JPH03149753A - Nickel electrode for alkaline battery - Google Patents
Nickel electrode for alkaline batteryInfo
- Publication number
- JPH03149753A JPH03149753A JP1288367A JP28836789A JPH03149753A JP H03149753 A JPH03149753 A JP H03149753A JP 1288367 A JP1288367 A JP 1288367A JP 28836789 A JP28836789 A JP 28836789A JP H03149753 A JPH03149753 A JP H03149753A
- Authority
- JP
- Japan
- Prior art keywords
- binder
- electrode
- nickel
- conductive agent
- 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.)
- Pending
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 29
- 229910052759 nickel Inorganic materials 0.000 title claims description 14
- 239000006258 conductive agent Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims abstract description 6
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000005060 rubber Substances 0.000 claims abstract description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 claims 1
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- 229910000428 cobalt oxide Inorganic materials 0.000 claims 1
- 239000011149 active material Substances 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007600 charging Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 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
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はニッケルーカドミウム電池、ニッケルー亜鉛電
池、ニッケル一水素電池などのニッケル極を用いるアル
カリ蓄電池に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to alkaline storage batteries using nickel electrodes, such as nickel-cadmium batteries, nickel-zinc batteries, and nickel-hydrogen batteries.
従来の技術
各種の電源として使われる蓄電池として鉛電池とアルカ
リ電池がある。このうちアルカリ蓄電池は高信預性が期
待でき、小型なものは各種ポータブル機器用に 大型な
ものは産業用として広く使われてきた
このアルカリ蓄電池において、負極としてはカドミウム
の他に亜抵 鉄、水素などが対象となっていも しかし
正極としては一部空気極や酸化銀極なども取り上げら
れているがほとんどの場合ニッケル極であａ このニッ
ケル極は近年焼結式が用いられ ニッケル極の特性が向
上し さらに密閉化が可能になるとともに用途も広がっ
てきていも
しかし 焼結式では基板の多孔度を８５％以上にすると
強度が大幅に低下するので活物質の充填に限界があり、
したがって高容量化に限界があった そのた八 発泡状
基板や繊維状基板が取り上げられ一部実用化されていも
一方において、水酸化ニッケルに導電剤と結着剤を加
えてシート状に加工して得られる非焼結式が広く研究さ
れていも
発明が解決しようとする課題
しかし ニッケル極の活物質である水酸化ニラケルは充
電 放電いずれの状態でも電子伝導性がほとんどないこ
とと充放電の繰り返しで電極が膨潤する傾向があるので
充分特性が優れ長寿命の非焼結式ニッケル極は出現して
いなく〜 すなわ板導電性を高め活物質の利用率を向上
するために他の電子伝導性に優れた導電剤を多量に加え
ると活物質の絶対量が減ってしま賎 また膨潤や活物質
の脱落を抑えるために有効な結着剤の量を増すと電極の
電子伝導が低下して電圧低下や容量が減少すム 本発明
はこのような問題を解決出来るアルカリ電池用ニッケル
極を提供せんとするものであ課題を解決するための手段
本発明は水酸化ニッケルに導電剤と結着剤を加えてシー
ト状に加工して得られる電極として、結着剤としてゴム
系樹脂 導電剤として繊維状黒鉛を用いるアルカリ電池
用ニッケル極であ４作用
上記の如く、結着剤としてゴム系樹脂を用いているので
、少ない添加量でシートの強度や可撓性に優れていて取
扱が容易であり、また熱可塑性であるので加熱下で加圧
する強度が向上すも しかも樹脂の添加量が少なくても
よいので活物質の利用率の低下も少なし 又 繊維状の
黒鉛を用いているので少ない添加量でもその形状から活
物質との接触がよく利用率が向上するので電極単位当り
の容量が大きくなも
実施例
以下、本発明の実施例を説明す４ 市販の水酸化ニッケ
ル粉末７５凰 コバルト粉末６部それに導電体として繊
維状黒鉛１２ＷＬ ニッケル粉末３昆 補強剤としてア
クリロニトリル系単繊維０゜８部これにスチレン−ブタ
ジエン共重合体の２（重量）％のトルエン溶液をこの樹
脂が水酸化ニッケルに対して３．５部になるように加え
てペーストとすム このペーストを厚さＯ，１７ｍｍ、
孔径１、 ８ｍｍ、 開口度５３％の鉄製でニッ
ケルメッキを施したパンチングメタル板に塗着し０．６
ｍｍのスリットを通して平滑化した その後１２０℃で
１時間乾燥し九 得られた電極はエンボス加工を施した
ローラプレス機を３回通して厚さ０゜５ｍｍに調整しｔ
４ このようにして得られたペースト式ニッケル極を
幅３９ｍｒａ 長さ３１０ｍｍに裁断し リード板を
スポット溶接により取り付けた 相手極として公知のペ
ースト式カドミウム楓 ボリアミド不織布セパレータを
用いて密閉形ニッケルーカドミウム電池を構成し九 電
解液として比重１、２２の苛性カリ水溶液に１５ｇ／１
の水酸化リチウムを溶解して用いた 電池は単２型とし
九 この電池をＡとする。BACKGROUND ART There are lead batteries and alkaline batteries as storage batteries used as various power sources. Among these, alkaline storage batteries can be expected to have high reliability, and the small ones are widely used for various portable devices and the large ones for industrial purposes.In addition to cadmium, the negative electrode of alkaline storage batteries is Even if hydrogen is the target, however, some air electrodes and silver oxide electrodes are used as positive electrodes, but in most cases nickel electrodes are used.In recent years, sintered type nickel electrodes have been used for these nickel electrodes, and the characteristics of nickel electrodes. However, with the sintering method, if the porosity of the substrate is increased to 85% or more, the strength decreases significantly, so there is a limit to how much active material can be filled.
Therefore, there was a limit to increasing the capacity.Although foamed substrates and fibrous substrates have been taken up and put into practical use to some extent, on the other hand, nickel hydroxide is processed into a sheet by adding a conductive agent and a binder. Although the non-sintered type obtained by the nickel electrode has been widely researched, the problem that the invention aims to solve is that the active material of the nickel electrode, nylacel hydroxide, has almost no electronic conductivity in either the charging or discharging state, and the repeated charging and discharging. Therefore, a non-sintered nickel electrode with sufficient characteristics and long life has not appeared because the electrode tends to swell. Adding a large amount of an excellent conductive agent to the electrode will reduce the absolute amount of the active material.Additionally, if the amount of a binder, which is effective in suppressing swelling and shedding of the active material, is increased, the electronic conduction of the electrode will decrease and the voltage will decrease. The present invention aims to provide a nickel electrode for alkaline batteries that can solve these problems.Means for solving the problems The present invention provides nickel hydroxide with a conductive agent and a binder. As described above, the electrode obtained by processing into a sheet shape is a nickel electrode for an alkaline battery that uses a rubber resin as a binder and fibrous graphite as a conductive agent. Because it uses a small amount of resin, the sheet has excellent strength and flexibility and is easy to handle, and because it is thermoplastic, its strength when pressed under heat is improved, and the amount of resin added is small. Since fibrous graphite is used, even if the amount added is small, the shape allows for good contact with the active material, improving the utilization rate, resulting in a large capacity per electrode unit. Examples Examples of the present invention will be described below. 4 Commercially available nickel hydroxide powder 75 parts Cobalt powder 6 parts and fibrous graphite as a conductor 12WL Nickel powder 3 parts Acrylonitrile single fiber 0°8 parts as a reinforcing agent To this, add a 2% (by weight) toluene solution of styrene-butadiene copolymer so that the resin is in an amount of 3.5 parts based on nickel hydroxide to form a paste.
Painted on a nickel-plated punched metal plate made of iron with a hole diameter of 1.8 mm and an opening degree of 53%.
The electrode was passed through a slit of mm in diameter and then dried for 1 hour at 120°C.The resulting electrode was passed through an embossed roller press three times to a thickness of 0.
4 The thus obtained paste-type nickel electrode was cut to a width of 39 mra and length of 310 mm, and a lead plate was attached by spot welding.A sealed nickel-cadmium battery was used as a mating electrode using a known paste-type cadmium maple boryamide nonwoven fabric separator. 15g/1 in a caustic potassium aqueous solution with a specific gravity of 1.22 as an electrolyte.
The battery used by dissolving lithium hydroxide is AA type.9 This battery is designated as A.
つぎに比較のために添加剤として通常の黒鉛粉末を同量
用賎 他はすべてＡ（！：同じにした電池をＢとして加
えた
まず初期の放電電圧と容量を比較し九 ５時間率で容量
の１３０％定電流充電−１、ＯＡで０゜９部までの定電
流放電を行なったとこ＆ Ａ、 Ｂとも平均電圧は
１．２２Ｖであった力（放電容量はＡが２−８Ａｈであ
り、Ｂは２．６Ａｈであっ島
つぎに両電池それぞれ１０セルｍ１ この充放電の条件
で寿命特性を比較した その結果 放電容量が初期の６
０％にまで劣化するサイクル数戟Ａでは７５０〜８２０
サイクルであったのに対して、Ｂでは６５０〜７１０サ
イクルであった この結果から明らかなようにＡが長寿
命であっ九発明の効果
以上 本発明によると非焼結式ニッケル極に結着剤とし
てゴム系樹脂 導電剤として繊維状黒鉛を用いると活−
貫の利用率の低下が少なく高容量で長寿命が達成できもNext, for comparison, the same amount of ordinary graphite powder was used as an additive, and all others were added to A (!: the same battery was added as B.) First, the initial discharge voltage and capacity were compared, and the capacity was calculated at a 95-hour rate. 130% constant current charging -1, constant current discharging to 0°9 parts with OA & the average voltage was 1.22V for both A and B (discharge capacity was 2-8Ah for A). , B was 2.6Ah, and then both batteries were each 10 cells m1.The life characteristics were compared under these charging and discharging conditions.As a result, the discharge capacity was 6 at the initial stage.
The number of cycles that deteriorates to 0% is 750 to 820 in A.
In contrast, in B, it took 650 to 710 cycles.As is clear from these results, A had a longer life and was more effective than the present invention. When rubber-based resin is used as a conductive agent and fibrous graphite is used as a conductive agent, it becomes active.
It is possible to achieve high capacity and long life with less decrease in the utilization rate of the core.
Claims (2)
ート状電極であり、結着剤としてゴム系樹脂、導電剤と
して繊維状黒鉛を用いることを特徴とするアルカリ電池
用ニッケル極。(1) A nickel electrode for alkaline batteries, which is a sheet-like electrode made by adding a conductive agent and a binder to nickel hydroxide, and is characterized by using a rubber-based resin as the binder and fibrous graphite as the conductive agent.
ム粉末を含むことを特徴とする請求項１記載のアルカリ
電池用ニッケル極。(2) The nickel electrode for an alkaline battery according to claim 1, characterized in that it contains at least cobalt and cadmium oxide powder as a conductive agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1288367A JPH03149753A (en) | 1989-11-06 | 1989-11-06 | Nickel electrode for alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1288367A JPH03149753A (en) | 1989-11-06 | 1989-11-06 | Nickel electrode for alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03149753A true JPH03149753A (en) | 1991-06-26 |
Family
ID=17729288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1288367A Pending JPH03149753A (en) | 1989-11-06 | 1989-11-06 | Nickel electrode for alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03149753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012023049A (en) * | 1998-08-17 | 2012-02-02 | Ovonic Battery Co Inc | Composite positive electrode material and its manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298941A (en) * | 1976-02-13 | 1977-08-19 | Japan Storage Battery Co Ltd | Method of manufacturing positive electrode plate for alkaline storage battery |
| JPS63170855A (en) * | 1987-01-09 | 1988-07-14 | Hitachi Ltd | Alkaline storage battery |
-
1989
- 1989-11-06 JP JP1288367A patent/JPH03149753A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298941A (en) * | 1976-02-13 | 1977-08-19 | Japan Storage Battery Co Ltd | Method of manufacturing positive electrode plate for alkaline storage battery |
| JPS63170855A (en) * | 1987-01-09 | 1988-07-14 | Hitachi Ltd | Alkaline storage battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012023049A (en) * | 1998-08-17 | 2012-02-02 | Ovonic Battery Co Inc | Composite positive electrode material and its manufacturing method |
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