JPH1040916A - Hydrogen absorbing electrode and nickel hydrogen secondary battery using it - Google Patents
Hydrogen absorbing electrode and nickel hydrogen secondary battery using itInfo
- Publication number
- JPH1040916A JPH1040916A JP8208902A JP20890296A JPH1040916A JP H1040916 A JPH1040916 A JP H1040916A JP 8208902 A JP8208902 A JP 8208902A JP 20890296 A JP20890296 A JP 20890296A JP H1040916 A JPH1040916 A JP H1040916A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen storage
- paste
- polyvinyl alcohol
- hydrogen
- polyvinylpyrrolidone
- 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.)
- Withdrawn
Links
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
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水素を可逆的に吸
脱蔵することができる水素吸蔵合金粉末を用いた水素吸
蔵電極および該水素吸蔵電極を負極に用いたニッケル水
素二次電池に関する。The present invention relates to a hydrogen storage electrode using a hydrogen storage alloy powder capable of reversibly storing and desorbing hydrogen, and a nickel-hydrogen secondary battery using the hydrogen storage electrode as a negative electrode.
【０００２】[0002]
【従来の技術】従来、水素吸蔵電極の作製にあたり、水
素吸蔵合金粉末を支持体に保持させるためのバインダー
兼増粘剤としては、一般にポリビニルアルコールが用い
られていた。2. Description of the Related Art Conventionally, in producing a hydrogen storage electrode, polyvinyl alcohol has generally been used as a binder and a thickener for holding a hydrogen storage alloy powder on a support.
【０００３】しかしながら、このポリビニルアルコール
を単独でバインダーとして用いたペーストは、放置する
とポリビニルアルコールが水素吸蔵合金粉末に吸着する
ため、水素吸蔵合金と水とに分離してしまい、その結
果、ペーストの粘度が低下して、ペーストの性質が大き
く変化するため、ペーストの長期保存ができず、水素吸
蔵電極の生産性が低下するという問題があった。However, when the paste using polyvinyl alcohol alone as a binder is left to stand, the polyvinyl alcohol is adsorbed on the hydrogen storage alloy powder, so that the paste is separated into a hydrogen storage alloy and water. And the properties of the paste change greatly, so that the paste cannot be stored for a long period of time, and the productivity of the hydrogen storage electrode is reduced.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来の水素
吸蔵合金粉末を含有するペーストの保存性が悪かったと
いう問題点を解決し、水素吸蔵合金粉末を含有するペー
ストの長期保存性を確保して、水素吸蔵電極の生産性を
向上させることを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the problem that the conventional paste containing a hydrogen storage alloy powder was poor in preservability, and ensures long-term storage of a paste containing a hydrogen storage alloy powder. Thus, an object is to improve the productivity of the hydrogen storage electrode.
【０００５】[0005]
【課題を解決するための手段】本発明は、水素吸蔵合金
粉末を含有するペーストの調製にあたり、バインダーと
してポリビニルアルコールとポリビニルピロリドンの混
合物を用いることによって、ペースト保存中のポリビニ
ルアルコールの水素吸蔵合金表面への吸着を防止して、
ペーストの粘度低下を抑制し、長期保存後でもペースト
を使用できるようにして、上記目的を達成したものであ
る。According to the present invention, in preparing a paste containing a hydrogen-absorbing alloy powder, a mixture of polyvinyl alcohol and polyvinylpyrrolidone is used as a binder, whereby the surface of the hydrogen-absorbing alloy of polyvinyl alcohol is stored during paste storage. To prevent adsorption to
The object has been achieved by suppressing a decrease in the viscosity of the paste so that the paste can be used even after long-term storage.
【０００６】上記のように、ペースト中にポリビニルピ
ロリドンを含有させると、ポリビニルピロリドンがまず
水素吸蔵合金の表面に吸着して、水素吸蔵合金の表面に
ポリビニルピロリドン層を形成する。このポリビニルピ
ロリドン層が水素吸蔵合金表面へのポリビニルアルコー
ルの吸着を阻害し、ペーストの粘性を支配しているポリ
ビニルアルコールをペースト調製時のまま保つので、ペ
ーストの粘度が低下せず、長期保存後でもペーストが使
用できるようになる。[0006] As described above, when polyvinylpyrrolidone is contained in the paste, polyvinylpyrrolidone is first adsorbed on the surface of the hydrogen storage alloy to form a polyvinylpyrrolidone layer on the surface of the hydrogen storage alloy. This polyvinylpyrrolidone layer inhibits the adsorption of polyvinyl alcohol on the surface of the hydrogen storage alloy, and keeps the polyvinyl alcohol that governs the viscosity of the paste at the time of paste preparation, so that the viscosity of the paste does not decrease and even after long-term storage. Paste can be used.
【０００７】[0007]
【発明の実施の形態】本発明において、ポリビニルピロ
リドンの全バインダー中の分率としては５〜２５重量
％、特に１０〜１６重量％であることが好ましい。すな
わち、ポリビニルアルコールが７５〜９５重量％で、ポ
リビニルピロリドンが５〜２５重量％であることが好ま
しく、特にポリビニルアルコールが８４〜９０重量％
で、ポリビニルピロリドンが１０〜１６重量％であるこ
とが好ましい。ポリビニルピロリドンの分率が５重量％
より少ない場合は、ポリビニルアルコールの水素吸蔵合
金表面への吸着を防止して、ペーストの粘度を適切に保
つ効果が充分に発現しなくなるおそれがあり、ポリビニ
ルピロリドンが２５重量％より多い場合は、それに伴う
ポリビニルアルコールの減少によって、ポリビニルアル
コールにより保たれているペーストの流動性が低下し
て、ペーストを支持体に塗着する際の作業性が悪くなる
おそれがある。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the fraction of polyvinylpyrrolidone in the total binder is preferably 5 to 25% by weight, particularly preferably 10 to 16% by weight. That is, it is preferable that the polyvinyl alcohol is 75 to 95% by weight and the polyvinyl pyrrolidone is 5 to 25% by weight, and particularly, the polyvinyl alcohol is 84 to 90% by weight.
It is preferable that polyvinyl pyrrolidone is 10 to 16% by weight. 5% by weight of polyvinylpyrrolidone
If the amount is less, the effect of preventing the adsorption of polyvinyl alcohol on the surface of the hydrogen storage alloy may not be sufficiently exhibited to maintain the viscosity of the paste properly. If the amount of polyvinylpyrrolidone is more than 25% by weight, Due to the accompanying decrease in polyvinyl alcohol, the fluidity of the paste held by the polyvinyl alcohol is reduced, and the workability when applying the paste to the support may be deteriorated.
【０００８】本発明において用いるポリビニルアルコー
ルは、その平均重合度が１００〜１００００であること
が好ましい。ポリビニルアルコールの平均重合度が１０
０より小さい場合は、粘度が低くなりすぎ、増粘剤とし
ての効果が充分に発現しなくなるおそれがあり、ポリビ
ニルアルコールの平均重合度が１００００より大きい場
合は、粘度が高くなりすぎて流動性が悪くなり、ペース
ト塗着時の作業性が低下するおそれがある。The average degree of polymerization of the polyvinyl alcohol used in the present invention is preferably 100 to 10,000. Average degree of polymerization of polyvinyl alcohol is 10
If it is less than 0, the viscosity becomes too low, and the effect as a thickener may not be sufficiently exhibited. If the average polymerization degree of polyvinyl alcohol is more than 10,000, the viscosity becomes too high and the fluidity becomes too high. It may worsen, and the workability at the time of paste application may decrease.
【０００９】また、ポリビニルピロリドンは、その平均
重合度が１０００〜５００００であることが好ましい。
ポリビニルピロリドンの平均重合度が１０００より小さ
い場合は、粘度が低くなりすぎて増粘剤としての作用を
充分に果たし得なくなるおそれがあり、ポリビニルピロ
リドンの平均重合度が５０００より大きい場合は、ペー
ストの粘度が高くなりすぎて流動性が低下し、作業性が
悪くなるおそれがある。The average degree of polymerization of polyvinylpyrrolidone is preferably from 1,000 to 50,000.
When the average degree of polymerization of polyvinylpyrrolidone is less than 1000, the viscosity may be too low to sufficiently act as a thickener, and when the average degree of polymerization of polyvinylpyrrolidone is more than 5,000, There is a possibility that the viscosity becomes too high, the fluidity is reduced, and the workability is deteriorated.
【００１０】ペーストの調製にあたり、上記バインダー
は、バインダー全体として水素吸蔵合金粉末との総量中
で０．１〜２５重量％程度使用するのが好ましい。In preparing the paste, the binder is preferably used in an amount of about 0.1 to 25% by weight based on the total amount of the binder and the hydrogen storage alloy powder.
【００１１】[0011]
【実施例】つぎに、実施例をあげて本発明をより具体的
に説明する。ただし、本発明はそれらの実施例のみに限
定されるものではない。なお、以下の実施例などにおい
て、濃度や量を示す％は重量％である。Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to only these examples. In the following examples,% indicating the concentration or amount is% by weight.
【００１２】実施例１ 水素吸蔵合金粉末１００ｇに対して平均重合度１０００
０のポリビニルピロリドンの１％水溶液１３．０ｇおよ
び平均重合度１５００のポリビニルアルコールの３％水
溶液３２ｇを順次添加し攪拌混合してペーストを調製し
た。使用した水素吸蔵合金はＭｍＮｉ3.55Ｃｏ0.75Ｍｎ
0.4 Ａｌ0.3 Ｍｏ0.04（Ｍｍはミッシュメタル系合金）
であり、水素吸蔵合金と全バインダーとの総量中の全バ
インダーの分率は１．０８％で、全バインダー中におけ
るポリビニルピロリドンの分率は１１．８％であった。Example 1 100 g of hydrogen storage alloy powder had an average degree of polymerization of 1000
Then, 13.0 g of a 1% aqueous solution of polyvinylpyrrolidone and 32 g of a 3% aqueous solution of polyvinyl alcohol having an average degree of polymerization of 1500 were sequentially added, followed by stirring and mixing to prepare a paste. The hydrogen storage alloy used was MmNi 3.55 Co 0.75 Mn
0.4 Al 0.3 Mo 0.04 (Mm is a misch metal alloy)
And the fraction of all binders in the total amount of the hydrogen storage alloy and all binders was 1.08%, and the fraction of polyvinylpyrrolidone in all binders was 11.8%.
【００１３】上記のようにして調製したペーストを厚み
６００μｍのニッケル発泡体からなる支持体に乾燥後の
全体の厚みが６５０μｍになるように塗布し、乾燥した
後、ロールプレスで圧縮して、厚み３００μｍの水素吸
蔵電極を作製した。The paste prepared as described above is applied to a support made of nickel foam having a thickness of 600 μm so that the total thickness after drying becomes 650 μm, dried, and then compressed by a roll press to obtain a thickness. A 300 μm hydrogen storage electrode was produced.
【００１４】実施例２ 実施例１と同様の水素吸蔵合金粉末１００ｇに対して平
均重合度１００００のポリビニルピロリドンの１％水溶
液５．８ｇおよび平均重合度１５００のポリビニルアル
コールの３％水溶液３２ｇを順次添加し攪拌混合してペ
ーストを調製した。水素吸蔵合金と全バインダーとの総
量中の全バインダーの分率は１．０１％であり、全バイ
ンダー中におけるポリビニルピロリドンの分率は５．８
％であった。Example 2 5.8 g of a 1% aqueous solution of polyvinylpyrrolidone having an average degree of polymerization of 10,000 and 32 g of a 3% aqueous solution of polyvinyl alcohol having an average degree of polymerization of 1500 were sequentially added to 100 g of the hydrogen storage alloy powder as in Example 1. Then, the mixture was stirred and mixed to prepare a paste. The fraction of all binders in the total amount of the hydrogen storage alloy and all binders was 1.01%, and the fraction of polyvinylpyrrolidone in all binders was 5.8.
%Met.
【００１５】上記のようにして調製したペーストを用い
たほかは、実施例１と同様にして水素吸蔵電極を作製し
た。A hydrogen storage electrode was prepared in the same manner as in Example 1 except that the paste prepared as described above was used.
【００１６】実施例３ 実施例１と同様の水素吸蔵合金粉末１００ｇに対して平
均重合度１００００のポリビニルピロリドンの１．５％
水溶液１０ｇおよび平均重合度１５００のポリビニルア
ルコールの３％水溶液２７ｇを順次添加し攪拌混合して
ペーストを調製した。水素吸蔵合金と全バインダーとの
総量中の全バインダーの分率は０．９５％で、全バイン
ダー中におけるポリビニルピロリドンの分率は１５．６
％であった。Example 3 1.5% of polyvinylpyrrolidone having an average degree of polymerization of 10,000 based on 100 g of the same hydrogen storage alloy powder as in Example 1.
A paste was prepared by sequentially adding 10 g of an aqueous solution and 27 g of a 3% aqueous solution of polyvinyl alcohol having an average degree of polymerization of 1500, followed by stirring and mixing. The fraction of all binders in the total amount of the hydrogen storage alloy and all binders was 0.95%, and the fraction of polyvinylpyrrolidone in all binders was 15.6.
%Met.
【００１７】上記のようにして調製したペーストを用い
たほかは、実施例１と同様にして水素吸蔵電極を作製し
た。A hydrogen storage electrode was produced in the same manner as in Example 1 except that the paste prepared as described above was used.
【００１８】実施例４ 実施例１と同様の水素吸蔵合金粉末１００ｇに対して平
均重合度１００００のポリビニルピロリドンの２．５％
水溶液１０ｇおよび平均重合度１５００のポリビニルア
ルコールの３％水溶液２７ｇを順次添加し攪拌混合して
ペーストを調製した。水素吸蔵合金と全バインダーとの
総量中の全バインダーの分率は１．０７％で、全バイン
ダー中におけるポリビニルピロリドンの分率は２３．５
％であった。Example 4 2.5% of polyvinylpyrrolidone having an average degree of polymerization of 10,000 based on 100 g of the hydrogen storage alloy powder as in Example 1.
A paste was prepared by sequentially adding 10 g of an aqueous solution and 27 g of a 3% aqueous solution of polyvinyl alcohol having an average degree of polymerization of 1500, followed by stirring and mixing. The fraction of all binders in the total amount of the hydrogen storage alloy and all binders was 1.07%, and the fraction of polyvinylpyrrolidone in all binders was 23.5.
%Met.
【００１９】上記のようにして調製したペーストを用い
たほかは、実施例１と同様にして水素吸蔵電極を作製し
た。A hydrogen storage electrode was produced in the same manner as in Example 1 except that the paste prepared as described above was used.
【００２０】比較例１ 実施例１と同様の水素吸蔵合金粉末１００ｇに対して平
均重合度１５００のポリビニルアルコールの２．６％水
溶液４２ｇを添加し攪拌混合してペーストを調製した。
水素吸蔵合金と全バインダーとの総量中の全バインダー
の分率は１．０８％であるが、この比較例１のペースト
は、上記実施例１〜４のペーストとは異なり、ポリビニ
ルピロリドンをまったく含有していない。Comparative Example 1 A paste was prepared by adding 42 g of a 2.6% aqueous solution of polyvinyl alcohol having an average degree of polymerization of 1500 to 100 g of the same hydrogen absorbing alloy powder as in Example 1, followed by stirring and mixing.
Although the fraction of the total binder in the total amount of the hydrogen storage alloy and all the binders is 1.08%, the paste of Comparative Example 1 is different from the pastes of Examples 1 to 4 in that it contains no polyvinyl pyrrolidone at all. I haven't.
【００２１】上記のようにして調製したペーストと該ペ
ーストを用いて作製した水素吸蔵電極について次の試験
を行った。The following tests were conducted on the paste prepared as described above and the hydrogen storage electrode produced using the paste.
【００２２】ペーストの経時変化：上記のようにして調
製したペーストの調製直後の粘度と流動性を調べた後、
上記ペーストを２０℃で放置し、１日後、２日後および
６日後の粘度と流動性を調べた。ペーストの粘度の経時
変化を図１に示す。また、ペーストの流動性の経時変化
を表１に示す。 Paste change with time: After examining the viscosity and fluidity of the paste prepared as described above immediately after preparation,
The paste was left at 20 ° C., and the viscosity and fluidity after 1, 2, and 6 days were examined. FIG. 1 shows the change over time in the viscosity of the paste. Table 1 shows the change over time in the fluidity of the paste.
【００２３】ペーストの粘度の測定は温度３０℃でＢ型
粘度計により測定し、流動性は温度２０℃でサンプルビ
ンにペーストを注入して所定期間放置した後、これを傾
斜させることによって調べた。そして、表１への表示に
あたっては、次の評価基準により表示した。The viscosity of the paste was measured by a B-type viscometer at a temperature of 30 ° C., and the fluidity was examined by injecting the paste into a sample bottle at a temperature of 20 ° C., allowing the paste to stand for a predetermined period, and then tilting the paste. . Then, in the display in Table 1, the following evaluation criteria were used.
【００２４】評価基準： ○ ： 流動性あり × ： 流動性なし Evaluation criteria: ○: fluidity ×: no fluidity
【００２５】[0025]
【表１】 [Table 1]
【００２６】水素吸蔵電極の重量分布の測定：前記のよ
うにして作製した水素吸蔵電極（サイズ＝１００ｍｍ×
４０ｍｍ）の重量の分布状況を調べた。その結果を図２
に示す。なお、サンプル数は各水素吸蔵電極とも１００
０個ずつである。 Measurement of weight distribution of hydrogen storage electrode : Hydrogen storage electrode prepared as described above (size = 100 mm ×
(40 mm). Figure 2 shows the result.
Shown in The number of samples was 100 for each hydrogen storage electrode.
0 each.
【００２７】電池の放電容量：つぎに、上記実施例１〜
４および比較例１の水素吸蔵電極のそれぞれと公知のペ
ースト式ニッケル電極とを組み合わせ、３０％水酸化カ
リウム水溶液を電解液として用いて公称容量５８０ｍＡ
ｈの密閉型ニッケル水素二次電池を作製した。得られた
電池を０．１４５Ａで公称容量の１２０％まで充電し、
１時間の休止後１１０ｍＡで電池電圧が１．０Ｖになる
まで放電し、放電容量を求めた。その結果を表２に示
す。 Discharge capacity of battery:
No. 4 and each of the hydrogen storage electrodes of Comparative Example 1 and a well-known paste-type nickel electrode were combined, and a 30% aqueous solution of potassium hydroxide was used as an electrolytic solution to a nominal capacity of 580 mA.
h of the sealed nickel-metal hydride secondary battery. The obtained battery is charged at 0.145 A to 120% of the nominal capacity,
After a one-hour pause, the battery was discharged at 110 mA until the battery voltage reached 1.0 V, and the discharge capacity was determined. Table 2 shows the results.
【００２８】[0028]
【表２】 [Table 2]
【００２９】表１に示すように、実施例１〜４のペース
トは、６日間放置後も流動性を有していたが、比較例１
のペーストは１日放置しただけで流動性を失っていた。
すなわち、比較例１のペーストでは、ポリビニルアルコ
ールが水素吸蔵合金粉末に吸着して、水素吸蔵合金と水
とに分離し、粘度が低下するとともに、水素吸蔵合金が
底部に沈殿してペーストとしての流動性を失っていた。As shown in Table 1, the pastes of Examples 1 to 4 had fluidity even after being left for 6 days.
The paste had lost fluidity after only one day of standing.
That is, in the paste of Comparative Example 1, polyvinyl alcohol was adsorbed on the hydrogen storage alloy powder and separated into the hydrogen storage alloy and water, the viscosity decreased, and the hydrogen storage alloy precipitated at the bottom and flowed as the paste. Had lost sex.
【００３０】また、図１に示すように、実施例１〜４の
ペーストは、比較例１のペーストに比べて、経時に伴う
粘度低下が少なかった。つまり、本発明の実施例１〜４
のペーストは、保存中の粘度低下が少なく、長期保存が
可能であった。なお、比較例１のペーストは２日放置後
には水素吸蔵合金粉末が固化してしまって粘度の測定が
できなかったため、図１には６日放置後の粘度は示して
いない。Further, as shown in FIG. 1, the pastes of Examples 1 to 4 showed less decrease in viscosity over time than the paste of Comparative Example 1. That is, Examples 1-4 of the present invention
The paste of Example 1 showed a small decrease in viscosity during storage and was capable of long-term storage. The viscosity of the paste of Comparative Example 1 after standing for two days was not shown in FIG. 1 because the hydrogen-absorbing alloy powder was solidified and the viscosity could not be measured after standing for two days.
【００３１】そして、図２に示すように、実施例１〜４
の水素吸蔵電極は、比較例１の水素吸蔵電極に比べて、
重量のバラツキが少なかった。これは実施例１〜４のペ
ーストが比較例１のペーストより塗布機のタンク内での
分離が進行せず、より均一な状態を保っているという理
由によるものである。また、表２に示すように、実施例
１〜４の電池は、比較例１の電池と同等の放電容量を有
し、ペーストのバインダー組成を変更したことによる放
電容量の低下は認められなかった。なお、実施例３の水
素吸蔵電極と実施例４の水素吸蔵電極は、ほぼ同様の重
量分布を示したので、図２には重量分布を示す１本の曲
線に実施例３，４の文字を付している。Then, as shown in FIG.
Of the hydrogen storage electrode of Comparative Example 1
There was little variation in weight. This is because the pastes of Examples 1 to 4 did not progress in the tank of the coating machine compared to the paste of Comparative Example 1, and maintained a more uniform state. Further, as shown in Table 2, the batteries of Examples 1 to 4 had the same discharge capacity as the battery of Comparative Example 1, and no decrease in the discharge capacity due to the change in the binder composition of the paste was observed. . Since the hydrogen storage electrode of Example 3 and the hydrogen storage electrode of Example 4 showed almost the same weight distribution, FIG. 2 shows the curves of Examples 3 and 4 on one curve showing the weight distribution. It is attached.
【００３２】[0032]
【発明の効果】以上説明したように、本発明によれば、
水素吸蔵合金粉末を含有するペーストの保存中の粘度低
下を抑制し、ペーストの長期保存を可能にして、水素吸
蔵電極の生産性を向上させることができた。As described above, according to the present invention,
The decrease in viscosity during storage of the paste containing the hydrogen storage alloy powder was suppressed, the paste could be stored for a long time, and the productivity of the hydrogen storage electrode could be improved.
【００３３】また、本発明によれば、上記のようなペー
ストの粘度低下の抑制や水素吸蔵電極の生産性の向上を
放電容量の低下を招くことなく、達成することができ
た。Further, according to the present invention, it was possible to suppress the above-mentioned decrease in the viscosity of the paste and to improve the productivity of the hydrogen storage electrode without lowering the discharge capacity.
【図１】実施例１〜４のペーストおよび比較例１のペー
ストの粘度の経時変化を示す図である。FIG. 1 is a diagram showing the change over time in the viscosity of the pastes of Examples 1 to 4 and the paste of Comparative Example 1.
【図２】実施例１〜４の水素吸蔵電極および比較例１の
水素吸蔵電極の重量分布を示す図である。FIG. 2 is a diagram showing the weight distribution of the hydrogen storage electrodes of Examples 1 to 4 and the hydrogen storage electrode of Comparative Example 1.
Claims (5)
てなる水素吸蔵電極において、上記バインダーとしてポ
リビニルアルコールとポリビニルピロリドンとの混合物
を含有することを特徴とする水素吸蔵電極。1. A hydrogen storage electrode comprising a hydrogen storage alloy powder held by a binder, wherein the hydrogen storage electrode contains a mixture of polyvinyl alcohol and polyvinylpyrrolidone as the binder.
の分率が５〜２５重量％である請求項１記載の水素吸蔵
電極。2. The hydrogen storage electrode according to claim 1, wherein the fraction of polyvinylpyrrolidone in the total binder is 5 to 25% by weight.
００〜１００００である請求項１記載の水素吸蔵電極。3. The average degree of polymerization of polyvinyl alcohol is 1
The hydrogen storage electrode according to claim 1, wherein the number is from 00 to 10,000.
０００〜５００００である請求項１記載の水素吸蔵電
極。4. Polyvinylpyrrolidone having an average degree of polymerization of 1
The hydrogen storage electrode according to claim 1, wherein the number of the hydrogen storage electrodes is from 000 to 50,000.
蔵電極を負極に用いたことを特徴とするニッケル水素二
次電池。5. A nickel-metal hydride secondary battery using the hydrogen storage electrode according to claim 1, 2, 3, or 4 as a negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8208902A JPH1040916A (en) | 1996-07-19 | 1996-07-19 | Hydrogen absorbing electrode and nickel hydrogen secondary battery using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8208902A JPH1040916A (en) | 1996-07-19 | 1996-07-19 | Hydrogen absorbing electrode and nickel hydrogen secondary battery using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1040916A true JPH1040916A (en) | 1998-02-13 |
Family
ID=16564025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8208902A Withdrawn JPH1040916A (en) | 1996-07-19 | 1996-07-19 | Hydrogen absorbing electrode and nickel hydrogen secondary battery using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1040916A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100906250B1 (en) * | 2006-09-04 | 2009-07-07 | 주식회사 엘지화학 | Electrode Material Containing Mixture of Polyvinyl Alcohol of High Degree of Polymerization and Polyvinyl Pyrrolidone as Binder and Lithium Secondary Battery Employed with the Same |
-
1996
- 1996-07-19 JP JP8208902A patent/JPH1040916A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100906250B1 (en) * | 2006-09-04 | 2009-07-07 | 주식회사 엘지화학 | Electrode Material Containing Mixture of Polyvinyl Alcohol of High Degree of Polymerization and Polyvinyl Pyrrolidone as Binder and Lithium Secondary Battery Employed with the Same |
| JP2010503174A (en) * | 2006-09-04 | 2010-01-28 | エルジー・ケム・リミテッド | Electrode material containing a mixture of polyvinyl alcohol and polyvinyl pyrrolidone having a high degree of polymerization as a binder, and a lithium secondary battery using the same |
| US7846583B2 (en) | 2006-09-04 | 2010-12-07 | Lg Chem, Ltd. | Electrode material containing mixture of polyvinyl alcohol of high degree of polymerization and polyvinyl pyrrolidone as binder and lithium secondary battery employed with the same |
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| A300 | Withdrawal of application because of no request for examination |
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