JPH09289045A - Cylindrical air cell - Google Patents
Cylindrical air cellInfo
- Publication number
- JPH09289045A JPH09289045A JP8101100A JP10110096A JPH09289045A JP H09289045 A JPH09289045 A JP H09289045A JP 8101100 A JP8101100 A JP 8101100A JP 10110096 A JP10110096 A JP 10110096A JP H09289045 A JPH09289045 A JP H09289045A
- Authority
- JP
- Japan
- Prior art keywords
- air
- electrode
- mixture
- battery
- repellent film
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、円筒型空気電池に
係わり、詳しくは過放電時における耐漏液特性を向上さ
せた円筒型空気電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical air battery, and more particularly to a cylindrical air battery having improved resistance to liquid leakage during overdischarge.
【０００２】[0002]
【従来の技術】従来の空気電池で代表的なものとしてボ
タン型空気亜鉛電池がある。通常、空気電池は正極に空
気中の酸素を利用するため、他の電池系に比較して体積
当たりより多くの容量密度を得ることができる。この特
長を生かし、近年、ボタン型空気電池だけでなく、より
大きなサイズの円筒型空気電池の開発が進められるよう
になってきた。2. Description of the Related Art Button air zinc batteries are typical of conventional air batteries. Normally, an air battery uses oxygen in the air for the positive electrode, and thus can obtain a higher capacity density per volume than other battery systems. Taking advantage of this feature, in recent years, not only button type air batteries but also larger size cylindrical air batteries have been developed.
【０００３】しかし、このような円筒型空気電池で大電
流を得るためには、空気中の酸素を利用するため空気極
を大きくする必要があり、このために電池内の円周に沿
って配置する円筒状の空気極を用いなければならない。However, in order to obtain a large current in such a cylindrical air battery, it is necessary to make the air electrode large in order to utilize oxygen in the air. For this reason, it is arranged along the circumference of the battery. A cylindrical air electrode must be used.
【０００４】ところで、従来のボタン型空気電池では、
撥水膜の一体化されたシート上の空気極を円形に打ち抜
き電池内に挿入する方法を用いていた。このような空気
極を円筒状にして試作した円筒型空気電池は、ボタン型
空気電池に比較して、著しく過放電耐漏液特性が劣るた
め、その寿命が短く必要とする放電容量を得ることがで
きない場合があった。By the way, in the conventional button type air battery,
A method of punching out an air electrode on a sheet having a water-repellent film integrated into a circle and inserting it into a battery was used. The cylindrical air battery prototyped with such an air electrode in a cylindrical shape is significantly inferior to the button-type air battery in over-discharge leakage resistance property, so that its life is short and required discharge capacity can be obtained. There were times when I couldn't.
【０００５】[0005]
【発明が解決しようとする課題】上記した従来の空気電
池の漏液特性悪化の原因を調査したところ、空気極に一
体化されている撥水膜の表面に微小な亀裂が発生してお
り、放電時の漏液はこの微小な亀裂を通して電池容器か
ら電解液がしみ出すことが原因していることが分った。When the cause of the deterioration of the liquid leakage characteristics of the above-mentioned conventional air battery was investigated, it was found that minute cracks were generated on the surface of the water repellent film integrated with the air electrode. It was found that the liquid leakage during discharge was caused by the electrolyte oozing out of the battery container through these minute cracks.
【０００６】本発明は、上記事情に鑑みてなされたもの
で、その目的は空気極に一体化されている撥水膜に微小
な亀裂が生じないようにした空気極を用いることにより
長寿命の円筒型空気電池を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide a long life by using an air electrode in which minute cracks are not formed in a water-repellent film integrated with the air electrode. The object is to provide a cylindrical air battery.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項１は、正極に活性炭等の触媒合剤、
金属集電体、撥水膜等で構成された酸素還元能力を有す
る空気極を用いる円筒型空気電池において、前記撥水膜
は空気極と一体化され、かつこの空気極はあらかじめ円
筒状に成形され、当該円筒型電池容器の内周部に配置さ
れていることを特徴とする。In order to achieve the above object, the first aspect of the present invention is to provide a positive electrode with a catalyst mixture such as activated carbon,
In a cylindrical air battery using an air electrode having an oxygen reducing ability composed of a metal current collector, a water repellent film, etc., the water repellent film is integrated with the air electrode, and the air electrode is previously formed into a cylindrical shape. And is arranged on the inner peripheral portion of the cylindrical battery container.
【０００８】本発明の請求項２は、請求項１記載の円筒
型空気電池において、前記空気極に一体化する撥水膜の
円周方向の引っ張り伸度が、３００％以下に規定したこ
とを特徴とする。According to a second aspect of the present invention, in the cylindrical air battery according to the first aspect, the tensile elongation in the circumferential direction of the water repellent film integrated with the air electrode is specified to be 300% or less. Characterize.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。まず、活性炭と結着剤（ＰＴＦＥ粉末）を
７：３で混合し、空気極の合剤を作成した。これを圧延
ローラを通してシート状にした。これに集電体としてニ
ッケルネットを同じく圧延ローラを用いて一体化し、続
いて撥水膜として各種の引っ張り伸度の異なるＰＴＦＥ
膜を、圧延ローラを用いて一体化し、さらにこれを円筒
状に加工し空気極とした。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. First, activated carbon and a binder (PTFE powder) were mixed at 7: 3 to prepare an air electrode mixture. This was passed through a rolling roller to form a sheet. A nickel net as a current collector was also integrated with this using a rolling roller, and subsequently, a PTFE film with various tensile elongations was formed as a water-repellent film.
The film was integrated by using a rolling roller and further processed into a cylindrical shape to form an air electrode.
【００１０】この空気極を用いて実施例電池として図１
に示すようなＲ６タイプ（直径φ１４，総高５０ｍｍ）
の円筒型空気電池を６個試作した。図２は図１のＡ部分
の拡大図である。FIG. 1 shows an example battery using this air electrode.
R6 type as shown in (diameter φ14, total height 50 mm)
6 cylindrical air batteries were manufactured. FIG. 2 is an enlarged view of a portion A in FIG.
【００１１】図において、１は空気取り入れ孔、２は外
装缶、３は負極合剤、４はセパレータ、５は集電体、６
は空気極合剤、７は撥水膜である。また負極には亜鉛，
電解液には苛性カリ水溶液を用いた。In the figure, 1 is an air intake hole, 2 is an outer can, 3 is a negative electrode mixture, 4 is a separator, 5 is a current collector, 6
Is an air electrode mixture, and 7 is a water repellent film. Also, zinc is used for the negative electrode,
An aqueous solution of caustic potash was used as the electrolytic solution.
【００１２】また、比較例としてボタン型空気電池用の
ＰＴＦＥ膜を一体化した空気極を用いて円筒型空気電池
を試作し、負極には亜鉛，電解液には苛性カリ水溶液を
用いた。As a comparative example, a cylindrical air battery was prototyped using an air electrode integrated with a PTFE film for a button air battery, zinc was used for the negative electrode, and a caustic potash aqueous solution was used for the electrolytic solution.
【００１３】次に、表１には、試作した実施例１乃至実
施例６の電池に使用した各種ＰＴＦＥ膜の空気極での円
周方向、および高さ方向の引っ張り伸度と、試作した実
施例１乃至実施例６の電池の放電利用率（亜鉛利用率）
％および過放電漏液発生率％を示した。さらに、参考例
電池として上記実施例電池よりは大きい円周方向の引っ
張り伸度４００％および５００％の場合についても実施
例と同様に放電利用率（亜鉛利用率）％および過放電漏
液発生率％を調べた。Next, Table 1 shows the tensile elongations of the various PTFE membranes used in the prototype batteries of Examples 1 to 6 in the circumferential direction and the height direction at the air electrode, and the prototype implementation. Discharge utilization rate (zinc utilization rate) of the batteries of Examples 1 to 6
% And the rate of occurrence of overdischarge leakage%. Further, as a reference example battery, in the case where the tensile elongations in the circumferential direction are 400% and 500%, which are larger than those of the above-mentioned example batteries, the discharge utilization rate (zinc utilization rate)% and the over-discharge leakage generation rate are the same as in the examples. I checked the percentage.
【００１４】なお、引っ張り伸度はＪＩＳ Ｐ８１１３
に基づき測定した。また、評価は１０Ω連続放電で行
い、放電利用率は電池に入れた亜鉛の理論容量（ｍＡ
ｈ）に対する実際に放電できた容量の比で計算した。過
放電の評価は、同じく１０Ω連続放電で試作電池の作動
電圧が０．５Ｖ以下になった時から起算して５０時間ま
で放電を行い、空気孔からの電解液の漏液の発生を評価
した。評価の環境は２０℃，６０％ＲＨに管理した。The tensile elongation is JIS P8113.
It measured based on. Further, the evaluation was carried out with a continuous discharge of 10Ω, and the discharge utilization factor was the theoretical capacity (mA) of zinc contained in the battery.
It was calculated by the ratio of the actually discharged capacity to h). In the evaluation of over-discharge, discharge was carried out for 50 hours from the time when the operating voltage of the prototype battery became 0.5 V or less in the same 10 Ω continuous discharge, and the occurrence of electrolyte leakage from the air holes was evaluated. . The evaluation environment was controlled at 20 ° C. and 60% RH.
【００１５】[0015]
【表１】 [Table 1]
【００１６】この表１から円周方向の引っ張り伸度が３
００％以下（実施例１〜実施例６）であると、放電利用
率および漏液発生率も比較例に比べて優れていることが
分かる。なお、参考例１および参考例２に示すように、
円周方向の引っ張り伸度が３００％を越えると、放電利
用率は低下し、漏液発生率は高くなる。From Table 1, the tensile elongation in the circumferential direction is 3
It can be seen that the discharge utilization rate and the liquid leakage generation rate are superior to those of the comparative examples when the content is 00% or less (Examples 1 to 6). As shown in Reference Example 1 and Reference Example 2,
If the tensile elongation in the circumferential direction exceeds 300%, the discharge utilization rate decreases and the liquid leakage generation rate increases.
【００１７】[0017]
【発明の効果】以上説明したように、本発明の請求項１
の円筒型空気電池は、撥水膜と空気極と一体化されかつ
この空気極はあらかじめ円筒状に成形されて円筒型電池
容器の内周部に配置されているので、良好な放電特性を
示しかつ過放電耐漏液特性も優れている。As described above, according to the first aspect of the present invention.
Since the cylindrical air battery of No. 1 is integrated with the water-repellent film and the air electrode, and this air electrode is preliminarily formed into a cylindrical shape and arranged on the inner peripheral portion of the cylindrical battery container, it exhibits good discharge characteristics. Also, it has excellent leakage resistance against over-discharge.
【００１８】また、本発明の請求項２の円筒型空気電池
は、空気極に一体化する撥水膜の円周方向の引っ張り伸
度が、３００％以下に規定されているので、放電利用率
および漏液発生率も優れている。Further, in the cylindrical air battery of claim 2 of the present invention, the tensile elongation in the circumferential direction of the water repellent film integrated with the air electrode is specified to be 300% or less, and therefore the discharge utilization factor. And the leakage rate is also excellent.
【図１】本発明の一実施例の空気電池の断面図。FIG. 1 is a cross-sectional view of an air battery according to an embodiment of the present invention.
【図２】図１のＡ部分の拡大図。FIG. 2 is an enlarged view of a portion A in FIG.
１…空気取り入れ孔、２…外装缶、３…負極合剤、４…
セパレータ、５…集電体、６…空気極合剤、７…撥水
膜。1 ... Air intake hole, 2 ... Exterior can, 3 ... Negative electrode mixture, 4 ...
Separator, 5 ... Current collector, 6 ... Air electrode mixture, 7 ... Water repellent film.
フロントページの続き (72)発明者 川口 正夫 東京都品川区南品川三丁目４番10号 東芝 電池株式会社内Front Page Continuation (72) Inventor Masao Kawaguchi 3-4-10 Minami-Shinagawa, Shinagawa-ku, Tokyo Inside Toshiba Battery Co., Ltd.
Claims (2)
体、撥水膜等で構成された酸素還元能力を有する空気極
を用いる円筒型空気電池において、前記撥水膜は空気極
と一体化され、かつこの空気極はあらかじめ円筒状に成
形され、当該円筒型電池容器の内周部に配置されている
ことを特徴とする円筒型空気電池。1. A cylindrical air battery using an air electrode having an oxygen reducing ability, which is composed of a catalyst mixture such as activated carbon, a metal current collector, and a water repellent film for the positive electrode, wherein the water repellent film is an air electrode. A cylindrical air battery which is integrated and whose air electrode is previously formed into a cylindrical shape and is arranged on the inner peripheral portion of the cylindrical battery container.
て、前記空気極に一体化する撥水膜の円周方向の引っ張
り伸度が、３００％以下に規定したことを特徴とする円
筒型空気電池。2. The cylindrical air battery according to claim 1, wherein the tensile elongation in the circumferential direction of the water-repellent film integrated with the air electrode is specified to be 300% or less. battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10110096A JP4009786B2 (en) | 1996-04-23 | 1996-04-23 | Cylindrical air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10110096A JP4009786B2 (en) | 1996-04-23 | 1996-04-23 | Cylindrical air battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09289045A true JPH09289045A (en) | 1997-11-04 |
| JP4009786B2 JP4009786B2 (en) | 2007-11-21 |
Family
ID=14291678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10110096A Expired - Fee Related JP4009786B2 (en) | 1996-04-23 | 1996-04-23 | Cylindrical air battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4009786B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6558828B1 (en) | 2000-05-26 | 2003-05-06 | Eveready Battery Company, Inc. | Zn/air cell performance in extreme humidity by controlling hydrophobic layer porosity |
| WO2004004032A1 (en) * | 2002-06-28 | 2004-01-08 | Graftech Inc. | Perforated cylindrical fuel cells |
| US9276301B2 (en) | 2012-12-07 | 2016-03-01 | Samsung Electronics Co., Ltd. | Polymeric compound, oxygen permeable membrane, and electrochemical device |
| US9343786B2 (en) | 2012-12-10 | 2016-05-17 | Samsung Electronics Co., Ltd. | Electrochemical device |
| US9899654B2 (en) | 2013-03-29 | 2018-02-20 | Hitachi Zosen Corporation | Metal-air battery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9625574B2 (en) | 2013-02-07 | 2017-04-18 | Src, Inc. | Constant pulse repetition frequency techniques for eliminating second time around returns in pulsed doppler radar |
-
1996
- 1996-04-23 JP JP10110096A patent/JP4009786B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6558828B1 (en) | 2000-05-26 | 2003-05-06 | Eveready Battery Company, Inc. | Zn/air cell performance in extreme humidity by controlling hydrophobic layer porosity |
| WO2004004032A1 (en) * | 2002-06-28 | 2004-01-08 | Graftech Inc. | Perforated cylindrical fuel cells |
| US6960402B2 (en) | 2002-06-28 | 2005-11-01 | Advanced Energy Technology Inc. | Perforated cylindrical fuel cells |
| CN100359728C (en) * | 2002-06-28 | 2008-01-02 | 先进能源科技公司 | Perforated cylindrical fuel cells |
| US9276301B2 (en) | 2012-12-07 | 2016-03-01 | Samsung Electronics Co., Ltd. | Polymeric compound, oxygen permeable membrane, and electrochemical device |
| US9343786B2 (en) | 2012-12-10 | 2016-05-17 | Samsung Electronics Co., Ltd. | Electrochemical device |
| US9899654B2 (en) | 2013-03-29 | 2018-02-20 | Hitachi Zosen Corporation | Metal-air battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4009786B2 (en) | 2007-11-21 |
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