CN210167437U - Conductive composite electrode negative electrode material of all-solid-state battery - Google Patents
Conductive composite electrode negative electrode material of all-solid-state battery Download PDFInfo
- Publication number
- CN210167437U CN210167437U CN201920890695.3U CN201920890695U CN210167437U CN 210167437 U CN210167437 U CN 210167437U CN 201920890695 U CN201920890695 U CN 201920890695U CN 210167437 U CN210167437 U CN 210167437U
- Authority
- CN
- China
- Prior art keywords
- solid
- negative electrode
- ion conductor
- state
- conductivity type
- 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.)
- Active
Links
Images
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a conductivity type combined electrode negative electrode material of all-solid-state battery, including the negative electrode substrate, the complex is equipped with solid-state ion conductor on at least one side of negative electrode substrate. The utility model discloses a full solid-state battery's conduction type combined electrode negative electrode material is as an organic whole through compounding solid-state ion conductor and negative electrode substrate, so, can effectively guarantee cohesion and the affinity between solid-state ion conductor and the negative electrode substrate to reduce interfacial resistance between solid-state ion conductor and the electrode. When the solid-state ion conductor is used, the solid-state ion conductor is compounded on the cathode base material, and the cathode base material and the solid-state ion conductor of the cathode base material are compounded or fused together, so that the all-solid-state battery can be obtained, the production process can be effectively simplified, the combination degree and the wettability between the solid-state ion conductor and the electrode can be effectively enhanced, and the interface resistance between the solid-state ion conductor and the electrode can be reduced.
Description
Technical Field
The utility model belongs to the technical field of energy storage equipment, specific be a conductivity type combined electrode negative electrode material of all solid-state battery.
Background
Solid state batteries are a battery technology. Unlike lithium ion batteries and lithium ion polymer batteries that are currently in widespread use, a solid-state battery is a battery that uses a solid electrode and a solid electrolyte. The traditional liquid lithium battery is also called as a rocking chair type battery by scientists visually, wherein two ends of the rocking chair are provided with the positive pole and the negative pole of the battery, and the middle part of the rocking chair is provided with electrolyte (liquid). And the lithium ions run back and forth at the two ends of the rocking chair just like excellent athletes, and the charging and discharging process of the battery is completed in the movement process of the lithium ions from the negative electrode to the negative electrode and then to the negative electrode. The principle of the solid-state battery is the same as that of the solid-state battery, but the electrolyte is solid, and the density and the structure of the solid-state battery can enable more charged ions to be gathered at one end to conduct larger current, so that the battery capacity is improved. Therefore, the solid-state battery will become smaller in volume for the same amount of power. Moreover, because the solid-state battery has no electrolyte, the sealing is easier, and when the solid-state battery is used on large-scale equipment such as automobiles, cooling pipes, electronic controls and the like do not need to be additionally arranged, so that the cost is saved, and the weight can be effectively reduced.
Although the existing solid-state battery can meet the use requirements to a certain extent, the following defects still exist:
1) the binding force between the solid-state ion conductor and the electrode is insufficient;
2) the wettability between the solid-state ion conductor and the electrode is poor;
3) the interface resistance between the solid-state ion conductor and the electrode is large.
Disclosure of Invention
In view of this, an object of the present invention is to provide a conductive composite electrode negative electrode material for an all-solid-state battery, which can effectively enhance the binding force and wettability between a solid-state ion conductor and an electrode, and can effectively reduce the interfacial resistance between the solid-state ion conductor and the electrode, thereby improving the ion permeability.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a conductive composite electrode cathode material of an all-solid-state battery,
the composite cathode comprises a cathode substrate, wherein a solid ion conductor is arranged on at least one side face of the cathode substrate in a compounding manner.
Furthermore, a groove is formed in the side face, provided with the solid-state ion conductor, of the negative electrode substrate, and one side, facing the negative electrode substrate, of the solid-state ion conductor is embedded into the groove.
Further, the width of the groove is gradually increased along the direction of the groove bottom pointing to the notch.
Furthermore, the side surface of the cathode substrate, on which the solid-state ion conductor is arranged, is provided with embedded holes in an array mode, and one side, facing the cathode substrate, of the solid-state ion conductor is embedded into the embedded holes.
