JP5348414B2 - Electrochemical device and manufacturing method thereof - Google Patents
Electrochemical device and manufacturing method thereofInfo
- Publication number
- JP5348414B2 JP5348414B2 JP2009204823A JP2009204823A JP5348414B2 JP 5348414 B2 JP5348414 B2 JP 5348414B2 JP 2009204823 A JP2009204823 A JP 2009204823A JP 2009204823 A JP2009204823 A JP 2009204823A JP 5348414 B2 JP5348414 B2 JP 5348414B2
- Authority
- JP
- Japan
- Prior art keywords
- active material
- electrochemical device
- current collector
- electrode active
- layer
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/16—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture specially for use as rectifiers or detectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
- H01G11/28—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/42—Powders or particles, e.g. composition thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/52—Separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
本発明は、電気化学デバイスおよびその製造方法に関し、特に電気二重層キャパシタ、電池等の電気化学デバイスおよびその製造方法に関する。 The present invention relates to an electrochemical device and a manufacturing method thereof, and more particularly to an electrochemical device such as an electric double layer capacitor and a battery and a manufacturing method thereof.
図７は、従来の電気化学デバイスの構成を示す斜視図である。ワイヤ状の電極５０１が、軸方向と平行に集積、多芯化されており、多芯化された電極が、円筒状の外装体５１１の内部に収容されている。 FIG. 7 is a perspective view showing a configuration of a conventional electrochemical device. Wire-like electrodes 501 are integrated and multi-core parallel to the axial direction, and the multi-core electrodes are accommodated inside a cylindrical outer package 511.
図８は、電極５０１の構成を示す側面図である。細線状の負極集電体５０２の表面は、カーボンからなる負極活物質層５０３で被覆されており、負極集電体５０２の両端は負極活物質層５０３の端面から突出している。 FIG. 8 is a side view showing the configuration of the electrode 501. The surface of the thin-line negative electrode current collector 502 is covered with a negative electrode active material layer 503 made of carbon, and both ends of the negative electrode current collector 502 protrude from the end face of the negative electrode active material layer 503.
負極活物質層５０３の表面は、電気絶縁性を有するセパレーター５０４で被覆されており、負極活物質層５０３の両端はセパレーター５０４の端面から突出している。 The surface of the negative electrode active material layer 503 is covered with an electrically insulating separator 504, and both ends of the negative electrode active material layer 503 protrude from the end face of the separator 504.
セパレーター５０４の表面は、正極活物質層５０５で被覆されており、セパレーター５０４の両端は正極活物質層５０５の端面から突出している。 The surface of the separator 504 is covered with a positive electrode active material layer 505, and both ends of the separator 504 protrude from the end face of the positive electrode active material layer 505.
正極活物質層５０５の表面は、正極集電体５０７で被覆されており、正極活物質層５０５の両端は正極集電体５０７の端面から突出している。 The surface of the positive electrode active material layer 505 is covered with a positive electrode current collector 507, and both ends of the positive electrode active material layer 505 protrude from the end face of the positive electrode current collector 507.
すなわち、電極５０１は負極集電体５０２を芯にした多層構造となっている。 That is, the electrode 501 has a multilayer structure with the negative electrode current collector 502 as a core.
電解液は、電極５０１の端面から負極活物質層５０３，セパレーター５０４及び正極活物質５０５へ含浸される。電解液を含浸させた後、図９に示すように、電極５０１の端面を封止材５０８で封止し、活物質の脱落及び電解液の漏出を防止している。 The electrolytic solution is impregnated into the negative electrode active material layer 503, the separator 504, and the positive electrode active material 505 from the end face of the electrode 501. After impregnating with the electrolytic solution, as shown in FIG. 9, the end face of the electrode 501 is sealed with a sealing material 508 to prevent the active material from dropping and the electrolytic solution from leaking out.
ところで、上記の電気化学デバイスの場合、電解液を線状の電極内に密閉するようにするため、電解液が注入しにくい。また、密閉された電極内に電解液を注入した場合、電解液の流動性が低く、充放電時の電荷移動が遅いため、内部抵抗が高いという問題がある。 By the way, in the case of said electrochemical device, in order to seal electrolyte solution in a linear electrode, electrolyte solution is hard to inject | pour. In addition, when an electrolytic solution is injected into a sealed electrode, there is a problem in that the internal resistance is high because the fluidity of the electrolytic solution is low and charge transfer during charging and discharging is slow.
本発明は上記の課題に鑑みなされたものであって、内部抵抗が低く、電解液を容易に注入できる電気化学デバイスおよびその製造方法を提供することを目的とする。 The present invention has been made in view of the above problems, and an object thereof is to provide an electrochemical device having a low internal resistance and capable of easily injecting an electrolytic solution, and a method for producing the same.
上記問題点を解決するために、本発明に係る電気化学デバイスは、線状の第１の電極集電体と前記第１の電極集電体表面を被覆する第１の電極活物質層と前記第１の電極活物質表面を被覆するセパレーター層と前記セパレーター層表面を被覆する第２の電極活物質層からなる基本セルを備え、前記基本セルが、多孔性導電体層を介してシート状の第２の電極集電体と電気的に接続されており、前記第２の電極集電体と接続された基本セルと電解液が、外装体に収容されていることを特徴としている。 In order to solve the above problems, an electrochemical device according to the present invention includes a linear first electrode current collector, a first electrode active material layer covering the surface of the first electrode current collector, and the A basic cell comprising a separator layer covering the surface of the first electrode active material and a second electrode active material layer covering the surface of the separator layer, wherein the basic cell is in the form of a sheet via a porous conductor layer It is electrically connected with the 2nd electrode electrical power collector, The basic cell and electrolyte solution which were connected with the said 2nd electrode electrical power collector are accommodated in the exterior body, It is characterized by the above-mentioned.
また、本発明に係る電気化学デバイスは、前記基本セルが複数備えられており、前記複数の基本セルが、前記多孔性導電体層を介して互いに接続されていることが好ましい。この場合、内部抵抗を低くすることができる。 The electrochemical device according to the present invention preferably includes a plurality of the basic cells, and the plurality of basic cells are connected to each other via the porous conductor layer. In this case, the internal resistance can be lowered.
なお、本発明に係る電気化学デバイスは、前記第２の電極集電体がシート状であるため、電解液が注入しやすくなっている。 Incidentally, the electrochemical device according to the present invention, the second electrode current collector for a sheet-like electrolytic solution are What Do easily injected.
また、本発明に係る電気化学デバイスは、前記第１の電極集電体が、アルミニウムであることが好ましい。この場合、第１の電極集電体の電気伝導度を高くすることができ、また耐電圧を高めることができる。 In the electrochemical device according to the present invention, the first electrode current collector is preferably aluminum. In this case, the electrical conductivity of the first electrode current collector can be increased, and the withstand voltage can be increased.
また、本発明に係る電気化学デバイスは、前記第１の電極集電体が、炭素繊維であることが好ましい。この場合、デバイスの強度を高められ、また負極集電体と負極活物質層間の接触抵抗を低減することができる。 In the electrochemical device according to the present invention, the first electrode current collector is preferably carbon fiber. In this case, the strength of the device can be increased, and the contact resistance between the negative electrode current collector and the negative electrode active material layer can be reduced.
また、本発明に係る電気化学デバイスは、前記多孔性導電体層が、導電性セラミック粉末、アルミニウム粉末、炭素粉末、金粉末のうち少なくとも一つを含むことが好ましい。この場合、耐電圧を高めることができる。 In the electrochemical device according to the present invention, the porous conductor layer preferably contains at least one of conductive ceramic powder, aluminum powder, carbon powder, and gold powder. In this case, the withstand voltage can be increased.
また、本発明に係る電気化学デバイスの製造方法は、線状の第１の電極集電体を準備する工程と、前記第１の電極集電体の表面に第１の電極活物質を付与した後に乾燥することにより、第１の電極活物質層を形成する工程と、前記第１の電極活物質層の表面にセパレーターを付与した後に乾燥することにより、セパレーター層を形成する工程と、前記セパレーター層の表面に第２の電極活物質を付与した後に乾燥することにより、第２の電極活物質層を形成することにより基本セルを作製する工程と、前記基本セル表面に多孔質導電体を付与した後に乾燥することにより、多孔質導電体層を形成する工程と、前記多孔質
導電体層を介して、前記基本セルとシート状の第２の電極集電体を電気的に接続する工程と、前記第２の電極集電体と電気的に接続された基本セルと電解液を外装体に収容する工程を有することを特徴としている。
Moreover, the manufacturing method of the electrochemical device according to the present invention includes a step of preparing a linear first electrode current collector, and a first electrode active material is applied to the surface of the first electrode current collector. A step of forming a first electrode active material layer by drying later, a step of forming a separator layer by applying a separator to the surface of the first electrode active material layer, and drying the separator; and A step of forming a basic cell by forming a second electrode active material layer by applying a second electrode active material to the surface of the layer and then drying, and applying a porous conductor to the surface of the basic cell Forming a porous conductor layer by drying, and electrically connecting the basic cell and the sheet-like second electrode current collector through the porous conductor layer; and , The second electrode current collector and electricity It is characterized by having a connected step of accommodating the basic cell electrolyte to the exterior body.
また、本発明に係る電気化学デバイスの製造方法は、前記第１の電極活物質層を形成する工程において、前記第１の電極活物質を付与した後に、前記第１の電極活物質の余分な部分を削ぎ落とすことが好ましい。この場合、前記第１の電極活物質層の形成精度を向上することができる。 In addition, in the method for producing an electrochemical device according to the present invention, in the step of forming the first electrode active material layer, after applying the first electrode active material, an excess of the first electrode active material is obtained. It is preferable to scrape off the part. In this case, the formation accuracy of the first electrode active material layer can be improved.
また、本発明に係る電気化学デバイスの製造方法は、前記セパレーター層を形成する工程において、前記セパレーターを付与した後に、前記セパレーターの余分な部分を削ぎ落とすことが好ましい。この場合、セパレーター層の形成精度を向上することができる。 Moreover, it is preferable that the manufacturing method of the electrochemical device which concerns on this invention scrapes off the excess part of the said separator after providing the said separator in the process of forming the said separator layer. In this case, the formation accuracy of the separator layer can be improved.
また、本発明に係る電気化学デバイスの製造方法は、前記第２の電極活物質を付与した後に、前記第２の電極活物質の余分な部分を削ぎ落とすことが好ましい。この場合、第２の電極活物質層の形成精度を向上することができる。 Moreover, it is preferable that the manufacturing method of the electrochemical device which concerns on this invention scrapes off the excess part of a said 2nd electrode active material, after providing a said 2nd electrode active material. In this case, the formation accuracy of the second electrode active material layer can be improved.
また、本発明に係る電気化学デバイスの製造方法は、前記多孔質導電体層を形成する工程において、前記多孔質導電体を付与した後に、前記多孔質導電体の余分な部分を削ぎ落とすことが好ましい。この場合、第２の電極活物質層の形成精度を向上することができる。 Further, in the method for producing an electrochemical device according to the present invention, in the step of forming the porous conductor layer, after applying the porous conductor, an excess portion of the porous conductor may be scraped off. preferable. In this case, the formation accuracy of the second electrode active material layer can be improved.
また、本発明に係る電気化学デバイスの製造方法は、前記基本セルを複数準備し、前記複数の基本セルが、前記多孔性導電体層を介して互いに接続することが好ましい。この場合、内部抵抗を低くすることができる。 In the method for producing an electrochemical device according to the present invention, it is preferable that a plurality of the basic cells are prepared, and the plurality of basic cells are connected to each other through the porous conductor layer. In this case, the internal resistance can be lowered.
なお、本発明に係る電気化学デバイスの製造方法は、前記第２の電極集電体が、シート状であるため、電解液が注入しやすくなっている。
The manufacturing method of an electrochemical device according to the present invention, the second electrode current collector, since a sheet-like electrolytic solution are What Do easily injected.
また、本発明に係る電気化学デバイスの製造方法は、前記第１の電極集電体が、アルミニウムであることが好ましい。この場合、第１の電極集電体の電気伝導度を高くすることができ、また耐電圧を高めることができる。 In the method for producing an electrochemical device according to the present invention, the first electrode current collector is preferably aluminum. In this case, the electrical conductivity of the first electrode current collector can be increased, and the withstand voltage can be increased.
また、本発明に係る電気化学デバイスの製造方法は、前記第１の電極集電体が、炭素繊維であることが好ましい。この場合、デバイスの強度を高められ、また負極集電体と負極活物質層間の接触抵抗を低減することができる。 In the method for producing an electrochemical device according to the present invention, the first electrode current collector is preferably carbon fiber. In this case, the strength of the device can be increased, and the contact resistance between the negative electrode current collector and the negative electrode active material layer can be reduced.
また、本発明に係る電気化学デバイスの製造方法は、前記多孔性導電体層が、導電性セラミック粉末、アルミニウム粉末、炭素粉末、金粉末のうち少なくとも一つを含むものであることが好ましい。この場合、耐電圧を高めることができる。 In the method for producing an electrochemical device according to the present invention, the porous conductor layer preferably contains at least one of conductive ceramic powder, aluminum powder, carbon powder, and gold powder. In this case, the withstand voltage can be increased.
本発明に係る電気化学デバイスおよびその製造方法は、内部抵抗が小さくでき、電解液を容易に注入できる。 The electrochemical device and the manufacturing method thereof according to the present invention can reduce the internal resistance and can easily inject an electrolytic solution.
以下に本発明に係る電気化学デバイスおよびその製造方法の実施形態について図１〜図６に基づき詳細に説明する。 Embodiments of an electrochemical device and a method for producing the same according to the present invention will be described below in detail with reference to FIGS.
図１は、本発明に係る電気化学デバイスに使用する基本セル１の構成を示す斜視図である。図２は、図１に示した基本セル１のＡ１、Ａ２における断面図である。 FIG. 1 is a perspective view showing a configuration of a basic cell 1 used in an electrochemical device according to the present invention. FIG. 2 is a cross-sectional view taken along lines A1 and A2 of the basic cell 1 shown in FIG.
基本セル１の中心は、ワイヤ状のアルミニウムからなる第１の電極集電体２であり、第1の電極集電体２の表面に第１の電極活物質層３が被覆されている。第１の電極活物質層３の表面にセパレータ層４が被覆されており、セパレーター層４の表面に第２の電極活物質層５が形成されている。 The center of the basic cell 1 is a first electrode current collector 2 made of wire-like aluminum, and the surface of the first electrode current collector 2 is covered with a first electrode active material layer 3. A separator layer 4 is coated on the surface of the first electrode active material layer 3, and a second electrode active material layer 5 is formed on the surface of the separator layer 4.
次に図３は、本発明に係る電気化学デバイスの上面図である。図３（ａ）に示すように、表面に多孔性導電体層が形成され、渦巻き状に捲回された基本セル１が、表面に導電性接着剤が塗布されたシート状の第２の電極集電体７の上に、電気的接続がとれるように固定されている。 Next, FIG. 3 is a top view of the electrochemical device according to the present invention. As shown in FIG. 3 (a), a basic electrode 1 having a porous conductor layer formed on the surface and wound in a spiral shape is a sheet-like second electrode having a surface coated with a conductive adhesive. It is fixed on the current collector 7 so as to be electrically connected.
そして、基本セル１端部から露出した第１の電極集電体２と第1のリード端子８が接続されている。また、第２の電極集電体７と第２のリード端子９が接続されている。 Then, the first electrode current collector 2 exposed from the end portion of the basic cell 1 and the first lead terminal 8 are connected. Further, the second electrode current collector 7 and the second lead terminal 9 are connected.
そして、図３（ｂ）に示すように、第２の電極集電体７と接続された基本セル１と電解液が外装体１０に収容されている。 Then, as shown in FIG. 3B, the basic cell 1 connected to the second electrode current collector 7 and the electrolytic solution are accommodated in the outer package 10.
次いで、本発明に係る電気化学デバイスの製造方法の一例として、図３に示した電気化学デバイスの製造工程を、図４、図５に示す。 Next, as an example of the method for manufacturing an electrochemical device according to the present invention, the steps for manufacturing the electrochemical device shown in FIG. 3 are shown in FIGS.
図４（ａ）に示すとおり、ワイヤ状のアルミニウムからなる第１の電極集電体２を、第１の電極活物質ペースト３ａ中に浸漬することにより、第1の電極集電体２の表面に電極活物質ペースト３ａを塗布する。そして、押し抜き機１２に通すことにより、必要以上の厚みで付着した余分な電極活物質ペースト３ａを削ぎ落とし、その後に乾燥することにより第１の電極集電体２の表面に第１の電極活物質層３を形成する。 As shown in FIG. 4A, the surface of the first electrode current collector 2 is obtained by immersing the first electrode current collector 2 made of wire-like aluminum in the first electrode active material paste 3a. The electrode active material paste 3a is applied to the substrate. Then, the excess electrode active material paste 3a adhering to an unnecessarily thick thickness is scraped off by passing through a punching machine 12, and then dried to form a first electrode on the surface of the first electrode current collector 2. The active material layer 3 is formed.
次に図４（ｂ）に示すとおり、第１の電極活物質層３が形成された第１の電極集電体２を、セパレーターペースト４ａに浸漬することにより、第１の電極活物質層３の表面にセパレーターペースト４ａを塗布する。そして、押し抜き機１２に通すことにより、必要以上の厚みで付着した余分なセパレーターペースト４ａを、削ぎ落とし、その後に乾燥することにより第１の電極活物質層３の表面にセパレータ層４を形成する。 Next, as shown in FIG. 4B, the first electrode active material layer 3 is formed by immersing the first electrode current collector 2 on which the first electrode active material layer 3 is formed in the separator paste 4a. The separator paste 4a is applied to the surface of Then, the separator layer 4 is formed on the surface of the first electrode active material layer 3 by scraping off excess separator paste 4a adhering to a thickness greater than necessary by passing through a punching machine 12, and then drying. To do.
次に図４（ｃ）に示すとおり、セパレーター層４および第１の電極活物質層３が形成された第１の電極集電体２を、第２の電極活物質ペースト５ａに浸漬することにより、セパレーター層４の表面に第２の電極活物質ペースト５ａを塗布する。そして、押し抜き機１２に通すことにより、必要以上の厚みで付着した余分な第２の電極活物質ペースト５ａを削ぎ落とし、その後に乾燥することによりセパレーター層４の表面に第２の電極活物質層５を形成する。このような製造過程を経て基本セル１が作製される。 Next, as shown in FIG. 4C, by immersing the first electrode current collector 2 on which the separator layer 4 and the first electrode active material layer 3 are formed in the second electrode active material paste 5a. Then, the second electrode active material paste 5 a is applied to the surface of the separator layer 4. Then, by passing through a punching machine 12, excess second electrode active material paste 5a adhering to an unnecessarily thick thickness is scraped off and then dried to form a second electrode active material on the surface of the separator layer 4 Layer 5 is formed. The basic cell 1 is manufactured through such a manufacturing process.
次に図４（ｄ）に示すとおり、基本セル１を、金粉末を分散させたスラリー６ａ中に浸漬することにより、基本セル１の表面にスラリー６ａを塗布する。そして、押し抜き機１２に通すことにより、必要以上の厚みで付着した余分なスラリー６ａを削ぎ落とし、その後に乾燥することにより基本セル１の表面に金粒子と金粒子間の空隙部からなる多孔性導電体層６が形成される。 Next, as shown in FIG. 4 (d), the basic cell 1 is immersed in a slurry 6 a in which gold powder is dispersed to apply the slurry 6 a to the surface of the basic cell 1. Then, by passing through the punching machine 12, excess slurry 6a adhering to an unnecessarily thick thickness is scraped off, and then dried to form a porous structure comprising gold particles and voids between the gold particles on the surface of the basic cell 1. Conductive conductor layer 6 is formed.
