JPH01274412A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH01274412A JPH01274412A JP63104641A JP10464188A JPH01274412A JP H01274412 A JPH01274412 A JP H01274412A JP 63104641 A JP63104641 A JP 63104641A JP 10464188 A JP10464188 A JP 10464188A JP H01274412 A JPH01274412 A JP H01274412A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- electrolyte
- electric double
- layer capacitor
- compounds
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 16
- -1 pyridinium compound Chemical class 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 229950002932 hexamethonium Drugs 0.000 claims abstract description 6
- 239000008151 electrolyte solution Substances 0.000 abstract description 5
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 abstract description 4
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 8
- UPCIBFUJJLCOQG-UHFFFAOYSA-L ethyl-[2-[2-[ethyl(dimethyl)azaniumyl]ethyl-methylamino]ethyl]-dimethylazanium;dibromide Chemical class [Br-].[Br-].CC[N+](C)(C)CCN(C)CC[N+](C)(C)CC UPCIBFUJJLCOQG-UHFFFAOYSA-L 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 6
- PYIHTIJNCRKDBV-UHFFFAOYSA-L trimethyl-[6-(trimethylazaniumyl)hexyl]azanium;dichloride Chemical class [Cl-].[Cl-].C[N+](C)(C)CCCCCC[N+](C)(C)C PYIHTIJNCRKDBV-UHFFFAOYSA-L 0.000 description 6
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical class C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical class C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Chemical class 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 239000003125 aqueous solvent Substances 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- OIDIRWZVUWCCCO-UHFFFAOYSA-N 1-ethylpyridin-1-ium Chemical class CC[N+]1=CC=CC=C1 OIDIRWZVUWCCCO-UHFFFAOYSA-N 0.000 description 1
- DIHWAMIYJUIJBM-UHFFFAOYSA-M 1-hexadecylpyridin-1-ium;thiocyanate Chemical class [S-]C#N.CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 DIHWAMIYJUIJBM-UHFFFAOYSA-M 0.000 description 1
- 241001454667 Perga Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- NEUSVAOJNUQRTM-UHFFFAOYSA-N cetylpyridinium Chemical compound CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 NEUSVAOJNUQRTM-UHFFFAOYSA-N 0.000 description 1
- 229960004830 cetylpyridinium Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- OCDDFQZMFBDQKD-UHFFFAOYSA-N hexadecyl thiocyanate Chemical compound CCCCCCCCCCCCCCCCSC#N OCDDFQZMFBDQKD-UHFFFAOYSA-N 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000012457 nonaqueous media Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- HSMKTIKKPMTUQH-WBPXWQEISA-L pentolinium tartrate Chemical compound OC(=O)[C@H](O)[C@@H](O)C([O-])=O.OC(=O)[C@H](O)[C@@H](O)C([O-])=O.C1CCC[N+]1(C)CCCCC[N+]1(C)CCCC1 HSMKTIKKPMTUQH-WBPXWQEISA-L 0.000 description 1
- 229950008637 pentolonium Drugs 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 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)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は電気二重層コンデンサに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an electric double layer capacitor.
（従来の技術）
従来、電気二重層コンデンサに用いられる電解質として
、酸性又はアルカリ性の水溶液、アルカリ金属又はアル
カリ土類金属の過ｇＡ″ＡＭ塩、ホウフッ化塩、フッ化
リン酸塩等の非水溶液が用いられている。(Prior Art) Conventionally, as electrolytes used in electric double layer capacitors, acidic or alkaline aqueous solutions, non-aqueous solutions such as pergA''AM salts of alkali metals or alkaline earth metals, borofluoride salts, fluorophosphates, etc. have been used as electrolytes. is used.
（発明が解決しようとする課題）
しかし、水溶液系の電解質を用いたものは耐圧が低い欠
点がある。また、非水溶液系の電解質は金属の析出を生
じて容量が低下する欠点がある。(Problems to be Solved by the Invention) However, those using an aqueous electrolyte have a drawback of low withstand voltage. In addition, non-aqueous electrolytes have the disadvantage that metal precipitation occurs and the capacity decreases.
特に、過塩素酸塩を用いたものは、高電圧、高温状態で
ラジカルが発生し易く、電解液が分解し易くなる欠点が
ある。In particular, those using perchlorate have the disadvantage that radicals are likely to be generated under high voltage and high temperature conditions, and the electrolyte is likely to decompose.
本発明の目的は、以上の欠点を改良し、耐圧を向上し８
吊を増加しうる電気工ｆｆ１ｌｌｆｆｌコンデンサを提
供するものである。The purpose of the present invention is to improve the above-mentioned drawbacks and improve the withstand voltage.
The present invention provides an electrician ff1llffl capacitor that can increase the load.
（ｖ１題を解決するための手段）
本発明は、上記の目的を達成するために、分極性電極、
セパレータ及び集電体からなり電解液を含浸したコンデ
ンサ素子をケースに収納した電気二重層コンデンサにお
いて、電解質としてピリジニウム化合物、ジピリジニウ
ム化合物、ビスビロジニウム化合物、ビペリジニウム化
合物、ヘキサメトニウム化合物、ペンジオミド化合物、
モルホリニウム化合物の８塩を少なくとも一種類含むこ
とを特徴とする電気二重層コンデンサを提供するもので
ある。(Means for solving problem v1) In order to achieve the above object, the present invention provides polarizable electrodes,
In an electric double layer capacitor in which a capacitor element comprising a separator and a current collector and impregnated with an electrolytic solution is housed in a case, the electrolyte may include a pyridinium compound, a dipyridinium compound, a bisvirodinium compound, a biperidinium compound, a hexamethonium compound, a pendiomide compound,
The present invention provides an electric double layer capacitor characterized by containing at least one type of morpholinium compound 8-salt.
（作用）
ピリジニウム化合物やジピリジニウム化合物、ビスピロ
ジニウム化合物、ビペリジニウム化合物、ヘキサメトニ
ウム化合物、ペンジオミド化合物、モルホリニウム化合
物の８塩はいすも温度５０℃以上、電圧２Ｖ以上におい
て、電解液に対して過塩素酸塩よりも化学的に安定であ
る。また、アルカリ金属やアルカリ土類金属のようには
金属の析出がない。そのためコンデンサの耐圧を向上で
きる。(Action) 8 salts of pyridinium compounds, dipyridinium compounds, bispyrodinium compounds, biperidinium compounds, hexamethonium compounds, pendiomide compounds, and morpholinium compounds are mixed with perchloric acid against the electrolyte at a temperature of 50°C or higher and a voltage of 2V or higher. Chemically more stable than salt. Also, unlike alkali metals and alkaline earth metals, there is no metal precipitation. Therefore, the withstand voltage of the capacitor can be improved.
（実施例） 以下、本発明を実施例に基づいて説明する。(Example) Hereinafter, the present invention will be explained based on examples.
分極性電極としては電解液に電気化学的に不活性な活性
炭や活性炭４Ｍ維、カーボンブラック等をプレスしてシ
ート状にし円形に打ち抜いたものを用いる。As the polarizable electrode, a sheet formed by pressing electrochemically inactive activated carbon, activated carbon 4M fiber, carbon black, etc. into an electrolytic solution and forming it into a sheet and punching it out into a circular shape is used.
電解液の溶媒には、電気化学的に安定な非水溶媒である
プロピレンカーボネートやγ−ブチルラクトン、アセト
ニトリル、ジメチルホルムアミド、１．２−ジメトキシ
エタン、スルボラン、ニトロメタン等を用いる。このう
ち特にプロピレンカーボネート、γ−ブチルラクトン、
アセトニトリルが好ましく、実質的に無水の状態で使用
する。As the solvent for the electrolytic solution, electrochemically stable non-aqueous solvents such as propylene carbonate, γ-butyl lactone, acetonitrile, dimethylformamide, 1,2-dimethoxyethane, sulforane, nitromethane, etc. are used. Among these, especially propylene carbonate, γ-butyl lactone,
Acetonitrile is preferred and is used in a substantially anhydrous state.
また、電解液の溶質にはピリジニウム化合物やビスピロ
ジニウム化合物、ジビリジニウム化合物、ビペリジニウ
ム化合物、ピペラジニウム化合物、ヘキサメトニウム化
合物、ペンジオミド化合物、モルホリニウム化合物の８
塩を用いる。例えばピリジニウム化合物の塩として四フ
ッ化ホウ酸メチルピリジニウムやチオシアン酸セチルピ
リジニウム、四フフ化タンタル酸エチルピリジニウム、
トリフルオロメタンスルホン酸セチルピリジニウム等が
ある。ジビリジニウム化合物の塩には四ツ・ｌ化ホウ酸
１．１−一ジヘプチルー４，４′−ジビリジニウム、チ
オシアン酸セチル１．１′−ジムブチル−４，４′−ジ
ビリジニウム、四フッ化タンタル酸１，１゛−ジメチル
−４，４′−ジピリジニウム、トリフルオロメタンスル
ホンｉｌｌ、１−一ジメチルー４，４−−ジビリジニウ
ム等がある。In addition, solutes in the electrolyte include pyridinium compounds, bispyrodinium compounds, diviridinium compounds, biperidinium compounds, piperazinium compounds, hexamethonium compounds, pendiomide compounds, and morpholinium compounds.
Use salt. For example, as salts of pyridinium compounds, methylpyridinium tetrafluoroborate, cetylpyridinium thiocyanate, ethylpyridinium tantalate tetrafluoride,
Examples include cetylpyridinium trifluoromethanesulfonate. Salts of diviridinium compounds include 1,1-mono-diheptyl-4,4'-diviridinium tetra-l boric acid, 1,1'-dimbutyl-4,4'-diviridinium cetyl thiocyanate, 1, Examples include 1'-dimethyl-4,4'-dipyridinium, trifluoromethanesulfone ill, and 1-1 dimethyl-4,4-dipyridinium.
ビスピロジニウム化合物の塩としては、四フフ化ホウ酸
ベントリニウム、チオシアン酸ベントリニウム、四フフ
化タンタル酸ベントリニウム、トリフルオロメタンスル
ホン酸ペントリニウム等がある。ビペリジニウム化合物
の塩には四フフ化ホウ酸ジメチルビペリジニウム、チオ
シアン酸ジメチルビペリジニウム、四フッ化タンタル酸
ジメチルビペリジニウム、トリフルオロメタンスルホン
酸ジメチルビペリジニウム等がある。ピペラジニウム化
合物の塩には四フッ化ホウｕｉ、ｉ−−ジメチル−４−
フェニルピペラジニウム、四フッ化ホウＭ１，１−４−
トリメチルピペラジニウム、四フッ化ホウＭ１１，１，
４，４−テトラメチルピペラジニウム、チオシアン酸１
，１−ジメチル−４−フエニルビペラジニウム、チオシ
アン酸１，１−４−１−リメチルビペラジニウム、チオ
シアン酸１．１，４．４−テトラメチルピペラジニウム
、四フッ化タンタル酸ジメチル１，１−ジメチル−４−
フエニルビペラジニウム、四フッ化タンタル酸１，１−
４−トリメチルピペラジニウム、四７ツ化タンタルＭ１
，１，４．４−テトラメチルピペラジニウム、トリフル
オロメタンスルホン酸１゜１−ジメチル−４−フェニル
ビへラジニウム、トリフルオロメタンスルホン酸ジメチ
ル１，１−４−トリメチルビペラジニウム、トリフルオ
ロメタンスルホン１１，１，４，４−テトラメチルピペ
ラジニウム等がある。ヘキサメトニウム化合物の塩には
、四フフ化ホウ酸へキサメトニウム、チオシアン酸へキ
サメトニウム、トリフルオロメタ〉スルホン酸ヘキサメ
トニウム等がある。ペンジオミド化合物の塩には、四フ
フ化ホウ酸ペンジオミド、チオシアン酸ペンジオミド、
四フッ化タンタル酸ペンジオミド、トリフルオロメタン
スルホン酸ペンジオミド等がある。モルホリニウム化合
物には、四フン化ホウ酸ジメチルモルホリニウム、チオ
シアン酸ジメチルモルホリニウム等がある。Examples of the salts of bispyrodinium compounds include bentolinium tetrafluoroborate, bentolinium thiocyanate, bentolinium tetrafluorotantalate, and pentolinium trifluoromethanesulfonate. Salts of biperidinium compounds include dimethylbiperidinium tetrafluoroborate, dimethylbiperidinium thiocyanate, dimethylbiperidinium tetrafluorotantalate, dimethylbiperidinium trifluoromethanesulfonate, and the like. Salts of piperazinium compounds include boron tetrafluoride, i-dimethyl-4-
Phenylpiperazinium, boron tetrafluoride M1,1-4-
Trimethylpiperazinium, boron tetrafluoride M11,1,
4,4-tetramethylpiperazinium, thiocyanate 1
, 1-dimethyl-4-phenylbiperazinium, 1,1-4-1-limethylbiperazinium thiocyanate, 1,1,4,4-tetramethylpiperazinium thiocyanate, tetrafluoride Dimethyl tantalate 1,1-dimethyl-4-
Phenylbiperazinium, 1,1-tetrafluorotantalic acid
4-trimethylpiperazinium, tantalum tetra7tride M1
, 1,4.4-tetramethylpiperazinium, 1-dimethyl-4-phenylbiherazinium trifluoromethanesulfonate, dimethyl 1,1-4-trimethylbiperazinium trifluoromethanesulfonate, trifluoromethanesulfone 11 , 1,4,4-tetramethylpiperazinium, and the like. Salts of hexamethonium compounds include hexamethonium tetrafluoroborate, hexamethonium thiocyanate, hexamethonium trifluorometa sulfonate, and the like. Salts of pendiomide compounds include tetrafluoroboric acid pendiomide, thiocyanic acid pendiomide,
Examples include tetrafluorotantalic acid pendiomide, trifluoromethanesulfonic acid pendiomide, and the like. Morpholinium compounds include dimethylmorpholinium tetrafluoroborate, dimethylmorpholinium thiocyanate, and the like.
セパレータには厚さ数１０μｍのポリプロピレン等の不
織布を用いる。A nonwoven fabric such as polypropylene with a thickness of several tens of micrometers is used for the separator.
集電体はケースを兼ねてステンレス製のボタン形のケー
スを用いる。A stainless steel button-shaped case is used as the current collector, which also serves as the case.
上記実施例によれば、電解液としてプロピレンカーボネ
ート等の安定な非水溶媒に、ピリジニウム化合物やビス
ピロジニウム化合物等の各端からなるＦｆＪ質を加えた
物質を用いているために、化学的に安定で、コンデンサ
の耐圧が向上する。According to the above embodiment, the electrolyte is chemically stable because it uses a stable non-aqueous solvent such as propylene carbonate and an FfJ substance consisting of each end such as a pyridinium compound or a bispyrodinium compound. , the withstand voltage of the capacitor is improved.
（発明の効果）
以上の通り、本発明によれば、電解質としてピリジニウ
ム化合物やビスピロジニウム化合物等の各端を含んでい
るために耐圧が高く信頼性の高い電気二平層コンデンサ
がをられる。(Effects of the Invention) As described above, according to the present invention, an electric two-layer capacitor with high withstand voltage and high reliability can be obtained because each end contains a pyridinium compound, a bispyrodinium compound, etc. as an electrolyte.
特許出願人 日立コンデンサ株式会社Patent applicant: Hitachi Capacitor Co., Ltd.
Claims (1)
液を含浸したコンデンサ素子をケースに収納した電気二
重層コンデンサにおいて、電解質としてピリジニウム化
合物、ジピリジニウム化合物、ビスピロジニウム化合物
、ビペリジニウム化合物、ピペラジニウム化合物、ヘキ
サメトニウム化合物、ペンジオミド化合物、モルホリニ
ウム化合物の各塩のうち少なくとも一種類含むことを特
徴とする電気二重層コンデンサ。(1) In an electric double layer capacitor in which a capacitor element comprising a polarizable electrode, a separator, and a current collector and impregnated with an electrolyte is housed in a case, a pyridinium compound, a dipyridinium compound, a bispyrodinium compound, a biperidinium compound, a piperazinium compound, An electric double layer capacitor comprising at least one salt of a hexamethonium compound, a pendiamide compound, and a morpholinium compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63104641A JPH01274412A (en) | 1988-04-27 | 1988-04-27 | Electric double-layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63104641A JPH01274412A (en) | 1988-04-27 | 1988-04-27 | Electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01274412A true JPH01274412A (en) | 1989-11-02 |
Family
ID=14386079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63104641A Pending JPH01274412A (en) | 1988-04-27 | 1988-04-27 | Electric double-layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01274412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009295922A (en) * | 2008-06-09 | 2009-12-17 | Kaneka Corp | Energy storage device |
-
1988
- 1988-04-27 JP JP63104641A patent/JPH01274412A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009295922A (en) * | 2008-06-09 | 2009-12-17 | Kaneka Corp | Energy storage device |
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