JP4326079B2 - Cylindrical electric double layer capacitor - Google Patents

Cylindrical electric double layer capacitor Download PDF

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JP4326079B2
JP4326079B2 JP22671899A JP22671899A JP4326079B2 JP 4326079 B2 JP4326079 B2 JP 4326079B2 JP 22671899 A JP22671899 A JP 22671899A JP 22671899 A JP22671899 A JP 22671899A JP 4326079 B2 JP4326079 B2 JP 4326079B2
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electrode
separator
cylindrical
positive
strip
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JP2001052974A (en )
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茂樹 小山
実 野口
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本田技研工業株式会社
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/13Ultracapacitors, supercapacitors, double-layer capacitors

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical electric double-layered capacitor with increased electrostatic capacity and superior durability. SOLUTION: A cylindrical electric double-layered capacitor 1 comprises an electrode wound body 3, wherein a laminated object A with a band-like positive pole 12 and a band-like negative pole 15 stacked together with a first separator 13 in between and one of the band-like positive and negative poles 12 and 15, is stacked to a second separator 16 is wound in spiral, such that the second separator 16 is positioned on the outermost side, and a vessel 2 for housing the electrode wound body 3. A cylindrical electrode 18 is provided at the inside surface of the vessel 2, which faces the outside surface of the electrode wound body 3. The polarity of the cylindrical electrode 18 is a part of one of the band-like positive and negative poles 12 and 15, while being disposed opposite to the polarity of one positioned on the outermost side of the electrode wound body 3.

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は筒型電気二重層コンデンサ、特に、帯状正極と帯状負極とを第1のセパレータを挟んで重ね合せ、また帯状正、負極の一方に第2のセパレータを重ね合せた重ね合せ物を、第2のセパレータが最外側に位置するように渦巻状に巻回した電極巻回体と、その電極巻回体を収容する容器を備えた筒型電気二重層コンデンサであって、帯状正極が、第1の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成され、帯状負極が、第2の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成されるものに関する。 The present invention is cylindrical electric double-layer capacitor, in particular, across the first separator and a positive electrode strip and a strip-shaped negative electrode overlay, also a strip positive, overlapping product was superposed second separator on one of the negative electrode, second separator is a cylindrical electric double-layer capacitor having the electrode winding body wound in a spiral shape so as to be positioned on the outermost side, and a container for accommodating the electrode winding body, is strip-shaped positive electrode is composed of a pair of strip-shaped polarizable electrodes respectively joined to both surfaces of the first strip-shaped current collector, strip-shaped negative electrode is composed of a pair of strip-shaped polarizable electrodes joined on both sides of the second band-like current collector on shall.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
前記構成の電極巻回体においては、帯状正、負極の一方の一部であって、最外周に位置するもの、つまり最後の一周分の環状外周面がそれと対向する相手電極を持たない。 In the electrode winding body of the structure, the strip positive, a portion of one of the negative electrode, those located in the outermost periphery, that is no counterpart electrode annular outer peripheral surface of the last one round is the same faces.
【0003】 [0003]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
前記従来例においては、前記一周分の環状外周面が静電容量確保に関与せずに無用と化しており、またその帯状正、負極の電極利用量の異なりは電位の不均衡を招き、性能を劣化させる原因となる、といった不具合があった。 In the conventional example, the annular outer peripheral surface of one round has become a useless not participate in capacitance ensured, also unlike the strip positive electrode usage of the negative electrode lead to imbalance potential, performance becomes a cause of deterioration of the, there was a problem such.
【0004】 [0004]
【課題を解決するための手段】 In order to solve the problems]
本発明は電極巻回体の帯状正、負極の両面全体を静電容量確保のために有効に利用し、またこの帯状正、負極の電極利用量の同一化により性能の劣化を極力抑制し得るようにした前記筒型電気二重層コンデンサを提供することを目的とする。 The present invention is the strip positive electrode winding body, effectively utilizing the entire both surfaces of the negative electrode for the capacitance ensured, also be belt-like positive, minimizing performance degradation of the same of the electrode usage of the anode and to provide the tubular type electric double layer capacitor as.
【0005】 [0005]
前記目的を達成するため請求項1の発明によれば、帯状正極と帯状負極とを第1のセパレータを挟んで重ね合せ、また帯状正、負極の一方に第2のセパレータを重ね合せた重ね合せ物を、前記第2のセパレータが最外側に位置するように渦巻状に巻回した電極巻回体と、その電極巻回体を収容する容器を備えた筒型電気二重層コンデンサであって、前記帯状正極が、第1の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成され、前記帯状負極が、第2の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成されるものにおいて、前記電極巻回体の外周面と対向する前記容器の内周面に、メソフェーズピッチ由来のアルカリ賦活炭により形成されて前記第2のセパレータに接触する円筒型電極を設け、その According to the present invention for achieving the above object, superimposing a positive electrode strip and a strip-shaped negative electrode across the first separator, also strip positive, it superimposed the second separator on one of the negative electrode overlay things, the second separator is a cylindrical electric double-layer capacitor having the electrode winding body wound in a spiral shape so as to be positioned on the outermost side, and a container for accommodating the electrode winding body the positive electrode strip is composed of a pair of strip-shaped polarizable electrodes respectively joined to both surfaces of the first strip-shaped current collector, wherein the strip-shaped negative electrode, a pair of strip joined on both sides of the second band-like current collector in those constituted from the polarizable electrode, the inner peripheral surface of the container that faces an outer circumferential surface of the electrode winding body, cylindrical in contact is formed by alkali activation coal from mesophase pitch in the second separator the electrode is provided, that 筒型電極の極性を、前記帯状正、負極の一方の一部であって、前記電極巻回体の最外周に位置するものの極性と逆に設定したことを特徴とする筒型電気二重層コンデンサが提供され、また請求項2の発明によれば、請求項1の発明の前記構成に加えて、前記円筒型電極を膨潤させて前記第2のセパレータに密着させることを特徴とする筒型電気二重層コンデンサが提供される。 The polarity of the cylindrical electrode, the strip positive, a portion of one of the negative electrode, cylindrical electric double-layer capacitor characterized in that set to a polarity opposite of those located at the outermost periphery of the electrode winding body There is provided, According to the second aspect of the invention, in addition to the configuration of the invention of claim 1, cylindrical electrical, characterized in that is brought into close contact with the second separator swell the cylindrical electrode double-layer capacitor is provided.
【0006】 [0006]
前記のように構成すると、電極巻回体における帯状正、負極の一方の一部であって、最後の一周分の環状外周面が、それと極性を異にする容器の円筒型電極と第2のセパレータを挟んで対向して相手電極を持つこととなり、その際にメソフェーズピッチ由来のアルカリ賦活炭により形成される上記円筒型電極は膨潤して第2のセパレータに密着することができる。 With the configuration as described above, the strip positive in the electrode winding body, a portion of one of the negative electrode, the last one round annular outer peripheral surface therewith containers having different polarity cylindrical electrode and the second face each other across the separator will have a counterpart electrode, the above-mentioned cylindrical electrode which is formed by alkali activation coal from mesophase pitch in can be in close contact with the second separator swells. これにより電極巻回体の帯状正、負極の両面全体を静電容量確保のために有効に利用してその静電容量を従来例よりも増加させることができる。 Thereby the strip positive electrode winding body, the electrostatic capacitance by utilizing effectively for capacitance ensure total both sides of the negative electrode can be increased than the conventional example. また帯状正、負極の電極利用量の同一化により、電気二重層コンデンサの性能の劣化を極力抑制することが可能である。 The strip positive, the same of the electrode usage of the negative electrode, a degradation of performance of the electric double layer capacitor can be suppressed as much as possible.
【0007】 [0007]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
図1、2において、筒型、図示例では円筒型をなす電気二重層コンデンサ1は、容器2と、その容器2内に収容された電極巻回体3と、その容器2内に注入された電解液とを有する。 1 and 2, cylindrical, in the illustrated example electric double-layer capacitor 1 having a cylindrical type, a container 2, an electrode winding body 3 accommodated in the container 2, which is injected into the container 2 and an electrolyte solution. 容器2はAl合金製有底筒型本体4と、その一端開口部を閉鎖する端子板5とよりなり、その端子板5に正、負端子6、7と安全弁8とが設けられている。 Container 2 and Al alloy bottomed tubular body 4, be more a terminal plate 5 for closing the opening at one end, the positive to the terminal plate 5, and the negative terminal 6 and a safety valve 8 are provided.
【0008】 [0008]
電極巻回体3は、正極積層帯9と負極積層帯10とを有する。 Electrode winding body 3 includes a positive electrode laminated band 9 and the negative electrode laminated band 10. その正極積層帯9は、アルミ箔よりなる第1の帯状集電体11の両面に、それぞれ帯状分極性電極eを導電性接着剤を用いて貼付し、一方の帯状分極性電極eにPTFE(ポリテトラフルオロエチレン)よりなる第1のセパレータ13を重ね合せたものである。 Its positive laminated band 9, on both sides of the first strip current collector 11 made of aluminum foil, each attached with a conductive adhesive strip polarizable electrodes e, one strip polarizable electrodes e to PTFE ( is obtained by superposed first separator 13 made of polytetrafluoroethylene). これら一対の分極性電極eより帯状正極12が構成される。 Positive electrode strip 12 is composed of the pair of polarizable electrodes e. また第1のセパレータ13に電解液が含浸保持される。 The electrolytic solution is impregnated held in the first separator 13. 負極積層帯10は、アルミ箔よりなる第2の帯状集電体14の両面に、それぞれ帯状分極性電極eを導電性接着剤を用いて貼付し、一方の帯状分極性電極eにPTFEよりなる第2のセパレータ16を重ね合せたものである。 Negative electrode stacking zone 10, on both sides of the second band-like current collector 14 made of aluminum foil, each attached with a conductive adhesive strip polarizable electrodes e, made of PTFE on one strip polarizable electrodes e it is obtained by superimposing the second separator 16. これら一対の分極性電極eより帯状負極15が構成される。 Strip-shaped negative electrode 15 is composed of the pair of polarizable electrodes e. また第2のセパレータ16に電解液が含浸保持される。 The electrolytic solution is impregnated held in the second separator 16.
【0009】 [0009]
電極巻回体3の製造に当っては、負極積層帯10の、露出している分極性電極eに正極積層帯9の第1のセパレータ13を重ね合せる。 It is hitting the manufacture of the electrode winding body 3, the negative electrode stacking zone 10, superposed first separator 13 of the positive electrode laminated band 9 into polarizable electrodes e exposed. これにより、図3に示すように、帯状正極12と帯状負極15とを第1のセパレータ13を挟んで重ね合せると共に帯状正、負極12,15の一方、図示例では帯状負極15に第2のセパレータ16を重ね合せた重ね合せ物Aが構成される。 Thus, as shown in FIG. 3, strip positive with superimposed a positive electrode strip 12 and the strip-shaped negative electrode 15 across the first separator 13, one of the negative electrode 12 and 15, the second to the strip-shaped negative electrode 15 in the illustrated example overlapping product a was superposed separator 16 is constituted. この重ね合せ物Aを、負極積層帯10の第2のセパレータ16が最外側に位置するように渦巻き状に巻回するものである。 The superposition was A, the second separator 16 of the negative electrode stacking zone 10 in which is wound spirally so as to be positioned on the outermost side.
【0010】 [0010]
帯状正極12および帯状負極15は、静電容量の増加を図るべく、メソフェーズピッチを原料とするアルカリ賦活炭を主成分として構成される。 Positive electrode strip 12 and strip-shaped negative electrode 15, to achieve an increase in capacitance, and the alkali activation coal to a mesophase pitch as a raw material as a main component. 電解液としては、ホウフッ化第4アンモニウム化合物、例えばTEMA・BF 4 [(C 253 CH 3 N・BF 4 (ホウフッ化トリエチルメチルアンモニウム)、溶質]のPC(プロピレンカーボネート、溶媒)溶液が用いられる。 As an electrolytic solution, quaternary ammonium compounds fluoroborate, e.g. TEMA · BF 4 [(C 2 H 5) 3 CH 3 N · BF 4 ( borofluoride triethylmethylammonium), solute] of PC (propylene carbonate, a solvent) solution It is used.
【0011】 [0011]
有底筒型本体4の内周面がAl合金面である電気二重層コンデンサ1において充電を行うと、図4に示すように、電極巻回体3における帯状負極15の最後の一周分の環状外周面17が静電容量確保に関与せずに無用と化している。 When the inner peripheral surface of the bottomed tubular body 4 for charging the electric double layer capacitor 1 is Al alloy surface, as shown in FIG. 4, the end of one revolution of the annular strip-shaped negative electrode 15 in the electrode winding body 3 the outer peripheral surface 17 has become a useless not participate in capacitance ensured.
【0012】 [0012]
そこで、図2、5に示すように、電極巻回体3の外周面と対向する容器2の内周面、したがって有底筒型本体4の内周面に筒型、図示例では円筒型電極18を設け、その円筒型電極18の極性を、帯状正、負極12,15の一方、図示例は帯状負極15の一部であって、電極巻回体3の最外周に位置するものの極性と逆、つまり正極に設定したものである。 Therefore, as shown in FIG. 2 and 5, the outer peripheral surface and the inner peripheral surface of the opposing container 2 of the electrode winding body 3, thus the bottomed tubular body inner peripheral surface in a cylindrical-type 4, cylindrical electrode in the illustrated example 18 is provided, the polarity of the cylindrical electrode 18, strip-shaped positive and one negative electrode 12 and 15, the illustrated example is a part of a strip-shaped negative electrode 15, the polarity of those located at the outermost periphery of the electrode winding body 3 Conversely, that is obtained by setting the positive electrode.
【0013】 [0013]
前記のように構成すると、電極巻回体3における帯状負極15の最後の一周分の環状外周面17が、それと極性を異にする容器2の円筒型電極18と第2のセパレータ16を挟んで対向して相手電極を持つ。 By configuring as above, the last one revolution of the annular outer peripheral surface 17 of the strip-shaped negative electrode 15 in the electrode winding body 3, the same across the cylindrical electrode 18 of differing container 2 the polarity of the second separator 16 opposed to having an opponent electrode. これにより、電極巻回体3の帯状正、負極12,15の両面全体を静電容量確保のために有効に利用してその静電容量を従来例よりも増加させることができる。 Thus, the strip positive electrode winding body 3, the electrostatic capacity by utilizing effectively for capacitance ensure overall surfaces of the negative electrode 12 and 15 can be increased than the conventional example. また帯状正、負極12,15の電極利用量の同一化により電気二重層コンデンサ1の性能の劣化を極力抑制することができる。 Also it is possible to strip positive, as much as possible to suppress the deterioration of the performance of electric double-layer capacitor 1 by the same of the electrode usage of the negative electrode 12 and 15.
