JPS6390114A - Manufacture of polarizing electrode - Google Patents
Manufacture of polarizing electrodeInfo
- Publication number
- JPS6390114A JPS6390114A JP61234436A JP23443686A JPS6390114A JP S6390114 A JPS6390114 A JP S6390114A JP 61234436 A JP61234436 A JP 61234436A JP 23443686 A JP23443686 A JP 23443686A JP S6390114 A JPS6390114 A JP S6390114A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- polarizable electrode
- double layer
- electric double
- electrode
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 72
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- 238000001291 vacuum drying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 11
- 230000004913 activation Effects 0.000 description 11
- 229910052801 chlorine Inorganic materials 0.000 description 11
- 239000000460 chlorine Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Carbon And Carbon Compounds (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、分極性電極の製造方法、詳しくは電気二重層
コンデンサに用いられる活性炭を主成分とする分極性電
極の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a polarizable electrode, and more particularly to a method for manufacturing a polarizable electrode containing activated carbon as a main component and used in electric double layer capacitors.
（従来の技術）
電気二重層コンデンサは、分極性電極に電圧を印加した
際、電極表面と電解液との界面において形成される電気
二重層を利用して電荷を蓄積し、ＩＣメモリーの電源の
瞬断時におけるバックアンプ用電源などとして用いられ
ている。コンデンサの容量を大きくするためには、この
電気二重層の表面積を最大限に大きくすることが必要で
あり、そのため比表面積の極めて大きい活性炭が分極性
電極として利用されている。(Prior art) Electric double layer capacitors store electric charges by using the electric double layer formed at the interface between the electrode surface and electrolyte when a voltage is applied to a polarizable electrode, and serve as a power source for IC memory. It is used as a power source for backup amplifiers during momentary power outages. In order to increase the capacitance of a capacitor, it is necessary to maximize the surface area of this electric double layer, and for this reason activated carbon, which has an extremely large specific surface area, is used as a polarizable electrode.
このような分極性電極に用いられる活性炭としては、下
記のような特性を備えていることが望ましい。The activated carbon used in such polarizable electrodes preferably has the following properties.
■大容量を得るために単位重量当り、または単位体積当
りの表面積が大きいこと。■In order to obtain large capacity, the surface area per unit weight or unit volume must be large.
■大容量を得るためにイオンを効率よく吸収する必要が
あり、細孔容積がある程度大きいこと。■In order to obtain large capacity, it is necessary to absorb ions efficiently, and the pore volume must be large to some extent.
■２．０〜３．０Ｖ程度の電圧を印加したときに電気化
学的な反応が起こらないように重金属、ハロゲンなどの
不純物の含有量が少ないこと。(2) The content of impurities such as heavy metals and halogens should be small so that electrochemical reactions do not occur when a voltage of about 2.0 to 3.0 V is applied.
このような活性炭を製造する方法は、−ｍに原料の賦活
工程、湿式粉砕工程および乾燥工程からなるものである
。原料炭素を賦活する方法としては通常、薬品賦活法と
ガス賦活法のいずれかが適用されることが多い。The method for producing such activated carbon consists of -m, a raw material activation step, a wet pulverization step, and a drying step. Usually, either a chemical activation method or a gas activation method is applied as a method for activating raw carbon.
（発明が解決しようとする問題点）
しかしながら、薬品賦活法では脱水剤として主に塩化亜
鉛が使用されており、純度の高い活性炭を得るために塩
酸を添加して可溶性の塩類を溶解、除去するとともに塩
化亜鉛を回収し、水洗によって塩酸と塩化物とを除去す
るようになっている。(Problem to be solved by the invention) However, in the chemical activation method, zinc chloride is mainly used as a dehydrating agent, and in order to obtain highly pure activated carbon, hydrochloric acid is added to dissolve and remove soluble salts. At the same time, zinc chloride is recovered, and hydrochloric acid and chloride are removed by washing with water.
このため、薬品賦活法による市販の活性炭には未回収の
亜鉛イオンや塩素イオンが数十〜数百ｐｐｍのオーダー
で含まれていることが多い。For this reason, commercially available activated carbon produced by the chemical activation method often contains unrecovered zinc ions and chloride ions on the order of tens to hundreds of ppm.
また、ガス賦活法による活性炭も、本来含有している不
純物の他に、粉砕時に鉄粉などが混入することにより、
やはり全体として数十〜数百ｐｐｍのオーダーの重金属
を含んでいるのが普通である。In addition to the impurities originally contained in activated carbon produced using the gas activation method, iron powder and other substances are mixed in during the grinding process.
Generally, the total amount of heavy metals is on the order of several tens to hundreds of ppm.
活性炭に含有されているこのような不純物は、ユニット
セル内の電気化学的反応に関与して、セルの寿命を短か
くする結果になるという問題があった。There is a problem in that such impurities contained in activated carbon participate in electrochemical reactions within the unit cell, resulting in a shortened cell life.
本発明は、活性炭中に含有されている不純物、特にハロ
ゲン、天分および揮発分を効果的に除去して、不純物含
有量の少ない分極性電極を得ることを目的とする。An object of the present invention is to effectively remove impurities contained in activated carbon, particularly halogens, natural substances, and volatile substances to obtain a polarizable electrode with a low impurity content.
（問題点を解決するための手段）
前記の問題点を解決するため本発明は、活性炭を必要に
応じ好ましくは塩酸に浸漬し、次いで水洗した後、２０
０〜４００℃において真空乾燥する工程を含むことを特
徴とする分極性電極の製造方法を提供するものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention preferably immerses activated carbon in hydrochloric acid as necessary, then washes it with water, and then
The present invention provides a method for producing a polarizable electrode, which includes a step of vacuum drying at 0 to 400°C.
本発明で用いる原料活性炭は、特に限定されるものでは
なく、フェノール系、レーヨン系、アクリル系などの原
料繊維を直接に炭化して炭素繊維として賦活するか、あ
るいは原料繊維をあらかじめクロス状、不織布状、フェ
ルト状などにして炭化と賦活を同時に行って得られる活
性炭を適宜用いることができる。賦活は薬品賦活法、ガ
ス賦活法など、通常の賦活法によって行われる。これら
の活性炭のなかで、クロス、不織布などの形態でそのま
ま容易に活性炭化でき、強度特性と柔軟性に優れている
点で、フェノール系炭素繊維を原料とした活性炭が、電
気二重層コンデンサの分極性電極用に特に好適に使用で
きる。The raw material activated carbon used in the present invention is not particularly limited, and raw material fibers such as phenol, rayon, and acrylic fibers may be directly carbonized and activated as carbon fibers, or raw material fibers may be made into cloth or non-woven fibers in advance. Activated carbon obtained by simultaneously carrying out carbonization and activation in the form of a felt or the like can be used as appropriate. Activation is performed by a normal activation method such as a chemical activation method or a gas activation method. Among these activated carbons, activated carbon made from phenolic carbon fiber is the most popular for electric double layer capacitors because it can be easily activated carbonized in the form of cloth, nonwoven fabric, etc., and has excellent strength and flexibility. It can be particularly suitably used for polar electrodes.
本発明の製造方法では、これらの活性炭を、好ましくは
湿式粉砕法によって好ましくは４０〜２００メツシユに
粉砕した後、好ましくは０．１〜１０ｍＨｇの圧力で２
００〜４００℃、好ましくは３００〜３５０℃において
、２〜４時間程度の真空乾燥を行う。In the production method of the present invention, these activated carbons are preferably pulverized into 40 to 200 meshes by a wet pulverization method, and then pulverized at a pressure of 0.1 to 10 mHg.
Vacuum drying is performed at 00 to 400°C, preferably 300 to 350°C, for about 2 to 4 hours.
前記工程に際してあらかじめ、好ましくは活性炭を０．
５〜２Ｎの塩酸水溶液に浸漬し、次いで水洗によって塩
酸を除去した後、前記の条件において真空乾燥処理を行
う。Preferably, activated carbon is added to 0.0% in advance during the step.
After immersing in a 5 to 2N aqueous hydrochloric acid solution and then washing with water to remove the hydrochloric acid, a vacuum drying treatment is performed under the above conditions.
このようにして得られた粉末状活性炭をたとえば含フツ
素樹脂重合体などをバインダーとし、これに液状潤滑剤
を添加して混練し、シート状に成型し、好ましくは一軸
または二輪方向に延伸したものを分極性電極の材料とし
て使用することができる。The powdered activated carbon thus obtained is mixed with, for example, a fluorine-containing resin polymer as a binder, a liquid lubricant is added thereto, and the mixture is kneaded, formed into a sheet, and preferably stretched in a uniaxial or biaxial direction. can be used as a material for polarizable electrodes.
（実施例） 以下、実施例および比較例を図面を参照して説明する。(Example) Examples and comparative examples will be described below with reference to the drawings.
実施例１
フェノール系活性炭（塩素含有Ｐｉ １３０ ｐｐｍ）
を２００メツシユに粉砕したものをステンレス製容器中
で、温度３５０℃、圧力１ｍｍＨＨの条件で２時間真空
乾燥した。この処理後に塩素および灰分の分析を行いそ
の結果を第１表に示した。このようにして高温真空乾燥
処理した活性炭８０重量部にカーボンブランク１０重量
部、ポリテトラフルオロエチレン粉末１０重量部を混合
し、この混合物１００重量部にエタノール２０重量部を
添加して乳鉢中で混練しペースト状にして、このペース
トをロール成型機を用いてシート状電極材料に成型した
。この材料を使用して第１図に示すようなコイン型の電
気二重層コンデンサのユニットセルを下記の手順で製作
した。Example 1 Phenolic activated carbon (chlorine-containing Pi 130 ppm)
was ground into 200 meshes and vacuum-dried for 2 hours at a temperature of 350° C. and a pressure of 1 mmHH in a stainless steel container. After this treatment, chlorine and ash content were analyzed and the results are shown in Table 1. 80 parts by weight of activated carbon that has been subjected to high-temperature vacuum drying in this way is mixed with 10 parts by weight of carbon blank and 10 parts by weight of polytetrafluoroethylene powder, 20 parts by weight of ethanol is added to 100 parts by weight of this mixture, and the mixture is kneaded in a mortar. This was made into a paste, and this paste was molded into a sheet-like electrode material using a roll molding machine. Using this material, a unit cell of a coin-shaped electric double layer capacitor as shown in FIG. 1 was manufactured according to the following procedure.
前記シート状電極材料を円板状に打ち抜いて分極性電極
１ （直径１５顛、厚さ０．６１ｍ）とし、分極性電極
１と、これと同一の組成、形状を有する分極性電極２と
をポリプロピレン繊維不織布よりなるセパレータ３を介
してステンレス鋼製のキャップ４およびステンレス鋼製
の缶５からなる外装容５中に収納した。The sheet-like electrode material was punched out into a disk shape to form a polarizable electrode 1 (diameter 15 mm, thickness 0.61 m), and the polarizable electrode 1 and a polarizable electrode 2 having the same composition and shape as this were separated. It was housed in an exterior container 5 consisting of a stainless steel cap 4 and a stainless steel can 5 via a separator 3 made of a nonwoven polypropylene fiber fabric.
次にこのユニットセル中に電解液として４フツ化ホウ酸
テトラブチルホスホニウムのプロピレンカーボネート溶
液（濃度：ＩＭ／ｊりを注入して分極性電極１．２およ
びセパレータ３中に電解液を充分に含浸させた後、ポリ
プロピレン製バンキング６を介してキャップ４および缶
５の端部をかしめて封口した。Next, a propylene carbonate solution of tetrabutylphosphonium tetrafluoroborate (concentration: IM/J) is injected into the unit cell as an electrolyte to sufficiently impregnate the polarizable electrode 1.2 and separator 3 with the electrolyte. After this, the ends of the cap 4 and the can 5 were caulked and sealed via the polypropylene banking 6.
上記のように製作した電気二重層コンデンサユニットセ
ルを２．８ｖで３０分間定電圧充電を行い、その後１ｍ
Ａ定電流放電し、放電時の端子間電圧が１ｖに至るまで
の時間を測定し単極単位体積当り初期容量を算出した。The electric double layer capacitor unit cell manufactured as above was charged at a constant voltage of 2.8V for 30 minutes, and then 1m
A constant current discharge was performed, and the time until the voltage between the terminals reached 1 V during discharge was measured, and the initial capacity per unit volume of the single electrode was calculated.
