CN104979564B - Electrochemical energy storing device - Google Patents
Electrochemical energy storing device Download PDFInfo
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- CN104979564B CN104979564B CN201510274742.8A CN201510274742A CN104979564B CN 104979564 B CN104979564 B CN 104979564B CN 201510274742 A CN201510274742 A CN 201510274742A CN 104979564 B CN104979564 B CN 104979564B
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- energy storing
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- collecting body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of electrochemical energy storing devices：Including positive plate, negative plate, isolation film, electrolyte and seal member, wherein：Positive plate is made of collector and coating, and single side coating layer thickness is h1；Isolation film is arranged between positive plate and negative plate, thickness h2；Then length of string a1≤1.2 × (h1+h2) of the plus plate current-collecting body in overshoot is cut.Use the electrochemical energy storing device of the collector, when abusing (foreign matter puncture battery core), plus plate current-collecting body wire drawing is shorter (being no more than 1.2 × (h1+h2)), without electron channel or a small amount of electron channel between positive plate and negative plate, heat production is less, therefore battery core has higher anti-puncture security performance.
Description
Technical field
The invention belongs to electrochemical energy storing device field, more particularly to a kind of electrochemical energy storing device and preparation method thereof.
Background technology
1991, the creative Carbon Materials that use of Sony Corporation of Japan were lithium ion as lithium ion battery anode material
Field of batteries brings revolutionary variation；Since then, lithium ion battery technology grow rapidly, mobile phone, video camera,
It is largely used above laptop and other portable electronics.Lithium ion battery has many advantages, such as, such as voltage is high, body
Product is small, light weight, memory-less effect higher than ability, pollution-free, self discharge is small, has extended cycle life, and is 21st century ideal
Movable electrical appliances power supply, electric car power supply and electricity storage station electrical storage device.However, electric vehicle (EV) and energy-accumulating power station (ES)
The lithium battery used, single battery core have higher capacity and the volume size of bigger, once fever, ignition can generate seriously
Consequence, thus need better safety.At present, the main path for solving battery core safety issue has：Design safety performance
More reliable core strueture coated ceramic layer and uses polymer dielectric substitution tradition on electrode diaphragm or isolation film
Liquid electrolyte etc..
On electrode diaphragm or isolation film after coated ceramic layer, under abuse situation, ceramic layer can have effective barrier
There is heavy-current discharge heat condition, so as to improve the security performance of battery core in electronic conduction between positive/negative plate；But due to
Ceramic process layer is increased, not only so that manufacture cost increases, but also increase the cost of raw material (ceramics, bonding agent etc.), together
When ceramic layer also add battery core thickness, reduce the energy density of battery core.
Gel-form solid polymer electrolyte is dispersed in carbonate solvent using heavy polymer, passes through polymer segment
Interaction (Van der Waals force, hydrogen bond etc.) between carbonate solvent coats and locks carbonate solvent, is formed a kind of high
The quasi-solid electrolyte of conductivity.Since carbonate molecule is locked by macromolecular chain, there is no trips in gel-form solid polymer electrolyte
The carbonic ester of amorph, thus do not allow to be also easy to produce leakage and bulging phenomenon, it is however generally that relative to liquid electrolyte, polymer gel
Electrolyte is not easy to generate heat and burn, and has better safety.But polymer dielectric at this stage, often reduce electricity
The high rate performance and cryogenic property of core limit answering on the energy storage device that it is used in power-type device and low temperature environment
With.
In view of this, it is necessory to develop a kind of new energy storage device, have both excellent chemical property, security performance with
And low manufacture cost.
Invention content
It is an object of the invention to：In view of the deficiencies of the prior art, a kind of electrochemical energy storing device provided：Including just
Pole piece, negative plate, isolation film, electrolyte and seal member, wherein：Positive plate is made of collector and coating, and single side applies thickness
It spends for h1；Isolation film is arranged between positive plate and negative plate, thickness h2；Then wire drawing of the plus plate current-collecting body in overshoot is cut
Length a1≤1.2 × (h1+h2).Use the electrochemical energy storing device of the collector, when abusing (foreign matter puncture battery core), anode
Collector wire drawing is shorter (being no more than 1.2 × (h1+h2)), leads between positive plate and negative plate without electron channel or a small amount of electronics
Road, heat production is less, therefore battery core has higher anti-puncture security performance.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of electrochemical energy storing device, including positive plate, negative plate, isolation film, electrolyte and seal member, wherein：
Positive plate is made of plus plate current-collecting body and anode coating, and the thickness of single side anode coating is h1；
Isolation film is set between positive plate and negative plate, and the thickness of isolation film is h2；
Length of string a1≤1.2 × (h1+h2) of the plus plate current-collecting body in overshoot is cut；
As a kind of improvement of electrochemical energy storing device of the present invention, a1<(h1+h2).
As a kind of improvement of electrochemical energy storing device of the present invention, a1≤0.8 × (h1+h2).
As a kind of improvement of electrochemical energy storing device of the present invention, the material of the plus plate current-collecting body includes metallic aluminium, gold
Belong at least one of nickel and aluminium alloy, and 3≤30 μm of the thickness h of plus plate current-collecting body；Buffering is additionally provided on plus plate current-collecting body
Layer, buffer layer are set at least one surface of plus plate current-collecting body；The buffer layer refers between overlay and base material
Functional layer, as improved the priming coat of bonding force between collector and overlay, reducing resistance between collector and overlay
Priming coat and the functional layer that is set to improve battery safety between collector and overlay etc..
As a kind of improvement of electrochemical energy storing device of the present invention, the tensile strength of the plus plate current-collecting body is greater than or equal to
50MPa, and the elongation of plus plate current-collecting body is less than or equal to 8%.
As a kind of improvement of electrochemical energy storing device of the present invention, the tensile strength of the plus plate current-collecting body is greater than or equal to
100MPa, and the elongation of plus plate current-collecting body is less than or equal to 6%.
As a kind of improvement of electrochemical energy storing device of the present invention, the anode coating includes positive active material, bonding
Agent and conductive agent, mass ratio relationship are 100:(0.2~15):(0.1~15), and h1 >=10 μm.
As a kind of improvement of electrochemical energy storing device of the present invention, the positive active material includes lithium and cobalt oxides, lithium
Nickel oxide, lithium manganese oxide, oxide/lithium ferrite, lithium-barium oxide, sulphur or sulfide/sulfur compound cathode material, ternary or
At least one of multiple elements design compound and polyanion cathode material；Conductive agent includes conductive black, super conductive charcoal, carbon
At least one of nanotube, Ketjen black and graphene；Bonding agent includes Kynoar, neopelex and butylbenzene rubber
At least one of glue；Polyanion cathode material includes Li2M2XO4(olivine-type), Li2M2XO4(NASICON types),
Li2M2XO5、Li2M2XO6And Li2M2X2O7At least one of.
As a kind of improvement of electrochemical energy storing device of the present invention, the isolation film is PP diaphragms, PE diaphragms, PP/PE are multiple
Close isolation film and the isolation film formed after ceramic processing carried out to above-mentioned three classes isolation film, carry out PVDF processing after formed every
From film or carry out the isolation film formed after ceramics-PVDF processing.
As a kind of improvement of electrochemical energy storing device of the present invention, the electrochemical energy storing device is capacitor, lithium ion
One kind in battery, lithium-sulfur cell, sodium-ion battery or Ni-MH battery.
Compared with prior art, energy storage device of the present invention has the following advantages that：
Firstly, since this energy storage device plus plate current-collecting body has the feature of a1≤1.2 × (h1+h2), in abuse, (foreign matter pierces
Wear battery core) when, plus plate current-collecting body wire drawing is shorter (being no more than 1.2 × (h1+h2)), without electron channel between positive plate and negative plate
Or a small amount of electron channel, heat production is less, therefore battery core has higher anti-puncture security performance.
Secondly, plus plate current-collecting body wire drawing is shorter used in this energy storage device, and intensity is high, to the binding energy of electrode expansion
Power is stronger, therefore deforms less, thickness smaller after the electrochemical energy storing device cycle prepared.
Finally, the energy storage device that the present invention prepares has excellent chemical property；And manufacture of low cost, work
Skill is simple, convenient for industrialized production.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
Comparative example 1
The preparation of positive plate：The tensile strength is selected to be for 180MPa, elongation 3%, the modification aluminium foil that thickness is 12 μm
Plus plate current-collecting body；Using cobalt acid lithium as positive active material, PVDF be bonding agent, S μ pper-P are that conductive agent prepares slurry, wherein,
The mass ratio of positive active material, bonding agent and conductive agent is 96：2：2, anode sizing agent is coated in above-mentioned plus plate current-collecting body
On, the thickness of single side anode coating formed after cold pressing is 19 μm, is prepared into positive plate later, after tested, after being prepared into electrode,
The length of string of plus plate current-collecting body is 70 μm；
The preparation of naked battery core：The isolation film that positive plate, negative plate and thickness are 16 μm is assembled into naked battery core；
The preparation of finished product battery core：Above-mentioned naked battery core is entered into bag (selecting aluminum plastic film as packaging bag), later drying, fluid injection, envelope
It fills, liquid to be electrolysed fully infiltrates after standing, and chemical conversion later, degasification, shaping obtain finished product battery core.
Embodiment 1
With comparative example 1 the difference lies in：The thickness of single side anode coating formed after cold pressing is 42.3 μm.
Remaining is identical with comparative example 1, repeats no more.
Embodiment 2
It is with the part of comparative example 1：The thickness of single side anode coating formed after cold pressing is 54 μm.
Remaining is identical with comparative example 1, repeats no more.
Embodiment 3
With comparative example 1 the difference lies in：The thickness of single side anode coating formed after cold pressing is 71.5 μm.
Remaining is identical with comparative example 1, repeats no more.
Embodiment 4
With comparative example 1 the difference lies in：The thickness of single side anode coating formed after cold pressing is 84 μm.
Remaining is identical with comparative example 1, repeats no more.
Embodiment 5
With embodiment 2 the difference lies in：The thickness of the isolation film selected during assembling is 12 μm.
Remaining is same as Example 2, repeats no more.
Embodiment 6
With embodiment 2 the difference lies in：The thickness of the isolation film selected during assembling is 24 μm.
Remaining is same as Example 2, repeats no more.
Embodiment 7
The preparation of positive plate：It for 50MPa, elongation 8%, the modification aluminium foil that thickness is 30 μm is just to select tensile strength
Pole collector；Using cobalt acid lithium as positive active material, PVDF be bonding agent, S μ pper-P are that conductive agent prepares anode sizing agent,
In, the quality proportioning of positive active material, bonding agent and conductive agent is 92：1：1, anode sizing agent is coated in above-mentioned anode collection
On body, the thickness of single side anode coating formed after cold pressing is 80.5 μm, is prepared into positive plate later, after tested, is prepared into electricity
After extremely, the length of string of plus plate current-collecting body is 116 μm；
The preparation of naked battery core：The isolation film that positive plate, negative plate and thickness are 16 μm is assembled into naked battery core；
The preparation of finished product battery core：Above-mentioned naked battery core is entered into bag (selecting aluminum plastic film as packaging bag), later drying, fluid injection, envelope
It fills, liquid to be electrolysed fully infiltrates after standing, and chemical conversion later, degasification, shaping obtain finished product battery core.
Embodiment 8
The preparation of positive plate：The tensile strength is selected to be for 100MPa, elongation 6%, the modification aluminium foil that thickness is 20 μm
Plus plate current-collecting body；Using cobalt acid lithium as positive active material, PVDF be bonding agent, S μ pper-P are that conductive agent prepares anode sizing agent,
Wherein, the mass ratio of positive active material, bonding agent and conductive agent is 97：1.5：1.5, by anode sizing agent coated in it is above-mentioned just
On the collector of pole, the thickness of single side anode coating formed after cold pressing is 80.5 μm, is prepared into positive plate later, after tested, system
It is standby into after electrode, the length of string of plus plate current-collecting body is 96.5 μm；
The preparation of naked battery core：The isolation film that positive plate, negative plate and thickness are 16 μm is assembled into naked battery core；
The preparation of finished product battery core：Above-mentioned naked battery core is entered into bag (selecting aluminum plastic film as packaging bag), later drying, fluid injection, envelope
It fills, liquid to be electrolysed fully infiltrates after standing, and chemical conversion later, degasification, shaping obtain finished product battery core.
Embodiment 9
The preparation of positive plate：It for 200MPa, elongation 2%, the modification aluminium foil that thickness is 8 μm is just to select tensile strength
Pole collector；Using sulphur carbon complex as positive active material, PVDF be bonding agent, S μ pper-P are that conductive agent prepares slurry, apply
It applies on above-mentioned plus plate current-collecting body, the thickness of single side anode coating formed after cold pressing is 10 μm, is prepared into positive plate later, is passed through
Test, after being prepared into electrode, the length of string of plus plate current-collecting body is 20 μm；
The preparation of naked battery core：The isolation film that positive plate, negative plate and thickness are 12 μm is assembled into naked battery core；
The preparation of finished product battery core：Above-mentioned naked battery core is entered into bag (selecting aluminum plastic film as packaging bag), later drying, fluid injection, envelope
It fills, liquid to be electrolysed fully infiltrates after standing, and chemical conversion later, degasification, shaping obtain finished product battery core.
Gram volume is tested：When preparing anode electrode, anode coating weight is weighed, then calculate active material quality and be calculated as w1；
Volume test is carried out to the battery core of comparative example 1 and embodiment 1-8 by following flow in 35 DEG C of environment：Stand 3min；0.5C is permanent
Current charge is to 4.2V, constant-voltage charge to 0.05C；Stand 3min；0.5C constant-current discharges obtain discharge capacity D0 for the first time to 3.0V；It is quiet
It puts 3min and completes volume test later；Volume test is carried out to the battery core of embodiment 9 by following flow in 35 DEG C of environment：It stands
3min；0.5C constant-current charges are to 2.8V, constant-voltage charge to 0.05C；Stand 3min；0.5C constant-current discharges are put for the first time to 1.6V
Capacitance D0；It stands 3min and completes volume test later；
Active material capacity is played as D0/w1.
Drift bolt is tested：Each embodiment and the battery core of comparative example are completely filled by following flow in 35 DEG C of environment：Stand 3min；
0.5C constant-current charges are to 4.2V (the battery core constant-current charge of embodiment 9 to 2.8V), constant-voltage charge to 0.05C；It is fixed later
In on special drift bolt fixture, using the iron nail of a diameter of 2.5mm, battery core center is passed through with the speed of 10mm/s, counts battery core
It catches fire quantity.
Recycle thickness swelling：It is H1 to test battery core thickness when completely filling first；It is compared in 35 DEG C of environment by following flow
Loop test is carried out compared with example 1 and the battery core of embodiment 1-8：Stand 3min；0.5C constant-current charges are to 4.2V, and constant-voltage charge is extremely
0.05C；Stand 3min；0.5C constant-current discharges obtain discharge capacity D0 for the first time to 3.0V；It stands 3min and completes volume test later,
It repeats the above steps 499 times, battery core is expired fill later, test cell thickness is H2；
It is H1 to test battery core thickness when completely filling first；The battery core of embodiment 9 is carried out by following flow in 35 DEG C of environment
Loop test：Stand 3min；0.5C constant-current charges are to 2.8V, constant-voltage charge to 0.05C；Stand 3min；0.5C constant-current discharges are extremely
1.6V obtains discharge capacity D0 for the first time；It stands 3min and completes volume test later, repeat the above steps 499 times, later by battery core
Man Chong, test cell thickness are H2；
Then battery core thickness swelling=(H2/H1-1) × 100%.
Length of string is tested：The anode pole piece after cold pressing is taken, is fixed on special wire drawing test fixture, it will using cutter
Positive plate is cut off, and in the length that cutter section part, test collector are drawn high along the direction of section, that is, is calculated as length of string.
Battery core test result in table 1, comparative example and embodiment
It can be obtained by comparative example 1 and embodiment 1-8, using the lithium ion battery of the present invention, can significantly improve battery core
Security performance, while the specific capacity for not influencing battery core plays.
It can be obtained by embodiment 9, the similary use of the present invention and lithium-sulfur cell system illustrate the present invention in electrochemical energy storing device
In have universality.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in specific embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (10)
1. a kind of electrochemical energy storing device, including positive plate, negative plate, isolation film, electrolyte and seal member, wherein：
Positive plate is made of plus plate current-collecting body and anode coating, and the thickness of single side anode coating is h1；
Isolation film is set between positive plate and negative plate, and the thickness of isolation film is h2；
It is characterized in that：Length of string a1≤1.2 × (h1+h2) of the plus plate current-collecting body in overshoot is cut；
Buffer layer is additionally provided on plus plate current-collecting body, buffer layer is set at least one surface of plus plate current-collecting body.
A kind of 2. electrochemical energy storing device described in claim 1, which is characterized in that a1<(h1+h2).
A kind of 3. electrochemical energy storing device described in claim 1, which is characterized in that a1≤0.8 × (h1+h2).
4. a kind of electrochemical energy storing device described in claim 1, which is characterized in that the material of plus plate current-collecting body includes metal
At least one of aluminium, metallic nickel and aluminium alloy, and 3≤30 μm of the thickness h of plus plate current-collecting body.
A kind of 5. electrochemical energy storing device described in claim 1-4 any one, which is characterized in that the stretching of plus plate current-collecting body
Intensity is greater than or equal to 50MPa, and the elongation of plus plate current-collecting body is less than or equal to 8%.
6. a kind of electrochemical energy storing device described in claim 5, which is characterized in that the tensile strength of plus plate current-collecting body be more than or
Equal to 100MPa, and the elongation of plus plate current-collecting body is less than or equal to 6%.
7. a kind of electrochemical energy storing device described in claim 1, which is characterized in that anode coating include positive active material,
Bonding agent and conductive agent, and h1 >=10 μm.
8. the electrochemical energy storing device described in a kind of claim 7, which is characterized in that positive active material includes lithium cobalt oxidation
Object, lithium nickel oxide, lithium manganese oxide, oxide/lithium ferrite, lithium-barium oxide, sulphur or sulfide/sulfur compound cathode material and
At least one of polyanion cathode material；Conductive agent include conductive black, super conductive charcoal, carbon nanotube, Ketjen black and
At least one of graphene；Bonding agent includes at least one in Kynoar, neopelex and butadiene-styrene rubber
Kind.
9. a kind of electrochemical energy storing device described in claim 1, which is characterized in that the isolation film for PP diaphragms, PE diaphragms,
PP/PE composite isolated films and after carrying out the isolation film formed after ceramic processing to above-mentioned three classes isolation film, carrying out PVDF processing
The isolation film of formation carries out the isolation film formed after ceramics-PVDF processing.
10. a kind of electrochemical energy storing device described in claim 1, which is characterized in that the electrochemical energy storing device is capacitance
One kind in device, lithium ion battery, lithium-sulfur cell, sodium-ion battery or Ni-MH battery.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183732A (en) * | 2007-12-14 | 2008-05-21 | 山东海霸通讯设备有限公司 | Lithium iron phosphate aluminum shell 3.5 ampere-hour column battery and producing technique thereof |
| US8318345B2 (en) * | 2004-07-29 | 2012-11-27 | Samsung Sdi Co., Ltd. | Electrode assembly and lithium rechargeable battery using the same |
| CN103165863A (en) * | 2012-12-07 | 2013-06-19 | 深圳市海太阳实业有限公司 | Positive pole piece and preparation method thereof and battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11238526A (en) * | 1998-02-20 | 1999-08-31 | Kao Corp | Nonaqueous system secondary battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8318345B2 (en) * | 2004-07-29 | 2012-11-27 | Samsung Sdi Co., Ltd. | Electrode assembly and lithium rechargeable battery using the same |
| CN101183732A (en) * | 2007-12-14 | 2008-05-21 | 山东海霸通讯设备有限公司 | Lithium iron phosphate aluminum shell 3.5 ampere-hour column battery and producing technique thereof |
| CN103165863A (en) * | 2012-12-07 | 2013-06-19 | 深圳市海太阳实业有限公司 | Positive pole piece and preparation method thereof and battery |
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