次に図５（ａ）に示すように、多孔性導電体層が形成された基本セル１を渦巻き状に捲回する。 Next, as shown in FIG. 5A, the basic cell 1 in which the porous conductor layer is formed is wound in a spiral shape.
次に図５（ｂ）に示すように、多孔性導電体層が形成され、渦巻き状に捲回された基本セル１を、表面に導電性接着剤が塗布されたシート状の第２の電極集電体７の上に配置した後に導電性接着剤を乾燥させて、第２の電極集電体７上に基本セル１を固定する。このようにすることで、第２の電極集電体７と基本セル１の間で、多孔性導電体層を主たる媒体として電気的接続をとることができ、導電性接着剤を媒体として機械的接続をとることができる。 Next, as shown in FIG. 5B, the basic cell 1 formed with a porous conductor layer and wound in a spiral shape is used as a sheet-like second electrode having a surface coated with a conductive adhesive. After disposing on the current collector 7, the conductive adhesive is dried to fix the basic cell 1 on the second electrode current collector 7. By doing so, electrical connection can be established between the second electrode current collector 7 and the basic cell 1 using the porous conductor layer as the main medium, and mechanically using the conductive adhesive as the medium. A connection can be made.
次に図５（ｃ）に示すように、基本セル１端部の第1の電極活物質層、セパレーター層、第２の電極物質層、多孔性導電体層を除去して第１の電極集電体２を露出させる。 Next, as shown in FIG. 5C, the first electrode active material layer, the separator layer, the second electrode material layer, and the porous conductor layer at the end of the basic cell 1 are removed to remove the first electrode assembly. The electric body 2 is exposed.
次に図５（ｄ）に示すように、第１の電極集電体２と第１のリード端子８を接続する。また、第２の電極集電体７と第２のリード端子９を接続し、いずれか一方の端子を正極とし、他方を負極とする。 Next, as shown in FIG. 5D, the first electrode current collector 2 and the first lead terminal 8 are connected. Further, the second electrode current collector 7 and the second lead terminal 9 are connected, and one of the terminals is a positive electrode and the other is a negative electrode.
そして図５（ｅ）に示すように、電極集電体７と接続された基本セル１を、外装体１０の内部に収容し、外装体１０の内部に電解液を注入することにより、多孔性導電体層を介して基本セル内に電解液が含浸される。このような製造工程を経て本発明に係る電気化学デバイス１１が作製される。 And as shown in FIG.5 (e), the basic cell 1 connected with the electrode electrical power collector 7 is accommodated in the exterior body 10, and by inject | pouring electrolyte solution into the exterior body 10, it is porous. An electrolytic solution is impregnated in the basic cell through the conductor layer. The electrochemical device 11 according to the present invention is manufactured through such a manufacturing process.
以上のように本実施形態に示す電気化学デバイスおよびその製造方法によれば、電解液を基本セルの外部から含浸するため、電解液の注入が容易である。また、多孔性導電体層に電解液が含浸することにより、流動性が向上するため、充放電時の電荷移動が速く、内部抵抗が低下する。 As described above, according to the electrochemical device and the manufacturing method thereof shown in the present embodiment, since the electrolytic solution is impregnated from outside the basic cell, the injection of the electrolytic solution is easy. Moreover, since the fluidity is improved by impregnating the porous conductor layer with the electrolytic solution, the charge transfer during charge / discharge is fast, and the internal resistance is reduced.
なお、この実施形態に示した電気化学デバイスの実施形態およびその製造方法は一例であって、これ以外にもこの発明内容の範囲内であれば種々の変形を行なうことは差し支えない。 It should be noted that the embodiment of the electrochemical device and the manufacturing method thereof shown in this embodiment are merely examples, and other various modifications may be made within the scope of the present invention.
本実施形態では、一つの基本セルを用いるようにしたが、図６に示すように基本セル１を複数準備し、複数の基本セル１が、多孔性導電体層６を介して、互いに接続されるようにしても良い。このようにすることで内部抵抗をより低くすることができる。 In this embodiment, one basic cell is used. However, as shown in FIG. 6, a plurality of basic cells 1 are prepared, and the plurality of basic cells 1 are connected to each other via the porous conductor layer 6. You may make it. By doing so, the internal resistance can be further reduced.
また、第１の電極集電体は、炭素繊維であっても良い。炭素繊維を用いることで、負極集電体が高強度、高弾性率になるためデバイスの強度向上に寄与できる。また、炭素繊維は、表面に酸化層が形成されにくいため、第１の電極活物質層との接触抵抗を低減することができる。 The first electrode current collector may be carbon fiber. By using carbon fiber, the negative electrode current collector has high strength and high elastic modulus, which can contribute to improvement of device strength. In addition, since an oxidized layer is hardly formed on the surface of the carbon fiber, the contact resistance with the first electrode active material layer can be reduced.
