JPH03280357A - Electrode of hydrogen storage alloy for alkaline storage battery - Google Patents
Electrode of hydrogen storage alloy for alkaline storage batteryInfo
- Publication number
- JPH03280357A JPH03280357A JP2080116A JP8011690A JPH03280357A JP H03280357 A JPH03280357 A JP H03280357A JP 2080116 A JP2080116 A JP 2080116A JP 8011690 A JP8011690 A JP 8011690A JP H03280357 A JPH03280357 A JP H03280357A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- metal phase
- hydrogen storage
- alloy
- storage alloy
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 40
- 239000000956 alloy Substances 0.000 title claims abstract description 40
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 26
- 239000001257 hydrogen Substances 0.000 title claims abstract description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 229910052718 tin Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract 2
- 229910000765 intermetallic Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims 3
- 238000007599 discharging Methods 0.000 abstract description 14
- 229910052759 nickel Inorganic materials 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 229910052715 tantalum Inorganic materials 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000008151 electrolyte solution Substances 0.000 abstract description 2
- 229910052758 niobium Inorganic materials 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- 229910052726 zirconium Inorganic materials 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052987 metal hydride Inorganic materials 0.000 description 5
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 150000001639 boron compounds Chemical class 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001233887 Ania Species 0.000 description 1
- 229910004247 CaCu Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明はアルカリ蓄電池の１１極として用いられる水素
吸蔵合金電極に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a hydrogen storage alloy electrode used as the 11 poles of an alkaline storage battery.
（ロ）従来の技術
従本から使用されている二次電池としては、ニッケルー
カドミウム電池の如きアルカリＭ １ｔｉ池、あるいは
ＩｉＩ 者電池などが挙げられるが、近イ１゛これらの
ｔｋ池よりも軽量、高等３ｉｔで高エネルギー密度とな
るｉ＋）能性のある水素吸蔵合金電極を備えた金属酸化
物−水素アルカリ蓄電池が注目を浴びている。このＭ
’＝ｊ１池に用いられる水素吸蔵合金としては、例えば
特公昭５９−４９Ｇ７１号公報に示されているように、
■、ａＮｉ、や、その改良である１、ａＮｉ、Ｃｏ、Ｉ
−ａＮｉａ、ｍＦｃｅ、などの水素吸蔵合金が用いられ
、またＬａ、 Ｃｃ、 Ｉ’ｒ、 Ｎｄ、Ｓｍなどのラ
ンタン系の混合物であるミツシュメタル（Ｍ ＋ｓ ）
を用いた水素１１＆蔵合金が開発されている（例えば特
開昭６２−２０２４５号公報参照）。(b) Conventional technology Secondary batteries that have been used include alkaline M1ti batteries, such as nickel-cadmium batteries, and Illi batteries; Metal oxide-hydrogen alkaline storage batteries equipped with hydrogen-absorbing alloy electrodes that are lightweight, high-quality 3IT, and have high energy density are attracting attention. This M
'=j1 Hydrogen storage alloys used in ponds include, for example, as shown in Japanese Patent Publication No. 59-49G71,
■, aNi, and its improvements 1, aNi, Co, I
- Hydrogen storage alloys such as aNia, mFce, etc. are used, and Mitsushmetal (M+s) is a mixture of lanthanum-based materials such as La, Cc, I'r, Nd, and Sm.
A hydrogen 11 & chloride alloy using hydrogen has been developed (for example, see Japanese Patent Application Laid-Open No. 62-20245).
この水素吸蔵合金を用いた水素極は、水素吸蔵合金−１
−で水素極の反応を進行させ充電時に生成する水素を水
素吸蔵合金中に吸蔵させてしまうものである。そして特
に水Ｊ：吸蔵１．ｔが大−きく、水素極の電極触媒能力
に優れた水素吸蔵合金を負極材料として用いると、高エ
ネルギー密度の電極を構成することができる。しかも充
放電電位がカドミウム電極と類似していることからカド
ミウムを負極とするニッケルーカドミウム電池と完全な
！ｉ換性を有している。A hydrogen electrode using this hydrogen storage alloy is hydrogen storage alloy-1
- The reaction at the hydrogen electrode proceeds and the hydrogen generated during charging is stored in the hydrogen storage alloy. And especially water J: occlusion 1. When a hydrogen storage alloy with a large t and excellent electrode catalytic ability is used as a negative electrode material, an electrode with high energy density can be constructed. Furthermore, since the charging and discharging potential is similar to that of a cadmium electrode, it is completely compatible with a nickel-cadmium battery that uses cadmium as the negative electrode! It has i exchangeability.
この水素吸蔵合金を負極に用いた電池はニッケルー水素
電池と呼ばれているが、例えば同一体積の密閑型ニッケ
ルー水素電池と、ニッケルーカドミウム電池とを比較す
ると、ニッケルー水素電池はニッケルーカドミウム電池
の約１．５倍のエネルギー密度を有している。Batteries using this hydrogen storage alloy as the negative electrode are called nickel-metal hydride batteries. For example, if you compare a sealed nickel-metal hydride battery with the same volume as a nickel-cadmium battery, a nickel-metal hydride battery is a nickel-cadmium battery. It has an energy density approximately 1.5 times that of
このように高エネルギー密度の観点から、電池が通常用
いられる常温域で水素吸蔵合金槍の多い水素吸蔵合金に
開発の重きが置かれていたが、現在までに開発された合
金を用いた場合、初ル１の充放電効率が低く、充放電の
サイクル初Ｎｌから充分な電気化学容量が得られないと
いう問題があった。即ち、水素吸蔵合金電極は初期から
充電は容量であるが、放電の場合は合金内から合金表向
に水素が拡散するプロセスが律速段階となり、合金内に
水素が残留したまま転極してしまう現象が見られ、放−
に効率の点で問題があった。In this way, from the perspective of high energy density, emphasis has been placed on the development of hydrogen-absorbing alloys with a large number of hydrogen-absorbing alloys in the room temperature range where batteries are normally used, but when using the alloys developed to date, There was a problem in that the charging/discharging efficiency of the initial charge/discharge cycle 1 was low, and sufficient electrochemical capacity could not be obtained from the initial Nl of the charging/discharging cycle. In other words, a hydrogen-absorbing alloy electrode has a charging capacity from the beginning, but when discharging, the rate-determining process is the diffusion of hydrogen from within the alloy to the surface of the alloy, resulting in polarity reversal with hydrogen remaining within the alloy. The phenomenon is observed and the emission
There were problems with efficiency.
（ハ）発明が解決しようとする課題
本発明はこのような問題点に鑑みて為されたものであっ
て、初期の充放電効率とサイクル性能に優れた二次電池
、特にニッケルー水素二次電池に用いられる水素吸蔵合
金電極を提供するものである。(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned problems, and provides a secondary battery, particularly a nickel-metal hydride secondary battery, with excellent initial charging/discharging efficiency and cycle performance. The present invention provides a hydrogen storage alloy electrode used for.
（ニ）課題を解決するための１段 本発明は、アルカリＭ電池用水素吸蔵合金を。(d) The first step to solving the problem The present invention provides a hydrogen storage alloy for alkaline M batteries.
組成式Ｒｅ−Ｍ（ただし、Ｒｃは希！二類元素、アルカ
リ１−類元案の一秤以上、ＭはＮｉ、Ｃｏ、Ｍｎ、Ａ１
、Ｃｒ％Ｆｃ、 Ｃｕ、 Ｓｎ、 Ｓｂ、 Ｍｏ、■、
Ｎｂ。Compositional formula Re-M (where Rc is a rare! 2nd class element, more than one weight of alkali 1st class element, M is Ni, Co, Mn, A1
, Cr%Fc, Cu, Sn, Sb, Mo, ■,
Nb.
Ｔａ、 Ｚｎ、Ｚｒ、Ｔｉのうちから選ばれた一秤以１
、）で表される王たる金属相と、少くともホウ素を含む
従たる金属相との複数の金り間化合物相によって構成さ
せている。One weight or more selected from Ta, Zn, Zr, Ti
, ) and a plurality of intermetallic compound phases including a primary metal phase and a secondary metal phase containing at least boron.
（ホ）作用
電極として用いる水素吸蔵合金を、組成式Ｒｃ−Ｍで表
される主たる金属相とホウ素を含む従たる金属相との複
数の金属間化合物相によって構成させている。従って主
たる金属相聞に従たる金属相が分散し、この従たる金属
相を有する水素吸蔵合金を電極材料として用いた場合、
ｌサイクル１１の充放電で従たる金属相と主たる金属相
との界面からクラックが生じ、そのクラックに電解液が
浸透することによって電極の反応面積が増大し、結果的
に二次電池のサイクル初期の充放電効率が改みされる。(E) The hydrogen storage alloy used as the working electrode is composed of a plurality of intermetallic compound phases including a main metal phase represented by the composition formula Rc-M and a secondary metal phase containing boron. Therefore, the secondary metal phase is dispersed between the main metal phase, and when a hydrogen storage alloy having this secondary metal phase is used as an electrode material,
During charging and discharging in cycle 11, cracks occur at the interface between the secondary metal phase and the main metal phase, and as the electrolyte penetrates into the cracks, the reaction area of the electrode increases, and as a result, the initial cycle of the secondary battery The charging and discharging efficiency will be improved.
（へ）実施例
−・般に市販されている原料を秤量し、高周波誘導炉を
用いて「第１表」に示す７１ＩＩＩ類の合金を作成した
。尚、融点の高い元素については予めＮ１に固溶させて
合金を作成した。合金は機械的に粉砕し、ｉ−均粒径５
０μｍの粉本とした後、結着剤としてポリテトラフルオ
ロエチレン粉末ｌＯ％を混合し、ペースト状とした。次
にこのペーストをニッケルメツシュで包み込んでｌ ｉ
ｏｎ／ ｃｔａ”の圧力で加圧成型し、水Ｊ：吸蔵合金
電極を得た。尚、ここで−に極１
個当りに含有される合金は
１．０ｇで
ある。(F) Example - Generally commercially available raw materials were weighed, and alloys of type 71III shown in "Table 1" were prepared using a high frequency induction furnace. Note that elements with high melting points were dissolved in N1 in advance to form alloys. The alloy was mechanically ground to an i-average particle size of 5
After making it into a powder of 0 μm, 10% of polytetrafluoroethylene powder was mixed as a binder to make a paste. Next, wrap this paste in nickel mesh and
On/cta'' pressure was applied to obtain a water storage alloy electrode.The amount of alloy contained per electrode was 1.0 g.
第１表
ころ、今令Ｇは金属間化合物相であるＣ ａＣｕｓｐ！
：！の＋１ｔ−・相ＨＩＩ造であったのに対し、合金Ａ
−Ｆは、１：、たる金属相であるＣ ａＣｕ、相の他
に、ホウ素化合物に帰属されると思われる解析ピークが
検出された。即ち、Δ〜■？の合金は、主たる金属相で
あるＣ ａＣＬｌｓ型金属相と、従たる金属相であるホ
ウ素化合物とからなる複合合金であることが分かつた。Around Table 1, G is an intermetallic compound phase, CaCusp!
:! It was +1t- phase HII structure, whereas alloy A
-F is 1: In addition to the CaCu phase, which is a barrel metal phase, an analysis peak that is thought to be attributed to a boron compound was detected. That is, Δ~■? The alloy was found to be a composite alloy consisting of a CaCLls-type metal phase as a main metal phase and a boron compound as a secondary metal phase.
「第１表」に示した合金Ａ−Ｇを用いて形成した電極を
、電極容量が１００１００Ｏの正極と組み合わせ、：（
０ｗ１％のＫ Ｏ１１を用いてニッケルー水素電池を作
製し、初ル１の充放電効率を測定した。測定条件は充電
電流５０ｏ＋Ａ／ｇで４時１１１１充電した後、放電’
を流１５０ｍＡ／ｇで電池電圧が１，０■に達するまで
放電するものとした。「第２表」にこれらの電池の放電
界１１ｔを示す。An electrode formed using alloys A-G shown in "Table 1" was combined with a positive electrode having an electrode capacity of 100100O, :(
A nickel-metal hydride battery was fabricated using 0w1% KO11, and the initial charging and discharging efficiency was measured. The measurement conditions were a charging current of 50o+A/g, charging at 4:11, then discharging.
The battery was discharged at a current of 150 mA/g until the battery voltage reached 1.0 . "Table 2" shows the discharge field 11t of these batteries.
第２表
た電池の放電界ちｔは、比較合金Ｇを用いた電池に比べ
て放電容燵がｌ、（ｉ措置１．増にしており、組ガて１
６後の初期状態から充放電効率が良ｋＴであることが分
かる。The discharge field of the battery shown in Table 2 shows that the discharge capacity is increased by 1. compared to the battery using comparative alloy G.
It can be seen from the initial state after 6 days that the charging/discharging efficiency is good kT.
１゜記の合金を用いたｔｔ極を充放電電流値２００ｍＡ
／ｇで！ 、 ５１１．￥間充電すると共に、放電は電
池型１１′が１．Ｏｖに達するまで行うという条件で充
放１にサイクル試験を行った。第１図にその時のサイク
ル数と放Ｘ１１容ＩＩｔとの関係を示す。本発明に係る
電極を用いた電池Ａ −１”は、充放電サイクル経過に
伴い放−を容１１ｔが低下するものの、比較電池Ｃに比
べてその低−Ｆの度合いはずへ１かである。Charging and discharging current value of 200 mA using tt electrode using alloy described in 1゜
/g! , 511. The battery type 11' is charged and discharged for 1. A cycle test was conducted in charging and discharging 1 under the condition that the cycle test was performed until reaching Ov. FIG. 1 shows the relationship between the number of cycles and the output X11 capacity IIt at that time. In the battery A-1'' using the electrode according to the present invention, although the discharge capacity 11t decreases as the charge/discharge cycle progresses, the degree of the low -F is about 1 compared to the comparative battery C.
このように本発明電極を用いた電池の特性向、１−は、
比較的柔らかい８１−類元素、アルカリ１−類元素−ニ
ッケル系の１：、なる金属相内に、ホウ素を含む従たる
金属相が分散されているために合金が硬化し、微粉化が
抑制されたことと、このような構成の合金は硬いが脆い
ｔ：め、初ｊｌＪＩに比較的大きいクラックが発生し、
クラック内に生成した新しい反応面には電解液が容易に
浸透し得るので初期放電特性が向１−シたものと考えら
れる。As described above, the characteristics of the battery using the electrode of the present invention, 1-, are as follows:
Because the secondary metal phase containing boron is dispersed within the relatively soft metal phase of 81-class elements, alkali 1-class elements, and nickel, the alloy hardens and pulverization is suppressed. In addition, since the alloy with this structure is hard but brittle, a relatively large crack occurred at the first jlJI.
It is thought that the initial discharge characteristics were improved because the electrolytic solution could easily penetrate into the new reaction surface formed within the crack.
（ト）発明の効果
本発明は以１−の説明から明らかなように、アルカリ蓄
−り池用水素坂蔵合金Ｘ１ｆ、極を、組成式Ｒｅ−Ｍ（
ただし、＋＜ｃｌ、ｔ＠ｌ−類元素、アルカリーＬ類元
素の・秤量１１、ＭはＮｉ、Ｃｏ、Ｍ ｎ、Δ１、Ｃｒ
、Ｆ ｅ、Ｃｕ、 Ｓｎ、 Ｓｂ、 Ｍｏ、 Ｖ
、 Ｎｂ、 Ｔａ、 Ｚｎ、 Ｚ 「、Ｔｉのうち
から選ばれた一秤量１−）で表されるにたる金属相と、
少くともホウ素を含む従たる金属相との複数の金属間化
合物相によって構成させているので、充放電の１サイク
ル１１から電極の活性化が−れ、充放電の初期から高１
・充放ｔ１ｚ効）林が得られ、充分な電気化学容量を有
する二次電池を形成することができろ１．
４、図面の簡はｔ ｆｃ 、ｆｆｌ明
第１図は本発明・電極を用いた電池の充放電サイクル数
と放１ｕ′８量との関係曲線図である。(G) Effects of the Invention As is clear from the explanation in 1- below, the present invention provides hydrogen slope storage alloy X1f for alkaline storage ponds, an electrode with the composition formula Re-M (
However, +<cl, t@l- class element, alkaline L class element - Weighness 11, M is Ni, Co, M n, Δ1, Cr
, Fe, Cu, Sn, Sb, Mo, V
, Nb, Ta, Zn, Z", a metal phase represented by a basis weight 1-) selected from Ti,
Since the electrode is composed of multiple intermetallic compound phases with a secondary metal phase containing at least boron, the electrode is activated from one charge/discharge cycle 11, and the high
・Charge/discharge t1z effect) can be obtained and a secondary battery with sufficient electrochemical capacity can be formed.1. 4. The simplified drawings are t fc and ffl. FIG. 1 is a graph showing the relationship between the number of charge/discharge cycles and the amount of emitted 1u'8 of a battery using the electrode of the present invention.
Claims (2)
、その主たる金属相が組成式Ｒｅ−Ｍ（ただし、Ｒｅは
希土類元素、アルカリ土類元素の一種以上、ＭはＮｉ、
Ｃｏ、Ｍｎ、Ａｌ、Ｃｒ、Ｆｅ、Ｃｕ、Ｓｎ、Ｓｂ、Ｍ
ｏ、Ｖ、Ｎｂ、Ｔａ、Ｚｎ、Ｚｒ、Ｔｉのうちから選ば
れた一種以上）で表され、従たる金属相が少なくともホ
ウ素を含むことを特徴とするアルカリ蓄電池用水素吸蔵
合金電極。(1) An alloy composed of multiple intermetallic compound phases, the main metal phase of which has the composition formula Re-M (where Re is one or more of rare earth elements and alkaline earth elements, M is Ni,
Co, Mn, Al, Cr, Fe, Cu, Sn, Sb, M
1. A hydrogen storage alloy electrode for an alkaline storage battery, characterized in that the secondary metal phase contains at least boron.
合物相、ホウ素とＶａ属元素との化合物相、及びホウ素
とVIａ属元素との化合物相から選ばれる少なくとも一種
の金属相を含む請求項１記載のアルカリ蓄電池用水素吸
蔵合金電極。(2) The secondary metal phase includes at least one metal phase selected from a compound phase of boron and a group IVa element, a compound phase of boron and a group Va element, and a compound phase of boron and a group VIa element. The hydrogen storage alloy electrode for alkaline storage batteries according to claim 1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2080116A JP2962763B2 (en) | 1990-03-28 | 1990-03-28 | Hydrogen storage alloy electrode for alkaline storage batteries |
| DE4101753A DE4101753A1 (en) | 1990-01-22 | 1991-01-22 | Hydrogen absorbing metal-alloy for use in alkaline batteries - gives improved charging-discharging as well as cycling performance due to presence of boron-rich phase |
| US08/019,340 US5290509A (en) | 1990-01-22 | 1993-02-18 | Multiphase hydrogen-absorbing alloy electrode for an alkaline storage cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2080116A JP2962763B2 (en) | 1990-03-28 | 1990-03-28 | Hydrogen storage alloy electrode for alkaline storage batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03280357A true JPH03280357A (en) | 1991-12-11 |
| JP2962763B2 JP2962763B2 (en) | 1999-10-12 |
Family
ID=13709224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2080116A Expired - Lifetime JP2962763B2 (en) | 1990-01-22 | 1990-03-28 | Hydrogen storage alloy electrode for alkaline storage batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2962763B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0609609A3 (en) * | 1993-02-05 | 1994-08-31 | Sanyo Electric Co | |
| CN119703068A (en) * | 2024-12-27 | 2025-03-28 | 中国科学院长春应用化学研究所 | Rare earth hydrogen storage alloy and preparation method and application thereof |
-
1990
- 1990-03-28 JP JP2080116A patent/JP2962763B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0609609A3 (en) * | 1993-02-05 | 1994-08-31 | Sanyo Electric Co | |
| US5376474A (en) * | 1993-02-05 | 1994-12-27 | Sanyo Electric Co., Ltd. | Hydrogen-absorbing alloy for a negative electrode and manufacturing method therefor |
| CN119703068A (en) * | 2024-12-27 | 2025-03-28 | 中国科学院长春应用化学研究所 | Rare earth hydrogen storage alloy and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2962763B2 (en) | 1999-10-12 |
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