【0014】 [0014]
円筒型電極18を、メソフェーズピッチを原料とするアルカリ賦活炭を用いて形成した場合、その極性は前記のように正極に設定される。 The cylindrical electrode 18, when formed using the alkali activation coal to a mesophase pitch as a raw material, its polarity is set to positive as described above. これにより、正極側の酸化電流を下げて、その耐久性を向上させ、また円筒型電極18を膨潤させて第2のセパレータ16に密着させることができる。 Thus, lowering the oxidation current of the positive electrode side, to improve its durability, also it can be brought into close contact with the second separator 16 by swelling the cylindrical electrode 18.
【0015】 [0015]
以下、具体例について説明する。 The following describes a specific example.
【0016】 [0016]
先ず、活性炭として、メソフェーズピッチを原料とするアルカリ賦活炭、実施例ではKOH賦活炭を次のような方法で製造した。 First, as the activated carbon, the alkali activated carbon for a mesophase pitch as a raw material, in the embodiment was produced KOH activated carbon in the following manner.
(a)塊状をなすメソフェーズピッチに室温下で粉砕処理を施して平均粒径300μmの粉砕粉を製造し、次いで粉砕粉に、大気気流中、350℃、2時間の不融化処理を施し、その後、粉砕粉に、窒素気流中、700℃、1時間の炭化処理を施して炭化粉を得た。 Subjected to pulverization treatment under room temperature mesophase pitch forming the (a) bulk to produce a pulverized powder having an average particle diameter of 300 [mu] m, then the pulverized powder is subjected in the air stream, 350 ° C., the infusibilized of 2 hours, then , the pulverized powder in a nitrogen stream, 700 ° C., to obtain a carbonized powder is subjected to carbonization for 1 hour.
(b)炭化粉と、その炭素重量の2倍量のKOHとを混合し、次いで混合物に窒素雰囲気中、800℃、5時間のアルカリ賦活処理としてのカリウム賦活処理を施し、その後、混合物の、塩酸による中和、洗浄及び乾燥といった後処理を行ってKOH賦活炭を得た。 And (b) carbonized powder was mixed with 2 volumes of KOH of its carbon weight and then in a nitrogen atmosphere to the mixture, 800 ° C., subjected to a potassium activating treatment as alkali activation treatment of 5 hours, then the mixture neutralization with hydrochloric acid, by performing a post-treatment such as washing and drying to obtain a KOH activated charcoal.
(c)KOH賦活炭にジェットミルによる粉砕処理を施して、平均粒径30μmの微細なKOH賦活炭を得た。 In (c) KOH activated carbon is subjected to pulverization treatment with a jet mill to obtain fine KOH activated carbon having an average particle size of 30 [mu] m. 以下、この微細KOH賦活炭を単にKOH賦活炭と言う。 Hereinafter simply referred to as KOH activated charcoal this fine KOH activated charcoal.
〔例−I〕 EXAMPLE -I]
KOH賦活炭、黒鉛粉末(導電フィラ)およびPTFE(バインダ)を85:12.5:2.5の重量比となるように秤量し、次いでその秤量物を混練し、その後、混練物を用いて圧延を行うことにより厚さ175μmの電極シートを製作した。 KOH activated charcoal, graphite powder (conductive filler) and PTFE (binder) 85: 12.5 were weighed so as to be 2.5 weight ratio, followed by kneading the weighed materials, then, using the kneaded material It was produced an electrode sheet having a thickness of 175μm by performing rolling.
【0017】 [0017]
この電極シートから幅95mm、長さ1500mmの2枚の帯状分極性電極eを切出し、次いでそれら分極性電極eを幅105mm、長さ1500mm、厚さ40μmの帯状集電体11の両面にそれぞれ導電性接着剤を用いて接着することにより帯状正極12を形成し、その後、一方の分極性電極eにPTFEよりなる厚さ75μmの第1のセパレータ13を重ね合せて正極積層帯9を構成した。 Width from the electrode sheet 95 mm, cut out two sheets of belt-shaped polarizable electrode e of length 1500 mm, then they polarizable electrodes e width 105 mm, length 1500 mm, respectively conducting to both sides of the belt-shaped collector 11 with a thickness of 40μm the positive electrode strip 12 is formed by bonding with sexual adhesive, then constitute a positive electrode stacking zone 9 superposed first separator 13 having a thickness of 75μm made of PTFE on one of the polarizable electrodes e.
【0018】 [0018]
次に、前記電極シートから幅95mm、長さ1500mmの2枚の帯状分極性電極eを切出し、次いでそれら分極性電極eを幅105mm、長さ1500mm、厚さ40μmの帯状集電体14の両面にそれぞれ導電性接着剤を用いて接着することにより帯状負極15を形成し、その後、一方の分極性電極eにPTFEよりなる厚さ75μmの第2のセパレータ16を重ね合せて負極積層帯10を構成した。 Next, the electrode from the sheet width 95 mm, cut out two sheets of belt-shaped polarizable electrode e of length 1500 mm, then they polarizable electrodes e width 105 mm, length 1500 mm, both surfaces of the belt-shaped collector 14 with a thickness of 40μm forming a strip-shaped negative electrode 15 by bonding with each conductive adhesive, then the negative electrode laminated band 10 superposed second separator 16 having a thickness of 75μm made of PTFE on one polarizable electrode e configuration was.