Furthermore, in any two radial sections which are perpendicular to the axis of the embedding hole and are cut on the same embedding hole, the geometric dimension of the radial section close to the bottom side of the embedding hole is smaller than or equal to that of the radial section close to the hole opening side of the embedding hole.
Further, the negative electrode base material (10) is made of, but not limited to, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide or silicon simple substance.
Further, the solid ion conductor is made of one of gel, oxide, sulfide and organic polymer.
Further, the negative electrode substrate is made of a mixture of a negative electrode active material and a solid ion conductor material.
Further, the molar ratio between the solid ion conductor material and the negative electrode active material is less than or equal to 100%
Further, the negative electrode active material is uniformly distributed in a granular shape, and the solid ion conductor material is filled in gaps of the negative electrode active material granules.
The beneficial effects of the utility model reside in that:
the utility model discloses a full solid-state battery's conduction type combined electrode negative electrode material is as an organic whole through compounding solid-state ion conductor and negative electrode substrate, so, can effectively guarantee cohesion and the affinity between solid-state ion conductor and the negative electrode substrate to reduce interfacial resistance between solid-state ion conductor and the electrode. When the solid-state ion conductor is used, the solid-state ion conductor is compounded on the negative electrode base material, and the solid-state ion conductor of the negative electrode base material are compounded or fused together, so that the all-solid-state battery can be obtained, the production process can be effectively simplified, the combination degree and the wettability between the solid-state ion conductor and the electrode can be effectively enhanced, the interface resistance between the solid-state ion conductor and the electrode can be reduced, and the ion permeability can be improved.
The negative electrode is made of a mixture of a negative electrode active material and a solid ion conductor material, and the solid ion conductor material mixed in the negative electrode is communicated with the solid ion conductor compounded on the side surface of the negative electrode in an ion conduction manner, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode is reduced.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
fig. 1 is a schematic structural diagram of a conductive composite electrode negative electrode material of an all-solid-state battery according to an embodiment 1 of the present invention;
FIG. 2 is detail A of FIG. 1;
FIG. 3 is a schematic view of the microstructure of the negative electrode material of this embodiment;
fig. 4 is a position reference diagram before the anode material and the cathode material are compounded;
fig. 5 is a schematic structural view of an all-solid battery obtained by using the conductive composite electrode negative electrode material of the all-solid battery according to the present embodiment;
fig. 6 is a schematic structural view of the conductive composite electrode negative electrode material of the all-solid-state battery according to example 2 of the present invention;
FIG. 7 is detail A of FIG. 5;
fig. 8 is a schematic structural diagram of an all-solid-state battery cell formed by using the negative electrode material and the negative electrode material of the embodiment; specifically, the structure schematic diagram is shown when the negative electrode material and the negative electrode material are separated;
fig. 9 is a schematic structural view of the negative electrode material and the negative electrode material in fig. 7 after being combined together;
fig. 10 is a schematic structural diagram of an all-solid-state battery cell formed by using the negative electrode material of the present embodiment, in which the difference between the number of negative electrode substrates and the number of negative electrode substrates is equal to 1;
fig. 11 is a schematic structural diagram of the case where the number of the negative electrode substrates is equal to the number of the negative electrode substrates in the all-solid-state battery cell formed by using the negative electrode material of the present embodiment.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Example 1
Fig. 1 is a schematic structural diagram of the conductive composite electrode negative electrode material of the all-solid-state battery according to example 1 of the present invention. The conductive composite electrode negative electrode material of the all-solid-state battery of the embodiment comprises a negative electrode substrate 10, and a solid-state ion conductor 11 is compositely arranged on at least one side surface of the negative electrode substrate 10. In this embodiment, the solid ion conductor 11 is provided only on one side surface of the negative electrode base material 10.