次に同セルを１０００時間２゜８ｖ連続印加した後の容
量を同様にして測定し、初期値と比較して容量劣化率を
算出してその結果を第１表に示した。Next, the capacity of the same cell was measured in the same manner after 2°8V was continuously applied for 1000 hours, and the capacity deterioration rate was calculated by comparing it with the initial value.The results are shown in Table 1.
実施例２
実施例１と同じ活性炭（塩素含有量１３０ ｐｐｍ）を
２００メツシユまで粉砕して、ステンレス容器に入れ温
度３００℃、圧力１ｔｌＨｇの条件で２時間真空乾燥し
た。この処理後に活性炭の塩素および灰分の分析を行い
その結果を第１表に示した。Example 2 The same activated carbon (chlorine content: 130 ppm) as in Example 1 was crushed to 200 meshes, placed in a stainless steel container, and vacuum-dried for 2 hours at a temperature of 300° C. and a pressure of 1 tlHg. After this treatment, the activated carbon was analyzed for chlorine and ash content, and the results are shown in Table 1.
この真空乾燥処理した活性炭を用いて実施例１と同様に
して、電気二重層コンデンサのユニットセルを製作し、
評価を行って結果を第１表に示した。Using this vacuum-dried activated carbon, a unit cell of an electric double layer capacitor was manufactured in the same manner as in Example 1,
The evaluation was carried out and the results are shown in Table 1.
実施例３
実施例１と同じ活性炭を４０メツシユに粉砕しＩＮの塩
酸に１昼夜浸漬して、ときどき攪拌した。Example 3 The same activated carbon as in Example 1 was ground into 40 meshes and immersed in IN hydrochloric acid for one day and night, with occasional stirring.
次に流水中で３時間水洗した後、ステンレス容器中で温
度３００℃、圧力ｌ 鶴１（ｇの条件で２時間真空乾燥
した。この処理後に活性炭の塩素および灰分を分析し、
この活性炭を用いて実施例１と同様にして、コンデンサ
のユニットセルを製作し、評価を行って結果を第１表に
示した。Next, after washing in running water for 3 hours, vacuum drying was carried out in a stainless steel container at a temperature of 300°C and a pressure of 1 kg for 2 hours. After this treatment, the activated carbon was analyzed for chlorine and ash.
A capacitor unit cell was manufactured using this activated carbon in the same manner as in Example 1, and evaluated. The results are shown in Table 1.
実施例４
実施例３において、塩酸処理および水洗後、温度３５０
℃、圧力１ ＋ｎ Ｈｇの条件で２時間の真空乾燥処理
を行った。この処理後に活性炭の塩素と灰分を分析し、
この活性炭を用いて実施例１と同様にしてコンデンサの
ユニットセルを製作し、評価を行って結果を第１表に示
した。Example 4 In Example 3, after hydrochloric acid treatment and water washing, the temperature was 350
A vacuum drying process was performed for 2 hours at a temperature of 1°C and a pressure of 1 + n Hg. After this treatment, the activated carbon was analyzed for chlorine and ash.
A capacitor unit cell was manufactured using this activated carbon in the same manner as in Example 1, and evaluated. The results are shown in Table 1.
比較例１
実施例１と同じ活性炭（塩素含有量１３０ ｐｐｅｉ
）を２００メツシユに粉砕し、高温真空乾燥処理を行わ
ないで実施例１と同様にしてユニットセルを製作し、評
価を行って結果を第１表に示した。Comparative Example 1 The same activated carbon as in Example 1 (chlorine content 130 ppi
) was pulverized into 200 meshes, a unit cell was produced in the same manner as in Example 1 without performing high-temperature vacuum drying treatment, and evaluation was performed. The results are shown in Table 1.
