JPH026207B2 - - Google Patents
Info
- Publication number
- JPH026207B2 JPH026207B2 JP59017374A JP1737484A JPH026207B2 JP H026207 B2 JPH026207 B2 JP H026207B2 JP 59017374 A JP59017374 A JP 59017374A JP 1737484 A JP1737484 A JP 1737484A JP H026207 B2 JPH026207 B2 JP H026207B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- stainless steel
- electric double
- double layer
- layer capacitor
- 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 - Lifetime
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 47
- 229910001220 stainless steel Inorganic materials 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 22
- 239000003990 capacitor Substances 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 3
- 239000012466 permeate Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
- Electric Double-Layer Capacitors Or The Like (AREA)
Description
本発明は、活性炭を主体とする分極性電極と電
解液界面とで形成される電気二重層キヤパシタを
利用した電気二重層キヤパシタに関するものであ
る。
従来、活性炭を用いた分極性電極の集電体とし
てはニツケル、白金、ステンレスなどの耐腐食性
金属の板体あるいはエキスパンドメタルなどが主
なものであつた。しかし、集電体として板体ある
いはエキスパンドメタルを用いた場合、活性炭を
バインダーを用いて集電体に担持させるため、導
電性や活性炭の保持性が悪く、製品（電気二重層
キヤパシタ）化した場合にその内部インピーダン
スが大きく、また活性炭の脱落による容量減少な
どが起こる要因となつていた。
しかるに、本発明は集電体としてステンレレス
鋼繊維を用いた電気二重層キヤパシタを提供する
ものであり、これにより活性炭を用いた分極性電
極の導電性の向上および活性炭の脱落による容量
減少の改善を期待できるものである。
先ず、本発明に係る電気二重層キヤパシタの分
極性電極およびその製造方法について説明する。
例えば、270〜325メツシユ（50μm）の活性炭を
用い、これを50μm径のステンレス鋼繊維のフエ
ルト状のものに担持させる。この50μm径のステ
ンレス鋼繊維は加圧・真空焼結した場合、50μm
以上の粒子の活性炭は透過せず、それ以下の粒子
のものは透過することができる。この関係は他の
径のステンレス鋼繊維についても言えることであ
り、仮りに80μm径のステンレス鋼繊維を用いれ
ば80μm径の粒子を基準に透過するか決定できる。
通常、使用することができる活性炭は200メツシ
ユ（80μm）が限度であり、よつて使用可能なス
テンレス鋼繊維の径も80μm程度が限度となる。
上述の270〜325メツシユ（50μm）の活性炭を
50μm径のステンレス鋼繊維のフエルト状のもの
に担持させたものに対し、その上下に担持した活
性炭を透過しない10μm程度のステンレス鋼繊維
のフエルト状のものを配置する。次いで、これを
加圧・真空焼結処理する。加圧・真空焼結の条件
は活性炭の粒径、種類、ステンレス鋼繊維の径な
どによつて決定される。また、活性炭を含んだ中
央のステンレス鋼繊維の上下に配した活性炭不透
過のステンレス鋼繊維の厚みは、活性炭を透過し
ないような強度が得られる最小の厚みが好まし
い。
次に、このようにして得た分極性電極を利用し
た本発明に係る電気二重層キヤパシタの実施例を
図面と共に説明する。325メツシユパス（44μm以
下）の活性炭30mgを40μm径のステンレス鋼繊維
（SUS316L；18％Cr・12％Ni・25％Mo、極低炭
素型鋼）のフエルト１に付着させ、その下に3μm
径のステンレス鋼繊維２，２を配置し、加圧・真
空焼結して分極性電極３を得る。この分極性電極
３は活性炭を含んだ40μm径ステンレス鋼繊維１
が１mm厚、3μmの径のステンレス鋼繊維２，２部
分が上下で0.2mm厚、全体で1.2mm原である。この
ようにして得た一方の分極性電極３と他方の分極
性電極３との間に合成繊維によるイオン透過性セ
パレータ４を介在させ、これに高電導度の有機電
解液を含浸せることによりキヤパシタ素子５単体
を得る。この素子５を素子間は電解液を透過しな
いような導電体６、例えばステンレス板を配し、
耐電圧を高くするために何層か積層し、最後に外
気との遮断のために封口体７にて封口し、高耐電
圧の電気二重層キヤパシタ８を得た。図中、９は
リードである。このキヤパシタ８の直流電流の充
電時間より求めた容量はφ8×12mmの外形寸法に
おいて100000μFであつた。
第１表に、本発明実施例と従来例の諸特性比較
を示すが、その比較に先立つて従来の電気二重層
キヤパシタを簡単に説明する。325メツシユパス
の活性炭30mgと導電剤としてのカーボンブラツク
10mgとを有機バインダーを用いステンレスエキス
パンドメチルネツトに担持させて分極性電極を得
る。上記実施例と同様に２個の分極性電極間にセ
パレータを介在し、電解液を含浸させ、キヤパシ
タ素子を得る。この素子を導電体を介在させて何
層か積層し、封口体にて封口し、容量が
100000μFの電気二重層キヤパシタを得た。
The present invention relates to an electric double layer capacitor that utilizes an electric double layer capacitor formed by a polarizable electrode mainly made of activated carbon and an electrolyte interface. Conventionally, the main current collectors for polarizable electrodes using activated carbon have been plates or expanded metals made of corrosion-resistant metals such as nickel, platinum, and stainless steel. However, when a plate or expanded metal is used as a current collector, the activated carbon is supported on the current collector using a binder, so the conductivity and activated carbon retention are poor, and when it is turned into a product (electric double layer capacitor). Moreover, its internal impedance is large, and this is another factor that causes the capacity to decrease due to the activated carbon falling off. However, the present invention provides an electric double layer capacitor using stainless steel fibers as a current collector, thereby improving the conductivity of polarizable electrodes using activated carbon and improving the capacity reduction due to shedding of activated carbon. This is something to look forward to. First, a polarizable electrode of an electric double layer capacitor according to the present invention and a method of manufacturing the same will be explained.
For example, activated carbon of 270 to 325 meshes (50 μm) is used and supported on a felt-like piece of stainless steel fiber with a diameter of 50 μm. This 50μm diameter stainless steel fiber becomes 50μm when pressure/vacuum sintered.
Activated carbon with particles larger than this does not pass through, while particles with smaller particles can pass through. This relationship also applies to stainless steel fibers of other diameters, and if stainless steel fibers of 80 μm diameter are used, it is possible to determine whether or not they will pass through particles with a diameter of 80 μm.
Normally, the activated carbon that can be used has a limit of 200 meshes (80 μm), and the diameter of stainless steel fibers that can be used is also limited to about 80 μm.
Activated carbon of 270 to 325 mesh (50μm) as mentioned above
A felt material made of stainless steel fibers with a diameter of 50 μm is supported, and felt materials made of stainless steel fibers with a diameter of about 10 μm, which do not permeate the supported activated carbon, are placed above and below the felt material. Next, this is subjected to pressure/vacuum sintering treatment. Pressure/vacuum sintering conditions are determined by the particle size and type of activated carbon, the diameter of stainless steel fibers, etc. Further, the thickness of the activated carbon-impermeable stainless steel fibers disposed above and below the central stainless steel fiber containing activated carbon is preferably the minimum thickness that provides a strength that prevents activated carbon from permeating. Next, an example of an electric double layer capacitor according to the present invention using the polarizable electrode thus obtained will be described with reference to the drawings. 30mg of activated carbon with 325 mesh pass (44μm or less) is attached to felt 1 of 40μm diameter stainless steel fiber (SUS316L; 18%Cr/12%Ni/25%Mo, ultra-low carbon type steel), and 3μm of activated carbon is attached below it.
Polarizable electrodes 3 are obtained by sintering the stainless steel fibers 2, 2 under pressure and vacuum. This polarizable electrode 3 is a 40 μm diameter stainless steel fiber 1 containing activated carbon.
The stainless steel fibers are 1mm thick, 3μm in diameter, and the two sections are 0.2mm thick at the top and bottom, making the whole 1.2mm. An ion-permeable separator 4 made of synthetic fiber is interposed between one polarizable electrode 3 and the other polarizable electrode 3 thus obtained, and a capacitor is formed by impregnating this with a highly conductive organic electrolyte. A single element 5 is obtained. A conductor 6, such as a stainless steel plate, that does not allow the electrolyte to pass through is arranged between the elements 5,
Several layers were laminated to increase the withstand voltage, and finally the capacitor was sealed with a sealing member 7 to isolate it from the outside air, thereby obtaining an electric double layer capacitor 8 with a high withstand voltage. In the figure, 9 is a lead. The capacitance of this capacitor 8, determined from the DC current charging time, was 100,000 μF in external dimensions of φ8×12 mm. Table 1 shows a comparison of various characteristics between the embodiment of the present invention and the conventional example. Prior to the comparison, the conventional electric double layer capacitor will be briefly explained. 30mg of activated carbon from 325 mesh pass and carbon black as a conductive agent
A polarizable electrode is obtained by supporting 10 mg of the compound on stainless steel expanded methyl net using an organic binder. As in the above embodiment, a separator is interposed between two polarizable electrodes and impregnated with an electrolytic solution to obtain a capacitor element. This element is laminated in several layers with a conductor interposed between them, and sealed with a sealant to increase the capacitance.
A 100000μF electric double layer capacitor was obtained.
【表】
第１表から判るように、本発明実施例によると
従来例に比し、内部抵抗および漏れ電流の低減を
はかることができ、かつ小型の電気二重層キヤパ
シタを提供できるものである。[Table] As can be seen from Table 1, the embodiments of the present invention can reduce internal resistance and leakage current as compared to the conventional example, and can provide a compact electric double layer capacitor.
第１図は本発明に係る分極性電極の概略を説明
するための断面図、第２図は本発明に係る電気二
重層キヤパシタの概略を説明するための断面図で
ある。
図中、１，２……ステンレス鋼繊維、３……分
極性電極、４……セパレータ、５……キヤパシタ
素子、６……導電板、７……封口体、８……電気
二重層キヤパシタ、９……リード。
FIG. 1 is a cross-sectional view for explaining the outline of a polarizable electrode according to the present invention, and FIG. 2 is a cross-sectional view for explaining the outline of the electric double layer capacitor according to the present invention. In the figure, 1, 2... stainless steel fiber, 3... polarizable electrode, 4... separator, 5... capacitor element, 6... conductive plate, 7... sealing body, 8... electric double layer capacitor, 9...Lead.
Claims (1)
解液界面とで形成される電気二重層を利用した電
気二重層キヤパシタにおいて、集電体としてステ
ンレス鋼の繊維を用いたことを特徴とする電気二
重層キヤパシタ。 ２ 特許請求の範囲１において、活性炭を透過し
ない第１のステンレス鋼の繊維層と、活性炭を含
んだ第２のステンレス鋼の繊維層と、活性炭を透
過しない第３の層とを加圧・真空焼結して得られ
たものを分極性電極として用いたことを特徴とす
る電気二重層キヤパシタ。[Claims] 1. In an electric double layer capacitor that utilizes an electric double layer formed by a polarizable electrode in which activated carbon is supported on a current collector and an electrolyte interface, stainless steel fibers are used as the current collector. An electric double layer capacitor characterized by: 2. In claim 1, the first stainless steel fiber layer that does not permeate activated carbon, the second stainless steel fiber layer that contains activated carbon, and the third layer that does not permeate activated carbon are subjected to pressure/vacuum. An electric double layer capacitor characterized in that a material obtained by sintering is used as a polarizable electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59017374A JPS60161610A (en) | 1984-02-01 | 1984-02-01 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59017374A JPS60161610A (en) | 1984-02-01 | 1984-02-01 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60161610A JPS60161610A (en) | 1985-08-23 |
| JPH026207B2 true JPH026207B2 (en) | 1990-02-08 |
Family
ID=11942237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59017374A Granted JPS60161610A (en) | 1984-02-01 | 1984-02-01 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60161610A (en) |
-
1984
- 1984-02-01 JP JP59017374A patent/JPS60161610A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60161610A (en) | 1985-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3652902A (en) | Electrochemical double layer capacitor | |
| JP4264198B2 (en) | Capacitor with double electrical layer | |
| CZ107397A3 (en) | Two-layer capacitor | |
| JPH0399415A (en) | Electric double layer capacitor | |
| JPH0658864B2 (en) | Electric double layer capacitor | |
| JPS60235419A (en) | Electric double layer capacitor | |
| JPH026207B2 (en) | ||
| JP2548222B2 (en) | Electric double layer capacitor | |
| JPS5948917A (en) | Electric double layer capacitor | |
| JPH026208B2 (en) | ||
| JPS63261817A (en) | electric double layer capacitor | |
| JP2900429B2 (en) | Electric double layer capacitor | |
| JP3132181B2 (en) | Electric double layer capacitor | |
| JP3309436B2 (en) | Electric double layer capacitor | |
| JPH0213454B2 (en) | ||
| JP3252437B2 (en) | Electric double layer capacitor | |
| JPS6164113A (en) | electric double layer capacitor | |
| JPH02240908A (en) | electric double layer capacitor | |
| JPS6175512A (en) | Electric double-layer capacitor | |
| JPH03116708A (en) | Electric double-layer capacitor | |
| JPS63268222A (en) | electric double layer capacitor | |
| JPS63261816A (en) | electric double layer capacitor | |
| JPS6184819A (en) | electric double layer capacitor | |
| JPH03116709A (en) | Electric double-layer capacitor | |
| JPH04152616A (en) | Electric double-layer capacitor |