【0019】 [0019]
そして、負極積層帯10の、露出している帯状分極性電極eに正極積層帯9の第1のセパレータ13を重ね合せ、その重ね合せ物Aを、負極積層帯10の第2のセパレータ16が最外側に位置するように渦巻き状に巻回して電極巻回体3を製造した。 Then, the negative electrode stacking zone 10, overlapping the first separator 13 of the positive electrode laminated band 9 to band polarizable electrodes e exposed, the overlapping thereof A, the second separator 16 of the negative electrode stacking zone 10 was prepared electrode winding body 3 is wound spirally so as to be positioned on the outermost side.
【0020】 [0020]
一方、容器2における内径50mm、長さ130mmの有底筒型本体4内周面に、前記電極シートから切出された幅95mm、長さ157mmの分極性電極eを導電性接着剤を用いて接着することにより長さ95mm、厚さ175μmの円筒型電極18を形成した。 On the other hand, the inner diameter 50mm in the container 2, the bottomed tubular body 4 inner peripheral surface of the length 130 mm, width 95mm said cut out from the electrode sheet, using a conductive adhesive polarizable electrodes e length 157mm length 95mm by bonding, to form a cylindrical electrode 18 having a thickness of 175 .mu.m.
【0021】 [0021]
そして、電極巻回体3と、1.5モルのTEMA・BF 4をPC溶液に溶解した電解液とを有底筒型本体4内に入れ、その開口部を端子板5を用いて閉鎖した。 Then, an electrode winding body 3, the 1.5 moles of TEMA · BF 4 and an electrolyte dissolved in PC solution was placed in a bottomed tubular body 4, closed with terminal plate 5 and its opening . その閉鎖の際に、正極積層帯9および負極積層帯10の両集電体11,14は端子板5の正端子6および負端子7にそれぞれ接続され、また円筒型電極18は正端子6に接続される。 During its closure, both collector 11 and 14 of the positive electrode laminated band 9 and a negative electrode laminated band 10 is connected to the positive terminal 6 and a negative terminal 7 of the terminal plate 5, also cylindrical electrode 18 to the positive terminal 6 It is connected. この円筒型電気二重層コンデンサ1を実施例(1)とする。 The cylindrical electric double-layer capacitor 1 of Example (1). なお、図2において、重ね合せ物Aの巻終り端と円筒型電極18との間に比較的大きな空隙aが生じているが、この空隙aは作図上形成されたもので、実際には、重ね合せ物Aは極めて薄いので、このような空隙aは生じない。 In FIG. 2, but relatively large voids a is formed between the winding end end and a cylindrical electrode 18 of the overlay material A, the gap a is formed on the drawing, in fact, because overlay material A is very thin, such gap a is not generated.
〔例−II〕 EXAMPLE -II]
KOH賦活炭、黒鉛粉末(導電フィラ)ならびにPTFEおよびPVDF(ポリフッ化ビニリデン、バインダ)を80:12:2:6の重量比となるように秤量し、次いでその秤量物に、それの重量の5倍量のN−メチル−2−ピロリドン(溶剤)を加えて混合し、ペースト状電極混合物を得た。 KOH activated charcoal, graphite powder (conductive filler) and PTFE and PVDF (polyvinylidene fluoride binder) 80: 12: 2: 6 were weighed such that the weight ratio of then to the weighed materials, of its weight 5 added and mixed volumes of N- methyl-2-pyrrolidone (solvent), to obtain a paste-like electrode mixture. その電極混合物をドクタブレード法により、幅105mm、長さ1500mm、厚さ40μmの帯状集電体11の両面に幅95mm、長さ1500mm、厚さ220μmにそれぞれ塗布し、次いで圧延を行って、厚さ175μmの2枚の帯状分極性電極eよりなる帯状正極12を形成し、その後、一方の分極性電極eにPTFEよりなる厚さ75μmの第1のセパレータ13を重ね合せて、正極積層帯9を構成した。 The doctor blade method and the electrode mixture, width 105 mm, length 1500 mm, both surfaces in the width 95mm of the strip current collector 11 having a thickness of 40 [mu] m, length 1500 mm, each applied to a thickness of 220 .mu.m, then under rolling, thickness is to form a positive electrode strip 12 made of two sheets of belt-shaped polarizable electrode e of 175 .mu.m, then superposed first separator 13 having a thickness of 75μm made of PTFE on one polarizable electrode e, the positive electrode laminated band 9 you configure.
【0022】 [0022]
次に、前記電極混合物をドクタブレード法により、幅105mm、長さ1500mm、厚さ40μmの帯状集電体14の両面に幅95mm、長さ1500mm、厚さ220μmにそれぞれ塗布し、次いで圧延を行って、厚さ175μmの2枚の帯状分極性電極eよりなる帯状負極15を形成し、その後、一方の分極性電極eにPTFEよりなる厚さ75μmの第2のセパレータ16を重ね合せて、負極積層帯10を構成した。 Next, the doctor blade method the electrode mixture, carried out width 105 mm, length 1500 mm, thickness 40μm of the double-sided in the width 95mm of the strip current collector 14, length 1500 mm, respectively coated to a thickness 220 .mu.m, then rolling Te, to form a strip-shaped negative electrode 15 made of two sheets of belt-shaped polarizable electrodes e thickness 175 .mu.m, then superposed second separator 16 having a thickness of 75μm made of PTFE on one polarizable electrode e, negative and forming the laminated band 10.
【0023】 [0023]
そして、負極積層帯10の、露出している帯状分極性電極eに正極積層帯9の第1のセパレータ13を重ね合せ、その重ね合せ物を、負極積層帯10の第2のセパレータ16が最外側に位置するように渦巻き状に巻回して電極巻回体3を製造した。 Then, the negative electrode stacking zone 10, overlapping the first separator 13 of the positive electrode laminated band 9 to band polarizable electrodes e exposed, the superposition thereof, a second separator 16 of the negative electrode stacking zone 10 is most was prepared electrode winding body 3 is wound spirally so as to be positioned outside.
【0024】 [0024]
一方、容器2における内径50mm、長さ130mmの有底筒型本体4内周面に、前記電極混合物をドクタブレード法により塗布して長さ95mm、厚さ175μmの円筒型電極18を形成した。 On the other hand, the inner diameter 50mm in the container 2, the bottomed tubular body 4 inner peripheral surface of the length 130 mm, length 95mm the electrode mixture was applied by doctor blade method to form a cylindrical electrode 18 having a thickness of 175 .mu.m.
【0025】 [0025]
そして、電極巻回体3と、1.5モルのTEMA・BF 4をPC溶液に溶解した電解液とを有底筒型本体4内に入れ、その開口部を端子板5を用いて閉鎖した。 Then, an electrode winding body 3, the 1.5 moles of TEMA · BF 4 and an electrolyte dissolved in PC solution was placed in a bottomed tubular body 4, closed with terminal plate 5 and its opening . その閉鎖の際に、正極積層帯9および負極積層帯10の両集電体11,14は端子板5の正端子6および負端子7にそれぞれ接続され、また円筒型電極18は正端子6に接続される。 During its closure, both collector 11 and 14 of the positive electrode laminated band 9 and a negative electrode laminated band 10 is connected to the positive terminal 6 and a negative terminal 7 of the terminal plate 5, also cylindrical electrode 18 to the positive terminal 6 It is connected. この円筒型電気二重層コンデンサ1を実施例(2)とする。 The cylindrical electric double-layer capacitor 1 of Example (2).
〔例−III 〕 EXAMPLE -III]
比較例(1)として、有底筒型本体4の内周面に円筒型電極18を持たないものを用いた、ということ以外は実施例(1)と同様の構造を有する円筒型電気二重層コンデンサ1を製造した。 Comparative Example (1), the cylindrical electric double layer having the same structure as was used without a cylindrical electrode 18 on the inner peripheral surface of the bottomed tubular body 4, except that the embodiment (1) to produce a capacitor 1.
〔例−IV〕 EXAMPLE -IV]
比較例(2)として、有底筒型本体4の内周面に円筒型電極18を持たないものを用いた、ということ以外は実施例(2)と同様の構造を有する円筒型電気二重層コンデンサ1を製造した。 Comparative Example (2), the cylindrical electric double layer having the same structure as was used without a cylindrical electrode 18 on the inner peripheral surface of the bottomed tubular body 4, except that the embodiment (2) to produce a capacitor 1.
〔電気二重層コンデンサの性能〕 [Performance of the electric double layer capacitor]
表1は実施例(1)、(2)および比較例(1)、(2)の初期性能を示す。 Table 1 Example (1), (2) and Comparative Example (1) shows the initial performance of (2).
【0026】 [0026]
【表1】 [Table 1]
【0027】 [0027]
表1より、内部抵抗は実施例(1)、(2)および比較例(1)、(2)について略同じであるが、静電容量については実施例(1)は比較例(1)よりも、また実施例(2)は比較例(2)よりもそれぞれ約5%向上していることが判る。 From Table 1, the internal resistance in Example (1) and (2) and Comparative Example (1), (2) is substantially the same for, example, of the static capacitance (1) Comparative Example (1) are also example (2) it can be seen that improved by about 5%, respectively than that of the comparative example (2). これは、円筒型電極18の存在により電極巻回体3の帯状正、負極12,15の両面全体が静電容量確保のために有効に利用されたことに起因する。 This strip positive electrode winding body 3 due to the presence of the cylindrical electrode 18, the entire both surfaces of the negative electrode 12 and 15 is due to being effectively utilized for the capacitance obtained.
【0028】 [0028]
次に、実施例(1)、(2)および比較例(1)、(2)について、実用寿命を考慮して、45℃雰囲気中にて2.5V、1700時間の連続電圧印加を行って、それらの静電容量劣化率および内部抵抗上昇率を測定したところ、図6、7の結果を得た。 Next, Example (1), (2) and Comparative Example (1) and (2), taking into account the service life, 2.5V C. in 45 ° C. atmosphere, performing a continuous voltage application 1700 hours , it was those of the electrostatic capacity degradation rate and measuring the internal resistance increase rate, and the results of FIGS. 図6、7より、実施例(1)は比較例(1)に比べ、また実施例(2)は比較例(2)に比べて静電容量劣化率および内部抵抗上昇率が共に低く、高い実用寿命を有することが判る。 From FIG. 6, Example (1) is compared with Comparative Example (1), also Example (2) Comparative Example (2) the electrostatic capacity degradation rate and the internal resistance rise rate are both lower than the higher it is seen to have a service life. これは、円筒型電極18の存在によって、帯状正、負極12,15の電極利用量の同一化を図ったことに起因する。 This is due to the presence of the cylindrical electrode 18, strip-shaped positive, due to which attained the same of the electrode usage of the negative electrode 12 and 15.
【0029】 [0029]
なお、静電容量劣化率および内部抵抗上昇率が長時間に亘って変化している原因はガス発生等にある。 Incidentally, the cause of the electrostatic capacity degradation rate and the internal resistance increase rate is changed over a long period of time is in the gas generator or the like.
【0030】 [0030]
【発明の効果】 【Effect of the invention】
本発明によれば、帯状正極と帯状負極とを第1のセパレータを挟んで重ね合せ、また帯状正、負極の一方に第2のセパレータを重ね合せた重ね合せ物を、前記第2のセパレータが最外側に位置するように渦巻状に巻回した電極巻回体と、その電極巻回体を収容する容器を備えた筒型電気二重層コンデンサであって、前記帯状正極が、第1の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成され、前記帯状負極が、第2の帯状集電体の両面にそれぞれ接合した一対の帯状分極性電極より構成されるものにおいて、電極巻回体における帯状正、負極の一方の一部であって、最後の一周分の環状外周面が、それと極性を異にする容器の円筒型電極と第2のセパレータを挟んで対向して相手電極を持つことができ、しかもメソフェ According to the present invention, a positive electrode strip and a strip-shaped negative electrode across a first separator superposed, also a strip positive, overlapping product was superposed second separator on one of the negative electrode, the second separator a cylindrical electric double-layer capacitor having the electrode winding body wound in a spiral shape so as to be positioned on the outermost side, the container housing the electrode winding body, the strip positive electrode, the first strip consists of a pair of strip-shaped polarizable electrodes respectively joined to both surfaces of the collector, in what the strip negative electrode, which is composed of a pair of strip-shaped polarizable electrodes joined on both sides of the second band-like current collector, strip positive in the electrode winding body, a portion of one of the negative electrode, an annular outer peripheral surface of the last one round is therewith on opposite sides of the cylindrical electrode and the second separator vessel having different polarities It can have a partner electrode, moreover Mesofe ズピッチ由来のアルカリ賦活炭により形成される上記円筒型電極は膨潤して第2のセパレータに密着することができる。 The cylindrical electrode which is formed by alkali activation coal derived Zupitchi can be in close contact with the second separator swells. その結果、電極巻回体の帯状正、負極の両面全体を静電容量確保のために有効に利用してその静電容量を従来例よりも増加させることができ、また帯状正、負極の電極利用量の同一化により、電気二重層コンデンサの性能の劣化を極力抑制することが可能となって、優れた耐久性を有する筒型電気二重層コンデンサを提供することができる。 As a result, band-shaped positive electrode winding body, can be increased than the conventional example the capacitance utilized effectively for capacitance ensure total both sides of the negative electrode, also strip positive, the negative electrode the same of usage, degradation of performance of the electric double layer capacitor is possible to minimized, it is possible to provide a cylindrical electric double layer capacitor having excellent durability.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】 円筒型電気二重層コンデンサの要部破断斜視図である。 1 is a main part cutaway perspective view of a cylindrical electric double-layer capacitor.
【図2】 図1の2−2線断面図である。 2 is a cross-sectional view taken along line 2-2 of FIG.
【図3】 正極積層帯および負極積層帯よりなる重ね合せ物の要部側面図である。 3 is a partial side view of the positive electrode laminated band and overlapping product consisting of a negative electrode laminated band.
【図4】 容器の内周面に円筒型電極が存在しない場合の充電状態を示す説明図である。 4 is an explanatory view showing the state of charge of the absence of the cylindrical electrode to the inner peripheral surface of the container.
【図5】 容器の内周面に円筒型電極が存在する場合の充電状態を示す説明図である。 5 is an explanatory diagram showing a state of charge of the case where there is a cylindrical electrode on the inner peripheral surface of the container.
【図6】 経過時間と静電容量劣化率との関係を示すグラフである。 6 is a graph showing the relationship between the elapsed time and the capacitance deterioration rate.
【図7】 経過時間と内部抵抗上昇率との関係を示すグラフである。 7 is a graph showing the relationship between the elapsed time and the internal resistance increase rate.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 円筒型電気二重層コンデンサ2 容器3 電極巻回体 1 cylindrical electric double-layer capacitor 2 container 3 electrode winding body
11 第1の帯状集電体 11 The first of the belt-shaped collector
12 帯状正極13 第1のセパレータ 12 positive electrode strip 13 first separator
14 第2の帯状集電体 14 and the second belt-shaped collector
15 帯状負極16 第2のセパレータ18 円筒型電極A 重ね合せ物 15 strip-shaped negative electrode 16 and the second separator 18 the cylindrical electrode A superposition thereof
帯状分極性電極 e strip polarizable electrode

Claims (2)

  1. 帯状正極(12)と帯状負極(15)とを第1のセパレータ(13)を挟んで重ね合せ、また帯状正、負極(12,15)の一方に第2のセパレータ(16)を重ね合せた重ね合せ物(A)を、前記第2のセパレータ(16)が最外側に位置するように渦巻状に巻回した電極巻回体(3)と、その電極巻回体(3)を収容する容器(2) を備えた筒型電気二重層コンデンサであって、 Positive electrode strip (12) and the strip-shaped negative electrode (15) and the first overlay across the separator (13), also strip positive, superimposed one on the second separator of the negative electrode (12, 15) (16) superimposing was (a), said second separator (16) accommodates the electrode winding body wound in a spiral shape so as to be positioned on the outermost side (3), the electrode winding body (3) a cylindrical electric double-layer capacitor comprising a container (2),
    前記帯状正極(12)が、第1の帯状集電体(11)の両面にそれぞれ接合した一対の帯状分極性電極(e,e)より構成され、前記帯状負極(15)が、第2の帯状集電体(14)の両面にそれぞれ接合した一対の帯状分極性電極(e,e)より構成されるものにおいて、 The positive electrode strip (12) is a pair of strip-shaped polarizable electrode (e, e) joined on both sides of the first strip collector (11) is constructed from the strip-shaped negative electrode (15) of the second a pair of strip-like polarizable electrode (e, e) were respectively joined to both surfaces of the belt-shaped collector (14) in what is configured from,
    前記電極巻回体(3)の外周面と対向する前記容器(2)の内周面に、メソフェーズピッチ由来のアルカリ賦活炭により形成されて前記第2のセパレータ(16)に接触する円筒型電極(18)を設け、 The inner peripheral surface of the outer peripheral surface opposite to the container (2) of the electrode winding body (3), a cylindrical electrode in contact with the formed by alkali activation coal derived mesophase pitch second separator (16) (18) is provided,
    その円筒型電極(18)の極性を、前記帯状正、負極(12,15)の一方の一部であって、前記電極巻回体(3)の最外周に位置するものの極性と逆に設定したことを特徴とする筒型電気二重層コンデンサ。 The polarity of the cylindrical electrode (18), the strip positive, a one part of the negative electrode (12, 15), set opposite to the polarity of those located at the outermost periphery of the electrode winding body (3) cylindrical electric double-layer capacitor, characterized in that the.
  2. 円筒型電極(18)を膨潤させて前記第2のセパレータ(16)に密着させることを特徴とする、請求項1に記載の筒型電気二重層コンデンサ。 Cylindrical electrode (18) is swollen, characterized in that is brought into close contact with the second separator (16), cylindrical electric double layer capacitor according to claim 1.
JP22671899A 1999-08-10 1999-08-10 Cylindrical electric double layer capacitor Expired - Fee Related JP4326079B2 (en)

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US6462708B1 (en) 2001-04-05 2002-10-08 Sirf Technology, Inc. GPS-based positioning system for mobile GPS terminals
US6526322B1 (en) 1999-12-16 2003-02-25 Sirf Technology, Inc. Shared memory architecture in GPS signal processing
US6671620B1 (en) 2000-05-18 2003-12-30 Sirf Technology, Inc. Method and apparatus for determining global position using almanac information
US7719466B2 (en) 2000-08-24 2010-05-18 Sirf Technology Holdings, Inc. Communications systems that reduces auto-correlation or cross-correlation in weak signals
US7933627B2 (en) 2000-12-01 2011-04-26 Sirf Technology, Inc. GPS RF front end IC with frequency plan for improved integrability
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US6278403B1 (en) 1999-09-17 2001-08-21 Sirf Technology, Inc. Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver
US6480150B2 (en) 1999-09-17 2002-11-12 Sirf Technology, Inc. Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver
US6526322B1 (en) 1999-12-16 2003-02-25 Sirf Technology, Inc. Shared memory architecture in GPS signal processing
US6671620B1 (en) 2000-05-18 2003-12-30 Sirf Technology, Inc. Method and apparatus for determining global position using almanac information
US7719466B2 (en) 2000-08-24 2010-05-18 Sirf Technology Holdings, Inc. Communications systems that reduces auto-correlation or cross-correlation in weak signals
US7933627B2 (en) 2000-12-01 2011-04-26 Sirf Technology, Inc. GPS RF front end IC with frequency plan for improved integrability
US6462708B1 (en) 2001-04-05 2002-10-08 Sirf Technology, Inc. GPS-based positioning system for mobile GPS terminals
US8947300B2 (en) 2003-09-02 2015-02-03 Csr Technology Inc. Control and features for satellite positioning system receivers
US9869770B2 (en) 2003-09-02 2018-01-16 Qualcomm Incorporated Control and features for satellite positioning system receivers

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