比較例２
実施例１と同じ活性炭（塩素含有量１３０ ｐｐｍ ）
を２００メツシユに粉砕しＩＮ塩酸に一昼夜浸漬してと
きどき攪拌した後、３時間水洗した。この活性炭を乾燥
５中で窒素ガスを吹込んで１００℃で３時間乾燥した。Comparative Example 2 Same activated carbon as Example 1 (chlorine content 130 ppm)
The powder was ground into 200 meshes, immersed in IN hydrochloric acid overnight, stirred occasionally, and then washed with water for 3 hours. This activated carbon was dried in Drying 5 at 100° C. for 3 hours by blowing nitrogen gas.
得られた活性炭の塩素および灰分を分析し、この活性炭
を用いて実施例１と同様にしてユニットセルを製作し、
評価を行って結果を第１表に示した。The chlorine and ash content of the obtained activated carbon was analyzed, and a unit cell was manufactured using this activated carbon in the same manner as in Example 1.
The evaluation was carried out and the results are shown in Table 1.
（本頁、以下余白）
第１表
（作用および効果）
本発明の製造方法によって従来の方法よりも不純物の少
ない分極性電極が得られる理由は下記のように考えられ
る。(This page, below in the margins) Table 1 (Functions and Effects) The reason why a polarizable electrode with less impurities can be obtained by the manufacturing method of the present invention than by the conventional method is considered to be as follows.
高温真空加熱処理することにより活性炭中の塩素分が次
のような機構で効果的に除去される。By performing high-temperature vacuum heat treatment, the chlorine content in activated carbon is effectively removed by the following mechanism.
Ｈ２０＋Ｃ→Ｈｘ ＋ｃ。H20+C→Hx +c.
Ｒ−Ｃ１＋Ｈ２→Ｒ−Ｈ＋ＨＣ１
（Ｒは活性炭を示す）
また、真空加熱処理の前にＩＮの塩酸中に浸漬すること
により、電気化学的反応に寄与する可能性のある金属塩
が塩化物となり水洗によって容易に除去されるものと思
われる。これを真空加熱処理して塩素骨を除去すること
により、第１表の実施例３．４に示すように加熱処理だ
けの場合（実施例１．２）よりもさらに不純物の少ない
活性炭が得られる０重′Ｗｋ減少率も揮発分と塩類の除
去率を反映している。R-C1+H2→R-H+HC1 (R indicates activated carbon) In addition, by immersing IN hydrochloric acid before vacuum heat treatment, metal salts that may contribute to electrochemical reactions become chlorides and are washed with water. It seems that it can be easily removed by By applying vacuum heat treatment to remove chlorine bones, activated carbon with even fewer impurities can be obtained than in the case of only heat treatment (Example 1.2), as shown in Example 3.4 in Table 1. The 0w'Wk reduction rate also reflects the removal rate of volatile matter and salts.
本発明の分極性電極を用いた電気二重層コンデンサは２
．８ｖの電圧を印加して１０００時間経過後も容量の劣
化率が小さい。The electric double layer capacitor using the polarizable electrode of the present invention has two
．． Even after 1000 hours have passed after applying a voltage of 8 V, the rate of deterioration of capacity is small.
（発明の効果）
本発明の製造方法によれば、不純物含有量の少ない分極
性電極が得られ、この電極を用いた電気二重層コンデン
サは長期間負荷条件下で容量劣化率が小さく、安定した
性能を維持することができる。(Effects of the Invention) According to the manufacturing method of the present invention, a polarizable electrode with low impurity content can be obtained, and an electric double layer capacitor using this electrode has a low capacity deterioration rate under long-term load conditions and is stable. performance can be maintained.
第１図は本発明による分極性電極を用いた電気二重層コ
ンデンサの一実施態様を示す図である。
１．２・・・・・・分極性電極、
３・・・・・・セパレータ、
４・・・・・・キャップ、
５・・・・・・缶、
６・・・・・・バッキング。FIG. 1 is a diagram showing an embodiment of an electric double layer capacitor using polarizable electrodes according to the present invention. 1.2...Polarizable electrode, 3...Separator, 4...Cap, 5...Can, 6...Backing.
Claims (2)
する工程を含むことを特徴とする分極性電極の製造方法
。(1) A method for producing a polarizable electrode, comprising a step of vacuum drying activated carbon at 200 to 400°C.
したものであることを特徴とする特許請求の範囲第１項
記載の分極性電極の製造方法。(2) The method for producing a polarizable electrode according to claim 1, wherein the activated carbon is soaked in hydrochloric acid in advance and then washed with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61234436A JPS6390114A (en) | 1986-10-03 | 1986-10-03 | Manufacture of polarizing electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61234436A JPS6390114A (en) | 1986-10-03 | 1986-10-03 | Manufacture of polarizing electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6390114A true JPS6390114A (en) | 1988-04-21 |
| JPH0353767B2 JPH0353767B2 (en) | 1991-08-16 |
Family
ID=16970977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61234436A Granted JPS6390114A (en) | 1986-10-03 | 1986-10-03 | Manufacture of polarizing electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6390114A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996034402A1 (en) * | 1995-04-27 | 1996-10-31 | Nippon Sanson Corporation | Process for producing carbonaceous material for electric double-layer capacitor, and carbon electrode and electric double-layer capacitor |
| JP2007169117A (en) * | 2005-12-22 | 2007-07-05 | Nippon Oil Corp | Activated carbon and electrical double layer capacitor using same |
| JP2013530494A (en) * | 2010-05-12 | 2013-07-25 | アリゾナ ボード オブ リージェンツ アクティング フォー アンド オン ビハーフ オブ アリゾナ ステイト ユニバーシティ | Metal-air battery with performance-enhancing additives |
| JP5908148B1 (en) * | 2015-06-24 | 2016-04-26 | 株式会社キャタラー | Method for analyzing chlorine content of carbon material and method for producing carbon material from which chlorine has been removed |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166373A (en) * | 1984-09-07 | 1986-04-05 | Matsushita Electric Ind Co Ltd | Manufacture of polarized electrode |
-
1986
- 1986-10-03 JP JP61234436A patent/JPS6390114A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166373A (en) * | 1984-09-07 | 1986-04-05 | Matsushita Electric Ind Co Ltd | Manufacture of polarized electrode |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996034402A1 (en) * | 1995-04-27 | 1996-10-31 | Nippon Sanson Corporation | Process for producing carbonaceous material for electric double-layer capacitor, and carbon electrode and electric double-layer capacitor |
| JP2007169117A (en) * | 2005-12-22 | 2007-07-05 | Nippon Oil Corp | Activated carbon and electrical double layer capacitor using same |
| US9184478B2 (en) | 2010-05-10 | 2015-11-10 | Arizona Board Of Regents For And On Behalf Of Arizona State University | Metal-air cell with performance enhancing additive |
| US10374236B2 (en) | 2010-05-10 | 2019-08-06 | Arizona Board Of Regents Acting For And On Behalf Of Arizona State University | Metal-air cell with performance enhancing additive |
| US11196057B2 (en) | 2010-05-10 | 2021-12-07 | Arizona Board Of Regents For And On Behalf Of Arizona State University | Metal-air cell with performance enhancing additive |
| JP2013530494A (en) * | 2010-05-12 | 2013-07-25 | アリゾナ ボード オブ リージェンツ アクティング フォー アンド オン ビハーフ オブ アリゾナ ステイト ユニバーシティ | Metal-air battery with performance-enhancing additives |
| JP2017027948A (en) * | 2010-05-12 | 2017-02-02 | アリゾナ ボード オブ リージェンツ アクティング フォー アンド オン ビハーフ オブ アリゾナ ステイト ユニバーシティＡｒｉｚｏｎａ Ｂｏａｒｄ Ｏｆ Ｒｅｇｅｎｔｓ Ａｃｔｉｎｇ Ｆｏｒ Ａｎｄ Ｏｎ Ｂｅｈａｌｆ Ｏｆ Ａｒｉｚｏｎａ Ｓｔａｔｅ Ｕｎｉｖｅｒｓｉｔｙ | Metal-air cell with performance enhancing additive |
| JP5908148B1 (en) * | 2015-06-24 | 2016-04-26 | 株式会社キャタラー | Method for analyzing chlorine content of carbon material and method for producing carbon material from which chlorine has been removed |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0353767B2 (en) | 1991-08-16 |
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