また、多孔性導電体層は、導電性セラミック粉末やアルミニウム粉末や炭素粉末を分散させたスラリーから形成しても良い。 The porous conductor layer may be formed from a slurry in which conductive ceramic powder, aluminum powder, or carbon powder is dispersed.
また、本実施形態では、第１の電極集電体に対し、第１の電極活物質ペースト、セパレーターペースト、第２の電極活物質ペーストを塗布する際、第１の電極集電体を、ペースト中に浸漬して塗布するようにしたが、ペーストをスプレーで第１の電極集電体に噴霧するようにして塗布しても良い。 In this embodiment, when the first electrode active material paste, the separator paste, and the second electrode active material paste are applied to the first electrode current collector, the first electrode current collector is used as the paste. It was soaked in and applied, but the paste may be applied by spraying the first electrode current collector.
また、本実施形態では、外装体へ電極集電体と接続された基本セルを収容した後に、外装体の内部へ電解液を注入するようにしたが、外装体へ電極集電体と接続された基本セルを収容する前に外装体内部へ電解液を注入しても良い。 Further, in this embodiment, after the basic cell connected to the electrode current collector is accommodated in the exterior body, the electrolyte is injected into the interior of the exterior body. However, the electrode current collector is connected to the exterior body. Alternatively, the electrolytic solution may be injected into the exterior body before accommodating the basic cell.
また、本発明に係る電気化学デバイスは、電気二重層キャパシタや電池として機能させることができる。 Moreover, the electrochemical device according to the present invention can function as an electric double layer capacitor or a battery.
この発明におけるさらに具体的な実施例について以下に説明する。 More specific embodiments of the present invention will be described below.
φ１８μm アルミニウムワイヤを日立粉末冶金製活性炭ペースト（ＧＡ−１０００）に浸漬することにより、アルミニウムワイヤ表面に活性炭ペーストを塗布する。そして、押し抜き機に通すことにより、必要以上の厚みで付着した余分な活性炭ペーストを、削ぎ落とした後に乾燥することによりアルミニウムワイヤ表面に厚み２０μmの第１の活性炭層を形成する。 The activated carbon paste is applied to the surface of the aluminum wire by immersing the φ18 μm aluminum wire in activated carbon paste (GA-1000) made by Hitachi Powdered Metallurgy. Then, by passing through a punching machine, excess activated carbon paste adhering to an unnecessarily thick thickness is scraped off and dried to form a first activated carbon layer having a thickness of 20 μm on the aluminum wire surface.
次に、第１の活性炭層が形成されたワイヤを、酸化アルミニウム粉末ペーストに浸漬することにより、第１の活性炭層の表面に酸化アルミニウム粉末ペーストを塗布する。そして、押し抜き機に通すことにより、必要以上の厚みで付着した余分な酸化アルミニウム粉末ペーストを削ぎ落とした後に乾燥することにより第１の活性炭層の表面に酸化アルミニウムからなるセパレーター層を形成する。 Next, the aluminum oxide powder paste is applied to the surface of the first activated carbon layer by immersing the wire on which the first activated carbon layer is formed in the aluminum oxide powder paste. Then, by passing through a punching machine, the excess aluminum oxide powder paste adhering to a thickness more than necessary is scraped off and dried to form a separator layer made of aluminum oxide on the surface of the first activated carbon layer.
次に、酸化アルミニウムからなるセパレーター層および第１の活性炭層が形成されたワイヤを、日立粉末冶金製活性炭ペースト（ＧＡ−１０００）に浸漬することにより、酸化アルミニウムからなるセパレーター層の表面に活性炭ペーストを塗布する。そして、押し抜き機に通すことにより、必要以上の厚みで付着した余分な活性炭ペーストを削ぎ落とした後に乾燥することにより酸化アルミニウムからなるセパレーター層の表面に厚み７μmの第２の活性炭電極層を形成する。このような製造過程を経て基本セルが作製される。 Next, the activated carbon paste is formed on the surface of the separator layer made of aluminum oxide by immersing the wire on which the separator layer made of aluminum oxide and the first activated carbon layer are formed in activated carbon paste (GA-1000) made by Hitachi Powder Metallurgy. Apply. Then, by passing through a punching machine, excess activated carbon paste adhering to a thickness greater than necessary is scraped off and dried to form a second activated carbon electrode layer having a thickness of 7 μm on the surface of the separator layer made of aluminum oxide. To do. A basic cell is manufactured through such a manufacturing process.
次に、基本セルを、金粉末を分散させたスラリー中に浸漬することにより、基本セルの表面に導電性セラミック粉末スラリーを塗布する。そして、押し抜き機に通すことにより、必要以上の厚みで付着した余分な導電性セラミック粉末スラリーを削ぎ落とした後に乾燥することにより基本セルの表面に導電性セラミック粉末からなる多孔性導電体層を形成する。 Next, the conductive ceramic powder slurry is applied to the surface of the basic cell by immersing the basic cell in a slurry in which gold powder is dispersed. Then, by passing through a punching machine, scraping off the excess conductive ceramic powder slurry adhering to a thickness more than necessary, and drying the porous conductor layer made of conductive ceramic powder on the surface of the basic cell. Form.
次に、多孔性導電体層が形成された基本セルを渦巻き状に捲回し、表面に日立粉末治金製黒鉛系導電性接着剤（ＧＡ−７０３）が塗布された、１０ｍｍ角の集電箔に配置する。そして、導電性接着剤を乾燥させて、集電箔上に基本セルを固定する。 Next, the basic cell in which the porous conductor layer is formed is wound in a spiral shape, and a 10 mm square current collector foil having a graphite conductive adhesive (GA-703) made by Hitachi Powdered Metal Co., Ltd. applied to the surface. To place. Then, the conductive adhesive is dried to fix the basic cell on the current collector foil.
次に、基本セル端部に被覆された第１の活性炭電極層、酸化アルミニウムからなるセパレーター層、第２の活性炭電極層、多孔性導電体層を除去して露出させたアルミニウムワイヤと集電箔の端部を、それぞれ負極リード端子、正極リード端子に接続した後、集電箔に接続された基本セルをパッケージ内部に収容し、パッケージ内部に電解液を注入することにより、電気二重層キャパシタが作製される。 Next, the first activated carbon electrode layer coated on the end of the basic cell, the separator layer made of aluminum oxide, the second activated carbon electrode layer, and the aluminum wire exposed by removing the porous conductor layer and the current collector foil Are connected to the negative electrode lead terminal and the positive electrode lead terminal, respectively, and then the basic cell connected to the current collector foil is accommodated inside the package, and an electrolytic solution is injected into the package, whereby an electric double layer capacitor is obtained. Produced.
１ 基本セル
２、５０２ 第１の電極集電体
３、５０３ 第１の電極活物質層
３ａ 第１の電極活物質ペースト
４、５０４ セパレーター層
４ａ セパレーターペースト
４ｂ 水
５、５０５ 第２の電極活物質層
５ａ 第２の電極活物質ペースト
６ 多孔性導電体層
６ａ 金粉末を分散させたスラリー
７、５０７ 第２の電極集電体
８ 負極リード端子
９ 正極リード端子
１０ 内部に電解液を有する外装体
１１ 本発明に係る電気化学デバイス
１２ 押し抜き機
DESCRIPTION OF SYMBOLS 1 Basic cell 2, 502 1st electrode collector 3, 503 1st electrode active material layer 3a 1st electrode active material paste 4, 504 Separator layer 4a Separator paste 4b Water 5, 505 2nd electrode active material Layer 5a Second electrode active material paste 6 Porous conductor layer 6a Slurries 7, 507 in which gold powder is dispersed Second electrode current collector 8 Negative electrode lead terminal 9 Positive electrode lead terminal 10 Exterior body having electrolyte inside 11 Electrochemical device according to the present invention 12 Punching machine
Claims (14)
前記第１の電極集電体表面を被覆する第１の電極活物質層と
前記第１の電極活物質表面を被覆するセパレーター層と
前記セパレーター層表面を被覆する第２の電極活物質層
からなる基本セルを備え、
前記基本セルが、多孔性導電体層を介してシート状の第２の電極集電体と電気的に接続されており、
前記第２の電極集電体と接続された基本セルと電解液が外装体に収容されていることを特徴とする電気化学デバイス。 A linear first electrode current collector, a first electrode active material layer covering the surface of the first electrode current collector, a separator layer covering the surface of the first electrode active material, and the surface of the separator layer A basic cell comprising a second electrode active material layer to be coated;
The basic cell is electrically connected to the sheet-like second electrode current collector through a porous conductor layer;
An electrochemical device, wherein a basic cell connected to the second electrode current collector and an electrolytic solution are accommodated in an exterior body .
前記第１の電極集電体の表面に第１の電極活物質を付与した後に乾燥することにより、第１の電極活物質層を形成する工程と、
前記第１の電極活物質層の表面にセパレーターを付与した後に乾燥することにより、セパレーター層を形成する工程と、
前記セパレーター層の表面に第２の電極活物質を付与した後に乾燥することにより、第２の電極活物質層を形成することにより基本セルを作製する工程と、
前記基本セル表面に多孔質導電体を付与した後に乾燥することにより、多孔質導電体層を形成する工程と、
前記多孔質導電体層を介して、前記基本セルとシート状の第２の電極集電体を電気的に接続する工程と、
前記第２の電極集電体と電気的に接続された基本セルと電解液を外装体に収容する工程を有することを特徴とする電気化学デバイスの製造方法。 Preparing a linear first electrode current collector;
Forming a first electrode active material layer by applying a first electrode active material to the surface of the first electrode current collector and then drying,
Forming a separator layer by applying a separator to the surface of the first electrode active material layer and then drying the separator;
Providing a second electrode active material on the surface of the separator layer and then drying to form a basic cell by forming a second electrode active material layer; and
Forming a porous conductor layer by applying a porous conductor to the surface of the basic cell and then drying,
Electrically connecting the basic cell and the sheet-like second electrode current collector through the porous conductor layer;
Method for producing an electrochemical device, comprising a step of accommodating the electrolyte solution and the second electrode current collector electrically connected to the basic cells in the outer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009204823A JP5348414B2 (en) | 2009-09-04 | 2009-09-04 | Electrochemical device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009204823A JP5348414B2 (en) | 2009-09-04 | 2009-09-04 | Electrochemical device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011054891A JP2011054891A (en) | 2011-03-17 |
| JP5348414B2 true JP5348414B2 (en) | 2013-11-20 |
Family
ID=43943577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009204823A Expired - Fee Related JP5348414B2 (en) | 2009-09-04 | 2009-09-04 | Electrochemical device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5348414B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103875112B (en) * | 2011-10-13 | 2015-09-09 | 株式会社Lg化学 | Cable Type Rechargeable Battery |
| EP2768057B1 (en) * | 2011-10-13 | 2016-08-31 | LG Chem, Ltd. | Cable-type secondary battery |
| CN103875113B (en) * | 2011-10-13 | 2016-06-29 | 株式会社Lg化学 | Cable Type Rechargeable Battery |
| KR101453779B1 (en) * | 2011-10-13 | 2014-10-21 | 주식회사 엘지화학 | Cable-Type Secondary Battery |
| JP5810224B2 (en) * | 2011-10-13 | 2015-11-11 | エルジー・ケム・リミテッド | Cable type secondary battery |
| JP5961277B2 (en) * | 2012-10-11 | 2016-08-02 | エルジー・ケム・リミテッド | Cable type secondary battery |
| US10121607B2 (en) * | 2013-08-22 | 2018-11-06 | Corning Incorporated | Ceramic separator for ultracapacitors |
| KR101792602B1 (en) | 2013-12-03 | 2017-11-01 | 주식회사 엘지화학 | Battery Cell Having Electrode Assembly with Minimized Number of Reiteration of Current Collector |
| JP6217987B2 (en) | 2015-06-15 | 2017-10-25 | トヨタ自動車株式会社 | Assembled battery |
| US9741499B2 (en) * | 2015-08-24 | 2017-08-22 | Nanotek Instruments, Inc. | Production process for a supercapacitor having a high volumetric energy density |
| EP3349293B1 (en) * | 2016-01-07 | 2020-07-15 | LG Chem, Ltd. | Apparatus and method for manufacturing cable-type secondary battery and cable-type secondary battery manufactured by the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114314A (en) * | 1980-02-14 | 1981-09-08 | Nichicon Capacitor Ltd | Linear double layer capacitor |
| JPS63232309A (en) * | 1987-03-20 | 1988-09-28 | 太陽誘電株式会社 | Electric double-layer capacitor |
| JPH02143779U (en) * | 1989-05-09 | 1990-12-06 | ||
| JPH0359630U (en) * | 1989-10-17 | 1991-06-12 | ||
| JPH0888019A (en) * | 1994-09-20 | 1996-04-02 | Sony Corp | Sealed storage battery |
| KR100625892B1 (en) * | 2004-04-12 | 2006-09-20 | 경상대학교산학협력단 | Thread-type flexible battery |
-
2009
- 2009-09-04 JP JP2009204823A patent/JP5348414B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011054891A (en) | 2011-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5348414B2 (en) | Electrochemical device and manufacturing method thereof | |
| US5449574A (en) | Electical device having alternating layers of fibrous electrodes | |
| US5492782A (en) | Battery having fiber electrodes | |
| JP6134917B2 (en) | Capacitors | |
| JP5779387B2 (en) | Electrochemical devices | |
| JPWO2019087692A1 (en) | Electrolytic capacitors and their manufacturing methods | |
| KR20180109709A (en) | Electrochemical device | |
| KR20050029126A (en) | Battery including carbon foam current collectors | |
| JPH09134726A (en) | Collector of electrochemical element, and manufacture of electrochemical element and collector of electrochemical element | |
| KR102136599B1 (en) | Electrochemical device | |
| JP2015109329A (en) | Method for forming solid electrolytic capacitor | |
| JP2017111924A (en) | All-solid-state battery | |
| JP2009272585A (en) | Electrochemical capacitor | |
| JP2013206705A (en) | Power storage device, secondary battery and manufacturing method of power storage device | |
| CN1407647A (en) | Closed battery | |
| CN103500665A (en) | Super capacitor with core-shell type electrodes | |
| JP2007115799A (en) | Electric double layer capacitor | |
| CN107710474A (en) | Improved high power capacity rechargeable battery | |
| JP5875129B2 (en) | Electrochemical devices | |
| CA2967543A1 (en) | Fast charge apparatus for a battery | |
| JP2010199502A (en) | Winding capacitor and manufacturing method of the same | |
| KR100975919B1 (en) | Method for forming external electrode of tantal condenser | |
| JP2017022222A (en) | Solid electrolytic capacitor and manufacturing method of the same | |
| RU169539U1 (en) | LITHIUM ION BATTERY | |
| JP7266798B2 (en) | electric double layer capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120618 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130422 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130507 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130701 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130724 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130806 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5348414 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |