JPH04220959A - Ni-h storage battery - Google Patents
Ni-h storage batteryInfo
- Publication number
- JPH04220959A JPH04220959A JP2405029A JP40502990A JPH04220959A JP H04220959 A JPH04220959 A JP H04220959A JP 2405029 A JP2405029 A JP 2405029A JP 40502990 A JP40502990 A JP 40502990A JP H04220959 A JPH04220959 A JP H04220959A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- storage battery
- negative electrode
- hydrogen storage
- nickel
- 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
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 27
- 239000001257 hydrogen Substances 0.000 claims abstract description 27
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910018502 Ni—H Inorganic materials 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 235000019441 ethanol Nutrition 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 239000003518 caustics Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polytetrachlorethylene Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 229910020799 Co0.5Al0.5 Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene 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
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate 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)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は水素吸蔵合金電極を負極
とするニッケル−水素蓄電池の改良に関するものである
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a nickel-hydrogen storage battery using a hydrogen storage alloy electrode as a negative electrode.
【０００２】0002
【従来の技術】近時ニッケル−水素蓄電池の負極として
水素吸蔵合金が使用されている。この合金は従来の負極
活物質と使用されているカドミウム，鉄等と異りアルカ
リ性電解液例えば苛性カリ水溶液中化にて充放電を行う
と、活物質である水素を吸蔵、放出するという特性を有
し、ニッケル−水素蓄電池の負極として有用視されてい
るものである。然しながらこの合金は水素の吸蔵及び放
出することにより合金格子が変形し合金粒子の微粉化を
起すため上記の如き負極としての作用を著しく減少せし
めるという問題があった。従って合金粒子の微粉化を防
止するために該合金に結着剤例えば未焼成ポリテトラク
ロロエチレン、ポリエチレンなどを混入せしめて強化せ
しめているものである。2. Description of the Related Art Recently, hydrogen storage alloys have been used as negative electrodes for nickel-hydrogen storage batteries. Unlike cadmium, iron, etc. used in conventional negative electrode active materials, this alloy has the property of absorbing and releasing hydrogen, which is an active material, when charged and discharged in an alkaline electrolyte, such as a caustic potassium aqueous solution. However, it is considered useful as a negative electrode for nickel-hydrogen storage batteries. However, this alloy has a problem in that the alloy lattice is deformed due to absorption and release of hydrogen and the alloy particles are pulverized, which significantly reduces the function as a negative electrode as described above. Therefore, in order to prevent the alloy particles from becoming pulverized, the alloy is strengthened by mixing a binder such as unfired polytetrachlorethylene or polyethylene.
【０００３】然ながらこれらの結着剤は通常撥水性を有
するため、電解液の滲入を阻止し、結着剤を混入せる水
素吸蔵合金は電極としての作用即ち蓄電池の初期容量が
必要とされる２００ｍＡｈ／ｇ以上を大きく下回り所定
の容量を取り出すことが出来ないという問題があった。However, since these binders usually have water repellency, they prevent the electrolyte from seeping in, and the hydrogen storage alloy into which the binder is mixed is required to act as an electrode, that is, to increase the initial capacity of the storage battery. There was a problem in that it was far below 200 mAh/g and a predetermined capacity could not be extracted.
【０００４】0004
【発明が解決しようとする課題】本発明はかかる現状に
鑑み鋭意研究を行った結果、結着剤を混入せる水素吸蔵
合金電極の負極内に電解液を容易に浸入せしめて蓄電池
の初期容量に何等の悪影響を及ぼすことのないニッケル
−水素蓄電池を開発したものである。[Problems to be Solved by the Invention] As a result of extensive research in view of the current situation, the present invention aims to increase the initial capacity of a storage battery by easily infiltrating an electrolyte into the negative electrode of a hydrogen storage alloy electrode into which a binder is mixed. We have developed a nickel-hydrogen storage battery that does not cause any negative effects.
【０００５】[0005]
【課題を解決するための手段】本発明は水素吸蔵合金電
極を負極としアルカリ性水溶液を電解液とするニッケル
−水素蓄電池において、該電解液としてアルカリ性水溶
液にアルコールを添加したことを特徴とするニッケル−
水素蓄電池である。[Means for Solving the Problems] The present invention provides a nickel-hydrogen storage battery having a hydrogen storage alloy electrode as a negative electrode and an alkaline aqueous solution as an electrolyte, characterized in that alcohol is added to the alkaline aqueous solution as the electrolyte.
It is a hydrogen storage battery.
【０００６】[0006]
【作用】本発明はニッケル−水素蓄電池の電解液として
アルコール例えばエチルアルコール、メチルアルコール
等をアルカリ性水溶液例えば苛性カリ水溶液中に添加し
たアルカリ性混合水溶液を使用することにより、水素吸
蔵合金にフッ素樹脂等の結着剤を混入した電極にて負極
を形成したとしても、該結着剤と電解液との漏れ性を著
しく改善することが出来るから、該負極と電解液との界
面エネルギーを降下せしめて該負極内に電解液を容易に
浸入せしめ該負極内に電解液を保持して水素を吸蔵、放
出し、ニッケル−水素蓄電池として優れた効果を発揮す
ることが出来るのである。[Operation] The present invention uses an alkaline mixed aqueous solution in which alcohol such as ethyl alcohol, methyl alcohol, etc. is added to an alkaline aqueous solution such as a caustic potassium aqueous solution as an electrolyte for a nickel-hydrogen storage battery. Even if the negative electrode is formed with an electrode mixed with a binder, the leakage between the binder and the electrolyte can be significantly improved, so the interfacial energy between the negative electrode and the electrolyte is lowered and the negative electrode The electrolytic solution can be easily penetrated into the negative electrode, and the electrolytic solution can be retained within the negative electrode to absorb and release hydrogen, thereby making it possible to exhibit excellent effects as a nickel-hydrogen storage battery.
【０００７】なおアルカリ性水溶液中に添加するアルコ
ールの量としてはアルカリ性水溶液に対し１〜１０ｖｏ
ｌ ％程度でよい。又アルカリ性水溶液の濃度は通常２
０〜３０ｗｔ％の苛性ソーダ水溶液を使用する。[0007] The amount of alcohol added to the alkaline aqueous solution is 1 to 10 vol.
It may be about 1%. Also, the concentration of alkaline aqueous solution is usually 2
A 0 to 30 wt% aqueous solution of caustic soda is used.
【０００８】[0008]
【実施例】鉄製薄板にニッケルメッキを施した多孔性シ
ートの両面にカーポニルニッケル粉末に増粘剤を添加し
たスラリーを塗付、乾燥及び焼結した多孔性ニッケル焼
結基板にニッケル活物質を充填してニッケル極板をえた
、この極板（幅４０ｍｍ、高さ５０ｍｍ、厚さ１．３０
ｍｍ）を正極とした。[Example] A slurry of carbonyl nickel powder with a thickener added is applied to both sides of a porous sheet made of a thin iron plate plated with nickel, and a nickel active material is applied to the porous sintered nickel substrate, which is dried and sintered. This electrode plate (width 40 mm, height 50 mm, thickness 1.30
mm) was used as the positive electrode.
【０００９】又水素吸蔵合金としてＳＬｍＮｉ４．０
Ｃｏ０．５Ａｌ０．５を粉末化し、この粉末にポリ弗化
ビニリデン（ＰＶＤＦ）粉末７ｗｔ％とＮｉ粉末３０ｗ
ｔ％を夫々添加し且つ増粘剤としてＣＭＣ／ｗｔ％を添
加してスラリー状とし、これをニッケルからなる基体に
充填、乾燥、圧延した後、１６０℃の真空雰囲気中にて
１時間熱処理を施して得た水素吸蔵合金電極（幅４０ｍ
ｍ、高さ５０ｍｍ、厚さ０．４ｍｍ）を負極とした。[0009] Also, as a hydrogen storage alloy, SLmNi4.0
Co0.5Al0.5 is powdered, and 7wt% of polyvinylidene fluoride (PVDF) powder and 30w of Ni powder are added to this powder.
t% and CMC/wt% as a thickener to form a slurry, which was filled into a base made of nickel, dried and rolled, and then heat treated in a vacuum atmosphere at 160°C for 1 hour. Hydrogen storage alloy electrode (width 40m) obtained by
m, height 50 mm, thickness 0.4 mm) was used as a negative electrode.
【００１０】この正極及び負極との間に厚さ０．２ｍｍ
のナイロンセパレータを介在せしめ、電解液として３０
ｗｔ％の苛性カリ水溶液中にエチルアルコールを５ｖｏ
ｌ ％添加したアルカリ性混合水溶液を使用して本発明
ニッケル−水素蓄電池をえた。[0010] A thickness of 0.2 mm is provided between the positive electrode and the negative electrode.
A nylon separator of 30% is used as the electrolyte.
5 vol of ethyl alcohol in wt% caustic potassium aqueous solution
A nickel-hydrogen storage battery of the present invention was obtained using an alkaline mixed aqueous solution to which 1% was added.
【００１１】又本発明ニッケル−水素蓄電池と比較する
ために上記実施例において電解液として３０ｗｔ％の苛
性カリ水溶液のみに形成した以外はすべて実施例と同様
にして比較例ニッケル−水素蓄電池をえた。斯くしてえ
た本発明ニッケル−水素蓄電池と比較例ニッケル−水素
蓄電池とについてその性能を比較するために初期容量試
験を行った。For comparison with the nickel-hydrogen storage battery of the present invention, a comparative nickel-hydrogen storage battery was prepared in the same manner as in the above example except that only a 30 wt % aqueous caustic potassium solution was used as the electrolyte. An initial capacity test was conducted to compare the performance of the thus obtained nickel-hydrogen storage battery of the present invention and the comparative nickel-hydrogen storage battery.
【００１２】即ち充電を５ｍＡ／ｃｍ２ の電流にて１
５％行い、０．１５ＶｖｓＣｄまで放電した。なお測定
温度は室温にて５サイクル充放電を行った。その結果は
第１表に示す通りである。[0012] That is, charging is carried out at a current of 5 mA/cm2.
5% and discharged to 0.15V vs Cd. Note that the measurement temperature was room temperature, and 5 cycles of charging and discharging were performed. The results are shown in Table 1.
【００１３】[0013]
【表１】[Table 1]
【００１４】上表から明らかな如く本発明蓄電池は比較
例蓄電池に比較して１サイクル目の容量が２倍以上大き
いことが認められた。これは初期の段階において負極の
漏れ性が改善され、理想的に電解液が極板内に保持され
たことによるものと推考される。As is clear from the above table, the storage battery of the present invention was found to have a first cycle capacity more than twice as large as that of the comparative storage battery. This is thought to be because the leakage of the negative electrode was improved in the initial stage and the electrolyte was ideally retained within the electrode plate.
【００１５】[0015]
【発明の効果】以上詳述した如く本発明ニッケル−水素
蓄電池によればその充放電による容量において１サイク
ルから容量が向上し蓄電池として優れた性能を発揮する
と共に、充放電を繰返すも電極（負極）に変形を生ぜし
めることなく長期使用にたえうる等工業上極めて有用の
ものである。Effects of the Invention As detailed above, the nickel-metal hydride storage battery of the present invention improves its capacity from the first cycle through charging and discharging, and exhibits excellent performance as a storage battery. ) is extremely useful industrially as it can withstand long-term use without causing deformation.
Claims (1)
リ性水溶液を電解液とするニッケル−水素蓄電池におい
て、該電解液としてアルカリ性水溶液にアルコールを添
加したことを特徴とするニッケル−水素蓄電池。1. A nickel-hydrogen storage battery having a hydrogen storage alloy electrode as a negative electrode and an alkaline aqueous solution as an electrolyte, characterized in that alcohol is added to the alkaline aqueous solution as the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405029A JPH04220959A (en) | 1990-12-21 | 1990-12-21 | Ni-h storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405029A JPH04220959A (en) | 1990-12-21 | 1990-12-21 | Ni-h storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04220959A true JPH04220959A (en) | 1992-08-11 |
Family
ID=18514671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2405029A Pending JPH04220959A (en) | 1990-12-21 | 1990-12-21 | Ni-h storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04220959A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002338217A (en) * | 2001-05-19 | 2002-11-27 | Korea Electronics Telecommun | Method for ultrasonic-chemically preparing vopo4.2h2o, and application of the product for lithium secondary battery positive electrode material |
| JP2008547184A (en) * | 2005-06-27 | 2008-12-25 | スタウファー，ジョーン，イー． | Lead alkaline battery |
| JP2014192066A (en) * | 2013-03-28 | 2014-10-06 | Nissan Motor Co Ltd | Electrolyte for alkaline battery, and alkaline battery |
-
1990
- 1990-12-21 JP JP2405029A patent/JPH04220959A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002338217A (en) * | 2001-05-19 | 2002-11-27 | Korea Electronics Telecommun | Method for ultrasonic-chemically preparing vopo4.2h2o, and application of the product for lithium secondary battery positive electrode material |
| JP2008547184A (en) * | 2005-06-27 | 2008-12-25 | スタウファー，ジョーン，イー． | Lead alkaline battery |
| JP2014192066A (en) * | 2013-03-28 | 2014-10-06 | Nissan Motor Co Ltd | Electrolyte for alkaline battery, and alkaline battery |
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