Further, a groove 12 is formed in the side face, provided with the solid-state ion conductor 11, of the negative electrode substrate 10, and one side, facing the negative electrode substrate 10, of the solid-state ion conductor 11 is embedded into the groove 12, so that the bonding strength and the wettability between the negative electrode substrate 10 and the solid-state ion conductor 11 can be further enhanced. Specifically, the groove 12 of the present embodiment may be configured in various structures, such as a wave groove, a triangular sawtooth groove, a trapezoidal groove, a V-shaped groove, a rectangular groove, etc. In order to increase the bonding area of the solid ion conductor 11 and the side surface of the negative electrode base material 10, the width of the groove 12 of the present embodiment is gradually increased along the direction from the groove bottom to the notch. The grooves 12 of the present embodiment are provided as wave grooves. By arranging the groove 12 on the negative electrode base material 10, the bonding strength and the wettability between the negative electrode base material 10 and the solid-state ion conductor 11 can be effectively enhanced, and the interface resistance between the negative electrode base material 10 and the solid-state ion conductor 11 can be reduced.
In addition, embedding holes may be arranged in an array on the side of the negative electrode substrate 10 where the solid-state ion conductors 11 are arranged, and the side of the solid-state ion conductors 11 facing the negative electrode substrate 10 is embedded in the embedding holes. Specifically, in two radial sections obtained by cutting any two radial sections perpendicular to the axis of the embedding hole on the same embedding hole, the geometric dimension of the radial section close to the bottom side of the embedding hole is smaller than or equal to that of the radial section close to the hole opening side of the embedding hole. The embedding hole can adopt various structures, such as a conical embedding hole, a square conical embedding hole, a horn mouth-shaped embedding hole and the like, and the description is not repeated.
Specifically, in some embodiments, the groove 12 or the insertion hole may be provided only on the side of the negative electrode substrate 10 on which the solid-state ion conductor 11 is provided, or the groove 12 and the insertion hole may be provided on the side of the negative electrode substrate 10 on which the solid-state ion conductor 11 is provided.
Further, the negative electrode substrate 10 of the present embodiment is made of, but not limited to, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide, or silicon. The solid ion conductor 11 of the present embodiment is made of one or a mixture of at least two of gel, oxide, sulfide, and organic polymer.
Further, the negative electrode substrate 10 is made of a mixture of a negative electrode active material 14 and a solid ion conductor material 15. And the molar ratio between the solid ion conductor material and the negative electrode active material in the negative electrode substrate is less than or equal to 100%. On the microstructure, the negative active material is uniformly distributed in the form of particles, and gaps of the negative active material particles are filled with a solid ion conductor material, as shown in fig. 3. The negative electrode is made of a mixture of a negative electrode active material and a solid ion conductor material, and the solid ion conductor material mixed in the negative electrode is communicated with the solid ion conductor compounded on the side surface of the negative electrode in an ion conduction manner, so that the ion permeability can be effectively improved, and the interface resistance between the solid state and the electrode is reduced.
The solid ion conductor material 15 of the present embodiment is the same as the solid ion conductor 11, and of course, the solid ion conductor material 15 may be different from the solid ion conductor 11, as long as the wettability between the solid ion conductor 11 and the negative electrode substrate 10 can be enhanced, the interfacial resistance between the solid ion conductor 11 and the negative electrode substrate 10 can be reduced, and the ion permeability can be increased.
Fig. 4 is a schematic structural diagram of an all-solid battery cell obtained by using the conductive composite electrode negative electrode material of the all-solid battery and the conductive composite electrode positive electrode material of the all-solid battery in this embodiment. Specifically, the conductive composite electrode positive electrode material of the all-solid-state battery comprises a positive electrode base material 20, a solid-state ion conductor 21 is composited on the positive electrode base material 20, and the solid-state ion conductor 11 arranged on the negative electrode base material 10 and the solid-state ion conductor 21 arranged on the positive electrode base material 20 are composited or fused together to obtain the all-solid-state battery, as shown in fig. 5.
The conductive composite electrode negative electrode material of the all-solid-state battery is compounded into a whole by compounding the solid-state ion conductor and the negative electrode substrate, so that the binding force and the wettability between the solid-state ion conductor and the negative electrode substrate can be effectively ensured, and the interface resistance between the solid-state ion conductor and the electrode is reduced. When the solid-state ion conductor is used, the solid-state ion conductor is compounded on the cathode base material, and the cathode base material and the solid-state ion conductor of the cathode base material are compounded or fused together, so that the all-solid-state battery can be obtained, the production process can be effectively simplified, the combination degree and the wettability between the solid-state ion conductor and the electrode can be effectively enhanced, and the interface resistance between the solid-state ion conductor and the electrode can be reduced.
Example 2
Fig. 6 is a schematic structural view of the conductive composite electrode negative electrode material of the all-solid-state battery according to example 1 of the present invention. The conductive composite electrode negative electrode material of the all-solid-state battery of the embodiment comprises a negative electrode substrate 10, and a solid-state ion conductor 11 is compositely arranged on at least one side surface of the negative electrode substrate 10. In this embodiment, the solid ion conductors 11 are respectively disposed on both side surfaces of the negative electrode base 10.
Other structures of this embodiment are the same as those of embodiment 1, and will not be described in detail.
Fig. 8 is a schematic structural diagram of an all-solid battery cell obtained by using the conductive composite electrode negative electrode material of the all-solid battery and the conductive composite electrode negative electrode material of the all-solid battery according to the embodiment. Specifically, the conductive composite electrode negative electrode material of the all-solid-state battery comprises a negative electrode substrate 20, a solid-state ion conductor 21 is compounded on the negative electrode substrate 20, and the conductive composite electrode negative electrode material of the all-solid-state battery are compounded in a staggered mode, namely the solid-state ion conductor 11 arranged on the negative electrode substrate 10 and the solid-state ion conductor 21 arranged on the adjacent negative electrode substrate 20 are compounded or fused together, so that the all-solid-state battery can be obtained.
The conductive composite electrode negative electrode material of the all-solid-state battery in the embodiment can form all-solid-state battery cells with various structures:
as shown in fig. 9, the configuration is schematically illustrated in the case where the relationship M — N is 1 between the number N of negative electrode substrates 10 and the number M of positive electrode substrates 20, and specifically, the number of negative electrode substrates 10 and the number of positive electrode substrates 20 in the illustration are 1 and 2, respectively.
As shown in fig. 10, the configuration is schematically illustrated in the case where the relationship N — M is 1 between the number N of negative electrode substrates 10 and the number M of positive electrode substrates 20, specifically, the number of negative electrode substrates 10 is 3 and the number of positive electrode substrates 20 is 2 in the illustration, and the two negative electrode substrates 10 located at both ends have the configuration in example 1.
As shown in fig. 11, the configuration is schematically illustrated in the case where the relationship N ═ M is satisfied between the number N of negative electrode base materials 10 and the number M of positive electrode base materials 20, specifically, the number of negative electrode base materials 10 in the illustration is 3, the number of positive electrode base materials 20 is 3, and one negative electrode base material 10 located at one end of the negative electrode base materials is the configuration in example 1.
Other structures of this embodiment are the same as those of embodiment 1, and will not be described in detail.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (9)
1. The conductive composite electrode negative electrode material of the all-solid-state battery is characterized in that:
the cathode comprises a cathode substrate (10), wherein a solid-state ion conductor (11) is arranged on at least one side face of the cathode substrate (10) in a compounding mode.
2. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 1, characterized in that:
the side face, provided with the solid ion conductor (11), of the negative electrode base material (10) is provided with a groove (12), and one side, facing the negative electrode base material (10), of the solid ion conductor (11) is embedded into the groove (12).
3. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 2, characterized in that:
the width of the groove (12) is gradually increased along the direction of the groove bottom pointing to the groove opening.
4. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 1, characterized in that:
the side face, provided with the solid ion conductor (11), of the negative electrode base material (10) is provided with embedded holes in an array mode, and one side, facing the negative electrode base material (10), of the solid ion conductor (11) is embedded into the embedded holes.
5. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 4, wherein:
and in two radial sections obtained by cutting any two radial sections perpendicular to the axis of the embedding hole on the same embedding hole, the geometric dimension of the radial section close to one side of the bottom of the embedding hole is smaller than or equal to that of the radial section close to one side of the hole opening of the embedding hole.
6. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 1, characterized in that:
the negative electrode base material (10) is made of, but not limited to, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide or silicon simple substance.
7. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 1, characterized in that:
the solid ion conductor (11) is made of one of gel, oxide, sulfide and organic polymer.
8. The conductivity type composite electrode negative electrode material for all-solid batteries according to any one of claims 1 to 7, characterized in that:
the negative electrode substrate (10) is made of a mixture of a negative electrode active material and a solid ion conductor material.
9. The conductivity type composite electrode negative electrode material for all-solid batteries according to claim 8, characterized in that:
the negative electrode active material is uniformly distributed in a granular shape, and the solid ion conductor material is filled in gaps of the negative electrode active material granules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890695.3U CN210167437U (en) | 2019-06-13 | 2019-06-13 | Conductive composite electrode negative electrode material of all-solid-state battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890695.3U CN210167437U (en) | 2019-06-13 | 2019-06-13 | Conductive composite electrode negative electrode material of all-solid-state battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210167437U true CN210167437U (en) | 2020-03-20 |
Family
ID=70171351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920890695.3U Active CN210167437U (en) | 2019-06-13 | 2019-06-13 | Conductive composite electrode negative electrode material of all-solid-state battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210167437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020249065A1 (en) * | 2019-06-13 | 2020-12-17 | 青岛九环新越新能源科技股份有限公司 | Composite electrode material, cell, laminated cell, composite cell and composite power cell of all-solid-state energy storage device |
-
2019
- 2019-06-13 CN CN201920890695.3U patent/CN210167437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020249065A1 (en) * | 2019-06-13 | 2020-12-17 | 青岛九环新越新能源科技股份有限公司 | Composite electrode material, cell, laminated cell, composite cell and composite power cell of all-solid-state energy storage device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108963317B (en) | Mixed type all-solid-state battery | |
| CN102088086B (en) | Method for preparing high-voltage lithium ion battery anode | |
| CN104900908A (en) | Lithium ion battery with high-rate charge-discharge performance | |
| CN101465416A (en) | High specific capacity composite electrode pole piece for lithium ion battery | |
| CN106356536A (en) | Lithium ion battery negative electrode and preparation method thereof | |
| CN102142532B (en) | Stereo braiding-based carbon sulfur composite electrode for sodium sulfur battery | |
| CN210576347U (en) | All-solid-state composite power energy storage battery cell | |
| CN210692371U (en) | All-solid-state capacitor cell, laminated capacitor cell and composite capacitor cell | |
| CN210167437U (en) | Conductive composite electrode negative electrode material of all-solid-state battery | |
| CN209641734U (en) | A kind of lithium ion battery silicon-carbon cathode pole piece | |
| EP3399584A1 (en) | High-current processing for lithium ion battery having metal-based negative electrode | |
| CN210167438U (en) | Conductive composite electrode positive electrode material of all-solid-state battery | |
| CN210167266U (en) | Conductive composite electrode material of all-solid-state supercapacitor | |
| CN213026226U (en) | Sulfide all-solid-state battery with lithium composite material as negative electrode | |
| CN220627852U (en) | Negative plate, lithium ion battery and electricity utilization device | |
| CN209963173U (en) | All-solid-state battery cell, laminated battery cell and composite battery cell | |
| CN210167439U (en) | Inorganic oxide particle-based electrode and solid-state battery | |
| CN108832135A (en) | Based lithium-ion battery positive plate and lithium ion battery | |
| CN101335366A (en) | Lithium iron phosphate high multiplying polymer battery | |
| CN210692707U (en) | Solid-state battery cell, laminated battery cell and composite power battery cell | |
| CN112086625A (en) | Conductive composite electrode negative electrode material of all-solid-state battery | |
| CN108448110A (en) | Positive electrode active materials, positive electrode, lithium ion battery and its preparation method and application | |
| CN102386440A (en) | High-power high-safety lithium ion secondary battery and preparation method thereof | |
| CN210692370U (en) | Solid-state capacitor cell, laminated capacitor cell and composite power capacitor cell | |
| CN112086293A (en) | Conductive composite electrode material of all-solid-state supercapacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |