JPS6325659Y2 - - Google Patents
Info
- Publication number
- JPS6325659Y2 JPS6325659Y2 JP1982143209U JP14320982U JPS6325659Y2 JP S6325659 Y2 JPS6325659 Y2 JP S6325659Y2 JP 1982143209 U JP1982143209 U JP 1982143209U JP 14320982 U JP14320982 U JP 14320982U JP S6325659 Y2 JPS6325659 Y2 JP S6325659Y2
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- current collector
- collector plate
- edge
- electrode
- 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.)
- Expired
Links
- 229910052725 zinc Inorganic materials 0.000 claims description 30
- 239000011701 zinc Substances 0.000 claims description 30
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 29
- 239000011149 active material Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 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
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical compound [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- Y02E60/124—
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Description
産業上の利用分野
本考案はニツケル−亜鉛電池、銀−亜鉛電池の
ようなアルカリ亜鉛電池に使用される亜鉛極に関
し、特にその集電板の改良に関する。
従来技術
ペースト式亜鉛極は、開孔部及び非開孔部を有
するパンチングメタルからなる集電板に亜鉛活物
質ペーストを固着することにより形成されてい
る。ところが亜鉛極の端縁部における集電板と亜
鉛活物質の密着性が悪く、亜鉛活物質の剥離・脱
落が起り易い。そこで従来から第１図に示すパン
チングメタルからなる集電板の部分正面図から明
らかな如く、開孔部１及び非開孔部２を有する集
電板３の端縁部４に開孔部５を設けるようにして
いる。ところが亜鉛極の端縁部に電流が集中し易
いことから、亜鉛極を渦巻状に巻回して極板を構
成する場合、端縁部での内部短絡が生じ易い。
考案の目的
本考案はパンチングメタルからなる集電板の端
縁部における亜鉛活物質の密着性を損うことな
く、亜鉛極の端縁部での内部短絡の発生を可及的
に抑制せんとするものであり、集電板の端縁部を
非開孔部にすると共にその非開孔部巾を種々検討
して得られたものである。
考案の構成
本考案は、開孔部及び非開孔部を有するパンチ
ングメタルからなる集電板に亜鉛活物質ペースト
を固着してなる亜鉛極であつて、集電板の端縁部
を非開孔部にすると共にこの端縁部の非開孔部巾
を隣接する開孔部間寸法の1/2以下にしたことを
特徴とするものである。
実施例
以下本考案の一実施例を説明する。第２図は集
電板の部分正面図である。
さてパンチングメタルからなる集電板６とし
て、第２図に示すように、小孔よりなる多数の開
孔部７を穿設し、残りを非開孔部８とするもの
で、集電板６の端縁部９を非開孔部１０となし、
その非開孔部巾h1を、隣接する開孔部７，７間寸
法1，2の1/2以下にしたものを用いた。
次に活物質としての酸化亜鉛と添加剤としての
酸化水銀を混合し、この混合物にポリテトラフロ
ルエチレン乳化液を加え、混練してペースト状と
する。このペースト状態を圧延して亜鉛活物質シ
ートを作成した。このシートを集電板６の両面に
圧着して亜鉛極とする。
かかる亜鉛極と周知の焼結式ニツケル極とをセ
パレータを介して渦巻状に巻回した電極体を作成
し、その電極体を円筒容器内に挿入し、電極群に
含浸される程度の電解液を注入した後封口して、
ニツケル−亜鉛蓄電池Ａを作製した。
次に比較のため、第３図に示すパンチングメタ
ルからなる集電板を作成した。即ち開孔部１１と
非開孔部１２を有する集電板１３の端縁部１４を
非開孔部１５となし、その非開孔部巾h2を隣接す
る開孔部１１，１１間寸法1，2の1/2より大
にした集電板１３を作成した。この集電板１３及
び従来の集電板３に実施例と同じ亜鉛活物質シー
トを圧着して亜鉛極となし、実施例と同様に焼結
式ニツケル極と組合せて、ニツケル−亜鉛蓄電池
Ｂ及びＣを作製した。
これらの各蓄電池Ａ〜Ｃを夫々30個ずつ作成
し、組立時の内部短絡の個数を調べた結果を第１
表に示す。
INDUSTRIAL APPLICATION FIELD The present invention relates to zinc electrodes used in alkaline zinc batteries such as nickel-zinc batteries and silver-zinc batteries, and particularly relates to improvements in current collector plates thereof. Prior Art A paste-type zinc electrode is formed by adhering a zinc active material paste to a current collector plate made of punched metal having apertured portions and non-perforated portions. However, the adhesion between the current collector plate and the zinc active material at the edge of the zinc electrode is poor, and the zinc active material is likely to peel off or fall off. Therefore, as is clear from the partial front view of a current collector plate made of punched metal shown in FIG. I am trying to set it up. However, since current tends to concentrate at the edge of the zinc electrode, internal short circuits tend to occur at the edge when the zinc electrode is spirally wound to form an electrode plate. Purpose of the invention The present invention aims to suppress the occurrence of internal short circuits at the edge of the zinc electrode as much as possible without impairing the adhesion of the zinc active material at the edge of the current collector plate made of punched metal. This was obtained by making the edge portion of the current collector plate non-perforated and examining various widths of the non-perforated portion. Structure of the invention The present invention is a zinc electrode in which a zinc active material paste is adhered to a current collector plate made of punched metal having a perforated part and a non-perforated part, and the edge part of the current collector plate is made of a punched metal. It is characterized in that it is made into a hole and the width of the non-opening portion of this edge portion is set to 1/2 or less of the dimension between adjacent openings. Embodiment An embodiment of the present invention will be described below. FIG. 2 is a partial front view of the current collector plate. Now, as shown in FIG. 2, the current collector plate 6 made of punched metal has a large number of openings 7 made of small holes, and the remaining portions are non-openings 8. The edge portion 9 of is made into a non-perforated portion 10,
The width h1 of the non-opening portion was set to be 1/2 or less of the dimension 1 , 2 between the adjacent openings 7, 7. Next, zinc oxide as an active material and mercury oxide as an additive are mixed, a polytetrafluoroethylene emulsion is added to this mixture, and the mixture is kneaded to form a paste. This paste state was rolled to create a zinc active material sheet. This sheet is pressed onto both sides of the current collector plate 6 to form a zinc electrode. An electrode body is created by spirally winding such a zinc electrode and a well-known sintered nickel electrode with a separator in between, and the electrode body is inserted into a cylindrical container, and an electrolytic solution is added to the extent that the electrode group is impregnated. After injecting, seal the
A nickel-zinc storage battery A was produced. Next, for comparison, a current collector plate made of punched metal as shown in FIG. 3 was prepared. That is, the edge part 14 of the current collector plate 13 having the aperture part 11 and the non-aperture part 12 is defined as the non-aperture part 15, and the non-aperture part width h2 is the dimension between adjacent aperture parts 11, 11. A current collector plate 13 larger than 1/2 of 1 and 2 was created. The same zinc active material sheet as in the example is bonded to this current collector plate 13 and the conventional current collector plate 3 to form a zinc electrode, and in combination with a sintered nickel electrode as in the example, nickel-zinc storage battery B and C was produced. We created 30 of each of these storage batteries A to C and investigated the number of internal short circuits during assembly.
Shown in the table.
【表】
第４図はこれらの蓄電池Ａ〜Ｃのサイクル特性
比較図であり、特性Ａ乃至Ｃは同一符号を付した
蓄電池のサイクル特性である。充放電条件は
1.5AHの蓄電池を５時間率の電流（300ｍＡ）で
充放電するものである。このサイクル特性比較図
から、本考案による集電板６を用いた蓄電池Ａが
他の蓄電池Ｂ，Ｃより安定したサイクル寿命を有
することがわかる。従来の集電板３を用いた蓄電
池Ｃは100サイクル程度で内部短絡を生じて寿命
がつきるものがあり、サイクル寿命に大きなバラ
ツキがあつた。
サイクル寿命の試験後に、各蓄電池Ａ〜Ｃを分
解したところ、本考案による集電板６を用いた亜
鉛極は、その形状変化が少なく、亜鉛極全面で反
応していた。これに対し集電板１３を用いた亜鉛
極は、端縁部の亜鉛活物質の剥離が多く、活物質
と集電板の結着力が弱いことを示している。
考案の効果
以上の如く本考案は、ペースト式亜鉛極におけ
るパンチングメタルからなる集電板として開孔部
及び非開孔部を有し、且集電板の端縁部を非開孔
部にすると共にその端縁部の非開孔部巾を、隣接
する開孔部間寸法の1/2以下にしたものを用いた
から、集電板の端縁部における集電板と活物質の
結着力が強く、またその端縁部による電流集中が
少なく、端縁部における亜鉛活物質の移動を抑制
することができ、この亜鉛極を用いたアルカリ亜
鉛蓄電池のサイクル特性を改善することができ
る。[Table] FIG. 4 is a comparison diagram of the cycle characteristics of these storage batteries A to C. Characteristics A to C are the cycle characteristics of the storage batteries with the same reference numerals. The charging and discharging conditions are
It charges and discharges a 1.5AH storage battery at a 5 hour rate of current (300mA). From this cycle characteristic comparison diagram, it can be seen that the storage battery A using the current collector plate 6 according to the present invention has a more stable cycle life than the other storage batteries B and C. Some of the storage batteries C using conventional current collector plates 3 have an internal short circuit that occurs after about 100 cycles and their lifespan ends, and there is a large variation in cycle life. When each of the storage batteries A to C was disassembled after the cycle life test, it was found that the zinc electrode using the current collector plate 6 according to the present invention showed little change in shape and reacted over the entire surface of the zinc electrode. On the other hand, in the case of the zinc electrode using the current collector plate 13, there was a lot of peeling of the zinc active material at the edge, indicating that the binding force between the active material and the current collector plate was weak. Effects of the invention As described above, the present invention provides a current collector plate made of punched metal in a paste-type zinc electrode that has a perforated part and a non-perforated part, and also makes the edge of the current collector plate a non-perforated part. At the same time, the width of the non-opening part at the edge of the current collector plate was set to be less than 1/2 of the dimension between adjacent openings, so the binding force between the current collector plate and the active material at the edge of the current collector plate was reduced. It is strong, and there is little current concentration at the edge, and movement of the zinc active material at the edge can be suppressed, and the cycle characteristics of an alkaline zinc storage battery using this zinc electrode can be improved.
第１図は従来の集電板の部分正面図、第２図は
本考案による集電板の部分正面図、第３図は比較
のために作成した集電板の部分正面図、第４図は
本考案による亜鉛極を用いた蓄電池と比較電池の
サイクル特性比較図である。
Figure 1 is a partial front view of a conventional current collector plate, Figure 2 is a partial front view of a current collector plate according to the present invention, Figure 3 is a partial front view of a current collector plate prepared for comparison, and Figure 4 is a comparison diagram of cycle characteristics of a storage battery using a zinc electrode according to the present invention and a comparative battery.
Claims (1)
タルからなる集電板６に亜鉛活物質ペーストを固
着してなる亜鉛極であつて、前記集電板６の端縁
部９を非開口部８にすると共にこの端縁部９の非
開口部巾h1を隣接する開口部７，７間寸法1，
2の1/2以下にしたことを特徴とする亜鉛極。 A zinc electrode is formed by adhering a zinc active material paste to a current collecting plate 6 made of punched metal having an opening 7 and a non-opening part 8, and the end edge 9 of the current collecting plate 6 has a non-opening part 8. In addition, the non-opening width h1 of the edge portion 9 is defined as the dimension 1 between the adjacent openings 7,
A zinc electrode characterized by being less than 1/2 of 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982143209U JPS5946455U (en) | 1982-09-20 | 1982-09-20 | zinc electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982143209U JPS5946455U (en) | 1982-09-20 | 1982-09-20 | zinc electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946455U JPS5946455U (en) | 1984-03-28 |
| JPS6325659Y2 true JPS6325659Y2 (en) | 1988-07-13 |
Family
ID=30319733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982143209U Granted JPS5946455U (en) | 1982-09-20 | 1982-09-20 | zinc electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946455U (en) |
-
1982
- 1982-09-20 JP JP1982143209U patent/JPS5946455U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946455U (en) | 1984-03-28 |
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