JPH063735B2 - Flat plate battery - Google Patents
Flat plate batteryInfo
- Publication number
- JPH063735B2 JPH063735B2 JP59211676A JP21167684A JPH063735B2 JP H063735 B2 JPH063735 B2 JP H063735B2 JP 59211676 A JP59211676 A JP 59211676A JP 21167684 A JP21167684 A JP 21167684A JP H063735 B2 JPH063735 B2 JP H063735B2
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- battery
- electrode mixture
- binder
- flat plate
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat electrodes
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は正極合剤へ特定の添加剤を一定量加えることを
特徴とした平板型電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a flat plate battery characterized in that a certain amount of a specific additive is added to a positive electrode mixture.
〔従来の技術〕 従来、平板型電池の正極合剤中に添加剤を加えることが
知られていた。例えば特公昭５７−３９０２８号公報に
テキサス州ヒューストンのExxon Chemical社で製造販売
されている乳液，ＢＰ−１００を加えることが開示され
ている。[Prior Art] It has been conventionally known that an additive is added to a positive electrode mixture of a flat plate battery. For example, Japanese Patent Publication No. 57-39028 discloses that BP-100, an emulsion manufactured and sold by Exxon Chemical Co. of Houston, Texas, is added.
現在、二酸化マンガンを主体とした正極合剤、亜鉛末を
主体とした負極合剤及び塩化アンモニウムを主体とした
電解液を用いたルクランシェタイプの平板型電池が、ポ
ラロイド社より市販されている。この電池はインスタン
トカメラのフィルム送り出し用モータやストロボ充電用
等の電源として用いられている。その他、ラジオ，強化
ライト及び電子玩具等にも使われている。At present, a Polaroid type flat-type battery using a positive electrode mixture mainly composed of manganese dioxide, a negative electrode mixture mainly composed of zinc powder and an electrolyte mainly composed of ammonium chloride is commercially available from Polaroid. This battery is used as a power source for a film feeding motor of an instant camera and a strobe charging. In addition, it is also used in radios, reinforced lights and electronic toys.
第１図は従来の平板型電池の断面図である。１及び６
は、導電性プラスチックフィルム（以下導プラと記す）
とアルミ箔をラミネートしたラミネートフィルム（以下
ラミネートと記す）、４は中間電極として用いられてい
る導プラであり、この導プラの表面に正極合剤層２ａ，
２ｂと負極合剤層５ａ，５ｂが塗着されている。さら
に、電解液が含浸されたセパレータ３ａ，３ｂが前記正
・負極合剤層を分離している。ここで、前記負極合剤層
５ａ，５ｂは亜鉛金属の粉末を主体としてエチルセルロ
ース等の結着剤を微量添加し、スクリーン印刷法あるい
は押出し法等の塗着法により印刷されるが、結着剤の量
は少量であっても比較的安定な接着力を保持しかつ電池
反応をも阻害しない。しかし、前記正極合剤層２ａ，２
ｂは酸化物である二酸化マンガンを主体としているた
め、正極活物質内の電気的接触をとるためアセチレンブ
ラックを加える。アセチレンブラックは、極めて微少な
粒子による粉体であるため、前記導プラ１，４表面に接
着させるために、一定量の結着剤が必要となる。従来は
この接着剤にアクリル系のエマルジョンを使用してい
た。アクリル系エマルジョン中の接着成分は、前記正極
合剤と均等に混合され二酸化マンガン粉やアセチレンブ
ラック粉の粒子を結着させると同時に、前記導プラ表面
に接着させるバインダーとして機能する。FIG. 1 is a sectional view of a conventional flat battery. 1 and 6
Is a conductive plastic film (hereinafter referred to as conductive plastic)
A laminated film (hereinafter referred to as a laminate) in which aluminum and aluminum foil are laminated, 4 is a conductive plastic used as an intermediate electrode, and the positive electrode mixture layer 2a,
2b and the negative electrode mixture layers 5a and 5b are applied. Further, the separators 3a and 3b impregnated with the electrolytic solution separate the positive and negative electrode mixture layers. Here, the negative electrode mixture layers 5a and 5b are printed by a coating method such as a screen printing method or an extrusion method with a zinc metal powder as a main component and a small amount of a binder such as ethyl cellulose added thereto. Even if the amount is small, it maintains a relatively stable adhesive force and does not hinder the battery reaction. However, the positive electrode mixture layers 2a, 2
Since b is mainly composed of manganese dioxide which is an oxide, acetylene black is added to make electrical contact with the inside of the positive electrode active material. Since acetylene black is a powder made of extremely small particles, a certain amount of binder is required to adhere it to the surfaces of the conductive plastic plates 1 and 4. Conventionally, an acrylic emulsion has been used for this adhesive. The adhesive component in the acrylic emulsion mixes evenly with the positive electrode mixture to bind particles of manganese dioxide powder or acetylene black powder, and at the same time, functions as a binder to adhere to the surface of the conductive plastic.
また、アクリル系エアルジョンをバインダーとして用い
る場合、粒体との混合を均一にさせるため、微量の分散
剤の添加が必要であり、撹拌する際に混入生成する空気
の泡を除去するために微量の消泡剤の添加が必要であっ
た。こうした本来の電池反応に関与しない物質等の添加
は、薄型電池製造する場合には必要ではあるが、電池反
応を効率よく行なわせるには極力減らさなければならな
いという相反する問題が存在していた。Further, when using the acrylic-based aeration as a binder, it is necessary to add a small amount of a dispersant in order to make the mixing with the granules uniform, and in order to remove air bubbles generated by mixing when stirring, a small amount of a dispersant is required. The addition of antifoam was necessary. The addition of such substances that do not participate in the original battery reaction is necessary in the case of manufacturing a thin battery, but there is a conflicting problem that it must be reduced as much as possible in order to efficiently carry out the battery reaction.
本発明は、より適切な正極合剤のバインダーを選択する
ことにより上記のような欠点を極力抑制し、高品質の平
板型電池を提供するものである。The present invention provides a high-quality flat plate battery by suppressing the above-mentioned defects as much as possible by selecting a more suitable binder for the positive electrode mixture.
本発明を実施例に基づき以下説明する。 The present invention is described below based on examples.
実施例 本発明の平板型電池の構造は、第１図に示した従来の平
板型電池と同一構造を有しているので、第１図を用いて
説明する。Example Since the structure of the flat plate battery of the present invention has the same structure as the conventional flat plate battery shown in FIG. 1, it will be described with reference to FIG.
１及び６は厚さ２０μｍのアルミニウム箔と厚さ５０μ
ｍの導電性プラスチックフィルムとをラミネートしたラ
ミネートフィルムを正極及び負極端子，２ａ及び２ｂは
二酸化マンガンを主体とする正極合剤層，３ａ及び３ｂ
は電解液を含浸させたセパレータ，４は中間電極の厚さ
７５μｍの導電性プラスチックフィルム，５ａ及び５ｂ
は亜鉛末を主体とする負極合剤層である。1 and 6 are 20 μm thick aluminum foil and 50 μm thick
m is a positive electrode and a negative electrode terminal made of a laminated film laminated with a conductive plastic film, and 2a and 2b are positive electrode material mixture layers mainly composed of manganese dioxide, 3a and 3b.
Is a separator impregnated with an electrolytic solution, 4 is a conductive plastic film with an intermediate electrode thickness of 75 μm, 5a and 5b
Is a negative electrode mixture layer mainly composed of zinc powder.
本発明の効果を明確に立証するため、前記正極合剤層２
ａ，２ｂの組成だけを水準として採用し、従来の平板型
電池で用いられている正極合剤組成と、本発明による合
剤組成について平板型電池各１００枚製作した。In order to clearly prove the effect of the present invention, the positive electrode mixture layer 2
Using only the compositions a and 2b as standards, 100 positive electrode batteries were manufactured for each of the positive electrode mixture composition used in the conventional flat plate battery and the mixture composition according to the present invention.
本発明で選定した正極合剤用バインダーはエチレンと酢
酸ビニルの共重合体接着剤をエマルジョンとしたもので
ある（クラレ製ＯＭ−４０００）。このバインダーの簡
単な物性値を示すと以下の通りである。エチレン−酢酸
ビニル共重合体の平均粒径は０．７μｍ，固形含有分５
５％，年度１１００〜１６００ＣＰＳ，比重１．０６，
ＰＨ５〜６．５。The binder for the positive electrode mixture selected in the present invention is an emulsion of a copolymer adhesive of ethylene and vinyl acetate (OM-4000 manufactured by Kuraray). The simple physical properties of this binder are shown below. The ethylene-vinyl acetate copolymer has an average particle size of 0.7 μm and a solid content of 5
5%, year 1100 to 1600 CPS, specific gravity 1.06
PH 5 to 6.5.
実施した正極合剤組成は、二酸化マンガンを８０重量％
で一定にし、アセチレンブラックとバインダーの添加量
で水準を分類した。詳細は第１表に示した。The composition of the positive electrode mixture used was 80% by weight of manganese dioxide.
The level was categorized by the amount of acetylene black and binder added. Details are shown in Table 1.
このような正極合剤組成を有した電池活物質合剤を前記
ラミネート１及び導プラ４に、７６mm×４０mmの大きさ
の長方形状で厚さ０．２mmにスクリーン印刷法で塗布
し、正極活物質層２ａ，２ｂを形成した。負極活物質層
５ａ，５ｂは前記正極活物質層と同様にスクリーン印刷
法で０．１mmの厚さで同一形状に準備した。放電容量
は、正極活物質の容量より負極活物質容量を大きくし、
正極容量律速となるようにした。使用した電解液は、塩
化亜鉛を主体としたもので、予めセパーレータ３ａ，３
ｂに０．３ｇずつ含浸させておいた。このような平板型
電池の各部品を順次合せながら周辺部をヒートシールし
て電池を組立てた。A battery active material mixture having such a positive electrode mixture composition was applied to the laminate 1 and the conductive plastic 4 by a screen printing method in a rectangular shape with a size of 76 mm × 40 mm to a thickness of 0.2 mm to obtain a positive electrode active material. Material layers 2a and 2b were formed. The negative electrode active material layers 5a and 5b were prepared in the same shape with a thickness of 0.1 mm by screen printing as in the positive electrode active material layer. The discharge capacity is such that the negative electrode active material capacity is larger than the positive electrode active material capacity,
The positive electrode capacity was controlled. The electrolyte used was mainly zinc chloride, and the separators 3a, 3
b was impregnated with 0.3 g each. The peripheral parts were heat-sealed while assembling the respective parts of the flat plate type battery in this order to assemble the battery.
これらの電池を３日間エージングさせた後、定抵抗連続
放電（負荷抵抗１００Ω，終止電圧０．９Ｖ）して放電
容量を測定した。その結果を第１表に示した。放電結果
は明らかに異常値と考えられるものを除き、平均値を示
した。After aging these batteries for 3 days, a constant resistance continuous discharge (load resistance 100Ω, final voltage 0.9V) was performed to measure the discharge capacity. The results are shown in Table 1. The discharge results showed average values, except for those which were clearly considered to be abnormal values.
この結果より明らかなことは以下の内容である。 What is clear from this result is the following contents.
（１）バインダーの添加量が５〜１５重量％の範囲で
は、本発明は従来法よりも放電容量が大きくかつ二酸化
マンガンの利用率が良かったこと。(1) In the case where the added amount of the binder is in the range of 5 to 15% by weight, the present invention has a larger discharge capacity and a better utilization rate of manganese dioxide than the conventional method.
（２）バインダーの量が減少し、アセチレンブラックの
添加割合が増大する程、放電利用率が上昇すること。(2) The discharge utilization rate increases as the amount of the binder decreases and the proportion of acetylene black added increases.
（３）第１表には示さなかったが、バインダー添加割合
が５重量％を下回ると、前記正極合剤層が前記導プラ表
面より剥離し易くなり不安定になってしまうこと。(3) Although not shown in Table 1, if the binder addition ratio is less than 5% by weight, the positive electrode mixture layer is likely to be peeled off from the surface of the conductive plastic material and becomes unstable.
（４）バインダー量が１５重量％を越え、アセチレンブ
ラックの添加割合が５重量％を下回ると、急激に放電利
用率が低下してしまうこと。(4) When the amount of the binder exceeds 15% by weight and the amount of acetylene black added is less than 5% by weight, the discharge utilization rate is rapidly reduced.
これらの諸結果は、平板型電池の品質を改良するために
は、正極合剤に添加する結着剤の適正な選択とその結着
剤の添加割合をある範囲の中に規制していくことが重要
であることを示している。とりわけ、結着剤の種類は、
電池反応を阻害することなく、正極合剤のバインダーと
してのみ機能する物質を選定することが理想的な状態で
ある。These results indicate that in order to improve the quality of flat-type batteries, proper selection of the binder to be added to the positive electrode mixture and the addition ratio of the binder should be regulated within a certain range. Indicates that is important. Above all, the type of binder is
The ideal state is to select a substance that functions only as a binder for the positive electrode mixture without inhibiting the battery reaction.
以上説明したように、本発明による効果をまとめると以
下のようになる。As described above, the effects of the present invention can be summarized as follows.
（１）平板型電池の正極合剤中のバインダー材質をエチ
レン−酢酸ビニル共重合エマルジョンとすることによ
り、正極活物質である二酸化マンガンの利用率が向上す
る。(1) By using an ethylene-vinyl acetate copolymer emulsion as the binder material in the positive electrode mixture of a flat battery, the utilization rate of manganese dioxide, which is a positive electrode active material, is improved.
（２）正極合剤中のバインダー添加量を適正に規制する
ことにより、(1)の効果が顕著になると共に平板型電池
製造にも支障をきたさない、正極合剤の導プラへの十分
な密着性が得られる。(2) By properly controlling the amount of binder added to the positive electrode mixture, the effect of (1) becomes remarkable and the positive electrode mixture is sufficiently applied to the conductive plastic so as not to hinder the manufacture of flat plate batteries. Adhesion can be obtained.
（３）製造上手間のかかる分散剤や消泡剤の添加が不要
であり、生産性が向上する。(3) It is not necessary to add a dispersant or an antifoaming agent, which is troublesome in manufacturing, and productivity is improved.
以上により本発明は、同一体積で電池容量を増大させる
ことが可能であり、しいては電池寿命を延長させる等の
メリットが得られる。この意味から工業的価値は大なる
ものがある。As described above, according to the present invention, it is possible to increase the battery capacity with the same volume, and thus it is possible to obtain advantages such as extending the battery life. In this sense, the industrial value is great.
図は本発明に適用した一実施例を示す平板型電池の断面
図である。 １……ラミネートフィルム ２ａ，２ｂ……正極合剤層 ３ａ，３ｂ……セパレータ ４……中間電極の導電性プラスチックフィルム ５ａ，５ｂ……負極合剤層 ６……ラミネートフィルムFIG. 1 is a sectional view of a flat plate type battery showing an embodiment applied to the present invention. 1 ... Laminate film 2a, 2b ... Positive electrode mixture layer 3a, 3b ... Separator 4 ... Intermediate electrode conductive plastic film 5a, 5b ... Negative electrode mixture layer 6 ... Laminate film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松本 研二 東京都台東区台東１丁目５番１号 凸版印 刷株式会社内 (72)発明者 竹田 和俊 東京都江東区亀戸６丁目31番１号 セイコ ー電子工業株式会社内 (72)発明者 福地 高和 東京都江東区亀戸６丁目31番１号 セイコ ー電子工業株式会社内 (56)参考文献 特公 昭57−1100（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Matsumoto 1-5-1, Taito, Taito-ku, Tokyo Within Toppan Printing Co., Ltd. (72) Inventor, Kazutoshi Takeda 6-31-1, Kameido, Koto-ku, Tokyo Seiko -Inside Electronics Industry Co., Ltd. (72) Inventor, Takawa Fukuchi 6-31-1, Kameido, Koto-ku, Tokyo Seiko-Inside Electronics Industry Co., Ltd. (56) References Japanese Patent Publication Sho 57-1100 (JP, B2)
Claims (1)
マンガンを主体とする正極活物質層が形成された正極板
と、亜鉛を主体とする負極活物質層が形成された負極板
とからなる平板型マンガン電池において、 前記正極活物質は、二酸化マンガンと導電材とエチレン
−酢酸ビニル共重合樹脂とからなり、前記エチレン−酢
酸ビニル共重合樹脂がエマルジョンの形で、５．０重量
％〜１５．０重量％加えられていることを特徴とする平
板型電池。1. A positive electrode plate having a conductive film as a core and having a positive electrode active material layer mainly composed of manganese dioxide formed thereon and a negative electrode plate having a negative electrode active material layer mainly composed of zinc formed thereon. In the flat-plate manganese battery, the positive electrode active material comprises manganese dioxide, a conductive material, and an ethylene-vinyl acetate copolymer resin, and the ethylene-vinyl acetate copolymer resin is in the form of an emulsion of 5.0 wt% to A flat plate type battery characterized in that 15.0% by weight is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59211676A JPH063735B2 (en) | 1984-10-09 | 1984-10-09 | Flat plate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59211676A JPH063735B2 (en) | 1984-10-09 | 1984-10-09 | Flat plate battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6191871A JPS6191871A (en) | 1986-05-09 |
| JPH063735B2 true JPH063735B2 (en) | 1994-01-12 |
Family
ID=16609743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59211676A Expired - Lifetime JPH063735B2 (en) | 1984-10-09 | 1984-10-09 | Flat plate battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063735B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010150902A1 (en) * | 2009-06-25 | 2010-12-29 | 住友化学株式会社 | Electrode for lithium ion secondary battery, binder for the electrode, and lithium ion secondary battery equipped with the electrode |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2071621C1 (en) * | 1994-11-29 | 1997-01-10 | Акционерное общество "Элит" | Storage cell electrode manufacturing process |
| JP4461498B2 (en) * | 1997-12-16 | 2010-05-12 | パナソニック株式会社 | Nonaqueous electrolyte secondary battery and negative electrode thereof |
| JP3953327B2 (en) * | 2002-01-21 | 2007-08-08 | Ｎｅｃトーキン株式会社 | Batteries and electric double layer capacitors |
-
1984
- 1984-10-09 JP JP59211676A patent/JPH063735B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010150902A1 (en) * | 2009-06-25 | 2010-12-29 | 住友化学株式会社 | Electrode for lithium ion secondary battery, binder for the electrode, and lithium ion secondary battery equipped with the electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6191871A (en) | 1986-05-09 |
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