Graded pore structure graphene capacitor

Abstract

The utility model discloses a graphene capacitor with a hierarchical pore structure, and belongs to the technical field of graphene capacitors. The graphene capacitor with the hierarchical pore structure comprises the capacitor shell and the separation frames, the number of the separation frames in each group is five, the two groups of separation frames are arranged at the upper end and the lower end of the capacitor shell respectively, and the number of the electrode plates can be conveniently regulated and controlled through the multiple separation frames. According to the utility model, the problems that the pore structure of the existing graphene capacitor cannot be adjusted according to the actual demand and the applicability is poor in the actual use process are solved, the electron conduction path can be optimized through the pore distribution in the porous electrode, and if the continuous conduction of electrons is influenced by the existence of the pores, the graphene capacitor can be applied to the electronic device. The electrode plates with different porosities are selected, so that good ion conduction can be ensured, good electron conduction performance can be maintained, and the electrode can adapt to different working types so as to achieve the optimal use effect.

Description

Technical Field

[0001] The utility model relates to the technical field of graphene capacitors, in particular to a graphene capacitor with a graded pore structure. Background Art

[0002] Graphene capacitors are composed of three parts: electrode material, separator, and electrolyte. The electrode material is one of the key components that determines the performance of structural graphene capacitors. The requirements for electrode materials are high specific surface area, high electrical conductivity, and good thermal and chemical stability.

[0003] Chinese patent publication number CN107195478B discloses a graphene / magnesium phosphate cement structure supercapacitor and its preparation. The supercapacitor comprises graphene electrodes on either side and a magnesium phosphate cement interlayer disposed between the graphene electrodes, wherein the magnesium phosphate cement interlayer is impregnated with a KOH electrolyte. The preparation method comprises preparing the graphene electrodes and the magnesium phosphate cement interlayer, and then impregnating the magnesium phosphate cement interlayer in KOH and sandwiching it between the graphene electrodes to obtain the graphene / magnesium phosphate cement structure supercapacitor. Compared with existing technologies, the electrode material in this patent has a large specific surface area and excellent conductivity, which can significantly improve the specific capacitance of the structure supercapacitor. The interlayer material is also simple to prepare, low-cost, has high porosity and high compressive strength, and improves the electrochemical and mechanical properties of the structure supercapacitor.

[0004] The graphene capacitor of the above patent cannot adjust the pore structure according to actual needs during actual use, and has poor applicability; therefore, it does not meet existing needs. In this regard, we propose a graphene capacitor with a graded pore structure. Utility Model Content

[0005] The purpose of the present utility model is to provide a graphene capacitor with a graded pore structure, which solves the problem of poor applicability of the graphene capacitor proposed in the above background technology, that is, the pore structure cannot be adjusted according to actual needs during actual use.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a graphene capacitor with a hierarchical pore structure, comprising a capacitor housing and spacers, wherein the spacers are provided in two groups, each group having five spacers, and the two groups of spacers are respectively provided at the upper and lower ends of the capacitor housing, wherein the plurality of spacers facilitates the regulation of the number of electrode plates;

[0007] A top-level grading electrode plate is provided above the interior of the separator, and a first intermediate electrode plate, a second intermediate electrode plate, a third intermediate electrode plate and a bottom-level grading electrode plate are provided below the top-level grading electrode plate. The multiple electrode plates are combined to form a graded pore structure.

[0008] Preferably, the upper and lower ends of the capacitor housing are both equipped with connecting plates, an insulating plate is provided on the outside of the connecting plate, and the front and rear ends of the capacitor housing are both fixedly connected with heat dissipation plates, which are protected by the insulating plates and can improve the use effect of the capacitor.

[0009] Preferably, adjustment rods are installed at the four corners of the partition frame, and the four corners of the adjustment rods are provided with integrally formed fastening holes. The adjustment rods pass through the fastening holes and are fixedly connected to the five partition frames. At the upper and lower end electrodes of the capacitor shell, multiple electrode plates are separated by the partition frames. At the same time, multiple partition frames and electrode plates are fixed by the adjustment rods for installation and disassembly.

[0010] Preferably, an integrally formed mounting opening is provided inside the partition frame, and the upper ends of the top-level grading electrode plate, the first intermediate layer electrode plate, the second intermediate layer electrode plate, the third intermediate layer electrode plate and the bottom-level grading electrode plate are all provided with an integrally formed protruding conductive plate, and the protruding conductive plate passes through the mounting opening and is engaged with the partition frame, and the protruding conductive plate and the mounting opening are engaged with each other, thereby maintaining the positional stability of the electrode plate and the partition frame and improving the use effect.

[0011] Preferably, the top graded electrode plate, the first intermediate electrode plate, the second intermediate electrode plate, the third intermediate electrode plate and the bottom graded electrode plate are all bonded to each other via protruding conductive plates, and electrons are conducted via the protruding conductive plates, thereby performing conductive work.

[0012] Preferably, the porosity of the top graded electrode plate is smaller than the porosity of the first intermediate electrode plate, the second intermediate electrode plate and the third intermediate electrode plate, and the porosity of the first intermediate electrode plate, the second intermediate electrode plate and the third intermediate electrode plate is smaller than the porosity of the bottom graded electrode plate. The electrode plates are disassembled and assembled according to needs, and the pore distribution inside the porous electrode can optimize the electron conduction path. If the presence of pores affects the continuous conduction of electrons, electrode plates with different porosities can be selected.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model adopts graded electrode plates and intermediate layer electrode plates for conductive work. The porosity of the multi-layer electrode plates is different. The porous structure significantly increases the effective surface area of ​​the electrode, allowing more active material surfaces to participate in electrochemical reactions, thereby improving the energy density and power density of the battery, helping to form a more stable solid electrolyte interface, and improving the cycle life and safety of the battery.

[0015] 2. At the upper and lower electrodes of the capacitor shell of the present invention, multiple electrode plates are separated by a separator. At the same time, the multiple separators and electrode plates are fixed by adjusting rods to facilitate installation and disassembly. The pore distribution inside the porous electrode can optimize the electron conduction path. If the presence of pores affects the continuous conduction of electrons, by selecting electrode plates with different porosities, it is possible to maintain good electron conduction performance while ensuring good ion conduction, adapt to different working types, and achieve the best use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the front view of the present invention;

[0017] Figure 2 This is an axonometric drawing of the utility model after the partition frame is decomposed;

[0018] Figure 3 For this utility model Figure 2 A partial enlarged view of area A in the middle;

[0019] Figure 4 This is a structural diagram of the separator and electrode plate of the utility model.

[0020] In the figure: 1. Capacitor housing; 101. Connecting plate; 102. Heat sink; 2. Partition frame; 201. Adjusting rod; 202. Fastening hole; 203. Mounting opening; 3. Top-layer graded electrode plate; 301. First intermediate layer electrode plate; 302. Second intermediate layer electrode plate; 303. Third intermediate layer electrode plate; 304. Bottom-layer graded electrode plate; 305. Protruding conductive plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to solve the problem that the existing graphene capacitors cannot adjust the pore structure according to actual needs during actual use and have poor applicability, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0023] A graphene capacitor with a hierarchical pore structure includes a capacitor housing 1 and spacers 2. The spacers 2 are provided in two groups, each group having five spacers 2. The two groups of spacers 2 are respectively provided at the upper and lower ends of the capacitor housing 1. The multiple spacers 2 facilitate the regulation of the number of electrode plates.

[0024] In addition, a top-level grading electrode plate 3 is provided above the interior of the partition frame 2, and a first intermediate layer electrode plate 301, a second intermediate layer electrode plate 302, a third intermediate layer electrode plate 303 and a bottom-level grading electrode plate 304 are provided below the top-level grading electrode plate 3. The multiple electrode plates are combined to form a graded pore structure.

[0025] In addition, the porosity of the top-level graded electrode plate 3 is smaller than the porosity of the first intermediate layer electrode plate 301, the second intermediate layer electrode plate 302 and the third intermediate layer electrode plate 303. The porosity of the first intermediate layer electrode plate 301, the second intermediate layer electrode plate 302 and the third intermediate layer electrode plate 303 is smaller than the porosity of the bottom-level graded electrode plate 304. The electrode plates are disassembled and assembled according to needs. The pore distribution inside the porous electrode can optimize the electron conduction path. If the presence of pores affects the continuous conduction of electrons, electrode plates with different porosities can be selected.

[0026] Specifically, multiple electrode plates are combined to form a graded pore structure, and multiple separators 2 facilitate the regulation of the number of electrode plates. The pore distribution inside the porous electrode can optimize the electron conduction path. If the presence of pores affects the continuous conduction of electrons, by selecting electrode plates with different porosities, it is possible to maintain good electron conduction performance while ensuring good ion conduction, adapt to different working types, and achieve the best use effect.

[0027] In order to solve the problem of inconvenient structure adjustment and poor grading control of pore structure in the actual use of existing graphene capacitors, please refer to Figure 1 - Figure 3 , this embodiment provides the following technical solutions:

[0028] The upper and lower ends of the capacitor housing 1 are both installed with connecting plates 101, and an insulating plate is provided on the outside of the connecting plate 101. The front and rear ends of the capacitor housing 1 are both fixedly connected with heat dissipation plates 102. The insulating plates provide protection, and the heat dissipation plates 102 can improve the use effect of the capacitor.

[0029] In addition, adjusting rods 201 are installed at the four corners of the partition frame 2, and the four corners of the adjusting rods 201 are provided with integrally formed fastening holes 202. The adjusting rods 201 pass through the fastening holes 202 and are fixedly connected to the five partition frames 2. At the upper and lower end electrodes of the capacitor housing 1, the multiple electrode plates are separated by the partition frame 2. At the same time, the multiple partition frames 2 and electrode plates are fixed by the adjusting rods 201 for installation and disassembly.

[0030] In addition, an integrally formed mounting opening 203 is provided inside the partition frame 2, and the upper ends of the top-level grading electrode plate 3, the first intermediate layer electrode plate 301, the second intermediate layer electrode plate 302, the third intermediate layer electrode plate 303 and the bottom-level grading electrode plate 304 are all provided with an integrally formed protruding conductive plate 305. The protruding conductive plate 305 passes through the mounting opening 203 and is embedded in the partition frame 2. The protruding conductive plate 305 and the mounting opening 203 are embedded with each other to maintain the positional stability of the electrode plate and the partition frame 2 and improve the use effect.

[0031] In addition, the top graded electrode plate 3, the first intermediate electrode plate 301, the second intermediate electrode plate 302, the third intermediate electrode plate 303 and the bottom graded electrode plate 304 are all bonded to each other via the protruding conductive plate 305, and electrons are conducted through the protruding conductive plate 305, thereby performing conductive work.

[0032] Specifically, during installation, multiple partition frames 2 and electrode plates are fixed by adjusting rods 201 for easy installation and disassembly, and the protruding conductive plates 305 and the installation openings 203 are interlocked to maintain the positional stability of the electrode plates and the partition frames 2, thereby improving the use effect. Electrons are conducted by the protruding conductive plates 305, thereby performing conductive work. For long-term use, the insulating plates are used for protection, and the heat dissipation plate 102 can improve the use effect of the capacitor.

[0033] Working principle: During installation, multiple partition frames 2 and electrode plates are fixed by adjusting rods 201 for installation and disassembly. The protruding conductive plate 305 and the installation port 203 are interlocked to maintain the position stability of the electrode plate and the partition frame 2, thereby improving the use effect. Multiple electrode plates are combined to form a graded pore structure. Multiple partition frames 2 are convenient for adjusting the number of electrode plates. The pore distribution inside the porous electrode can optimize the electron conduction path. If the presence of pores affects the continuous conduction of electrons, by selecting electrode plates with different porosities, it is possible to maintain good electron conduction performance while ensuring good ion conduction, adapt to different types of work, and achieve the best use effect. Electrons are conducted by protruding conductive plates 305, thereby performing conductive work. For long-term use, protective work is performed by insulating plates. The heat dissipation plate 102 can improve the use effect of the capacitor.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A graphene capacitor with a hierarchical pore structure, comprising a capacitor housing (1) and a separator (2), characterized in that: Two groups of the partition frames (2) are provided, each group of the partition frames (2) is provided with five, and the two groups of the partition frames (2) are respectively provided at the upper end and the lower end of the capacitor housing (1); A top grading electrode plate (3) is provided above the interior of the partition frame (2), and a first intermediate electrode plate (301), a second intermediate electrode plate (302), a third intermediate electrode plate (303) and a bottom grading electrode plate (304) are provided below the top grading electrode plate (3).

2. The graphene capacitor with a hierarchical pore structure according to claim 1, characterized in that: The upper and lower ends of the capacitor housing (1) are both installed with connecting plates (101), an insulating plate is provided outside the connecting plate (101), and the front and rear ends of the capacitor housing (1) are both fixedly connected with heat dissipation plates (102).

3. The graphene capacitor with a hierarchical pore structure according to claim 1, characterized in that: Adjustment rods (201) are installed at the four corners of the partition frame (2), and the four corners of the adjustment rods (201) are provided with integrally formed fastening holes (202). The adjustment rods (201) pass through the fastening holes (202) and are fixedly connected to the five partition frames (2).

4. The graphene capacitor with a hierarchical pore structure according to claim 1, wherein: An integrally formed mounting opening (203) is provided inside the partition frame (2); and an integrally formed protruding conductive plate (305) is provided at the upper ends of the top grading electrode plate (3), the first intermediate electrode plate (301), the second intermediate electrode plate (302), the third intermediate electrode plate (303), and the bottom grading electrode plate (304); the protruding conductive plate (305) passes through the mounting opening (203) and is engaged with the partition frame (2).

5. The graphene capacitor with a hierarchical pore structure according to claim 4, characterized in that: The top grading electrode plate (3), the first intermediate electrode plate (301), the second intermediate electrode plate (302), the third intermediate electrode plate (303) and the bottom grading electrode plate (304) are all bonded to each other via a protruding conductive plate (305).

6. The graphene capacitor with a hierarchical pore structure according to claim 1, characterized in that: The porosity of the top grading electrode plate (3) is smaller than the porosity of the first intermediate electrode plate (301), the second intermediate electrode plate (302) and the third intermediate electrode plate (303), and the porosity of the first intermediate electrode plate (301), the second intermediate electrode plate (302) and the third intermediate electrode plate (303) is smaller than the porosity of the bottom grading electrode plate (304).

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