CN220604716U - Lithium ion secondary battery - Google Patents
Lithium ion secondary battery Download PDFInfo
- Publication number
- CN220604716U CN220604716U CN202223012630.XU CN202223012630U CN220604716U CN 220604716 U CN220604716 U CN 220604716U CN 202223012630 U CN202223012630 U CN 202223012630U CN 220604716 U CN220604716 U CN 220604716U
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- CN
- China
- Prior art keywords
- lithium ion
- secondary battery
- ion secondary
- negative electrode
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 14
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000007773 negative electrode material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000007774 positive electrode material Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 11
- 239000000919 ceramic Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000005543 nano-size silicon particle Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002153 silicon-carbon composite material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present utility model relates to a lithium ion secondary battery comprising: a positive electrode, the surface of which is coated with a first metal oxide; a negative electrode, the surface of which is coated with a porous ceramic material; separating the positive electrode from the negative electrode by a separator, wherein the separator is a resin film with a micropore structure or a non-woven fabric structure; the shell, positive pole, negative pole and baffle all set up on the shell, just the shell is formed with the positive pole space and the negative pole space that supply positive pole and the packing electrolyte that the negative pole is located for the baffle separates. Since the lithium ion secondary battery of the present utility model can store and release lithium ions and contains porous ceramic particles holding an electrolyte in a negative electrode, the electrolyte is not discharged during charging, lithium ion conduction in the negative electrode can be maintained even during repeated charging and discharging, and deterioration in the performance of the secondary battery can be suppressed.
Description
Technical Field
The utility model relates to the field of lithium ion batteries, in particular to a lithium ion secondary battery.
Background
Among the devices currently being produced, the device with the highest energy density is a lithium ion secondary battery (broadly, a lithium secondary battery) in which a carbon material such as graphite is used for the negative electrode and a compound of lithium and a transition metal is used for the positive electrode. However, in this lithium ion secondary battery, since the negative electrode is made of a carbon material, at most 1/6 of lithium atoms can be inserted per carbon atom theoretically. Therefore, it is difficult to further increase the capacity, and a new electrode material for increasing the capacity needs to be found.
Patent document 1 (japanese patent application laid-open No. 2016225207) proposes a method of gelling a mixture containing silica sol formed by hydrolysis of silicate, particulate carbon, and the above-mentioned silicon-containing particles, performing a hydrothermal treatment, drying and firing, and pulverizing to obtain a composition for a negative electrode active material. However, the composition for a negative electrode active material obtained in patent document 1 is a particle obtained by compositing silica gel, carbon fine particles and silicon-containing particles, and the composition for a negative electrode active material is likely to disintegrate due to volume expansion during charging, because of the cost increase caused by the compositing step and problems such as a relatively large silicon-containing particle diameter and a large silicon dioxide content.
In patent document 2 (japanese patent application laid-open No. 2015503185), a porous electrode composed of silica and carbon is used as a raw material, and silica is produced by electrochemical reduction by a molten salt electrolysis method, and the porous electrode contains carbon as a matrix, nano silicon dispersed on carbon as a matrix, and nano silicon carbide SiC dispersed on an interface between carbon as a matrix and nano silicon, thereby obtaining a nano silicon-carbon composite material containing silicon oxide SiOx (0 < x.ltoreq.2) covering a nano silicon surface other than the interface where nano silicon and carbon are connected. However, this method requires high-temperature treatment during production, and has problems that the cost is high and the capacity density is lower than Si because SiC which does not participate in charge and discharge and SiOx which reduces charge and discharge efficiency by irreversible reaction are contained in the product.
Disclosure of Invention
The utility model provides a lithium ion secondary battery, which can solve the problem that electrolyte held in the pore parts of porous ceramic particles is discharged due to silicon-containing particles which are stored and alloyed with lithium and expand in volume during charging. The present utility model provides a lithium ion secondary battery comprising: a positive electrode, the surface of which is coated with a first metal oxide; the surface of the negative electrode is coated with a porous ceramic material; a separator that separates the positive electrode from the negative electrode, the separator being a resin film having a microporous structure or a nonwoven fabric structure; the shell, positive pole, negative pole and baffle all set up on the shell, just the shell is formed with the positive pole space and the negative pole space that supply positive pole and the packing electrolyte that the negative pole is located for the baffle separates.
Optionally, the positive electrode material is one of aluminum, nickel, iron, stainless steel, and titanium.
Alternatively, the first metal oxide is a composite metal oxide composed of Li and one of oxides of Al, zr, mg, ca, la.
Optionally, the negative electrode material is one of copper, stainless steel, titanium and nickel.
Optionally, the negative electrode is plate-shaped.
Optionally, the separator material is one of polyethylene, polypropylene, polyimide, polyamideimide, and cellulose.
Optionally, the surface of the separator is covered with a layer of a second metal oxide.
Optionally, the second metal oxide is one of alumina, zirconia and titania.
The beneficial effects of the utility model are as follows: since the porous ceramic particles holding the electrolyte are contained in the negative electrode of the present utility model, the electrolyte held in the pores of the porous ceramic particles is discharged because there are no silicon-containing particles capable of occluding and alloying lithium ions and expanding in volume during charging, and lithium ion conduction in the negative electrode can be maintained even during repeated charging and discharging, and deterioration in the performance of the secondary battery can be suppressed.
Drawings
Fig. 1 is a schematic plan view of a lithium ion secondary battery of the present utility model;
1. negative electrode, separator 2, positive electrode 3.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present embodiment provides a lithium ion secondary battery, referring to fig. 1, including: a positive electrode 3, wherein the surface of the positive electrode 3 is coated with a first metal oxide 3-1; the negative electrode 1, wherein the surface of the negative electrode 1 is coated with a porous ceramic material 1-1; a separator 2 separating the positive electrode 3 and the negative electrode 1, the separator 2 being a resin film having a microporous structure or a nonwoven fabric structure; the shell 4, the positive electrode 3, the negative electrode 1 and the separator 2 are all arranged on the shell 4, and the shell 4 is formed with a positive electrode space and a negative electrode space which are filled with electrolyte and used for separating the separator 2 and are used for the positive electrode 3 and the negative electrode 1.
In some embodiments, the positive electrode 3 is made of a material that is highly conductive and inert to the cell reaction, and the inert material is aluminum, nickel, iron, stainless steel, titanium, or the like, and as a more preferable material, aluminum that is inexpensive and low in resistance is used.
In some embodiments, the first metal oxide 3-1 is a composite metal oxide composed of Li and one of oxides of Al, zr, mg, ca, la and the like.
In some embodiments, the negative electrode 1 material is one of copper, stainless steel, titanium, nickel.
In some embodiments, the negative electrode 1 is shaped like a plate, and the thickness of the plate has no specific value in a practical range, and is in a form called "foil" having a thickness of about 5 μm to 100 μm. Further, as the plate shape, for example, a mesh shape, a sponge shape, a fibrous shape forming member, a punched metal, a metal foil having three-dimensional concave-convex patterns formed on both front and back surfaces, a steel plate mesh, or the like may be used.
In some embodiments, the porous ceramic material 1-1 is an oxide composed of at least one or more elements of silicon, aluminum, magnesium, titanium, zirconium, etc., preferably an oxide composed of elements of silicon, aluminum, titanium, etc., the oxide particles having a lithium element to facilitate lithium ion conduction; this allows the battery to maintain a high storage capacity and to have a long charge-discharge cycle life.
In some embodiments, the separator 2 material may be polyethylene, polypropylene, polyimide, polyamideimide, cellulose, or the like.
In some embodiments, in order to improve heat resistance, the surface of the separator 2 is covered with a layer of a second metal oxide 2-1, and the second metal oxide 2-1 is alumina, zirconia, titania, or the like.
The lithium ion secondary battery of the present utility model is a power storage device utilizing a reduction oxidation reaction of lithium ions, and is configured by stacking at least the negative electrode 1 of the present utility model, the lithium ion conductor, and the positive electrode 3 made of a lithium transition metal compound in this order. Specific battery shapes of the battery include, for example, flat, cylindrical, rectangular parallelepiped, and sheet-like. The battery may have a single-layer structure, a multi-layer structure, a spiral structure, or the like.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A lithium ion secondary battery, characterized by comprising:
a positive electrode, the surface of which is coated with a first metal oxide;
the surface of the negative electrode is coated with a porous ceramic material;
a separator that separates the positive electrode from the negative electrode, the separator being a resin film having a microporous structure or a nonwoven fabric structure;
the shell, positive pole, negative pole and baffle all set up on the shell, just the shell is formed with the positive pole space and the negative pole space that supply positive pole and the packing electrolyte that the negative pole is located for the baffle separates.
2. The lithium ion secondary battery according to claim 1, wherein the positive electrode material is one of aluminum, nickel, iron, stainless steel, and titanium.
3. The lithium ion secondary battery according to claim 1 or 2, wherein the negative electrode material is one of copper, stainless steel, titanium, and nickel.
4. The lithium ion secondary battery according to claim 1 or 2, wherein the negative electrode has a plate shape.
5. The lithium ion secondary battery according to claim 1 or 2, wherein the separator material is one of polyethylene, polypropylene, polyimide, polyamideimide, cellulose.
6. The lithium ion secondary battery according to claim 1 or 2, wherein the separator surface is covered with a layer of a second metal oxide.
7. The lithium ion secondary battery according to claim 6, wherein the second metal oxide is one of alumina, zirconia, and titania.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223012630.XU CN220604716U (en) | 2022-11-14 | 2022-11-14 | Lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223012630.XU CN220604716U (en) | 2022-11-14 | 2022-11-14 | Lithium ion secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220604716U true CN220604716U (en) | 2024-03-15 |
Family
ID=90180010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223012630.XU Active CN220604716U (en) | 2022-11-14 | 2022-11-14 | Lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220604716U (en) |
-
2022
- 2022-11-14 CN CN202223012630.XU patent/CN220604716U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |