CN106450430A - Low temperature multiplying power type lithium ion battery - Google Patents
Low temperature multiplying power type lithium ion battery Download PDFInfo
- Publication number
- CN106450430A CN106450430A CN201610933509.0A CN201610933509A CN106450430A CN 106450430 A CN106450430 A CN 106450430A CN 201610933509 A CN201610933509 A CN 201610933509A CN 106450430 A CN106450430 A CN 106450430A
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- Prior art keywords
- ion battery
- lithium ion
- low
- temperature rate
- weight
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Classifications
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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
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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 low temperature multiplying power type lithium ion battery which comprises an anode, a cathode, a diaphragm and an electrolyte, wherein an active substance, a binder and a conductive agent are contained in the anode; synthetic graphite, hard carbon, a conductive agent, a binder and oxalic acid are contained in the cathode; and the active substance is lithium cobalt oxide LiCoO2 or nickel cobalt lithium manganese oxide LiNixCoyMn1-x-yO2. The low temperature multiplying power type lithium ion battery has an excellent discharging property under a low temperature environment.
Description
Technical field
The present invention relates to lithium ion battery, in particular it relates to low-temperature rate lithium ion battery.
Background technology
Lithium ion battery because its energy density is big, voltage platform is high, cycle performance is excellent, be easy to carry and safety and environmental protection and
Receive much concern, be widely used in various product.With scientific and technological progress, the development of society, portable product is towards miniature
Change, intelligent, multifunction development, the increase of product use environment complexity is it is desirable to the battery as energy source has more
Good ambient adaptability.And cryogenic property (low temperature refers generally to less than -10 DEG C) is as a weight considering the battery context suitability
Want index, it appears particularly important.When heavy-current discharge uses at low ambient temperatures, battery polarization increases common batteries, and electric discharge is flat
Platform reduces, and prematurely reaches discharge voltage, leads to discharge capacity of the cell very few or directly can not put electricity.
Content of the invention
It is an object of the invention to provide a kind of low-temperature rate lithium ion battery, this low-temperature rate lithium ion battery can
There is excellent discharge performance at low ambient temperatures.
To achieve these goals, the invention provides a kind of low-temperature rate lithium ion battery, including positive pole, negative pole,
Barrier film and electrolyte；Positive pole contains active substance, binding agent and conductive agent, and negative pole contains Delanium, hard carbon, conductive agent, glues
Knot agent and oxalic acid；Wherein, active substance is lithium and cobalt oxides LiCoO2Or nickel cobalt manganese oxidate for lithium LiNixCoyMn1-x-yO2.
By technique scheme, the present invention passes through the synergism of each material in positive and negative electrode, and then makes this low temperature times
Rate type lithium ion battery has excellent discharge performance at low ambient temperatures, shows the specifically low of this lithium ion battery through detection
Warm nature can be as follows：In the environment of 25 DEG C, 15C multiplying power current discharge, discharge capacity reaches more than the 90% of rated capacity；- 40
At DEG C, with 3-5C multiplying power current discharge, discharge capacity reaches more than the 85% of rated capacity；When 25 DEG C, 0.5C charging/3C electric discharge follows
Ring 1000 times, capability retention is more than 80%；Security performance is good, meets IEC62133 and UN38.3 safety test requirement.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is 15C rate discharge curves figure at 25 DEG C for the lithium ion battery A1 in detection example 1；
Fig. 2 is 3C, 5C rate discharge curves figure at -40 DEG C for the lithium ion battery A1 in detection example 1；
Fig. 3 is the discharge and recharge of lithium ion battery A1 0.5C charging/3C electric discharge at 25 DEG C at -40 DEG C in detection example 1
Cyclic curve figure.
Specific embodiment
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that it is described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of low-temperature rate lithium ion battery, including positive pole, negative pole, barrier film and electrolyte；Positive pole
Containing active substance, binding agent and conductive agent, negative pole contains Delanium, hard carbon, conductive agent, binding agent and oxalic acid；Wherein, live
Property material be lithium and cobalt oxides LiCoO2Or nickel cobalt manganese oxidate for lithium LiNixCoyMn1-x-yO2(x, y are positive number and x+y≤1).
In the positive pole of the present invention, the content of each material can select in wide scope, but so that this low temperature
Rate lithium ion battery has more excellent cryogenic property it is preferable that on the basis of the gross weight of the solidss in positive pole, living
Property material content be 94-95 weight %, the content of binding agent is 0.5-3 weight %, and the content of conductive agent is that 0.5-3 weighs
Amount %.
In the negative pole of the present invention, the content of each material can select in wide scope, but so that this low temperature
Rate lithium ion battery has more excellent cryogenic property, on the basis of the gross weight of the solidss in negative pole, Delanium
Content be 67-81 weight %, the content of hard carbon is 15-25 weight %, and the content of conductive agent is 1-3 weight %, binding agent
Content is 2-5 weight %, and the content of oxalic acid is 0.1-0.4 weight %.
In the positive pole of the present invention, the particle diameter of active substance can select in wide scope, but so that this is low
Warm rate lithium ion battery has more excellent cryogenic property it is preferable that the D of active substance50For 4-8um.
In the positive pole of the present invention, active substance can be pure lithium and cobalt oxides LiCoO2Or nickel cobalt manganese oxidate for lithium
LiNixCoyMn1-x-yO2Or by surface-treated compound, in order to improve further this low-temperature rate lithium from
The cryogenic property of sub- battery is it is preferable that the surface of active substance is processed through overdoping or coating modification.Wherein, doping or
The concrete mode that coating modification is processed can be various, but so that the material of doping or cladding can be with LiCoO2
Or nickel cobalt manganese oxidate for lithium LiNixCoyMn1-x-yO2Preferably compatible, it is highly preferred that the process that doping or coating modification are processed
For：By mixing Mg2+、Al3+、Ga3+Strengthen the stability of positive electrode Deng the little and stable cation of quantivalence, or on surface
The high nano material of the electric conductivity such as coated graphite alkene, CNT strengthens its electric conductivity.
In the present invention, the concrete species of barrier film can select in wide scope, but so that this low temperature multiplying power
Type lithium ion battery has more excellent cryogenic property it is preferable that barrier film is polypropylene or polyethylene ceramic membrane and barrier film table
Face coating is by one layer of nanoscale aluminium sesquioxide material to have microcellular structure.
In the present invention, the concrete species of electrolyte can select in wide scope, but so that this low temperature times
Rate type lithium ion battery has more excellent cryogenic property it is preferable that electrolyte selects vinylene carbonate, fluoro ethylene carbonate
Ester or sulfurous esters compound.
In the positive pole and negative pole of the present invention, the concrete species of binding agent can select in wide scope, but in order to
This low-temperature rate lithium ion battery is made to have more excellent cryogenic property it is preferable that in positive pole with negative pole, binding agent is
Kynoar.
In the positive pole and negative pole of the present invention, the concrete species of conductive agent can select in wide scope, but in order to
This low-temperature rate lithium ion battery is made to have more excellent cryogenic property it is preferable that in positive pole with negative pole, conductive agent is
One or more of carbon black, electrically conductive graphite, acetylene black and CNT.
Hereinafter will be described the present invention by embodiment.
Embodiment 1
Rated capacity is the low-temperature rate lithium ion battery A1 of 5Ah：It is made up of positive pole, negative pole, barrier film and electrolyte.Its
In, positive pole contains (calculating by the percentage by weight of solidss)：98.2%LiCoO2(D50For 5.2um), 0.8% binding agent
PVDF, 1% conductive agent CNT；Negative pole contains (calculating by the percentage by weight of solidss)：74% Delanium, 20% hard carbon,
1.5% conductive agent KS-6,1.5% conductive agent SP, 3% binding agent PVDF, 0.25% oxalic acid；From polyethylene ceramic membrane be every
Film；From the low-temperature electrolyte containing vinylene carbonate, fluorine ethylene carbonate.
Embodiment 2
Rated capacity is the low-temperature rate lithium ion battery A2 of 5Ah：It is made up of positive pole, negative pole, barrier film and electrolyte.Its
In, positive pole contains (calculating by the percentage by weight of solidss)：96%LiCoO2(D50For 7.2um), 2% binding agent PVDF, 2%
Conductive agent CNT；Negative pole contains (calculating by the percentage by weight of solidss)：78% Delanium, 15% hard carbon, 3% conductive agent
SP, 4% binding agent PVDF, 0.15% oxalic acid；It is barrier film from polyethylene ceramic membrane；From containing vinylene carbonate, fluorine
The low-temperature electrolyte of ethylene carbonate.
Embodiment 3
Method according to embodiment 1 carries out being obtained the low-temperature rate lithium ion battery A3 that rated capacity is 5Ah, and institute is different
, by the LiCoO in positive pole2It is changed to LiNi0.4Co0.1Mn0.5O2.
Embodiment 4
Method according to embodiment 1 carries out being obtained the low-temperature rate lithium ion battery A4 that rated capacity is 5Ah, and institute is different
, by the LiCoO in positive pole2It is changed to LiNi0.6Co0.2Mn0.2O2.
Embodiment 5
Method according to embodiment 1 carries out being obtained the low-temperature rate lithium ion battery A5 that rated capacity is 5Ah, and institute is different
, by the LiCoO in positive pole2It is changed to LiNi0.5Co0.2Mn0.3O2.
Embodiment 6
Method according to embodiment 1 carries out being obtained the low-temperature rate lithium ion battery A6 that rated capacity is 5Ah, and institute is different
, LiCoO in positive pole2Have passed through doping treatment, the process of specific doping is：By mixing Mg2+、Al3+And Ga3+'s
Cation.
Embodiment 7
Method according to embodiment 1 carries out being obtained the low-temperature rate lithium ion battery A7 that rated capacity is 5Ah, and institute is different
, LiCoO in positive pole2Have passed through coating modification to process, the process that specific coating modification is processed is：In Surface coating stone
Black alkene and CNT.
Detection example 1
1) detect 15C multiplying power discharging situation at 25 DEG C for the low-temperature rate lithium ion battery A1, concrete outcome is shown in Fig. 1.
2) detect low-temperature rate lithium ion battery A1 3C, 5C multiplying power discharging situation at -40 DEG C, concrete outcome is shown in Fig. 2
(curve of top is 3C rate discharge curves, and the curve of lower section is 5C rate discharge curves).
3) the charge and discharge cycles electric current of 0.5C charging/3C electric discharge at 25 DEG C for the detection low-temperature rate lithium ion battery A1
Situation, concrete outcome is shown in Fig. 3.
By Fig. 1-3, the performance of low-temperature rate lithium ion battery A1 is as follows：In the environment of 25 DEG C, 15C multiplying power
Current discharge, discharge capacity reaches more than the 90% of rated capacity；At -40 DEG C, with 3-5C multiplying power current discharge, discharge capacity reaches
More than the 85% of rated capacity；When 25 DEG C, 0.5C charging/3C discharge cycles 1000 times, capability retention is more than 80%.
In the same manner, according to above-mentioned method, low-temperature rate lithium ion battery A2-A7 is detected；Wherein, the inspection of A2-A5
Survey result to be substantially consistent with the testing result of A1；The testing result of A6-A7 is better than the testing result of A1.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, multiple simple variant can be carried out to technical scheme, this
A little simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (10)
1. a kind of low-temperature rate lithium ion battery is it is characterised in that include positive pole, negative pole, barrier film and electrolyte；Described positive pole
Containing active substance, binding agent and conductive agent, described negative pole contains Delanium, hard carbon, conductive agent, binding agent and oxalic acid；Its
In, described active substance is lithium and cobalt oxides LiCoO2Or nickel cobalt manganese oxidate for lithium LiNixCoyMn1-x-yO2.
2. low-temperature rate lithium ion battery according to claim 1, wherein, with the gross weight of the solidss in described positive pole
On the basis of amount, the content of described active substance is 94-95 weight %, and the content of described binding agent is 0.5-3 weight %, described leads
The content of electric agent is 0.5-3 weight %；On the basis of the gross weight of the solidss in described negative pole, the content of described Delanium
For 67-81 weight %, the content of described hard carbon is 15-25 weight %, and the content of described conductive agent is 1-3 weight %, described viscous
The content of knot agent is 2-5 weight %, and the content of described oxalic acid is 0.1-0.4 weight %.
3. low-temperature rate lithium ion battery according to claim 2, wherein, the D of described active substance50For 4-8um.
4. low-temperature rate lithium ion battery according to claim 2, wherein, the surface of described active substance is through overdoping
Or coating modification is processed.
5. low-temperature rate lithium ion battery according to claim 4, wherein, described doping or coating modification process
Process is：By mixing Mg2+、Al3+Or Ga3+Cation, or in Surface coating Graphene or CNT.
6. the low-temperature rate lithium ion battery according to any one in claim 1-4, wherein, described barrier film is poly- third
Alkene or polyethylene ceramic membrane and the coating of described membrane surface are by one layer of nanoscale aluminium sesquioxide material to have microcellular structure.
7. the low-temperature rate lithium ion battery according to any one in claim 1-4, wherein, described electrolyte is selected
Vinylene carbonate, fluorinated ethylene carbonate or sulfurous esters compound.
8. the low-temperature rate lithium ion battery according to any one in claim 1-4, wherein, described positive pole with negative
In extremely, described binding agent is Kynoar.
9. the low-temperature rate lithium ion battery according to any one in claim 1-4, wherein, described positive pole with negative
In extremely, described conductive agent is one or more of carbon black, electrically conductive graphite, acetylene black and CNT.
10. the low-temperature rate lithium ion battery according to any one in claim 1-4, wherein, described low temperature multiplying power
Type lithium ion battery meets following performance：In the environment of 25 DEG C, 15C multiplying power current discharge, discharge capacity reaches rated capacity
More than 90%；At -40 DEG C, with 3-5C multiplying power current discharge, discharge capacity reaches more than the 85% of rated capacity；When 25 DEG C,
0.5C charging/3C discharge cycles 1000 times, capability retention is more than 80%.
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| CN201610933509.0A CN106450430B (en) | 2016-11-01 | 2016-11-01 | Low-temperature rate lithium ion battery |
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| CN201610933509.0A CN106450430B (en) | 2016-11-01 | 2016-11-01 | Low-temperature rate lithium ion battery |
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| CN106450430B CN106450430B (en) | 2019-11-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060204850A1 (en) * | 2005-02-18 | 2006-09-14 | Ham Yong-Nam | Cathode active material, method of preparing the same, and cathode and lithium battery applying the material |
| US20110262809A1 (en) * | 2008-11-04 | 2011-10-27 | Incorporated National University Iwate University | Non-stoichiometric titanium compound, carbon composite of the same, manufacturing method of the compound, active material of negative electrode for lithium-ion secondary battery containing the compound, and lithium-ion secondary battery using the active material of negative electrode |
| CN102324557A (en) * | 2011-10-08 | 2012-01-18 | 万海电源(烟台)有限公司 | Flexible package lithium ion battery |
| CN103441305A (en) * | 2013-08-27 | 2013-12-11 | 深圳市贝特瑞新能源材料股份有限公司 | Power and energy storage lithium-ion battery and preparation method thereof |
| CN104362346A (en) * | 2014-10-14 | 2015-02-18 | 东莞新能源科技有限公司 | Lithium ion battery |
| CN104466171A (en) * | 2014-12-13 | 2015-03-25 | 西安瑟福能源科技有限公司 | Lithium ion battery for emergency start |
-
2016
- 2016-11-01 CN CN201610933509.0A patent/CN106450430B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060204850A1 (en) * | 2005-02-18 | 2006-09-14 | Ham Yong-Nam | Cathode active material, method of preparing the same, and cathode and lithium battery applying the material |
| US20110262809A1 (en) * | 2008-11-04 | 2011-10-27 | Incorporated National University Iwate University | Non-stoichiometric titanium compound, carbon composite of the same, manufacturing method of the compound, active material of negative electrode for lithium-ion secondary battery containing the compound, and lithium-ion secondary battery using the active material of negative electrode |
| CN102324557A (en) * | 2011-10-08 | 2012-01-18 | 万海电源(烟台)有限公司 | Flexible package lithium ion battery |
| CN103441305A (en) * | 2013-08-27 | 2013-12-11 | 深圳市贝特瑞新能源材料股份有限公司 | Power and energy storage lithium-ion battery and preparation method thereof |
| CN104362346A (en) * | 2014-10-14 | 2015-02-18 | 东莞新能源科技有限公司 | Lithium ion battery |
| CN104466171A (en) * | 2014-12-13 | 2015-03-25 | 西安瑟福能源科技有限公司 | Lithium ion battery for emergency start |
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| CN106450430B (en) | 2019-11-01 |
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Address after: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Patentee after: Jiangsu haisida power supply Co.,Ltd. Patentee after: JIANGSU NEW POWER BATTERY & MATERIAL ENGINEERING TECHNOLOGY RESEARCH CENTER CO.,LTD. Address before: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Patentee before: JIANGSU HIGHSTAR BATTERY MANUFACTURING Co.,Ltd. Patentee before: JIANGSU NEW POWER BATTERY & MATERIAL ENGINEERING TECHNOLOGY RESEARCH CENTER CO.,LTD. |
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