6, matter salt to be electrolysed is abundant
Double fluorine sulfimide lithiums (LiFSI) and 1,3-propane sultone (PS) or the sulfuric acid vinyl ester of different content are added in dissolution
(DTD)；It shelves 24 hours；Obtain the electrolyte of embodiment 22-28 Yu comparative example 7-8；
Following table is the battery of the electrolyte of embodiment 22-28 and comparative example 7-8 according to the test of above-mentioned high temperature cyclic performance
Condition carries out testing the obtained high temperature cyclic performance data at 55 DEG C.
Comparative example 9-12
Conventional electrolysis liquid preparation: by weight the trifluoroacetic acid second for taking 30% ethylene carbonate (EC), different proportion respectively
Ester (TFAE:CAS:383-63-1) and methyl ethyl carbonate (EMC).In glove box of the humidity less than 1%, it is sufficiently mixed uniformly,
It is configured to electrolyte solvent.Then, the electrolytic salt LiPF that total amount is 1mol/L is added by several times6, matter salt to be electrolysed sufficiently dissolves,
Double fluorine sulfimide lithiums (LiFSI) of addition different content and 1,3-propane sultone (PS) or sulfuric acid vinyl ester (DTD)；It shelves
24 hours；Obtain the electrolyte of comparative example 9-12；
Following table is that the battery of the electrolyte of comparative example 9-17 is tested according to the test condition of above-mentioned high temperature cyclic performance
The obtained high temperature cyclic performance data at 55 DEG C.
By above-mentioned test experiments it can be found that the nickelic tertiary cathode material battery using electrolyte of the invention can
It is worked normally in voltage > 4.2V or more high voltage range, especially the cyclicity under hot conditions.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of electrolyte suitable for the high nickel power battery of high voltage, including lithium salts, organic solvent and additive, feature exist
In: the organic solvent is the mixture of non-fluorinated cyclic carbonate and fluorine-containing chain ester, and the additive is additive A
And/or the combination of additive B and other additives；
Wherein, the fluorine-containing chain ester is selected from one of substance shown in following general structure or a variety of:Wherein, R1、R2It independently is unsubstituted or alkyl that the carbon atom number that is replaced by fluorine atoms is 1~3
And R1、R2In at least one be the alkyl that the carbon atom number being replaced by fluorine atoms is 1~3, wherein it is described to be taken by fluorine atom
Replace on behalf of part or all replaces；
The additive A is selected from one of substance shown in following general structure or a variety of:Wherein, R3For-
(CH2)nOr-(CH2)nO-, n are 1~4；
The additive B is selected from one of substance shown in following general structure or a variety of:Wherein, R4、
R5Independently selected from one of methoxyl group, ethyoxyl, propoxyl group, butoxy；
Other described additives are selected from biphenyl, vinylene carbonate, vinylethylene carbonate, fluorinated ethylene carbonate, ring
One of hexyl benzene, tert-butyl benzene, succinonitrile, double fluorine sulfimide lithiums, ethylene sulfite are a variety of.
2. electrolyte according to claim 1, it is characterised in that: the non-fluorinated cyclic carbonate is selected from carbonic acid second
Enester, one of propene carbonate, butylene, gamma-butyrolacton, gamma-valerolactone, δ-valerolactone, 6-caprolactone or more
Kind.
3. electrolyte according to claim 1, it is characterised in that: the fluorine-containing chain ester is selected from following structural formula institute
Show one of substance or a variety of:
4. electrolyte according to any one of claim 1 to 3, it is characterised in that: the non-fluorinated cyclic carbonate
The 5%~50% of the organic solvent gross mass is accounted for, the fluorine-containing chain ester accounts for the organic solvent gross mass
50%~95%.
5. electrolyte according to claim 1, it is characterised in that: the additive A is selected from propylene sulfite, Asia
One of sulfuric acid butene esters, 1,3-propane sultone, sulfuric acid vinyl ester are a variety of.
6. electrolyte according to claim 1 or 5, it is characterised in that: the additive A and/or additive B feeds intake
Quality accounts for the 0.1~10% of the electrolyte gross mass, and the quality that feeds intake of other additives accounts for the electrolyte
The 0.1~10% of gross mass.
7. electrolyte according to claim 1, it is characterised in that: the molar concentration of the lithium salts is 0.001~2mol/
L, the lithium salts are selected from LiBF4、LiPF6、LiAsF6、LiClO4、LiN(SO2F)2、LiN(SO2CF3)2、LiN
(SO2C2F5)2、LiSO3CF3、LiC2O4BC2O4、LiFC6F5BC2O4、Li2PO2F2, one of LiBOB, LiODFB or a variety of.
8. a kind of high nickel power battery of high voltage, it is characterised in that: it uses electrolysis described in any one of claims 1 to 7
Liquid, wherein the high voltage is >=4.2V, nickelic mass content >=30% for nickel.
9. the high nickel power battery of high voltage according to claim 8, it is characterised in that: the nickelic power electric of the high voltage
The positive electrode in pond is LiNixAyBZO2, wherein A, B independently are in Co, Mn, Al, Fe, V, Mg, Sr, Ti, Ca, Zr, Zn, Si
One kind, x+y+z=1, X >=0.5,0≤y≤0.5,0≤z≤0.5；Negative electrode material is carbon material, alloy material, metal material
One of material, carbon silicon materials, carbon earth silicon material, oxidation of coal Asia silicon materials, carbon tin material, oxidation of coal tin material.
10. the high nickel power battery of high voltage according to claim 9, it is characterised in that: the negative electrode material is artificial
One of graphite, natural graphite, carbonaceous mesophase spherules, hard carbon, soft carbon.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429336A (en) * | 2019-07-24 | 2019-11-08 | 江苏国泰超威新材料有限公司 | A kind of nonaqueous electrolytic solution and lithium ion battery |
| CN110620262A (en) * | 2019-08-09 | 2019-12-27 | 松山湖材料实验室 | High-voltage lithium ion battery flame retardant, electrolyte and battery |
| US20200335825A1 (en) * | 2018-01-12 | 2020-10-22 | Solvay Sa | Non-aqueous electrolyte compositions comprising lithium bis(fluorosulfonyl)imide |
| CN115275407A (en) * | 2022-09-30 | 2022-11-01 | 北京金羽新材科技有限公司 | Charging method of nickel-zinc battery |
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