CN218101309U - Positive pole piece and battery - Google Patents
Positive pole piece and battery Download PDFInfo
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- CN218101309U CN218101309U CN202222370841.4U CN202222370841U CN218101309U CN 218101309 U CN218101309 U CN 218101309U CN 202222370841 U CN202222370841 U CN 202222370841U CN 218101309 U CN218101309 U CN 218101309U
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- positive electrode
- battery
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- 239000010410 layer Substances 0.000 claims abstract description 121
- 239000011229 interlayer Substances 0.000 claims abstract description 25
- DVATZODUVBMYHN-UHFFFAOYSA-K lithium;iron(2+);manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[Fe+2].[O-]P([O-])([O-])=O DVATZODUVBMYHN-UHFFFAOYSA-K 0.000 claims abstract description 24
- 239000006258 conductive agent Substances 0.000 claims description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical group [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- 102220043159 rs587780996 Human genes 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 description 9
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000010450 olivine Substances 0.000 description 2
- 229910052609 olivine Inorganic materials 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a positive pole piece and a battery, relating to the technical field of batteries; the positive pole piece comprises a current collector and an active interlayer assembly; the active interlayer assembly is arranged on at least one side of the current collector and comprises at least two conducting layers and at least one active layer, one active layer is arranged between every two conducting layers in a clamping mode, and the conducting layer is arranged on one side, away from the current collector, of the active interlayer assembly and on one side, in contact with the current collector, of the active interlayer assembly. According to the positive pole piece, the active layer is clamped by the two conducting layers, the conducting layers are in contact with the current collector, and the conducting layers are in direct contact with electrolyte, so that the positive pole material has higher capacity and a discharging platform, and the problems of poor conducting performance and poor dynamic performance of the lithium iron manganese phosphate battery can be solved. The battery comprises the positive pole piece. Therefore, the battery also has the advantage of higher dynamic performance.
Description
Technical Field
The utility model relates to a battery technology field particularly, relates to a positive pole piece and battery.
Background
Among the discharge properties of various materials having an olivine structure, only lithium iron manganese phosphate (LFMP) can maintain the discharge capacity of lithium iron phosphate (LFP). Therefore, lithium manganese iron phosphate is often considered as an upgraded version of lithium iron phosphate, and on the premise of equivalent material cost, the LFMP has a higher discharge platform, the theoretical energy density is about 20% higher than that of LFP, and the advantages of cost and energy density also enable LFMP to have higher application potential in the future.
However, lithium manganese iron phosphate has poor conductivity and dynamic performance, and loses capacity during charging and discharging, so that lithium manganese iron phosphate cannot completely replace lithium iron phosphate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a positive pole piece and battery, it presss from both sides through two conducting layers and establishes the active layer, and contacts through conducting layer and mass flow body, through conducting layer and electrolyte direct contact, enables the positive pole material and has higher capacity and the platform that discharges, therefore can improve the poor problem of manganese lithium iron phosphate battery electric conductive property and dynamic property.
The embodiment of the utility model is realized like this:
in a first aspect, the utility model provides a positive pole piece, include:
a current collector;
the active interlayer assembly is arranged on at least one side of the current collector and comprises at least two conducting layers and at least one active layer, one active layer is arranged between every two conducting layers in a clamping mode, and the conducting layer is arranged on one side, away from the current collector, of the active interlayer assembly and on one side, in contact with the current collector, of the active interlayer assembly.
In an alternative embodiment, both sides of the current collector are provided with active sandwich components.
In an alternative embodiment, the active sandwich component comprises two conductive layers and one active layer.
In an alternative embodiment, the thickness of the electrically conductive layer on the side of the active sandwich component facing away from the current collector is greater than or equal to the thickness of the electrically conductive layer in contact with the current collector.
In an alternative embodiment, the thickness of the conductive layer on the side of the active sandwich component facing away from the current collector is 2-5 μm; the thickness of the conductive layer of the active interlayer assembly in contact with the current collector is 0.2-2 μm.
In an alternative embodiment, the active layer has a thickness of 20-200 μm.
In an optional embodiment, the active layer is a lithium iron manganese phosphate active layer;
and/or the presence of a gas in the atmosphere,
the conductive layer is a calcium hydroxide conductive layer;
and/or the presence of a gas in the gas,
the current collector is etched aluminum foil or polished aluminum foil.
In an alternative embodiment, the active layer is a lithium iron manganese phosphate active layer, and the lithium iron manganese phosphate particles have a D50=0.4-1.5 μm and a specific surface area of 15-25m 2 /g。
In an alternative embodiment, the conductive layer is a calcium hydroxide conductive layer, and the specific surface area of the conductive agent of the conductive layer is 50 to 70m 2 /g。
In a second aspect, the present invention provides a battery comprising the positive electrode sheet of any one of the preceding embodiments.
The embodiment of the utility model provides an at least possess following advantage or beneficial effect:
the embodiment of the utility model provides a positive pole piece, which comprises a current collector and an active interlayer component; the active interlayer assembly is arranged on at least one side of the current collector and comprises at least two conducting layers and at least one active layer, one active layer is arranged between every two conducting layers in a clamping mode, and the conducting layer is arranged on one side, away from the current collector, of the active interlayer assembly and on one side, in contact with the current collector, of the active interlayer assembly. According to the positive pole piece, the active layer is clamped by the two conducting layers, the conducting layers are in contact with the current collector, and the conducting layers are in direct contact with electrolyte, so that the positive pole material has higher capacity and a discharging platform, and the problems of poor conducting performance and poor dynamic performance of the lithium iron manganese phosphate battery can be solved.
An embodiment of the utility model provides a battery, it includes foretell positive pole piece. Therefore, the battery also has the advantage of higher dynamic performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a first schematic structural diagram of a positive electrode plate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram ii of a positive electrode plate according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of the positive electrode plate according to an embodiment of the present invention.
01-positive pole piece; 10-a current collector; 20-an active sandwich component; 201-a conductive layer; 202-active layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the related art, among the discharge properties of various materials having an olivine structure, only lithium iron manganese phosphate (LFMP) can maintain the discharge capacity of lithium iron phosphate (LFP). Therefore, lithium manganese iron phosphate is often considered as an upgraded version of lithium iron phosphate, and on the premise of equivalent material cost, the LFMP has a higher discharge platform, the theoretical energy density is about 20% higher than that of LFP, and the advantages of cost and energy density also enable LFMP to have higher application potential in the future. However, lithium manganese iron phosphate has poor conductivity and dynamic performance, and loses capacity during charging and discharging, so that lithium manganese iron phosphate cannot completely replace lithium iron phosphate.
In view of this, the present embodiment provides a positive electrode plate and a battery, in which an active layer is sandwiched between two conductive layers, the conductive layers are in contact with a current collector, and the conductive layers are in direct contact with an electrolyte, so that a positive electrode material has a higher capacity and a discharge platform, and thus the problems of poor conductivity and poor dynamic performance of a lithium iron manganese phosphate battery can be solved, and the advantages of the lithium iron manganese phosphate battery can be fully exerted. The structure of the positive electrode sheet and the battery will be described in detail below.
Fig. 1 is a first schematic structural diagram of a positive electrode plate 01 provided in this embodiment. Referring to fig. 1, the present embodiment provides a battery, which includes a case, a positive electrode plate 01, a separator, a negative electrode plate, and an electrolyte. The positive pole piece 01 is as shown in fig. 1, the positive pole piece 01, the diaphragm and the negative pole piece are sequentially stacked and arranged and then are laminated or wound to form a naked battery cell, after the naked battery cell is arranged in the shell, a positive pole lug and a negative pole lug on the naked battery cell are respectively welded with a positive pole column and a negative pole column on the shell, and finally, electrolyte is injected to obtain the battery.
Specifically, the separator may be made of PE or PP, or a composite material of PE and PP. The negative pole piece comprises a negative pole base body and an active material layer arranged on the negative pole base body, and the negative pole base body can be selected from copper foil. And the negative active material layer is obtained by coating the negative active slurry on a negative substrate, drying and cold pressing. The negative active paste includes a negative material, a conductive agent, a binder, a dispersant, and a solvent. Wherein, the negative electrode material can be selected from carbon materials, the conductive agent can be selected from SP, the binder can be selected from SBR, the dispersant can be selected from CMC, the solvent can be selected from N-methylpyrrolidone (NMP), and the negative electrode active slurry contains SP, CMC, SBR =95-97%, 0-1.5%. The compaction density of the negative pole piece can be controlled to be 1.4-1.7g/cm 3 。
Referring again to fig. 1, the positive electrode sheet 01 includes a current collector 10 and an active interlayer member 20. The current collector 10 is selected to be an etched aluminum foil or a polished aluminum foil, the active interlayer assembly 20 is disposed on at least one side of the current collector 10, the active interlayer assembly 20 includes at least two conductive layers 201 and at least one active layer 202, one active layer 202 is sandwiched between every two conductive layers 201, and one side of the active interlayer assembly 20 away from the current collector 10 and one side of the active interlayer assembly in contact with the current collector 10 are both the conductive layers 201. Specifically, the conductive layer 201 is selected from the existing calcium hydroxide conductive layer 201, and the calcium hydroxide conductive layer 201 specifically includes calcium hydroxide, a binder, and a conductive agent, wherein the conductive agent: adhesive agent: calcium hydroxide = (40-50): 45-55: 1-5). The active layer 202 is a material layer obtained by drying and cold pressing after active slurry is coated on the conductive layer 201, and the active slurry includes active particles, a conductive agent, a binder and a solvent. The active particles are LFMP, the conductive agent can be selected from a composite material of SP and CNT, the binder can be selected from PVDF, and the mass ratio of LFMP to CNT to SP to PVDF =93-98%:0-1%:0-1%:0 to 2 percent.
