JPH1021904A - Alkaline storage battery - Google Patents
Alkaline storage batteryInfo
- Publication number
- JPH1021904A JPH1021904A JP8192996A JP19299696A JPH1021904A JP H1021904 A JPH1021904 A JP H1021904A JP 8192996 A JP8192996 A JP 8192996A JP 19299696 A JP19299696 A JP 19299696A JP H1021904 A JPH1021904 A JP H1021904A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- electrode
- yttrium
- nickel
- active material
- 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
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ニッケル極を正極
とするアルカリ蓄電池に係わり、詳しくは、正極の活物
質利用率が高いアルカリ蓄電池を提供することを目的と
した、アルカリ電解液の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alkaline storage battery having a nickel electrode as a positive electrode, and more particularly to an improvement in an alkaline electrolyte for the purpose of providing an alkaline storage battery having a high positive electrode active material utilization rate. .
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】正極活
物質に水酸化ニッケルを用いるアルカリ蓄電池では、充
電により生成するオキシ水酸化ニッケルの導電性は良好
であるが、放電生成物である水酸化ニッケルの導電性が
悪い。そのため、基板の集電能力が悪くなり、活物質利
用率が低下する。この傾向は、非焼結式のニッケル極に
おいて、顕著である。2. Description of the Related Art In an alkaline storage battery using nickel hydroxide as a positive electrode active material, the conductivity of nickel oxyhydroxide generated by charging is good, but the hydroxide, which is a discharge product, has a high conductivity. Poor conductivity of nickel. Therefore, the current collecting ability of the substrate is deteriorated, and the utilization rate of the active material is reduced. This tendency is remarkable in the non-sintered nickel electrode.
【０００３】そこで、活物質利用率の高いニッケル極を
得るべく、ニッケル極にイットリウム化合物を添加して
正極側の酸素過電圧を高めることが特開平５−２８９９
２号公報に提案されている。このニッケル極は、いわゆ
る非焼結式である。In order to obtain a nickel electrode having a high active material utilization rate, it has been proposed to increase the oxygen overvoltage on the positive electrode side by adding an yttrium compound to the nickel electrode.
No. 2 proposes this. This nickel electrode is a so-called non-sintered type.
【０００４】しかしながら、本発明者らが試験した結
果、ニッケル極にイットリウム化合物を添加する上記の
方法では、活物質利用率、特に高温で充電した場合の活
物質利用率が充分でないことが分かった。However, as a result of a test conducted by the present inventors, it has been found that the above-mentioned method of adding an yttrium compound to a nickel electrode does not have a sufficient utilization rate of an active material, particularly when the battery is charged at a high temperature. .
【０００５】したがって、本発明は、正極の活物質利用
率、特に高温で充電した場合の正極の活物質利用率が、
従来のものに比べて高いアルカリ蓄電池を提供すること
を目的とする。[0005] Therefore, the present invention provides a positive electrode active material utilization rate, particularly when the positive electrode is charged at a high temperature,
An object of the present invention is to provide an alkaline storage battery that is higher than a conventional one.
【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
の本発明に係るアルカリ蓄電池（本発明電池）は、正極
としてのニッケル極と、負極と、アルカリ電解液とを備
えるアルカリ蓄電池において、前記アルカリ電解液がイ
ットリウムを０．５〜１０重量ｐｐｍ含有していること
を特徴とする。According to the present invention, there is provided an alkaline storage battery (battery according to the present invention) comprising: a nickel electrode as a positive electrode; a negative electrode; and an alkaline electrolyte. The alkaline electrolyte contains 0.5 to 10 ppm by weight of yttrium.
【０００７】本発明に於けるアルカリ電解液のイットリ
ウム含有量が、０．５〜１０重量ｐｐｍに規制されるの
は、イットリウム含有量がこの範囲を外れると、正極の
活物質利用率、特に高温充電時の正極の活物質利用率が
低下するからである。The reason why the yttrium content of the alkaline electrolyte in the present invention is restricted to 0.5 to 10 ppm by weight is that when the yttrium content is out of this range, the active material utilization of the positive electrode, especially high temperature This is because the active material utilization rate of the positive electrode during charging decreases.
【０００８】本発明は、ニッケル極を正極とするアルカ
リ蓄電池、例えば負極が水素吸蔵合金電極であるニッケ
ル−水素アルカリ蓄電池、負極がカドミウム電極である
ニッケル−カドミウムアルカリ蓄電池、負極が亜鉛電極
であるニッケル−亜鉛アルカリ蓄電池などに適用可能で
ある。The present invention relates to an alkaline storage battery having a nickel electrode as a positive electrode, for example, a nickel-hydrogen alkaline storage battery in which the negative electrode is a hydrogen storage alloy electrode, a nickel-cadmium alkaline storage battery in which the negative electrode is a cadmium electrode, and a nickel electrode in which the negative electrode is a zinc electrode. -Applicable to zinc alkaline storage batteries and the like.
【０００９】本発明電池においては、アルカリ電解液が
イットリウムを所定量含有しているので、正極の活物質
利用率が高い。この理由は定かでないが、アルカリ電解
液中のイットリウムが水酸化ニッケル粒子の細孔内に拡
散することにより、充電時の正極の酸素過電圧が上昇し
て酸素が発生しにくくなり、その結果、水酸化ニッケル
のオキシ水酸化ニッケルへの充電が効率良く行われるよ
うになるためと考えられる。正極にイットリウム化合物
を添加する特開平５−２８９９２号公報に開示されてい
る方法では、後述する実施例に示すように、本発明電池
の如き優れた特性を有するアルカリ蓄電池は得られな
い。In the battery of the present invention, since the alkaline electrolyte contains a predetermined amount of yttrium, the active material utilization of the positive electrode is high. The reason for this is not clear, but the diffusion of yttrium in the alkaline electrolyte into the pores of the nickel hydroxide particles increases the oxygen overvoltage of the positive electrode during charging, making it difficult for oxygen to be generated. It is considered that the charging of the nickel oxide to the nickel oxyhydroxide is efficiently performed. According to the method disclosed in JP-A-5-28992 in which an yttrium compound is added to the positive electrode, an alkaline storage battery having excellent characteristics as in the battery of the present invention cannot be obtained, as shown in Examples described later.
【００１０】[0010]
【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. However, the present invention is not limited to the following examples, and the present invention may be practiced by appropriately changing the gist of the invention. Is possible.
【００１１】（実施例１） 〔ニッケル極の作製〕水酸化ニッケル１００重量部、金
属コバルト７重量部、水酸化コバルト５重量部、及び、
結着剤としての１重量％メチルセルロース水溶液２０重
量部を混練してペーストを調製し、このペーストをニッ
ケルめっきした発泡メタル（多孔度９５％；平均孔径２
００μｍ）からなる多孔性の基板に充填し、乾燥し、加
圧成形して、非焼結式のニッケル極を作製した。(Example 1) [Preparation of nickel electrode] 100 parts by weight of nickel hydroxide, 7 parts by weight of metallic cobalt, 5 parts by weight of cobalt hydroxide, and
A paste was prepared by kneading 20 parts by weight of a 1% by weight aqueous solution of methylcellulose as a binder, and the paste was nickel-plated into a foamed metal (porosity: 95%; average pore diameter: 2).
A non-sintered nickel electrode was prepared by filling a porous substrate having a thickness of 00 μm), drying and pressing.
【００１２】〔アルカリ電解液の調製〕比重１．３０の
水酸化カリウム水溶液１リットルにＬｉＯＨ・Ｈ2 Ｏを
４０ｇ、及び、三酸化二イットリウム（Ｙ2 Ｏ3 ）を
８．５ｍｇ溶かしてアルカリ電解液を調製した。このア
ルカリ電解液のイットリウム含有量は５重量ｐｐｍであ
る。[0012] The LiOH · H 2 O in aqueous potassium hydroxide solution 1 l [alkaline electrolyte prepared in] specific gravity 1.30 40 g, and the alkaline electrolyte by dissolving 8.5mg trioxide yttrium oxide (Y 2 O 3) A liquid was prepared. The yttrium content of this alkaline electrolyte is 5 ppm by weight.
【００１３】〔アルカリ蓄電池の作製〕上記の非焼結式
のニッケル極（正極）、この正極よりも電気化学的容量
が大きい従来公知のペースト式カドミウム極（負極）、
上記のアルカリ電解液、ポリアミド不織布（セパレー
タ）、金属製の電池缶、金属製の電池蓋などを用いて、
ＡＡサイズのアルカリ蓄電池Ａ１（電池容量：約１００
０ｍＡｈ）を作製した。[Preparation of Alkaline Storage Battery] The above-mentioned non-sintered nickel electrode (positive electrode), a conventionally known paste-type cadmium electrode (negative electrode) having a larger electrochemical capacity than this positive electrode,
Using the above alkaline electrolyte, polyamide nonwoven fabric (separator), metal battery can, metal battery lid, etc.
AA size alkaline storage battery A1 (battery capacity: about 100
0 mAh).
【００１４】（比較例１） 〔ニッケル極の作製〕水酸化ニッケル１００重量部、金
属コバルト７重量部、水酸化コバルト５重量部、三酸化
二イットリウム３重量部、及び、結着剤としての１重量
％メチルセルロース水溶液２０重量部を混練してペース
トを調製し、このペーストをニッケルめっきした発泡メ
タル（多孔度９５％；平均孔径２００μｍ）からなる多
孔性の基板に充填し、乾燥し、加圧成形して、非焼結式
のニッケル極を作製した。Comparative Example 1 [Preparation of Nickel Electrode] 100 parts by weight of nickel hydroxide, 7 parts by weight of metallic cobalt, 5 parts by weight of cobalt hydroxide, 3 parts by weight of yttrium trioxide, and 1 part as a binder A paste is prepared by kneading 20 parts by weight of an aqueous solution of methyl cellulose by weight, and the paste is filled in a porous substrate made of nickel-plated foamed metal (porosity: 95%; average pore diameter: 200 μm), dried, and pressed. Thus, a non-sintered nickel electrode was manufactured.
【００１５】〔アルカリ電解液の調製〕比重１．３０の
水酸化カリウム水溶液１リットルにＬｉＯＨ・Ｈ2 Ｏを
４０ｇ溶かしてアルカリ電解液を調製した。[Preparation of Alkaline Electrolyte] An alkali electrolyte was prepared by dissolving 40 g of LiOH.H 2 O in 1 liter of an aqueous potassium hydroxide solution having a specific gravity of 1.30.
【００１６】〔アルカリ蓄電池の作製〕上記の非焼結式
のニッケル極及びアルカリ電解液を使用したこと以外は
実施例１と同様にして、比較電池Ｂ１を作製した。[Preparation of Alkaline Storage Battery] A comparative battery B1 was prepared in the same manner as in Example 1 except that the above-mentioned non-sintered nickel electrode and alkaline electrolyte were used.
【００１７】（実施例２） 〔ニッケル極の作製〕水酸化ニッケル９０重量部、水酸
化コバルト１０重量部、及び、結着剤としての１重量％
メチルセルロース水溶液２０重量部を混練してペースト
を調製し、このペーストをニッケルめっきした発泡メタ
ル（多孔度９５％；平均孔径２００μｍ）からなる多孔
性の基板に充填し、乾燥し、加圧成形して、非焼結式の
ニッケル極を作製した。(Example 2) [Preparation of nickel electrode] 90 parts by weight of nickel hydroxide, 10 parts by weight of cobalt hydroxide, and 1% by weight as a binder
A paste is prepared by kneading 20 parts by weight of a methylcellulose aqueous solution, and the paste is filled in a porous substrate made of nickel-plated foamed metal (porosity: 95%; average pore diameter: 200 μm), dried, and pressed. A non-sintered nickel electrode was manufactured.
【００１８】〔アルカリ電解液の調製〕比重１．２０の
水酸化カリウム水溶液１リットルに三酸化二イットリウ
ムを７．６ｍｇ溶かしてアルカリ電解液を調製した。こ
のアルカリ電解液のイットリウム含有量は５重量ｐｐｍ
である。[Preparation of alkaline electrolyte] 7.6 mg of yttrium trioxide was dissolved in 1 liter of an aqueous potassium hydroxide solution having a specific gravity of 1.20 to prepare an alkaline electrolyte. The yttrium content of this alkaline electrolyte is 5 ppm by weight.
It is.
【００１９】〔アルカリ蓄電池の作製〕上記の非焼結式
のニッケル極及びアルカリ電解液を使用したこと以外は
実施例１と同様にして、本発明電池Ａ２を作製した。[Preparation of Alkaline Storage Battery] A battery A2 of the present invention was prepared in the same manner as in Example 1 except that the above-mentioned non-sintered nickel electrode and alkaline electrolyte were used.
【００２０】（比較例２）アルカリ電解液の調製におい
て、三酸化二イットリウムを配合しなかったこと以外は
実施例２と同様にして、比較電池Ｂ２を作製した。Comparative Example 2 A comparative battery B2 was prepared in the same manner as in Example 2, except that yttrium trioxide was not used in the preparation of the alkaline electrolyte.
【００２１】〈各電池の正極の活物質利用率〉各電池に
ついて、２５°Ｃにて０．１Ｃで１６０％充電した後、
２５°Ｃにて１Ｃで１．０Ｖまで放電する充放電を９サ
イクル行った。その後、２５°Ｃ、４５°Ｃ又は６０°
Ｃにて０．１Ｃで１６０％充電した後、２５°Ｃにて１
Ｃで１．０Ｖまで放電して、各電池の正極の１０サイク
ル目の活物質利用率を求めた。活物質利用率は、下式に
基づき算出した。<Active Material Utilization Rate of Positive Electrode of Each Battery> Each battery was charged at 25 ° C. and 0.1% at 160%, and then charged.
Nine cycles of charging / discharging at 25 ° C. at 1 C to 1.0 V were performed. Then 25 ° C, 45 ° C or 60 °
After charging 160% at 0.1C at 25 ° C, 1% at 25 ° C
The battery was discharged to 1.0 V at C, and the active material utilization at the 10th cycle of the positive electrode of each battery was determined. The active material utilization was calculated based on the following equation.
【００２２】活物質利用率（％）＝｛１０サイクル目の
放電容量（ｍＡｈ）／〔水酸化ニッケル量（ｇ）×２８
８（ｍＡｈ／ｇ）〕｝×１００Active material utilization rate (%) = ｛discharge capacity at the 10th cycle (mAh) / [amount of nickel hydroxide (g) × 28]
8 (mAh / g)]｝ 100
【００２３】結果を表１に示す。但し、表１の上欄中の
活物質利用率は、本発明電池Ａ１の正極の１０サイクル
目の活物質利用率を１００としたときの指数で示したも
のであり、また表１の下欄中の活物質利用率は、本発明
電池Ａ２の正極の１０サイクル目の活物質利用率を１０
０としたときの指数で示したものである。The results are shown in Table 1. However, the active material utilization in the upper column of Table 1 is an index when the active material utilization in the 10th cycle of the positive electrode of the battery A1 of the present invention is 100, and the lower column of Table 1 is also shown. The active material utilization in the battery A2 of the present invention is 10% of the active material utilization in the positive electrode of the battery A2 of the present invention.
It is indicated by an index when it is set to 0.
【００２４】[0024]
【表１】 [Table 1]
【００２５】表１に示すように、本発明電池Ａ１は、比
較電池Ｂ１に比べて、試験した全ての充電温度に関して
正極の１０サイクル目の活物質利用率が高い。この事実
から、正極の活物質利用率を高めるためには、ニッケル
極にイットリウムを添加するよりも、アルカリ電解液に
イットリウムを含有せしめる方が有効であることが分か
る。As shown in Table 1, the battery A1 of the present invention has a higher positive electrode utilization rate at the 10th cycle of the positive electrode at all the charging temperatures tested than the comparative battery B1. From this fact, it can be seen that it is more effective to add yttrium to the alkaline electrolyte than to add yttrium to the nickel electrode in order to increase the active material utilization of the positive electrode.
【００２６】また、表１に示すように、本発明電池Ａ２
は、比較電池Ｂ２に比べて、試験した全ての充電温度に
関して正極の１０サイクル目の活物質利用率が高い。こ
の事実から、アルカリ電解液にイットリウムを含有せし
めることにより、正極の活物質利用率が向上することが
分かる。As shown in Table 1, the battery A2 of the present invention
Indicates that the active material utilization rate of the positive electrode at the tenth cycle is higher at all the charging temperatures tested, as compared with the comparative battery B2. From this fact, it can be seen that the incorporation of yttrium in the alkaline electrolyte improves the active material utilization of the positive electrode.
【００２７】〈アルカリ電解液のイットリウム含有量と
活物質利用率の関係〉比重１．３０の水酸化カリウム水
溶液１リットルにＬｉＯＨ・Ｈ2 Ｏを４０ｇ、及び、三
酸化二イットリウムを０．２ｍｇ、０．４ｍｇ、０．９
ｍｇ、１．７ｍｇ、３．４ｍｇ、１２．８ｍｇ、１７．
０ｍｇ又は２０．４ｍｇ溶かしてアルカリ電解液を調製
した。これらのアルカリ電解液のイットリウム含有量
は、順に０．１重量ｐｐｍ、０．２５重量ｐｐｍ、０．
５重量ｐｐｍ、１重量ｐｐｍ、２重量ｐｐｍ、７．５重
量ｐｐｍ、１０重量ｐｐｍ、１２重量ｐｐｍである。こ
れらのアルカリ電解液を、それぞれ使用したこと以外は
実施例１と同様にして、順に比較電池Ｂ３、Ｂ４、本発
明電池Ａ３〜Ａ７、比較電池Ｂ５を作製し、先と同様に
して、各電池の充電温度２５°Ｃ、４５°Ｃ及び６０°
Ｃに於ける正極の１０サイクル目の活物質利用率を求め
た。結果を表２に示す。表２には、本発明電池Ａ１（ア
ルカリ電解液のイットリウム含有量：５重量ｐｐｍ）の
充電温度が２５°Ｃ、４５°Ｃ及び６０°Ｃに於ける正
極の１０サイクル目の活物質利用率も示してあり、表２
中の活物質利用率は、本発明電池Ａ１の正極の活物質利
用率を１００とした指数で示したものである。<Relationship between Yttrium Content of Alkaline Electrolyte and Utilization of Active Material> 40 g of LiOH.H 2 O and 0.2 mg of yttrium trioxide were added to 1 liter of an aqueous potassium hydroxide solution having a specific gravity of 1.30. 0.4 mg, 0.9
mg, 1.7 mg, 3.4 mg, 12.8 mg, 17.
0 mg or 20.4 mg was dissolved to prepare an alkaline electrolyte. The yttrium content of these alkaline electrolytes was 0.1 ppm by weight, 0.25 ppm by weight, 0.1 ppm by weight, respectively.
They are 5 ppm, 1 ppm, 2 ppm, 7.5 ppm, 10 ppm, and 12 ppm by weight. Comparative batteries B3 and B4, inventive batteries A3 to A7, and comparative battery B5 were prepared in the same manner as in Example 1 except that each of these alkaline electrolytes was used. Charge temperature of 25 ° C, 45 ° C and 60 °
The active material utilization rate of the positive electrode at the tenth cycle in C was determined. Table 2 shows the results. Table 2 shows the active material utilization of the positive electrode at the 10th cycle when the charging temperature of the battery A1 of the present invention (yttrium content of the alkaline electrolyte: 5 ppm by weight) was 25 ° C, 45 ° C and 60 ° C. Are also shown in Table 2
The active material utilization in the table is indicated by an index with the active material utilization of the positive electrode of the battery A1 of the present invention being 100.
【００２８】[0028]
【表２】 [Table 2]
【００２９】表２より、幅広い充電温度領域において正
極の活物質利用率が高いアルカリ蓄電池を得るために
は、アルカリ電解液のイットリウム含有量を０．５重量
ｐｐｍ〜１０重量ｐｐｍとする必要があることが分か
る。From Table 2, it can be seen that in order to obtain an alkaline storage battery having a high utilization rate of the active material of the positive electrode in a wide charging temperature range, the yttrium content of the alkaline electrolyte needs to be 0.5 to 10 ppm by weight. You can see that.
【００３０】上記の実施例では、ニッケル極の活物質と
して水酸化ニッケルを使用したが、水酸化ニッケルに、
コバルト、亜鉛、カドミウム、カルシウム、マンガン、
マグネシウム、ビスマス、アルミニウム及びイットリウ
ムから選ばれた少なくとも１種の元素が固溶した固溶体
を用いてもよい。水酸化ニッケルにこれらの元素を固溶
させることにより充放電時の水酸化ニッケルの膨化を抑
制することができる。In the above embodiment, nickel hydroxide was used as the active material of the nickel electrode.
Cobalt, zinc, cadmium, calcium, manganese,
A solid solution in which at least one element selected from magnesium, bismuth, aluminum and yttrium is dissolved may be used. By dissolving these elements in nickel hydroxide, swelling of nickel hydroxide during charge and discharge can be suppressed.
【００３１】また、上記の実施例では、イットリウム原
料として三酸化二イットリウムを使用したが、炭酸イッ
トリウム、フッ化イットリウムなどを使用した場合に
も、上記と同様の優れた効果が得られることを確認し
た。In the above example, yttrium trioxide was used as the yttrium raw material. However, it was confirmed that the same excellent effects as described above can be obtained when yttrium carbonate, yttrium fluoride, or the like is used. did.
【００３２】さらに、上記の実施例では、非焼結式のニ
ッケル極を使用したが、公知の焼結式ニッケル極を使用
した場合にも、上記と同様の効果が得られることを確認
した。Further, in the above embodiment, a non-sintered nickel electrode was used, but it was confirmed that the same effect as described above could be obtained when a known sintered nickel electrode was used.
【００３３】[0033]
【発明の効果】本発明電池は、アルカリ電解液がイット
リウムを所定量含有しているので、幅広い充電温度領域
において正極の活物質利用率が高い。According to the battery of the present invention, since the alkaline electrolyte contains a predetermined amount of yttrium, the active material utilization of the positive electrode is high in a wide charging temperature range.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 矢野 睦 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 野上 光造 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 米津 育郎 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 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 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mutsumi Yano 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kozo Nogami 2-5-5 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Ikuro Yonezu 2-5-5 Keihanhondori 2-chome, Moriguchi-shi, Osaka Prefecture (72) Inventor Koji Nishio 2 Keihanhondori, Moriguchi-shi, Osaka 5-5, Sanyo Electric Co., Ltd.
Claims (2)
カリ電解液とを備えるアルカリ蓄電池において、前記ア
ルカリ電解液がイットリウムを０．５〜１０重量ｐｐｍ
含有していることを特徴とするアルカリ蓄電池。1. An alkaline storage battery comprising a nickel electrode as a positive electrode, a negative electrode, and an alkaline electrolyte, wherein the alkaline electrolyte contains 0.5 to 10 ppm by weight of yttrium.
An alkaline storage battery characterized by containing.
ム電極又は亜鉛電極である請求項１記載のアルカリ蓄電
池。2. The alkaline storage battery according to claim 1, wherein the negative electrode is a hydrogen storage alloy electrode, a cadmium electrode, or a zinc electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19299696A JP3263603B2 (en) | 1996-07-03 | 1996-07-03 | Alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19299696A JP3263603B2 (en) | 1996-07-03 | 1996-07-03 | Alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1021904A true JPH1021904A (en) | 1998-01-23 |
| JP3263603B2 JP3263603B2 (en) | 2002-03-04 |
Family
ID=16300491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19299696A Expired - Fee Related JP3263603B2 (en) | 1996-07-03 | 1996-07-03 | Alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3263603B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000021151A1 (en) * | 1998-10-08 | 2000-04-13 | Matsushita Electric Industrial Co., Ltd. | Alkaline battery |
| JP2006073463A (en) * | 2004-09-06 | 2006-03-16 | Toyota Motor Corp | Positive electrode for alkali storage battery and alkali storage battery |
| US10221304B2 (en) | 2014-10-02 | 2019-03-05 | Dow Global Technologies Llc | High frequency weldable ethylene-based polymer compositions with good flame retardancy |
-
1996
- 1996-07-03 JP JP19299696A patent/JP3263603B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000021151A1 (en) * | 1998-10-08 | 2000-04-13 | Matsushita Electric Industrial Co., Ltd. | Alkaline battery |
| US6566009B1 (en) | 1998-10-08 | 2003-05-20 | Matsushita Electric Industrial Co., Ltd. | Alkaline battery |
| KR100404625B1 (en) * | 1998-10-08 | 2003-11-07 | 마쯔시다덴기산교 가부시키가이샤 | Alkaline battery |
| JP2006073463A (en) * | 2004-09-06 | 2006-03-16 | Toyota Motor Corp | Positive electrode for alkali storage battery and alkali storage battery |
| US10221304B2 (en) | 2014-10-02 | 2019-03-05 | Dow Global Technologies Llc | High frequency weldable ethylene-based polymer compositions with good flame retardancy |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3263603B2 (en) | 2002-03-04 |
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