CN214336764U - Low-voltage lithium ion battery - Google Patents
Low-voltage lithium ion battery Download PDFInfo
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- CN214336764U CN214336764U CN202120277268.5U CN202120277268U CN214336764U CN 214336764 U CN214336764 U CN 214336764U CN 202120277268 U CN202120277268 U CN 202120277268U CN 214336764 U CN214336764 U CN 214336764U
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 73
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 49
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003792 electrolyte Substances 0.000 claims abstract description 39
- 239000007773 negative electrode material Substances 0.000 claims abstract description 35
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 22
- 239000011149 active material Substances 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011244 liquid electrolyte Substances 0.000 claims abstract description 18
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000007770 graphite material Substances 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 229910021385 hard carbon Inorganic materials 0.000 claims abstract description 4
- 229910021384 soft carbon Inorganic materials 0.000 claims abstract description 4
- 239000007774 positive electrode material Substances 0.000 claims description 36
- 239000013589 supplement Substances 0.000 claims description 24
- 229910008722 Li2NiO2 Inorganic materials 0.000 claims description 4
- 229910010699 Li5FeO4 Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 claims description 3
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002203 sulfidic glass Substances 0.000 claims description 3
- 229910009178 Li1.3Al0.3Ti1.7(PO4)3 Inorganic materials 0.000 claims description 2
- 229910003405 Li10GeP2S12 Inorganic materials 0.000 claims description 2
- 229910004956 Li10SiP2S12 Inorganic materials 0.000 claims description 2
- 229910010848 Li6PS5Cl Inorganic materials 0.000 claims description 2
- 229910002984 Li7La3Zr2O12 Inorganic materials 0.000 claims description 2
- 229910011201 Li7P3S11 Inorganic materials 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 229910010252 TiO3 Inorganic materials 0.000 claims description 2
- PAHNBNDPQWLRQX-UHFFFAOYSA-N [N].[O].[P].[Li] Chemical compound [N].[O].[P].[Li] PAHNBNDPQWLRQX-UHFFFAOYSA-N 0.000 claims description 2
- 239000010405 anode material Substances 0.000 claims description 2
- 125000005587 carbonate group Chemical group 0.000 claims description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000010406 cathode material Substances 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005034 decoration Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005279 LLTO - Lithium Lanthanum Titanium Oxide Substances 0.000 description 1
- BPKGOZPBGXJDEP-UHFFFAOYSA-N [C].[Zn] Chemical compound [C].[Zn] BPKGOZPBGXJDEP-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000664 lithium aluminum titanium phosphates (LATP) Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910000614 lithium tin phosphorous sulfides (LSPS) Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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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
Abstract
The utility model relates to a low voltage lithium ion battery, including positive material layer, electrolyte layer and the negative material layer that sets gradually between its positive current collector to the negative current collector, active material in the positive material layer is TiNb207The material or the lithium titanate material, the electrolyte layer is a solid electrolyte layer or a liquid film layer consisting of a diaphragm and a liquid electrolyte layer, and the active material in the negative electrode material layer is a graphite material, a silicon carbon material, a hard carbon material, a soft carbon material or a lithium metal material; TiNb in the low-voltage lithium ion battery207The median voltage range of the material or the lithium titanate material is 1.5V-1.8V (vs. Li/Li)+) The utility model discloses a lithium ion battery's cathode material uses it as providing the long-life cathode material of low-voltage, not only has novelty and challenge, makes lithium ion battery have better cycle life simultaneously.
Description
The technical field is as follows:
the utility model belongs to the technical field of the battery technique and specifically relates to a low voltage lithium ion battery.
(II) background technology:
at present, commercial lithium ion batteries mainly comprise lithium iron phosphate batteries, ternary lithium ion batteries, lithium manganate batteries and lithium cobaltate batteries, wherein the voltage platform range of the batteries is between 3.0V and 4.0V, and the batteries are mainly applied to electric automobiles, energy storage base stations and 3C electronic products. Under the condition of not depending on the assistance of an electronic voltage reduction device, a low-voltage lithium ion battery system with a voltage platform below 1.8V has a large market blank.
With the increasing prosperity of the middle-low-end small household appliance market, the demand of rechargeable lithium ion batteries with high energy density, low voltage, long cycle life is obviously improved, the middle-low-end small household appliances still use dry batteries as power supplies at present, and the dry batteries comprise carbon-zinc batteries, alkaline batteries and rechargeable nickel-hydrogen batteries, and are suitable for electric appliances such as electric toothbrushes, flashlights, remote controllers and the like. The electrochemical property of the dry battery determines the voltage range of the dry battery to be about 1.5V, and the voltage determines the circuit design of an electrical appliance manufacturer, so that the low-voltage lithium ion battery has larger market space in the field.
TiNb207The (TNO) and Lithium Titanate (LTO) battery materials are generally used as negative electrode materials in lithium ion batteries because of their low voltage plateau, and there are almost no batteries using these materials as positive electrode materials. The material is coated with carbonThe lithium ion battery has the characteristics of good rate capability and long cycle life, but the material belongs to a lithium-deficient material, and if the lithium ion battery is used as a positive electrode material, the material can be activated only by supplementing lithium ions with the same capacity, so that the lithium ion battery has great innovation and challenge when being used as the positive electrode material. Meanwhile, the battery not only has larger application in middle and low-end small electric appliances, but also has wide prospect in the field of energy storage.
(III) contents of the utility model:
the utility model aims to solve the technical problem that a low voltage lithium ion battery is provided.
The technical scheme of the utility model:
the utility model provides a low voltage lithium ion battery, its anodal mass flow body is including anodal material layer, electrolyte layer and the negative material layer that sets gradually between the negative pole mass flow body, active material in the anodal material layer is TiNb 207The lithium ion battery comprises a (TNO) material or a Lithium Titanate (LTO) material, wherein the electrolyte layer is a solid electrolyte layer or a liquid film layer consisting of a diaphragm and a liquid electrolyte layer, and an active material in the negative electrode material layer is a graphite material, a silicon-carbon material, a hard carbon material, a soft carbon material or a lithium metal material.
Preferably, in the low-voltage lithium ion battery, a lithium supplement material is provided inside the positive electrode material layer or inside the negative electrode material layer.
Preferably, in the low-voltage lithium ion battery, a lithium supplement material layer is provided on the outer side of the positive electrode material layer and/or the negative electrode material layer.
Preferably, in the low-voltage lithium ion battery, the lithium supplement material is passivated lithium powder, lithium nitride, lithium oxide or Li2NiO2Or Li5FeO4。
Preferably, in the low-voltage lithium ion battery, the material of the liquid electrolyte layer is a carbonate-based electrolyte.
Preferably, in the low-voltage lithium ion battery, the material of the solid electrolyte layer is an oxide solid electrolyte, a sulfide solid electrolyte, a gel solid electrolyte, or a polymer solid electrolyte.
Preferably, in the low-voltage lithium ion battery, the oxide solid electrolyte is Li7La3Zr2O12(LLZO), lithium phosphorus oxygen nitrogen (LiPON), Li1.3Al0.3Ti1.7(PO4)3(LATP) or Li0.34La0.567TiO3(LLTO); the sulfide solid electrolyte is Li7P3S11(LPS)、Li10GeP2S12(LGPS)、Li10SiP2S12(LSPS) or Li6PS5Cl; the gel solid electrolyte is PVDF-HFP group, PVA-CN group or TEGDME G4 group; the polymer solid electrolyte is PEO-based, PVDF-based, PMMA-based or PAN-based.
Preferably, in the low-voltage lithium ion battery, the thickness of the positive electrode material layer is 20 to 800 μm.
Preferably, in the low-voltage lithium ion battery, the electrolyte layer has a thickness of 5 to 50 μm.
Preferably, in the low-voltage lithium ion battery, the thickness of the negative electrode material layer is 2 to 800 μm.
Preferably, in the low-voltage lithium ion battery, the thickness of the lithium supplement material layer is 5 to 150 μm.
The utility model has the advantages that:
the low-voltage lithium ion battery comprises a positive electrode material layer, an electrolyte layer and a negative electrode material layer which are sequentially arranged between a positive electrode current collector and a negative electrode current collector, wherein the TiNb is arranged between the positive electrode current collector and the negative electrode current collector 207The median voltage range of The (TNO) material or the Lithium Titanate (LTO) material is 1.5V-1.8V (vs+) The utility model discloses a lithium ion battery's cathode material uses it as providing the long-life cathode material of low-voltage, not only has novelty and challenge, makes lithium ion battery have better cycle life simultaneously.
The design of mending lithium material, no matter use likepowder to mend lithium material in anodal material layer or negative material layer, still set up in anodal material layer and/or negative material layer outside and mend the lithium material layer, improve the dispersion homogeneity between the material each other, when guaranteeing the surface planarization of anodal material layer or negative material layer, active material in the anodal material layer can effectively be activated, improve low voltage lithium ion battery's energy density, regard as the growth that the lithium dendrite can effectively be restrained as electrolyte layer with solid electrolyte, further improve low voltage lithium ion battery's security and effectively prolong battery life.
(IV) description of the drawings:
fig. 1 is a schematic structural diagram of a low-voltage lithium ion battery according to the present invention;
fig. 2 is another schematic structural diagram of the low voltage lithium ion battery of the present invention;
fig. 3 is another schematic structural diagram of the low voltage lithium ion battery of the present invention;
fig. 4 is another schematic structural diagram of the low voltage lithium ion battery of the present invention;
fig. 5 is another schematic structural diagram of the low voltage lithium ion battery of the present invention.
In the figure: 1-positive electrode material layer 2-electrolyte layer 3-negative electrode material layer
4-lithium supplement material/lithium supplement material layer 5-diaphragm 6-lithium metal material layer
7-liquid electrolyte layer 8-solid electrolyte layer
(V) specific embodiment:
example 1
As shown in fig. 1, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2, and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, wherein an active material in the positive electrode material layer 1 is TiNb207(TNO), and lithium supplement materials 4 are dispersedly arranged in the positive electrode material layer 1, wherein the lithium supplement materials 4 are Li5FeO4The thickness of the positive electrode material layer 1 is 800 μm, the electrolyte layer 2 is a liquid film layer composed of a diaphragm 5 and a liquid electrolyte layer 7, the material of the liquid electrolyte layer 7 is a carbonate-based electrolyte, the thickness of the electrolyte layer 2 is 50 μm, the active material in the negative electrode material layer 3 is a graphite material, and the thickness of the negative electrode material layer 3 is 800 μm. The obtained low-voltage lithium ion batteryWhen the voltage range is 1.5-1.7V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle number is more than 6000, and the capacity retention rate is 80%.
Example 2
As shown in fig. 1, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2, and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, an active material in the positive electrode material layer 1 is Lithium Titanate (LTO), a lithium supplement material 4 is dispersedly arranged in the positive electrode material layer 1, and the lithium supplement material 4 is Li2NiO2The thickness of the positive electrode material layer 1 is 20 μm, the electrolyte layer 2 is a liquid film layer composed of a separator 5 and a liquid electrolyte layer 7, the material of the liquid electrolyte layer 7 is a carbonate-based electrolyte, the thickness of the electrolyte layer 2 is 22 μm, the active material in the negative electrode material layer 3 is a hard carbon material, and the thickness of the negative electrode material layer 3 is 15 μm. When the value voltage range of the obtained low-voltage lithium ion battery is 1.4-1.6V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle frequency is more than 8000, and the capacity retention rate is 80%.
Example 3
As shown in fig. 2, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2, and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, wherein an active material in the positive electrode material layer 1 is TiNb207(TNO), the thickness of the positive electrode material layer 1 is 360 microns, the electrolyte layer 2 is a liquid film layer consisting of a diaphragm 5 and a liquid electrolyte layer 7, the material of the liquid electrolyte layer 7 is a carbonate-based electrolyte, the thickness of the electrolyte layer 2 is 16 microns, the active material in the negative electrode material layer 3 is a silicon-carbon material, a lithium supplement material 4 is dispersedly arranged in the negative electrode material layer 3, the lithium supplement material 4 is passivated lithium powder, and the thickness of the negative electrode material layer 3 is 280 microns. When the value voltage range of the obtained low-voltage lithium ion battery is 1.4-1.7V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle number is more than 5000 times, and the capacity retention rate is 80%.
Example 4
As shown in fig. 2, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2 and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, an active material in the positive electrode material layer 1 is a Lithium Titanate (LTO) material, the thickness of the positive electrode material layer 1 is 200 μm, the electrolyte layer 2 is a liquid film layer composed of a diaphragm 5 and a liquid electrolyte layer 7, the liquid electrolyte layer 7 is a carbonate-based electrolyte, the thickness of the electrolyte layer 2 is 26 μm, the active material in the negative electrode material layer 3 is a soft carbon material, a lithium supplement material 4 is dispersedly arranged in the negative electrode material layer 3, the lithium supplement material 4 is lithium nitride, and the thickness of the negative electrode material layer 3 is 150 μm. When the value voltage range of the obtained low-voltage lithium ion battery is 1.4-1.7V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle frequency is more than 8000, and the capacity retention rate is 80%.
Example 5
As shown in fig. 3, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2, and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, an active material in the positive electrode material layer 1 is a Lithium Titanate (LTO) material, the thickness of the positive electrode material layer 1 is 60 μm, the electrolyte layer 2 is a solid electrolyte layer 8, the material of the solid electrolyte layer 8 is a PVDF-HFP-based gel solid electrolyte, the thickness of the electrolyte layer 2 is 5 μm, the thickness of the negative electrode material layer 3 is a lithium metal material layer 6, and the thickness of the negative electrode material layer 3 is 2 μm. When the value voltage range of the obtained low-voltage lithium ion battery is 1.5-1.6V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle number is more than 5000 times, and the capacity retention rate is 80%.
Example 6
As shown in fig. 4, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2 and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, an active material in the positive electrode material layer 1 is a Lithium Titanate (LTO) material, the thickness of the positive electrode material layer 1 is 30 μm, a lithium supplement material layer 4 is arranged outside the positive electrode material layer 1, the thickness of the lithium supplement material layer is 5 μm, and the material of the lithium supplement material layer 4 is Li5FeO4The electrolyte layer 2 is a liquid film layer consisting of a diaphragm 5 and a liquid electrolyte layer 7, the material of the liquid electrolyte layer 7 is a carbonate-based electrolyte,the thickness of the electrolyte layer 2 was 15 μm, the active material in the negative electrode material layer 3 was a graphite material, and the thickness of the negative electrode material layer 3 was 10 μm. When the value voltage range of the obtained low-voltage lithium ion battery is 1.5-1.6V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle number is more than 5000 times, and the capacity retention rate is 80%.
Example 7
As shown in fig. 5, a low-voltage lithium ion battery includes a positive electrode material layer 1, an electrolyte layer 2, and a negative electrode material layer 3 sequentially arranged between a positive electrode current collector and a negative electrode current collector, an active material in the positive electrode material layer 1 is a Lithium Titanate (LTO) material, the thickness of the positive electrode material layer 1 is 500 μm, the electrolyte layer 2 is a liquid film layer composed of a diaphragm 5 and a liquid electrolyte layer 7, the liquid electrolyte layer 7 is a carbonate-based electrolyte, the thickness of the electrolyte layer 2 is 35 μm, the active material in the negative electrode material layer 3 is a silicon carbon material, a lithium supplement material layer 4 is arranged outside the negative electrode material layer 3, the thickness of the lithium supplement material layer is 150 μm, and the material of the lithium supplement material layer 4 is Li2NiO2The thickness of the anode material layer 3 was 200 μm. When the value voltage range of the obtained low-voltage lithium ion battery is 1.4-1.5V, the electrochemical performance is stable, the 1C/1C charge-discharge cycle number is more than 5000 times, and the capacity retention rate is 80%.
To sum up, the utility model provides a low voltage lithium ion battery is used for lithium ion battery's positive pole with lithium ion battery's the negative pole common material novelty, for lithium ion battery provide stable low voltage, and the circulation is long-lived, the battery security also improves by a wide margin.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A low voltage lithium ion battery, characterized by: the anode current collector and the cathode current collector sequentially comprise an anode material layer and an electrolysis layerThe active material in the positive electrode material layer is TiNb207The material or the lithium titanate material, the electrolyte layer is a solid electrolyte layer or a liquid film layer consisting of a diaphragm and a liquid electrolyte layer, and the active material in the negative electrode material layer is a graphite material, a silicon carbon material, a hard carbon material, a soft carbon material or a lithium metal material.
2. The low voltage lithium ion battery of claim 1, wherein: and a lithium supplement material is arranged inside the positive electrode material layer or inside the negative electrode material layer.
3. The low voltage lithium ion battery of claim 1, wherein: and a lithium supplement material layer is arranged on the outer side of the positive electrode material layer and/or the negative electrode material layer.
4. The low voltage lithium ion battery of claim 2, wherein: the lithium supplement material is passivated lithium powder, lithium nitride, lithium oxide or Li2NiO2Or Li5FeO4。
5. The low voltage lithium ion battery of claim 1, wherein: the material of the liquid electrolyte layer is a carbonate-based electrolyte.
6. The low voltage lithium ion battery of claim 1, wherein: the material of the solid electrolyte layer is an oxide solid electrolyte, a sulfide solid electrolyte, a gel solid electrolyte or a polymer solid electrolyte.
7. The low voltage lithium ion battery of claim 6, wherein: the oxide solid electrolyte is Li7La3Zr2O12Lithium phosphorus oxygen nitrogen, Li1.3Al0.3Ti1.7(PO4)3Or Li0.34La0.567TiO3(ii) a The sulfide solid electrolyteIs Li7P3S11、Li10GeP2S12、Li10SiP2S12Or Li6PS5Cl; the gel solid electrolyte is PVDF-HFP group, PVA-CN group or TEGDME G4 group; the polymer solid electrolyte is PEO-based, PVDF-based, PMMA-based or PAN-based.
8. The low voltage lithium ion battery of claim 1, wherein: the thickness of the positive electrode material layer is 20-800 mu m, and the thickness of the negative electrode material layer is 2-800 mu m.
9. The low voltage lithium ion battery of claim 1, wherein: the thickness of the electrolyte layer is 5-50 μm.
10. The low voltage lithium ion battery of claim 3, wherein: the thickness of the lithium supplement material layer is 5-150 mu m.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114628659A (en) * | 2022-04-18 | 2022-06-14 | 晖阳(贵州)新能源材料有限公司 | Graphite cathode composite material for power battery and preparation method thereof |
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| CN114628659A (en) * | 2022-04-18 | 2022-06-14 | 晖阳(贵州)新能源材料有限公司 | Graphite cathode composite material for power battery and preparation method thereof |
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