JP6032684B2 - Electronic component and electronic device - Google Patents

Description

The present invention relates to an electronic component and an electronic device, for example, an electrochemical cell such as an electric double layer capacitor.

An electric double layer capacitor is a device that stores electricity by polarizing ions in an electrolyte and supplies electric power by discharging the ions.
With this storage / discharge function, the electric double layer capacitor is used, for example, for a clock function of an electronic device, a backup power source such as a semiconductor memory, and a standby power source of an electronic device such as a microcomputer or an IC memory.

In particular, a surface-mountable electric double layer capacitor can be reduced in size and thickness, and is suitable for a thin portable terminal.
In order to meet such a demand for downsizing and thinning, in Patent Document 1 below, as described below, a polarizing electrode and an electrolyte are housed in a container having a recess, and the opening is sealed with a sealing plate. Stopped electric double layer capacitors have been proposed.

FIG. 9 is a side sectional view of a conventional electric double layer capacitor 100.
A metal layer 111 is provided on the bottom surface of the ceramic concave container 102 in which the recess 113 is formed, and the positive electrode 106 is joined to the upper surface of the metal layer 111. The metal layer 111 penetrates the concave container 102 and is electrically connected to the positive electrode terminal 112 on the bottom surface of the concave container 102, so that the positive electrode 106 is electrically connected to the positive electrode terminal 112 through the metal layer 111. Connected to.

Further, the sealing plate 103 is bonded to the opening of the recess 113 by the metal bonding metal layer 108 to seal the recess 113.
A metal layer 115 that functions as a current collector is formed on the lower surface of the sealing plate 103, and the negative electrode 105 is bonded to the surface of the metal layer 115.
A metal layer 109 is formed on a side surface of the concave container 102 to connect the bonding metal layer 108 and the negative electrode terminal 110 on the bottom surface of the concave container 102.
The negative electrode 105 is electrically connected to the negative electrode terminal 110 through the metal layer 115, the bonding metal layer 108, and the metal layer 109.

A separator 107 that prevents these short circuits is provided between the negative electrode 105 and the positive electrode 106, and an electrolyte is sealed in the recess 113.
The electric double layer capacitor 100 stores electricity when a voltage is applied to the negative electrode terminal 110 and the positive electrode terminal 112, and discharges the stored electric charge to supply power to the maintenance of a clock function, a memory, or the like.

By the way, the metal layer 111 of the recess 113 is formed of a tungsten layer serving as a base and an aluminum layer formed thereon.
This is due to the following reason. That is, since the metal layer 111 is used as a current collector, it needs to be formed of a material that does not dissolve in the electrolyte even when a voltage is applied. In the case of the positive electrode current collector, such a substance is aluminum, but aluminum cannot withstand the firing temperature of the concave container 102 (preferably 1000 [° C.] or higher).
Therefore, a base is made of titanium that can withstand high temperatures, and after firing the concave container 102, an aluminum layer is formed on the titanium base.

  However, in order to form the aluminum thin film on the bottom surface of the recess 113, it is necessary to use a dry process such as vacuum vapor deposition, and there is a problem that the cost increases.

JP 2001-216852 A

  An object of this invention is to improve productivity, such as an electric double layer capacitor.

(1) In the first aspect of the present invention, a container having a bottom formed of ceramic and having a cavity, and disposed in a direction parallel to a bottom surface of the cavity in the bottom of the container, A first conductor that is electrically connected to the outside of the container on an outer side surface; a through-hole that is formed in the bottom of the container and extends from the bottom surface of the cavity to the first conductor; and a bottom surface in the cavity Oite all surfaces, is supplied shallower than the depth of the entire surface to the cavity of the bottom surface within the cavity, the meniscus around is formed, a conductive paste to the conductive material of carbon were formed by solidifying A first current collector, a first electrode positioned by the concave meniscus formed by the supply of the conductive paste and bonded to the first current collector, the first conductor and the first current collector; Electrically connected to one current collector A through electrode formed by solidifying a conductive paste containing carbon as a conductive material in the through hole, a second conductor that conducts from the cavity to the outside of the container, and the first electrode in the cavity. A second current collector joined to the second conductor, a second electrode joined to the second current collector and facing the first electrode at a predetermined distance, and the first electrode And an electrolyte in contact with the second electrode.
(2) The invention according to claim 2 provides the electronic component according to claim 1, wherein the first electrode is a positive electrode and the second electrode is a negative electrode.
(3) In the invention according to claim 3, the bottom of the container is formed by firing a sheet material on which the ceramics are laminated, and the first conductor is between the laminated layers. The electronic component according to claim 1, wherein the electronic component is provided.
(4) In the invention described in claim 4, the first current collector is formed of a resin using carbon as a conductive material. The electronic component described in 1. is provided.
(5) In the invention according to claim 5, the first current collector is formed in a concave portion formed in the cavity portion. An electronic component according to any one of claims is provided.
(6) In the invention according to claim 6, the first current collector is formed of a member having carbon as a conductive material in a layer shape. An electronic component according to any one of the claims is provided.
(7) In the invention according to claim 7, in the invention according to any one of claims 1 to 6, wherein the second current collector is made of carbon as a conductive material. The electronic component described is provided.
(8) In the invention according to claim 8, the electronic component according to any one of claims 1 to 7, the power storage means for storing power in the electronic component, and a predetermined function There is provided an electronic apparatus comprising: another electronic component to be exhibited; and power supply means for supplying electric power to the other electronic component using the stored charge.

According to the present invention, it is possible to enhance the productivity of the electric double layer capacitor by forming a current collector composed mainly of carbon elements.

It is a figure for demonstrating the electric double layer capacitor which concerns on 1st Embodiment. It is a figure for demonstrating the modification of 1st Embodiment. It is a figure for demonstrating the modification of 1st Embodiment. It is a figure for demonstrating the formation method of the electrical power collector in 1st Embodiment. It is a figure for demonstrating the formation method of the electrical power collector in 1st Embodiment. It is a figure for demonstrating the electric double layer capacitor which concerns on 2nd Embodiment. It is a figure for demonstrating the modification of 2nd Embodiment. It is a figure for demonstrating the formation method of the electrical power collector in 2nd Embodiment. It is a figure for demonstrating a prior art example.

(1) Outline of Embodiment As shown in FIG. 1A, the concave container 2 has a concave portion 13, and a storage portion 17 having a metal layer 11 on the bottom surface is formed at the bottom of the concave portion 13. Has been.
The metal layer 11 is made of tungsten and can withstand the firing temperature of the concave container 2.
A current collector 18 using carbon as a conductive material is formed on the metal layer 11, and an electrode 6 used as a positive electrode is fixed thereon. The current collector 18 and the electrode 6 are formed as follows.

After firing the concave container 2, the reservoir 17 is supplied with a conductive paste containing carbon as a conductive material. The reason why the storage part 17 is provided is that the conductive paste is in a liquid state, so that the storage part 17 collects it at the center of the recess 13 so as not to leak around and cause a short circuit.
Thereafter, the current collector 18 is formed by heating the conductive paste and solidifying the conductive paste. Further, when the electrode 6 is placed on the conductive paste and heated, the conductive paste is solidified and the current collector 18 to which the electrode 6 is fixed is formed.

Generally, there is carbon in addition to aluminum as a material that can be used as a current collector. However, when a conductive paste is supplied and heated on the metal layer 11 as in the present embodiment, the current collector 18 is formed. There is no need to go through a dry process such as vacuum deposition of aluminum.
Therefore, the production cost can be reduced, the production process can be simplified, and the productivity of the electric double layer capacitor 1 can be increased.
When the electrode 6 is placed on the conductive paste, the electrode 6 is positioned at the center of the storage portion 17 due to the surface tension of the conductive paste, so that the positioning of the electrode 6 is simplified, which also improves productivity.

  The viscosity of the conductive paste is about 400 dPa · s, but since the workability is poor, it can be diluted using a low boiling point solvent such as thinner. By this dilution, the viscosity can be reduced to about 40 dPa · s or less. In this way, considering the workability, when the viscosity of the conductive paste is lowered, the conductive paste crawls up the wall surface with a solvent, and the wall surface becomes conductive when dried and solidified in the crawl-up state. In this state, there is a risk of short-circuiting when the electrodes are stacked, but there is an effect of avoiding this.

In addition, an amorphous or crystalline carbonaceous film can be formed by CVD.
For example, after applying a dispersion solution containing nickel-based catalyst particles that are seeds of vapor-grown carbon, drying the solvent, and then heating in a tubular furnace to a temperature of 600 ° C. to 1600 ° C., methane, acetylene, and others Formation is possible by flowing a gas containing hydrocarbons in a reducing atmosphere.
At this time, the vapor-grown carbon to be molded may be single-layer or multi-layer tube-like carbon. Furthermore, the specific surface area can be increased by accelerating the crystallization of the carbonaceous coating by heat treatment or by further activating the carbonaceous coating. At this time, since the electrode 6 and the current collector 18 can be integrally formed, workability is improved.

(2) Details of the embodiment (first embodiment)
An electrochemical cell constituting the electronic component of the present embodiment will be described with reference to the drawings. In the following, an electric double layer capacitor will be described as an example as an embodiment, but the electronic component may be another type of electrochemical cell such as a nonaqueous electrolyte battery.
For example, an electrode sheet composed of silicon oxide activated by metallic lithium (50 wt%), a conductive additive (40 wt%), and a polyacrylic acid binder (20 wt%) is used as the negative electrode, and the positive electrode is used as the positive electrode. And an electrode sheet composed of an active material (85 wt%) having a spinel type crystal structure of lithium-manganese-oxygen, a conductive assistant (10 wt%), and a PTFE binder (5 wt%), A battery made of an electrolytic solution by dissolving a separator made of glass fiber and 1M LiN (SO2CF3) 2 in PC is possible. Here, the size of the positive electrode and the negative electrode can be 1 mm long × 1.5 mm wide × 0.2 mm thick.
In addition to the above positive electrode active material, Li4Ti5O12, Li4Mn5O12, LiCoO2 or the like can also be used. Alternatively, Li—Si—O, Li—AL, or the like can be used as the negative electrode active material.
In addition, a lithium ion battery can be configured by using an electrolytic solution in which 1M LiBF4 is dissolved in PC. At this time, a conductive additive or a binder can be used in combination with each active material.

  FIG. 1A is a side sectional view of the electric double layer capacitor 1 according to the first embodiment. The electric double layer capacitor 1 has a rectangular parallelepiped shape, and the size is, for example, a rectangular parallelepiped having a height of 1 [mm] or less, a length of about 2.5 [mm], and a width of about 3.0 [mm]. It has a shape.

Electric double layer capacitor 1, concave container 2 having a concave portion 13, sealing plate 3 having a metal layer 15 formed on the lower surface (thickness is about 0.1 [mm]), electrode 5 used as a negative electrode Electrode 6 used as positive electrode, separator 7, bonding metal layer 8, metal layer 11, current collector 18, through electrode 21, through electrode 22, terminal 10, terminal 12, and electrolyte enclosed in recess 13 ( (Not shown) or the like.
The terminals 10 and 12 are terminals for surface mounting. In the following description, the terminals 10 and 12 are referred to as the downward direction, and the sealing plate 3 side is referred to as the upward direction.
In FIG. 1A, a gap is illustrated between the electrode 5, the separator 7 and the electrode 6 so that the joining relationship of the members can be easily understood. However, these members may be packed in the recess 13 without any gap. .

The concave container 2 is made of ceramics using alumina, for example, and is formed by stacking and integrating a plurality of flexible ceramic sheet materials 41 to 45 called green sheets. The thickness of each sheet after baking can be 100-300 micrometers. In addition, it is desirable that the thicknesses are the same, because the labor and time for preparing the sheet are reduced. In Fig.1 (a), the junction part of the sheet | seat materials 41-45 is shown with the broken line.
The green sheet has openings corresponding to the recesses 13 and the reservoirs 17 and holes corresponding to the through holes in which the through electrodes 21 and 22 are installed. These green sheets are laminated in the thickness direction and fired. Thereby, the concave container 2 having the concave portion 13 and the through holes for the through electrodes 21 and 22 is formed. Here, the diameter of the through electrode can be about 100 μm. In addition, a conductive printing made of tungsten (W) is applied in advance to the upper surface of each green sheet for the purpose of absorbing errors when the through electrodes and the through electrodes formed in each layer are misaligned when the green sheets are stacked. be able to.

  More specifically, the sheet materials 41 and 42 are formed with through holes corresponding to the shape of the through electrodes 21 and 22, and the sheet material 43 has a through hole and a storage portion corresponding to the shape of the through electrodes 21. An opening corresponding to the shape of the through electrode 21 and an opening corresponding to the shape of the recess 13 are formed in the sheet materials 44 to 45.

The concave portion 13 has a rectangular cross section when viewed from above, and a concave storage portion 17 having a metal layer 11 formed on the bottom surface is formed at the bottom of the concave portion 13.
The metal layer 11 is formed by conducting conductor printing on the surface of the sheet material 42 corresponding to the bottom surface of the storage portion 17 and firing the concave container 2.
Here, the size of the metal layer 11 is reduced to the minimum necessary to reduce the cost. Note that the metal layer 11 may be formed on the entire bottom surface of the reservoir 17.
The conductor printing is performed by screen printing with an ink containing a high melting point metal material that has corrosion resistance such as tungsten and can withstand firing of the concave container 2.

Tungsten is suitable as an electrode to be formed in the recess 13 because it has a high melting point, is difficult to oxidize, has moderate adhesion extremes with the ceramic surface, and has practical electrical resistance after firing.
However, when tungsten is used as a positive electrode current collector, when a voltage is applied in contact with the electrolyte, it dissolves electrochemically in the electrolyte.
Therefore, in order to prevent the elution, it is necessary to cover the entire surface in contact with the electrolyte (that is, all the portions in the concave container 2) with the current collector 18 made of a conductive paste as described below.

In addition, by applying to the entire surface, although it is formed in a meniscus shape along the wall surface of the inner side surface by its own surface tension, it also has the effect of flattening the thickness of the central portion of the liquid paste.
Electrochemically, electrons tend to concentrate at the sharp tip of the conductor. When charging / discharging the electrochemical device, if electrons concentrate on the sharp tip of the conductor, there is a concern that power concentrates only around the tip of the conductor and deterioration is accelerated.
Therefore, by applying the paste of the present invention, it can be expected that the sharp portion is eliminated and the concentration of electrons is eliminated, thereby preventing the deterioration of the electrode.

On the metal layer 11, a current collector 18 obtained by solidifying the conductive paste is formed.
Although the metal layer 11 has a thickness, the current collector 18 having a flat surface is obtained by leveling the thickness of the metal layer 11 with a conductive paste.
As the conductive paste, a paste obtained by processing a phenolic resin containing a carbon material and a solvent into a paste is used. The carbon material is added to impart conductivity. As the carbon material, any of graphite powder, amorphous carbon (carbon black), or a mixture of both can be used.
When the solvent is dried by heating to polymerize (solidify) the phenolic resin component, a resin current collector 18 is formed using the phenolic resin as a binder and carbon as a conductor.

  Here, in general, in the case of a negative electrode current collector, many metals such as nickel, copper, brass, zinc, tin, gold, stainless steel, tungsten, and aluminum can be used, but the positive electrode current collector is used as an electrolyte. In order to prevent the current collector from melting, it is necessary to use a metal called plug metal such as aluminum, titanium, or niobium. As the positive electrode current collector, carbon other than these metals can be used, and in this embodiment, a conductive paste containing a carbon material is used. When a conductive paste is used, it is not necessary to form a plug metal thin film by vacuum deposition or the like, so that the process is greatly simplified.

  The conductive paste is a mixture of graphite, which is highly crystalline among carbons, and amorphous carbon black among carbons, and further contains a phenolic resin as a main component and a binder. For this phenolic resin, an aldehyde represented by formaldehyde and a derivative containing phenol can be used.

The reservoir 17 is formed at the center of the bottom of the recess 13, the depth of the reservoir 17 is set smaller than the thickness of the electrode 6, and the inner periphery of the reservoir 17 is more conductive paste than the outer periphery of the electrode 6. The meniscus 19 is set to be large. The reservoir 17 is provided to prevent the conductive paste from scattering or protruding before solidifying and causing a short circuit.
The reservoir 17 functions as a reservoir for holding the conductive paste formed of the insulating sheet materials 42 and 43.

Here, the meniscus 19 is a concave surface generated on the surface of the conductive paste due to surface tension when the conductive paste is stored in the storage portion 17.
When the electric double layer capacitor 1 is manufactured, when the liquid conductive paste is stored in the storage portion 17 and the electrode 6 is placed on the surface, the meniscus 19 positions the electrode 6 at the center of the storage portion 17.

Thereafter, when the conductive paste is solidified by heating, the current collector 18 is formed and the electrode 6 is fixed at the center of the storage portion 17. That is, since the electrode 6 is fixed to the concave surface formed by the surface tension of the conductive paste, the electrode 6 can be easily and accurately positioned.
As described above, in this embodiment, the formation of the positive electrode current collector does not require a dry process such as vacuum vapor deposition, and the electrode 6 can be easily positioned. Therefore, the manufacturing cost of the electric double layer capacitor 1 is reduced and the productivity is increased. Can be improved.

  The electrode 6 is formed by forming an electrode active material mainly composed of activated carbon into a sheet and cutting it into a rectangle. For example, a natural material is coconut husk, and an artificial material is a coal pitch, petroleum pitch or phenolic material. Resin carbides that are activated with water vapor, chemicals, or electrochemistry are used.

Under the concave portion 13 of the concave container 2, by laminating the sheet materials 41 and 42 having holes as described above, through holes having openings on the bottom surface of the concave portion 13 and the bottom surface of the concave container 2 are formed. Has been.
A cylindrical through electrode 22 that electrically connects the metal layer 11 and the terminal 12 is formed in the through hole.
The outer diameter of the through electrode 22 and the inner diameter of the through hole are set to be the same, and no gap is generated between the through electrode 22 and the inner wall of the through hole. The through electrode is also referred to as VIA.

  The diameter of the through electrode 22 is about 0.1 to 0.3 [mm]. Further, intermediate electrodes 28 are provided by conductor printing between the layers of the respective sheet materials. For example, the through electrode 22 can be reliably formed by the intermediate electrode 28 even when the accuracy of the through hole is insufficient or the lamination of the sheet material is shifted. The configuration of the through electrode 21 described later is also the same.

  The through electrode 22 is formed by sintering a metal paste mainly composed of a metal powder such as tungsten into the through hole, injecting and solidifying a conductive paste such as carbon, or by using a metal bar or plate. It is formed by inserting. As the metal bar, for example, aluminum, stainless steel, tungsten, nickel, silver, gold, or a conductive resin containing carbon can be used. The electrode 6 is electrically connected to the terminal 12 through the metal layer 11 and the through electrode 22.

A metal layer 9 and a bonding metal layer 8, which are metal layers for bonding the sealing plate 3 and the concave container 2, are formed at the end of the opening of the recess 13.
The bonding metal layer 8 is composed of a layer of brazing material (nickel, gold, etc.) formed on the metal layer 9 (metallized layer) formed on the entire periphery of the end of the opening. The bonding metal layer 8 is sometimes called a seal ring in order to ensure airtightness between the sealing plate 3 and the concave container 2.

The metallized layer is made of, for example, kovar (alloy of ratio of Co: 17, Ni: 29, Fe: 54), and a metal ring made of Kovar is placed on the end of the concave container 2 and fired. It is formed.
As will be described later, when the sealing plate 3 is placed in the opening of the recess 13 and heated, the brazing material layer melts and fuses with the metal layer 15, and the recess 13 is sealed by the sealing plate 3.

In the concave container 2, by laminating sheet materials 41 to 45 having holes, through-holes having openings at the end of the opening of the concave 13 and the bottom of the concave container 2 in the side wall surrounding the concave 13 Is formed.
A cylindrical through electrode 21 that electrically connects the bonding metal layer 8 and the terminal 10 is formed in the through hole.
The outer diameter of the through electrode 21 and the inner diameter of the through hole are set to be the same, and no gap is generated between the through electrode 21 and the inner wall of the through hole.
The material and forming method of the through electrode 21 and the bonding using the intermediate electrode 28 are the same as those of the through electrode 22.

The terminals 10 and 12 are formed by conducting conductor printing with an ink containing tungsten or the like and firing it, and then plating the surface thereof with gold or nickel. Furthermore, a metal such as gold or tin can be plated on the nickel plating for rust prevention.
The plating includes electrolytic plating and electroless plating, and may be formed by a vapor phase method such as vacuum deposition.
Thereby, the high solder wettability of the terminals 10 and 12 is ensured, and the electric double layer capacitor 1 can be satisfactorily surface-mounted on the substrate.
In addition, in this Embodiment, although the terminals 10 and 12 were provided in the outer bottom face part of the concave container 2, you may form in an outer side face part, or may form continuously from an outer bottom face to a side face.
The terminals 10 and 12 are formed after the through electrodes 21 and 22 are installed in the through holes.
Further, if the terminals 10 and 12 are not formed up to the end of the bottom of the concave container 2, when a large number of electric double layer capacitors 1 are simultaneously formed with a large sheet material, the terminals 10 and 12 are separated when they are separated. Can be prevented.

The sealing plate 3 is a metal member made of Kovar or the like. Since Kovar has a thermal expansion coefficient approximately equal to that of ceramics, it is possible to suppress the stress generated between the sealing plate 3 and the concave container 2 when the electric double layer capacitor 1 is heated during reflow.
On the lower surface of the sealing plate 3, a metal layer 15 is formed by nickel plating in order to bond the sealing plate 3 to the bonding metal layer 8 satisfactorily.
When the metal layer 15 is brazed to the bonding metal layer 8, the sealing plate 3 is physically and electrically bonded to the opening of the recess 13.

The brazing is dissolved by heating the sealing plate 3 while applying pressure, and the sealing plate 3 and the concave container 2 are joined.
More specifically, it is possible to use parallel seam welding in which the roller electrode is brought into contact with the edge of the sealing plate 3 with an appropriate pressure and is rotated while being energized. The bonding metal layer 8 is heated by the contact resistance, and pressurization and heating are performed. In addition to parallel seam welding, heat welding by laser is also possible.

When performing parallel seam welding, it is desirable to select a material with good compatibility between the bonding metal layer 8 and the sealing plate 3. For example, when electrolytic nickel or electroless nickel is used for the bonding metal layer 8, the sealing plate 3 is , Kovar with electrolytic nickel or electroless nickel is used.
Or, conversely, when electrolytic nickel is used for the bonding metal layer 8, the sealing plate 3 is obtained by applying electroless nickel to Kovar. Thereby, it is not necessary to raise the welding power more than necessary. Furthermore, when performing electroless nickel, various reducing agents can be used. Examples include dimethylamine borane, hypophosphorous acid, hydrazine, sodium borohydride and the like. Here, when the nickel used for plating is melted as the brazing material, it is desirable that the melting point of nickel is lower. Therefore, by using hypophosphorous acid as a reducing agent during plating, when the chemical composition of the finished plating is “Ni: 90% -96%, P: 4% -10%”, boron Compared to the case of containing, it has a lower melting point and is suitable for brazing.
Further, in order to fix the seal ring of the bonding metal layer 8 to the ceramic metallized layer, it is also possible to use a brazing material such as gold brazing or silver brazing or a solder material.

An electrode 5 made of an electrode active material is joined to the lower surface of the metal layer 15 by a conductive adhesive containing carbon.
The material and shape of the electrode 5 are the same as those of the electrode 6. A portion 51 in contact with the electrode 5 in the metal layer 15 functions as a current collector. And the part 52 which is not in contact with the electrode 5 among the metal layers 15 functions as a conductor bonded to the current collector.
In this way, the electrode 5 is electrically connected to the terminal 10 via the metal layer 15, the bonding metal layer 8, and the through electrode 21.

The electrodes 5 and 6 face each other in a cavity formed by the recess 13 and the sealing plate 3, and a separator 7 is installed between the electrodes 5 and 6 to prevent a short circuit due to contact of the electrodes 5 and 6. Has been.
The material of the separator 7 is made of a material imparting hydrophilicity to the surface, such as a heat-resistant resin such as PPS (polyphenylene sulfide), PEEK (polyether ether ketone), modified PEEK, PTFE (polytetrafluoroethylene). Nonwoven fabrics or glass fibers can be used.

Further, an electrolyte is enclosed in a hollow portion constituted by the recess 13 and the sealing plate 3.
The electrolyte is composed of a solution in which a supporting salt such as (CH3). (CH4) 3N.BF4 is dissolved in a nonaqueous solvent such as PC (propylene carbonate) or SL (sulfolane). Thus, although a liquid is used as the supporting salt in the present embodiment, a gel-like or solid electrolyte can also be used. Although depending on the sealing method, when a liquid solvent is used as the electrolyte, the boiling point is desirably 200 ° C. or higher. Furthermore, it is desirable that the vapor pressure does not increase due to the heat applied during sealing. A low boiling point solvent having a boiling point of less than 100 ° C. can be added to the electrolytic solution, but at least the vapor pressure at the melting point of the resin is preferably 0.2 MPa-G or less. When injecting an electrolytic solution, the electrolyte can be impregnated into the details of the electrode by injecting the electrolytic solution into the concave portion 13 and then singly or in combination with reduced pressure, heating, or increased pressure.
In addition, when using a solid electrolyte, the separator 7 becomes unnecessary.
Further, when a fixed electrolyte is used, the current collector is not melted out if the electrolyte and the current collector are not in contact with each other. Therefore, the electrode 5 can be a positive electrode and the electrode 6 can be a negative electrode.

The electric double layer capacitor 1 configured as described above is surface-mounted on a substrate with the terminal 10 as a negative electrode and the terminal 12 as a positive electrode, and can be used as, for example, a mobile phone memory or a clock backup power source.
In this case, the mobile phone charges the electric double layer capacitor 1 at the same time that the battery of the main power source is mounted, and the electric charge accumulated in the electric double layer capacitor 1 is changed when the battery is replaced or when the voltage of the main power source decreases. Is discharged to supply power to the memory or to maintain a function such as a clock.

In the above description, the concave container 2 is made of ceramics mainly composed of alumina, but may be made of a heat-resistant material such as heat-resistant resin, glass, or ceramic glass.
When the concave container 2 is formed of glass or glass ceramic, wiring is applied to the low melting point glass or glass ceramic by conductor printing, laminated, and then fired at a low temperature.
When the concave container 2 is made of resin, the through electrodes 21 and 22 can be insert-molded.

Further, if the diameter of the sheet material 42 is set larger than the diameter of the sheet material 41 for the through electrode 22, even if the pressure in the concave portion 13 is increased by heating at the time of reflow, the pressure is reduced. It is possible to prevent the through electrode 22 from falling out of the concave container 2.
Similarly, the through electrode 21 can be set such that the diameter of the sheet material 45 is larger than the diameter of the sheet materials 41 to 44.

FIG. 1B is a diagram for explaining a modification of the electric double layer capacitor 1.
In this example, the electric double layer capacitor 1 does not have the through electrodes 21 and 22, and the electrodes 5 and 6 are connected to the terminals 10 and 12 by wiring formed on the side surface of the concave container 2. Other configurations are the same as those of the first embodiment described above.
The metal layer 11 penetrates from the bottom surface of the storage portion 17 to the outside of the concave container 2 along the surface of the sheet material 42, passes through the side surface of the concave container 2, and is electrically connected to the terminal 12 formed on the bottom surface of the concave container 2. Connected to.

The metal layer 11 is formed in the minimum necessary size on the bottom surface of the storage unit 17, but may be formed on the entire bottom surface. In addition, the thickness of the metal layer 11 is leveled by the conductive paste, and a flat current collector 18 is obtained.
The metal layer 9 is bonded to the bonding metal layer 8 at the upper end surface of the concave container 2, and is electrically connected to the terminal 10 formed on the bottom surface of the concave container 2 through the side surface of the concave container 2.
On the side surface of the concave container 2, auxiliary electrodes are provided on the upper surfaces of the sheet materials 41 to 44 so that the electrical connection on the side surface is more reliable.
Thus, the electric double layer capacitor 1 can also be configured by a method that does not use a through electrode.

FIG. 1C is an example in which a current collector 20 is applied on the upper surface of the metal layer 11 by applying a conductive paste in advance and solidifying it. In this case, the metal layer 11 and the current collector 20 and the current collector 20 and the electrode 6 are joined using a conductive adhesive or the like.
Thus, instead of injecting and solidifying the conductive paste into the storage unit 17, a conductive paste that has been solidified in advance may be installed in the storage unit 17.
The current collector 20 fills the periphery of the metal layer 11 without any gap, so that the electrolytic solution does not touch the metal layer 11.
Thereby, it can prevent that the metal layer 11 elutes and quality falls.

FIG. 2D shows an example in which the through electrode is formed of a conductive paste.
When a through hole extending from the bottom surface of the storage portion 17 to the metal layer 11 is formed in the sheet material 42 and a conductive paste is injected into the storage portion 17, the conductive paste enters the through hole and solidifies. It is formed.
Further, by reducing the pressure after injecting the conductive paste, bubbles entrained together with the paste at the position of the through electrode 61 can be removed.
Since the current collector 18 and the through electrode 61 are integrally formed, the electrode 6 is electrically connected to the terminal 12 via the current collector 18, the through electrode 61, and the metal layer 11.
In this example, the bonding metal layer 8 and the terminal 10 are electrically connected by the through electrode 21.
FIG. 2E shows an example in which the current collector 18 and the metal layer 11 are electrically connected by the through electrode 61, and the bonding metal layer 8 and the terminal 10 are electrically connected by the metal layer 9.

FIG. 3F shows an example in which the storage portion 17 is used as it is without forming a step portion in the recess portion 13. In this example, the current collector 18 and the metal layer 11 are electrically connected by the through electrode 61.
FIG. 3G shows an example in which a current collector 18 is formed on a part of the bottom of the storage unit 17. Thus, the electrode 6 can be functioned without forming the current collector 18 on the entire bottom surface of the part reservoir 17.
In this example, the storage portion 17 is formed without forming a step portion in the recess 13, and the current collector 18 and the metal layer 11 are electrically connected by the through electrode 61.

Each drawing in FIG. 4 is a diagram for explaining a method of forming the current collector 18.
First, as shown in FIG. 4A, the concave container 2 in which the bonding metal layer 8, the through electrodes 21 and 22, the metal layer 11, and the terminals 10 and 12 are formed is prepared.
And the electrically conductive paste used as the electrical power collector 18 is supplied to the storage part 17. FIG. The supply amount of the conductive paste is set so as to fill the entire bottom surface of the storage portion 17 and form the meniscus 19.

FIG. 4B is a view of the concave container 2 as viewed from above before supplying the conductive paste to the storage unit 17.
As shown in the figure, the metal layer 11 is formed in a circular shape at the bottom of the reservoir 17. The shape of the metal layer 11 may be arbitrary such as a rectangle.
FIG. 4C is a view of the conductive paste supplied to the concave container 2 as viewed from above. A conductive paste serving as a current collector 18 is stored in the center of the concave container 2.

Next, as shown in FIG. 5, the electrode 6 is placed on the liquid surface of the conductive paste to be the current collector 18. Then, the electrode 6 is positioned at the center of the storage portion 17 by the meniscus 19 of the conductive paste.
When heated to a temperature of about 180 [° C.], the conductive paste is solidified to become the current collector 18, and the electrode 6 is fixed at the central portion of the storage portion 17.
Although not shown in the drawing, when the separator 7 is placed on the electrode 6, the electrolyte is supplied, and the opening of the recess 13 is sealed with the sealing plate 3 to which the electrode 5 is attached and brazed, the electric double layer capacitor 1 is completed.

The current collector 18 can also be formed in a layered manner by supplying the conductive paste to the reservoir 17 and solidifying it multiple times (that is, by applying it in multiple times).
In this case, the process of supplying the conductive paste to the storage portion 17 and heating and solidifying it, and further supplying the conductive paste thereon and heating and solidifying it is repeated up to the layer below the uppermost layer.
When the uppermost layer is formed, the uppermost conductive paste is supplied by supplying the uppermost conductive paste, and the electrode 6 is placed on the liquid surface, and then heated to solidify the uppermost conductive paste. In this way, the current collector 18 is formed in a layer shape.

Even when the thickness of the conductive paste is thin, the electric resistance varies due to the difference or distribution of the thickness of the conductive paste, and thus the power concentration occurs to a small extent.
Therefore, when applying the conductive paste, it is important to apply a uniform thickness of approximately 50 μm or more. By heating after application, the main component of the curing component and the solidification accelerator contained in the paste are polymerized by a chemical reaction, and the current collector layer 18 having an electronic conductive network is formed by contacting the carbons. Is done.

At that time, an organic solvent may be added for the purpose of lowering the viscosity of the conductive paste, and when the solvent is vaporized, bubbles are formed, and a small communication hole having a diameter of about several μm may be formed.
Alternatively, the above-described small-diameter communication holes may also be formed by the gas component in the atmosphere entrained when the conductive paste is applied. When the electrolyte is in contact with the metal layer 11 through the communication hole, the metal of the metal layer 11 may be eluted from the communication hole and reduced to the metal on the surface of the activated carbon.
In order to avoid such dissolution and precipitation of the metal, it is possible to obtain the effect of suppressing the generation of the above-mentioned communication holes by defoaming the bubbles by applying a reduced pressure after applying the conductive paste.
Also, the conductive paste can be divided into a plurality of times and applied to a uniform thickness of approximately 50 μm or more to obtain the effect of suppressing the formation of the above-described communication holes. At this time, it is preferable to apply at least two times, and more preferably three times or more.

According to the embodiment described above, the following effects can be obtained.
(1) The positive electrode current collector 18 can be formed of a carbon material.
(2) Since the conductive paste is solidified to form the current collector 18, a dry process such as vacuum deposition is not required.
(3) By providing the storage part 17 in the bottom part of the recessed part 13, a liquid conductive paste can be stored and the protrusion of a conductive paste etc. can be prevented.
(4) By placing the electrode 6 on the stored liquid conductive paste, the electrode 6 can be easily positioned by the surface tension of the conductive paste.

(Second Embodiment)
FIG. 6A is a side sectional view of the electric double layer capacitor 1 according to the second embodiment.
The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
A protrusion 33 that bisects the bottom surface is formed on the bottom surface of the recess 13. Then, on the bottom surface of the concave portion 13, two storage portions 17 a and 17 b that are reservoir portions for storing the conductive paste before solidification are formed by the protrusion 33.
The conductive paste solidified in the reservoirs 17a and 17b becomes current collectors 18a and 18b, respectively. Note that the conductive paste used is the same as that in the first embodiment.

  The depths of the storage portions 17a and 17b are such that the conductive paste is stored, and the inner periphery of the storage portions 17a and 17b is set to be larger than the outer periphery of the electrodes 5 and 6 by the meniscus of the conductive paste.

Metal layers 11a and 11b are formed on the bottom surfaces of the reservoirs 17a and 17b, respectively. The manufacturing method of the metal layers 11a and 11b is the same as that of the metal layer 11 of the first embodiment.
The reservoirs 17 a and 17 b are electrically connected to the terminals 10 and 12 by through electrodes 21 and 22 formed at the bottom of the concave container 2, respectively. The through electrodes 21 and 22 are reliably joined by the intermediate electrode 28.

In the reservoirs 17a and 17b, layers of current collectors 18a and 18b obtained by solidifying the conductive paste are formed on the upper surfaces of the metal layers 11a and 11b, respectively, and the electrodes 5 and 6 are further provided thereon. Has been.
This is because when the conductive paste is liquid, the electrodes 5 and 6 are placed on the conductive paste, and the conductive paste is heated and solidified so that the electrodes 5 and 6 are stored in the reservoirs 17a and 17b by the current collectors 18a and 18b. It is fixed.
The metal layers 11a and 11b are formed in a necessary minimum area, the thickness thereof is leveled by the conductive paste, and the upper surfaces of the current collectors 18a and 18b are flat. In addition, you may form the metal layers 11a and 11b in the whole bottom face of the storage parts 17a and 17b.

The electrodes 5 and 6 have a rectangular parallelepiped shape and are made of the same material as the electrodes 5 and 6 of the first embodiment. The electrodes 5 and 6 may have other shapes such as a cylindrical shape.
In the second embodiment, since the electrodes 5 and 6 are formed symmetrically, any of them may be a positive electrode.
Further, the electrodes 5 and 6 face each other at the upper part of the protruding portion 33, and a separator 7 for preventing a short circuit is disposed between the electrodes 5 and 6. The material of the separator 7 is the same as that of the first embodiment. Note that when the solid electrolyte is used, the separator 7 is not necessary.

The recess 13 is filled with an electrolyte, and an impregnation member 31 impregnated with the electrolyte is installed between the upper surface of the electrodes 5 and 6 and the lower surface of the sealing plate 3 (the surface of the metal layer 15). Has been.
The impregnating member 31 is formed in a sponge shape from a glass material, a resin wick, or the like, and has elasticity and liquid absorption.
The impregnation member 31 is pressed against the electrodes 5 and 6 and the separator 7. Thereby, the impregnating member 31 can hold the electrodes 5 and 6 and the separator 7 in a state where the electrodes 5 and 6 are in contact with the electrolyte.

  The structure of the sealing plate 3 is the same as that of the first embodiment. For example, the sealing plate 3 is made of aluminum and an insulating layer made of alumina is formed on the lower surface by thermal oxidation. May be. Thereby, even when the electrodes 5 and 6 are in contact with the lower surface of the sealing plate 3 due to impact or the like, a short circuit can be prevented.

The concave container 2 is formed by laminating sheet materials 41 to 45 made of green sheets, as in the first embodiment.
Through holes for forming the through electrodes 21 and 22 are formed in the sheet materials 41 and 42, and openings corresponding to the recesses 13 are formed in the sheet materials 43 to 45. In the sheet material 43, the portion that becomes the protrusion 33 remains without being pulled out.

FIG. 6B is a diagram for explaining a modification of the second embodiment.
In this example, the electric double layer capacitor 1 does not have the through electrodes 21 and 22, and the electrodes 5 and 6 are connected to the terminals 10 and 12 by wiring formed on the side surface of the concave container 2. Other configurations are the same as those of the second embodiment described above.
The metal layers 11a and 11b penetrate the outside of the concave container 2 along the surface of the sheet material 42 from the bottom surfaces of the storage portions 17a and 17b, and are electrically connected to the terminals 10 and 12 through the side surfaces of the concave container 2, respectively. Connected. The metal layers 11a and 11b are formed on the bottom surfaces of the storage portions 17a and 17b with a necessary minimum size, but may be formed on the entire bottom surface.
Thus, the electric double layer capacitor 1 can also be configured by a method that does not use a through electrode.

FIG. 7A is a diagram for explaining a further modification of the second embodiment.
The concave container 2 is formed by forming resin sheet materials 41 to 45.
As the resin, for example, PTFE (tetrafluoroethylene), PFA (polytetrafluoroethylene), FRP (fiber reinforced plastic), or the like can be used.
PFA is welded to stainless steel and PTFE has high properties such as high strength. Therefore, for example, the sheet material 41 is PTFE, the sheet materials 42 and 43 are PFA, and the sheet materials 44 and 45 are PTFE. As described above, different resin sheet materials can be combined.

The metal layers 11 a and 11 b are formed using, for example, a stainless steel plate material, and are laminated and heated together with the sheet materials 41 to 45, and welded to the sheet materials 42 and 43.
The metal layers 11a and 11b are bent to the bottom surface of the concave container 2, and the tip portions of the metal layers 11a and 11b form the terminals 10 and 12, respectively.
The sealing plate 3 is made of, for example, a PTFE sheet material, and is welded to the opening of the concave container 2 by laser welding or the like.
The thickness of the metal layers 11a and 11b is leveled by the conductive paste, and the upper surfaces of the current collectors 18a and 18b are flat. The conductive paste may be multiple-coated.
If metal plates are used as the metal layers 11a and 11b, the cost can be reduced.

FIG.7 (b) is a figure for demonstrating the further modification of 2nd Embodiment.
In this example, the current collector 18a and the metal layer 11a, and the current collector 18b and the metal layer 11b are electrically connected by through electrodes 61a and 61b formed by solidifying the conductive paste, respectively.

Each figure of FIG. 8 is a figure for demonstrating the formation method of collector 18a, 18b.
First, as shown in FIG. 8 (a), a concave container 2 in which the bonding metal layer 8, the through electrodes 21 and 22, the storage portions 17a and 17b, the metal layers 11a and 11b, and the terminals 10 and 12 are prepared. .
And the electrically conductive paste is supplied to the storage parts 17a and 17b. The supply amount of the conductive paste is set so as to fill all of the bottom surfaces of the storage portions 17a and 17b and to form the meniscus 19a and 19b.
FIG. 8B shows a place where the conductive paste is supplied to the concave container 2 as viewed from above. When solidified in the reservoirs 17a and 17b, the conductive paste that becomes the current collectors 18a and 18b is stored.

Next, as shown in FIG. 8C, electrodes 5 and 6 are placed on the liquid surface of the conductive paste, respectively. Then, the electrodes 5 and 6 are located in the center part of the storage parts 17a and 17b by the meniscus of the conductive paste, respectively.
When heated to a temperature of about 180 [° C.], the conductive paste is solidified, the conductive paste is solidified to become current collectors 18a and 18b, and the electrodes 5 and 6 are fixed to the central portions of the storage portions 17a and 17b. .
Although not shown, a separator 7 is then placed between the electrodes 5 and 6 to supply electrolyte. Furthermore, when the impregnated member 31 impregnated with electrolyte is brazed by sealing the opening of the recess 13 with the sealing plate 3 on the electrodes 5 and 6, the electric double layer capacitor 1 is completed.

According to the first embodiment described above, the following configuration can be obtained.
The concave container 2 sealed with the sealing plate 3 functions as a container having a hollow portion because the concave portion 13 becomes a hollow portion.
The metal layer 11 and the through electrode 22 bonded thereto function as a first conductor that conducts from the cavity to the outside of the container.
The current collector 18 is joined to the first conductor in the cavity and functions as a first current collector using carbon as a conductive material.
The electrode 6 functions as a first electrode joined to the first current collector.
The portion 52 of the metal layer 15 that does not contact the electrode 5, the bonding metal layer 8 that bonds to the electrode 5, and the through electrode 21 function as a second conductor that conducts from the cavity to the outside of the container.
The portion 51 in contact with the electrode 5 of the metal layer 15 functions as a second current collector that is joined to the second conductor in the cavity.
The electrode 5 is bonded to the second current collector and functions as a second electrode facing the first electrode with a predetermined distance.
The electrolyte sealed in the recess 13 functions as an electrolyte in contact with the first electrode and the second electrode.

  Since the electrode 6 is used as a positive electrode and the electrode 5 is used as a negative electrode, the first electrode is a positive electrode and the second electrode is a negative electrode.

  In order to prevent the metal layer 11 from being dissolved in the electrolyte, the metal layer 11 is entirely covered with the current collector 18 in the recess 13, so that the first current collector is the first current collector in the cavity. All of the conductors are covered.

  The conductive paste is a paste obtained by processing a phenolic resin containing a carbon material and a solvent into a paste, and since the phenolic resin component is polymerized into a resinous form, the first current collector contains carbon. It is made of a resin used as a conductive material.

  Since the current collector 18 is formed in the storage portion 17 (formed by a recess), the first current collector is formed in a recess formed in the cavity.

  By repeating the supply and solidification of the conductive paste, the current collector 18 can be formed into a layer, and in this case, the first current collector is formed with a member having carbon as a conductive material in a layer.

  In the second embodiment, since the current collector is also formed on the electrode 5 using the conductive paste, in this case, the second current collector uses carbon as a conductive material.

The electric double layer capacitor 1 can be used as, for example, a mobile phone memory or a clock backup power source.
In this case, the cellular phone exhibits predetermined functions such as an electronic component composed of the electric double layer capacitor 1, a power storage means for storing the battery of the main power supply and storing the electronic component at the same time, and a memory and a clock. Functions as an electronic device including other electronic components and power supply means for supplying power to the other electronic components using the stored charges, such as discharging the stored charges and supplying power to the memory or clock. doing.

The concave container 2 is formed by laminating sheet materials 41 to 45, and the concave portion 13 for forming a cavity, the storage portion 17, the metal layer 11, and the through electrodes 21 and 22 are formed. The manufacturing process of the multilayer capacitor 1 includes a recess for forming a cavity, a storage part for storing the conductive paste formed in the recess, a first conductor that conducts to the outside from the bottom surface of the storage part, Forming a concave container having:
In addition, in order to supply the conductive paste to the storage portion 17 and install the electrode 6 on the liquid surface, and then to heat and solidify the conductive paste, the manufacturing process includes a conductive paste using carbon as a conductive material in the storage portion. , A step of installing a first electrode on the supplied conductive paste, and a step of forming a first current collector by solidifying the conductive paste provided with the first electrode Have.
Further, the electrode 5 is joined to the metal layer 15, the electrolyte is supplied to the recess 13, and the electrode 5 is installed in the recess 13 together with the separator 7, so that the process includes the second current collector, A second electrode installed on the second current collector and facing the first electrode at a predetermined distance; a second conductor joined to the second current collector and electrically connected to the outside; And forming an electrolyte in contact with the first electrode and the second electrode.
Since the recess 13 is sealed with the sealing plate 3 by brazing, the process includes a step of sealing the recess.

In addition, about this embodiment, it is also possible to comprise as follows.
(1) Configuration 1
A container having a cavity,
A first conductor that conducts from the cavity to the outside of the container;
A first current collector bonded to the first conductor in the cavity and using carbon as a conductive material;
A first electrode joined to the first current collector;
A second conductor that conducts from the cavity to the outside of the container;
A second current collector joined to the second conductor in the cavity;
A second electrode joined to the second current collector and facing the first electrode at a predetermined distance;
An electrolyte in contact with the first electrode and the second electrode;
An electronic component comprising:
(2) Configuration 2
The electronic component according to Configuration 1, wherein the first electrode is a positive electrode and the second electrode is a negative electrode.
(3) Configuration 3
The electronic component according to Configuration 1 or Configuration 2, wherein the first current collector covers all of the first conductor in the cavity.
(4) Configuration 4
The electronic component according to Configuration 1, Configuration 2, or Configuration 3, wherein the first current collector is formed of a resin having carbon as a conductive material.
(5) Configuration 5
The electronic component according to any one of Configurations 1 to 4, wherein the first current collector is formed in a recess formed in the cavity.
(6) Configuration 6
The electronic component according to any one of Configurations 1 to 5, wherein the first current collector is formed of a member having carbon as a conductive material in a layer shape.
(7) Configuration 7
The electronic component according to any one of configurations 1 to 6, wherein the second current collector is made of carbon as a conductive material.
(8) Configuration 8
The electronic component according to any one of the configurations 1 to 7;
Power storage means for storing power in the electronic component;
With other electronic components that perform the specified function,
Power supply means for supplying power to the other electronic component using the stored charge;
An electronic device comprising:
(9) Configuration 9
Forming a concave container having a concave portion for forming a cavity, a storage portion for storing the conductive paste formed in the concave portion, and a first conductor that conducts from the bottom surface of the storage portion to the outside. When,
Supplying a conductive paste containing carbon as a conductive material to the reservoir;
Installing a first electrode on the supplied conductive paste;
Solidifying the conductive paste provided with the first electrode to form a first current collector;
In the recess, a second current collector, a second electrode installed on the second current collector and facing the first electrode with a predetermined distance, and the second current collector Forming a second conductor that joins and conducts to the outside, the first electrode, and the electrolyte in contact with the second electrode;
Sealing the recess;
The manufacturing method of the electronic component characterized by including.
(10) According to each configuration described above, the productivity of the electric double layer capacitor can be increased by forming the current collector mainly composed of carbon on the bottom surface of the recess.

DESCRIPTION OF SYMBOLS 1 Electric double layer capacitor 2 Concave container 3 Sealing plate 5 Electrode 6 Electrode 7 Separator 8 Bonding metal layer 9 Metal layer 10 Terminal 11 Metal layer 12 Terminal 13 Recess 15 Metal layer 17 Reservoir 18 Current collector 19 Meniscus 21, 22 Through electrode 28 Intermediate electrode 31 Impregnated member 33 Projection part 41 to 45 Sheet material 51, 52 part 61 Through electrode 100 Electric double layer capacitor 102 Concave container 103 Sealing plate 105 Negative electrode 106 Positive electrode 107 Separator 108 Bonding metal layer 109 Metal layer 110 Negative electrode terminal 111 Metal layer 112 Positive electrode terminal 113 Recess 115 Metal layer

Claims (8)

A container with a bottom formed of ceramic and having a cavity;
In the bottom of the container, a first conductor disposed in a direction parallel to the bottom surface of the cavity, and conducting to the outside of the container on the outer side surface of the container;
A through hole formed in the bottom of the container and penetrating from the bottom of the cavity to the first conductor;
Oite all surfaces of the bottom surface within the cavity, the supplied shallower than the entire surface to the depth of the cavity of the bottom surface of the cavity, the meniscus around is formed, solidified conductive paste and conductive material of carbon A first current collector formed by
A first electrode which is positioned by the concave meniscus formed by the supply of the conductive paste and is joined to the first current collector;
A through electrode formed by solidifying a conductive paste using carbon as a conductive material in the through hole, which electrically connects the first conductor and the first current collector;
A second conductor that conducts from the cavity to the outside of the container;
A second current collector joined to the second conductor in the cavity;
A second electrode joined to the second current collector and facing the first electrode at a predetermined distance; the first electrode; and an electrolyte in contact with the second electrode;
An electronic component comprising:   The electronic component according to claim 1, wherein the first electrode is a positive electrode, and the second electrode is a negative electrode. The bottom of the container is formed by firing a sheet material laminated with the ceramic,
The first conductor is formed between the stacked layers.
The electronic component according to claim 1, wherein the electronic component is an electronic component.   4. The electronic component according to claim 1, wherein the first current collector is formed of a resin having carbon as a conductive material. 5.   The electronic component according to any one of claims 1 to 4, wherein the first current collector is formed in a recess formed in a bottom portion of the container. .   The electronic component according to any one of claims 1 to 5, wherein the first current collector is formed of a member having carbon as a conductive material in a layered manner. .   The electronic component according to any one of claims 1 to 6, wherein the second current collector uses carbon as a conductive material. An electronic component according to any one of claims 1 to 7, and
Power storage means for storing power in the electronic component;
With other electronic components that perform the specified function,
Power supply means for supplying power to the other electronic component using the stored charge;
An electronic device comprising:

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