The positive electrode plate 01 is sandwiched by two conductive layers 201 and an active layer 202, so that an enhanced conductive network can be formed between the conductive layers 201 and a conductive agent of the active layer 202. Meanwhile, the conducting layer 201 is in contact with the current collector 10, and the conducting layer 201 is in direct contact with the electrolyte, so that the positive electrode material has higher capacity and a discharging platform, the problems of poor conductivity and poor dynamic performance of the lithium manganese iron phosphate battery can be solved, and the advantages of the lithium manganese iron phosphate battery can be fully exerted.
In this embodiment, the active particles of the positive electrode plate 01 are LiFe x Mn y PO4, wherein x + y =1, so as to fully ensure the dynamic performance and the conductive performance of the battery. In other embodiments, the active particles may also be ternary lithium or lithium iron phosphate, and the embodiments of the present invention are not limited thereto.
It should be noted that, in the present example, the D50=0.4 to 1.5 μm and the specific surface area of the active particles is 15 to 25m 2 The/g active layer 202 is a lithium iron manganese phosphate active layer 202; the specific surface area of the conductive agent of the conductive layer 201 is 50 to 70m 2 (iv) g. The control of the specific surface area can ensure the capacity and the impedance of the battery and further improve the electrochemical performance of the battery.
Fig. 2 is a second schematic structural diagram of the positive electrode plate 01 provided in this embodiment. Referring to fig. 2, in the present embodiment, active interlayer components 20 are disposed on both sides of the current collector 10 of the positive electrode plate 01. The capacity of the battery and the discharge plateau can be fully ensured by providing active sandwich components 20 on both sides.
In detail, in the present embodiment, the active sandwich component 20 includes two conductive layers 201 and one active layer 202. And the thickness of conductive layer 201 on the side of active interlayer assembly 20 facing away from current collector 10 is greater than or equal to the thickness of conductive layer 201 in contact with current collector 10, illustratively, the thickness of conductive layer 201 on the side of active interlayer assembly 20 facing away from current collector 10 is 2-5 μm; the thickness of the conductive layer 201 of the active sandwich component 20 in contact with the current collector 10 is 0.2-2 μm. The thickness of the active layer 202 is 20-200 μm. The number and thickness of the conductive layer 201 and the active layer 202 are limited, so that the capacity and the discharge platform of the battery can be fully guaranteed on the premise of ensuring low cost. Meanwhile, the thickness of the conductive layer 201 on the side of the active interlayer assembly 20 away from the current collector 10 is greater than or equal to the thickness of the conductive layer 201 in contact with the current collector 10, so that the activity of the active layer 202 can be ensured, the overall activity of the battery can be ensured, the charge and discharge performance and the service performance of the battery can be ensured, and the capacity and the discharge platform of the battery can be greatly improved.
Of course, fig. 3 is a schematic structural diagram of the positive electrode plate 01 provided in this embodiment. Referring to fig. 3, each active sandwich component 20 may further include three conductive layers 201 and two active layers 202 as required, and one active layer 202 is disposed between any two adjacent conductive layers 201, as allowed by cost and other conditions. With this arrangement, the capacity and the discharge plateau of the battery can be made sufficient.
Taking the structure of FIG. 2 as an example, the compacted density of the pole piece is controlled to be 2.21-2.7g/cm 3 Preparing four batteries A, B, C, D, preparing a battery E by adopting the same preparation method and preparing a pole piece without the conducting layer 201, and preparing a battery F only adopting one conducting layer 201, wherein the conducting layer 201 is positioned between the active layer 202 and the current collector 10, and testing the discharge capacity performance of the six batteries, wherein the testing temperature is 25 ℃, the testing multiplying power is 1C, the voltage interval is 2.5-4.4V, and the testing results are shown in table 1.
TABLE 1 Battery Performance test results
| Group of | Gram capacity of discharge (mAh/g) | Discharging voltage platform (V) |
| Battery A | 136.8 | 3.51 |
| Battery B | 141.2 | 3.57 |
| Battery C | 143.5 | 3.62 |
| Battery D | 140.1 | 3.54 |
| Battery E | 122.8 | 3.38 |
| Battery F | 129.6 | 3.45 |
According to the data of table 1, the utility model discloses an embodiment can improve the discharge capacity and the discharge voltage platform of battery effectively through adopting composite construction's positive pole piece 01 to can fully guarantee the electrochemical performance and the performance of battery.
The embodiment of the utility model provides a preparation process, theory of operation and beneficial effect of battery introduce in detail below:
when the battery is prepared, the positive pole piece 01 can be prepared firstly, then the positive pole piece 01, the diaphragm and the negative pole piece are laminated or wound to form a naked battery cell, then the naked battery cell is arranged in the shell, the positive pole lug and the negative pole lug of the naked battery cell are respectively welded with the positive pole column and the negative pole column on the shell, and finally, electrolyte is injected. When the positive electrode plate 01 is prepared, active slurry and conductive slurry can be prepared, the conductive slurry is coated on the current collector 10 to form a conductive layer 201, the active slurry is coated on the conductive layer 201 to form an active layer 202, and finally the conductive slurry is coated on the active layer 202 to form another conductive layer 201.
In the above process, the active layer 202 is sandwiched by the two conductive layers 201 of the positive electrode plate 01, the conductive layers 201 are in contact with the current collector 10, and the conductive layers 201 are in direct contact with the electrolyte, so that the positive electrode material has higher capacity and a discharge platform, and the problems of poor conductivity and poor dynamic performance of the lithium iron manganese phosphate battery can be solved.
To sum up, the embodiment of the utility model provides an electric conductive property and the dynamics that can improve the battery effectively, full play lithium iron manganese phosphate battery's advantage.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A positive electrode sheet, comprising:
a current collector;
the active sandwich component sets up in at least one side of the mass flow body, active sandwich component includes two at least conducting layers and at least one active layer, per two it is equipped with one to press from both sides between the conducting layer the active layer, just active sandwich component deviates from one side of the mass flow body and with one side of the contact of the mass flow body is the conducting layer.
2. The positive electrode sheet according to claim 1, characterized in that:
and the active interlayer components are arranged on two sides of the current collector.
3. The positive electrode sheet according to claim 1, characterized in that:
the active sandwich component comprises two of the electrically conductive layers and one of the active layers.
4. The positive electrode sheet according to claim 1, wherein:
the thickness of the conductive layer on the side of the active interlayer assembly facing away from the current collector is greater than or equal to the thickness of the conductive layer in contact with the current collector.
5. The positive electrode sheet according to claim 4, wherein:
the thickness of the conductive layer on the side of the active interlayer assembly facing away from the current collector is 2-5 μm; the thickness of the conductive layer of the active interlayer assembly in contact with the current collector is 0.2-2 μm.
6. The positive electrode sheet according to claim 1, wherein:
the thickness of the active layer is 20-200 μm.
7. The positive electrode sheet according to any one of claims 1 to 6, wherein:
the active layer is a lithium manganese iron phosphate active layer;
and/or the presence of a gas in the gas,
the conducting layer is a calcium hydroxide conducting layer;
and/or the presence of a gas in the gas,
the current collector is an etched aluminum foil or a polished aluminum foil.
8. The positive electrode sheet according to any one of claims 1 to 6, wherein:
the active layer is a lithium manganese iron phosphate active layer, the D50=0.4-1.5 μm of lithium manganese iron phosphate particles, and the specific surface area is 15-25m 2 /g。
9. The positive electrode sheet according to any one of claims 1 to 6, wherein:
the conductive layer is calcium hydroxide conductive layer, and the specific surface area of the conductive agent of the conductive layer is 50-70m 2 /g。
10. A battery comprising the positive electrode sheet according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222370841.4U CN218101309U (en) | 2022-09-06 | 2022-09-06 | Positive pole piece and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222370841.4U CN218101309U (en) | 2022-09-06 | 2022-09-06 | Positive pole piece and battery |
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| Publication Number | Publication Date |
|---|---|
| CN218101309U true CN218101309U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222370841.4U Active CN218101309U (en) | 2022-09-06 | 2022-09-06 | Positive pole piece and battery |
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| Country | Link |
|---|---|
| CN (1) | CN218101309U (en) |
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- 2022-09-06 CN CN202222370841.4U patent/CN218101309U/en active Active
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Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |