JP3268938B2 - Nickel-hydrogen storage battery - Google Patents
Nickel-hydrogen storage batteryInfo
- Publication number
- JP3268938B2 JP3268938B2 JP07946994A JP7946994A JP3268938B2 JP 3268938 B2 JP3268938 B2 JP 3268938B2 JP 07946994 A JP07946994 A JP 07946994A JP 7946994 A JP7946994 A JP 7946994A JP 3268938 B2 JP3268938 B2 JP 3268938B2
- Authority
- JP
- Japan
- Prior art keywords
- nickel
- hydrogen storage
- storage battery
- battery
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052739 hydrogen Inorganic materials 0.000 title claims description 27
- 239000001257 hydrogen Substances 0.000 title claims description 27
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 239000004745 nonwoven fabric Substances 0.000 claims description 9
- 150000003568 thioethers Chemical class 0.000 claims description 5
- 125000003277 amino group Chemical group 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 2
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- 229910018007 MmNi Inorganic materials 0.000 description 1
- 229910002640 NiOOH Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
- Cell Separators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はニッケル−水素蓄電池に
係わり、詳しくはその保存特性を改善することを目的と
したセパレータの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nickel-hydrogen storage battery, and more particularly to an improvement in a separator for improving the storage characteristics.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
水素を可逆的に吸蔵及び放出することが可能な水素吸蔵
合金を負極に用いたニッケル−水素蓄電池が、エネルギ
ー密度が高い、クリーンである、ニッケル−カドミウム
蓄電池と電圧がほぼ同じであるため互換性を有する、な
どの利点を有することから、次世代の密閉型アルカリ蓄
電池として注目されている。2. Description of the Related Art In recent years,
Nickel-hydrogen storage batteries that use a hydrogen storage alloy capable of reversibly storing and releasing hydrogen for the negative electrode have a high energy density, are clean, and are compatible with nickel-cadmium storage batteries because the voltage is almost the same. Therefore, it has been noted as a next-generation sealed alkaline storage battery.
【０００３】しかしながら、現在実用化されているニッ
ケル−水素蓄電池には、さらに改善すべき幾つかの点が
ある。保存特性も、その一つである。すなわち、従来の
ニッケル−水素蓄電池には、自己放電し易いために保存
特性が良くないという問題がある。[0003] However, the nickel-hydrogen storage battery currently in practical use has several points to be further improved. Storage characteristics are one of them. That is, the conventional nickel-hydrogen storage battery has a problem that storage characteristics are not good because self-discharge is easy.
【０００４】ニッケル−水素蓄電池の自己放電は、水素
吸蔵合金（Ｍ）中のＮｉ、Ｃｏ、Ａｌ、Ｍｎなどの合金
成分が電解液中に溶出して生じた金属イオン（酸化、還
元によりイオン価が変化する金属イオン）が、正極側で
酸化され（例えば、Ｃｏ2+⇒Ｃｏ3+＋ｅ- ；ＮｉＯＯＨ
＋ｅ- ⇒Ｎｉ（ＯＨ）2 ）、負極側で還元される（例え
ば、Ｃｏ3+＋ｅ- ⇒Ｃｏ2+；Ｍ−Ｈ⇒Ｍ＋Ｈ+ ＋ｅ- ）
という酸化還元反応が繰り返されること（シャトル効
果）により起こると言われている。因みに、ニッケル−
カドミウム蓄電池では、この種の自己放電は殆ど問題と
されない。これは、ニッケル−カドミウム蓄電池の負極
に用いられる酸化カドミウム（ＣｄＯ）には、Ｃｏ、Ａ
ｌ、Ｍｎなどは一般に添加されておらず、また不純物と
してもこれらの金属を含有していないので、上述した反
応が殆ど起こらないためである。[0004] Self-discharge of a nickel-hydrogen storage battery is caused by metal ions generated by elution of alloy components such as Ni, Co, Al, and Mn in a hydrogen storage alloy (M) into an electrolytic solution. Is oxidized on the positive electrode side (for example, Co 2+ ⇒Co 3+ + e − ; NiOOH
+ E - ⇒Ni (OH) 2 ), it is reduced at the negative electrode side (for example, Co 3+ + e - ⇒Co 2+ ; M-H⇒M + H + + e -)
It is said that the oxidation-reduction reaction is repeated (shuttle effect). By the way, nickel
With cadmium batteries, this type of self-discharge is of little concern. This is because cadmium oxide (CdO) used for the negative electrode of a nickel-cadmium storage battery includes Co, A
This is because l, Mn, and the like are generally not added, and do not contain these metals as impurities, so that the above-described reaction hardly occurs.
【０００５】本発明は、ニッケル−水素蓄電池における
上述の問題を解決するべくなされたものであって、その
目的とするところは、自己放電が起こりにくいために保
存特性に優れるニッケル−水素蓄電池を提供するにあ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems in a nickel-hydrogen storage battery, and an object of the present invention is to provide a nickel-hydrogen storage battery having excellent storage characteristics because self-discharge does not easily occur. To be.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の本発明に係るニッケル−水素蓄電池は、水素吸蔵合金
を負極に用いたニッケル−水素蓄電池であって、セパレ
ータとして下記化２で表されるポリフェニレンスルフィ
ド誘導体からなる不織布が用いられてなる。A nickel-hydrogen storage battery according to the present invention for achieving the above object is a nickel-hydrogen storage battery using a hydrogen storage alloy for a negative electrode, and is represented by the following formula 2 as a separator. Nonwoven fabric made of a polyphenylene sulfide derivative is used.
【０００７】[0007]
【化２】 Embedded image
【０００８】 〔但し、化２中のＲはメチル基、水酸基又はアミノ基で
ある。〕[However, R in Chemical formula 2 is a methyl group, a hydroxyl group or an amino group. ]
【０００９】本発明におけるセパレータは、フェニレン
基に、メチル基、水酸基又はアミノ基（電子供与性の置
換基）を有する上記化２で表されるポリフェニレンスル
フィド誘導体である。金属イオンが配位したときにＳδ
+ が発生し、電子供与性の置換基による安定化効果が発
生する。The separator according to the present invention is a polyphenylene sulfide derivative represented by the above formula 2 having a methyl group, a hydroxyl group or an amino group (an electron donating substituent) in the phenylene group. When a metal ion is coordinated, Sδ
+ Is generated, and the stabilizing effect of the electron-donating substituent occurs.
【００１０】なお、スルホン化ポリプロピレンからなる
セパレータをニッケル−水素蓄電池に用いることが従来
公知となっているが（特開昭６２−１１５６５７号参
照）、スルホン化ポリプロピレン中に含有されるイオウ
には非共有電子対が存在せず、それゆえこのセパレータ
は、金属イオンがポリフェニレンスルフィド又はその誘
導体のイオウ部分に配位結合して捕捉される本発明に係
るセパレータとは、全く異質のものである。Although it has been known that a separator made of sulfonated polypropylene is used for a nickel-hydrogen storage battery (see Japanese Patent Application Laid-Open No. 62-115657), sulfur contained in sulfonated polypropylene is not used. This separator is completely different from the separator according to the invention, in which there is no shared electron pair and therefore the metal ions are coordinated and trapped in the sulfur part of the polyphenylene sulfide or derivative thereof.
【００１１】[0011]
【作用】水素吸蔵合金から電解液中に溶出したイオン価
変動型の金属イオン（この種の金属イオンがシャトル効
果の原因となる。）が、ポリフェニレンスルフィド誘導
体中の−Ｓ−基に配位し、捕捉される。これにより、自
己放電の原因となるシャトル効果が抑制される。The metal ions of the ionic value fluctuation type eluted from the hydrogen storage alloy into the electrolytic solution (these metal ions cause the shuttle effect) are coordinated to the -S- group in the polyphenylene sulfide derivative. Be captured. This suppresses the shuttle effect that causes self-discharge.
【００１２】[0012]
【実施例】以下、本発明を実施例に基づいてさらに詳細
に説明するが、本発明は下記実施例により何ら限定され
るものではなく、その要旨を変更しない範囲において適
宜変更して実施することが可能なものである。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples, and may be carried out by appropriately changing the scope of the present invention. Is possible.
【００１３】〔ニッケル−水素蓄電池の組立〕 （製造例１） 市販のミッシュメタル（Ｍｍ）、ニッケル、コバルト、
アルミニウム及びマンガンを所定の割合で秤量して混合
し、アーク溶解炉を用いて溶融させた後、冷却して、組
成式：ＭｍＮｉ3.2 Ｃｏ1.0 Ａｌ0.6 Ｍｎ0.2 で表され
る水素吸蔵合金塊を得、この合金塊を機械的に粉砕して
平均粒径５０μｍの水素吸蔵合金粉末を作製した。[Assembly of Nickel-Hydrogen Storage Battery] (Production Example 1) Commercially available misch metal (Mm), nickel, cobalt,
Aluminum and manganese are weighed and mixed at a predetermined ratio, melted using an arc melting furnace, and then cooled to obtain a hydrogen storage alloy mass represented by a composition formula: MmNi 3.2 Co 1.0 Al 0.6 Mn 0.2. This alloy lump was mechanically pulverized to produce a hydrogen storage alloy powder having an average particle size of 50 μm.
【００１４】次いで、この水素吸蔵合金粉末１００重量
部に、０．５重量部のポリエチレンオキシドと、分散媒
としての水とを加えて混練し、スラリーを調製した。Next, 0.5 parts by weight of polyethylene oxide and water as a dispersion medium were added to 100 parts by weight of the hydrogen storage alloy powder and kneaded to prepare a slurry.
【００１５】次いで、上記スラリーを容器に流し込み、
そのスラリー中にニッケルめっきしたパンチングメタル
からなる導電性の支持体を通過させて該支持体の両面に
前記スラリーを浸漬塗りした後、乾燥し、加圧成形し
て、水素吸蔵合金電極を作製した。Next, the slurry is poured into a container,
The slurry was passed through a conductive support made of nickel-plated punched metal, and the slurry was immersed and coated on both sides of the support, dried, and pressed to prepare a hydrogen storage alloy electrode. .
【００１６】負極としての上記水素吸蔵合金電極と、正
極として公知の焼結式ニッケル極とを、セパレータとし
てのポリフェニレンスルフィド（ＰＰＳ）からなる不織
布を介して渦巻き状に巻回して電極体とし、この電極体
を電池缶内に収納した。The above-mentioned hydrogen-absorbing alloy electrode as a negative electrode and a sintered nickel electrode known as a positive electrode are spirally wound through a nonwoven fabric made of polyphenylene sulfide (PPS) as a separator to form an electrode body. The electrode body was housed in a battery can.
【００１７】次いで、水酸化カリウムを２５重量％、水
酸化ナトリウムを２重量％、水酸化リチウムを１重量％
含有する水溶液を電解液として電池缶内に注液した後、
封口してＡＡサイズのニッケル−水素蓄電池Ａ（理論容
量：１０００ｍＡｈ）を組み立てた。Next, 25% by weight of potassium hydroxide, 2% by weight of sodium hydroxide and 1% by weight of lithium hydroxide
After injecting the contained aqueous solution as an electrolyte into the battery can,
The container was sealed, and an AA-size nickel-hydrogen storage battery A (theoretical capacity: 1000 mAh) was assembled.
【００１８】（製造例２） セパレータとして、ポリフェニレンスルフィド（ＰＰ
Ｓ）からなる不織布に代えてポリアミド（商品名「ナイ
ロン」）からなる不織布を用いたこと以外は製造例１と
同様にして、ニッケル−水素蓄電池Ｂを組み立てた。(Production Example 2) Polyphenylene sulfide (PP) was used as a separator.
A nickel-hydrogen storage battery B was assembled in the same manner as in Production Example 1 except that a nonwoven fabric made of polyamide (trade name “nylon”) was used instead of the nonwoven fabric made of S).
【００１９】〔初期の放電容量〕 ニッケル−水素蓄電池Ａ及びＢについて、０．１Ｃで１
２時間充電した後、０．１Ｃで１Ｖまで放電して、初期
の放電容量Ｄ１を調べた。結果を表１に示す。[Initial Discharge Capacity] Regarding nickel-hydrogen storage batteries A and B, 1 at 0.1 C
After charging for 2 hours, the battery was discharged at 0.1 C to 1 V, and the initial discharge capacity D1 was examined. Table 1 shows the results.
【００２０】〔保存後の残存容量〕 本発明電池Ａ及び比較電池Ｂについて、０．１Ｃで１２
時間充電し、４５°Ｃで１４日間保存した後、０．１Ｃ
で１Ｖまで放電して、保存後の残存容量Ｄ２を調べた。
結果を表１に示す。[Remaining capacity after storage] For the battery A of the present invention and the comparative battery B, 12
After charging for 45 hours and storing at 45 ° C for 14 days, 0.1C
, And the remaining capacity D2 after storage was examined.
Table 1 shows the results.
【００２１】〔保存後の放電容量〕 次いで、０．１Ｃで１２時間充電した後、０．１Ｃで１
Ｖまで放電して、保存後の放電容量Ｄ３を調べた。結果
を表１に示す。[Discharge capacity after storage] Next, the battery was charged at 0.1 C for 12 hours, and then charged at 0.1 C for 1 hour.
The battery was discharged to V and the discharge capacity D3 after storage was examined. Table 1 shows the results.
【００２２】[0022]
【表１】 [Table 1]
【００２３】表１に示すように、電池Ａでは保存後の残
存容量Ｄ２が大きいのに対して、電池Ｂでは保存後の残
存容量Ｄ１が小さい。このことから、セパレータとし
て、従来広く用いられているポリアミドからなる不織布
に代えてポリフェニレンスルフィドからなる不織布を用
いることにより、自己放電が有効に抑制されて保存特性
が顕著に向上することが分かる。As shown in Table 1, the remaining capacity D2 of the battery A after storage is large, while the remaining capacity D1 of the battery B after storage is small. From this, it can be seen that by using a nonwoven fabric made of polyphenylene sulfide as a separator in place of a nonwoven fabric made of polyamide which has been widely used in the past, self-discharge is effectively suppressed and storage characteristics are significantly improved.
【００２４】上記の製造例では、セパレータとしてポリ
フェニレンスルフィドからなる不織布を用いたが、フェ
ニレン基の水素がメチル基、水酸基又はアミノ基で置換
されたものを用いた場合は、同等又はそれ以上の優れた
保存特性向上効果が発現されることを確認している。In the above production example, a non-woven fabric made of polyphenylene sulfide was used as a separator, but when a hydrogen of a phenylene group was substituted with a methyl group, a hydroxyl group or an amino group, an equivalent or more excellent non-woven fabric was obtained. It has been confirmed that the effect of improving storage characteristics is exhibited.
【００２５】[0025]
【発明の効果】セパレータとして用いられている特定の
ポリフェニレンスルフィド誘導体が、自己放電の原因と
なる電解液中の金属イオンを捕捉し、それらの正負極板
間の移動を阻止して、自己放電を起こりにくくするの
で、保存特性に優れる。The specific polyphenylene sulfide derivative used as a separator captures metal ions in the electrolytic solution that cause self-discharge, and prevents them from moving between the positive and negative electrodes, thereby preventing self-discharge. Since it hardly occurs, it has excellent storage characteristics.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西尾 晃治 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (72)発明者 斎藤 俊彦 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (56)参考文献 特開 平５−182654（ＪＰ，Ａ) 特開 平５−74438（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/16 ──────────────────────────────────────────────────の Continuing on the front page (72) Koji Nishio, Inventor 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Toshihiko Saito 2-5-2, Keihanhondori, Moriguchi-shi, Osaka No. 5 Inside Sanyo Electric Co., Ltd. (56) References JP-A-5-182654 (JP, A) JP-A-5-74438 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 2/16
Claims (1)
素蓄電池であって、セパレータとして下記化１で表され
るポリフェニレンスルフィド誘導体からなる不織布が用
いられていることを特徴とするニッケル−水素蓄電池。 【化１】 〔但し、化１中のＲはメチル基、水酸基又はアミノ基で
ある。〕1. A nickel-hydrogen storage battery using a hydrogen storage alloy for a negative electrode, wherein a non-woven fabric made of a polyphenylene sulfide derivative represented by the following formula 1 is used as a separator. . Embedded image [However, R in Chemical formula 1 is a methyl group, a hydroxyl group, or an amino group. ]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07946994A JP3268938B2 (en) | 1994-03-25 | 1994-03-25 | Nickel-hydrogen storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07946994A JP3268938B2 (en) | 1994-03-25 | 1994-03-25 | Nickel-hydrogen storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07262980A JPH07262980A (en) | 1995-10-13 |
| JP3268938B2 true JP3268938B2 (en) | 2002-03-25 |
Family
ID=13690754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07946994A Expired - Fee Related JP3268938B2 (en) | 1994-03-25 | 1994-03-25 | Nickel-hydrogen storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3268938B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000108249A (en) * | 1998-10-08 | 2000-04-18 | Tonen Chem Corp | Multilayer composite film |
| KR20070001905A (en) * | 2003-12-11 | 2007-01-04 | 듀폰 테이진 어드밴스드 페이퍼 가부시끼가이샤 | Heat-resistant separators and electrical and electronic components using them |
-
1994
- 1994-03-25 JP JP07946994A patent/JP3268938B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07262980A (en) | 1995-10-13 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |