JPS6226552B2 - - Google Patents
Info
- Publication number
- JPS6226552B2 JPS6226552B2 JP54165401A JP16540179A JPS6226552B2 JP S6226552 B2 JPS6226552 B2 JP S6226552B2 JP 54165401 A JP54165401 A JP 54165401A JP 16540179 A JP16540179 A JP 16540179A JP S6226552 B2 JPS6226552 B2 JP S6226552B2
- Authority
- JP
- Japan
- Prior art keywords
- agent
- temperature
- active material
- electrode plate
- binder
- 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
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
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】
本発明は電池用電極板の製造法に関するもので
あり、特に非水電解液電池に使用される金属酸化
物を活物質とする正極板に適用して極めて有益な
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an electrode plate for a battery, and is particularly useful when applied to a positive electrode plate using a metal oxide as an active material used in a non-aqueous electrolyte battery. It is.
周知のように非水電解液電池は負極としてリチ
ウムの如く水と極めて反応性に富むものを使用す
るため非水系の電解液を用いることは勿論のこと
正極板も充分脱水されたものでなければならな
い。 As is well known, non-aqueous electrolyte batteries use negative electrodes such as lithium that are highly reactive with water, so it goes without saying that a non-aqueous electrolyte must be used, and the positive electrode plate must also be sufficiently dehydrated. It won't happen.
そこで、従来においては例えば正極活物質とし
て二酸化マンガンを用いてペースト極板を製造す
る場合、この活物質に導電剤、結着剤及び活物質
ペーストを作るためにこの結着剤の融点より低い
温度で分解する粘性剤とを加えてペーストを形成
し、このペーストを極板芯体に塗着、乾燥したる
後、先づ酸化雰囲気下において粘性剤の分解温度
で熱処理し、次いで真空或いは不活性雰囲気下に
おいて結着剤の融点温度で熱処理する方法が提案
されており、フツ素樹脂等の高い融点を有する結
着剤を用いることにより高温処理ができる利点を
備えその効果は大きい。 Therefore, in the past, when manufacturing a paste plate using manganese dioxide as a positive electrode active material, for example, in order to make a conductive agent, a binder, and an active material paste for this active material, a temperature lower than the melting point of this binder was used. A paste is formed by adding a viscous agent that decomposes at A method has been proposed in which heat treatment is carried out at the melting point temperature of the binder in an atmosphere, and the use of a binder having a high melting point such as a fluororesin has the advantage of being able to perform high temperature treatment and is highly effective.
本発明は上記従来法の改良に関するものであ
る。この従来法の問題点は粘性剤の分解温度での
第１の熱処理工程にある。即ち、粘性剤の分解は
酸素との反応であるため活物質として金属酸化物
を用いる場合、この金属酸化物が反応に関与して
活物質の有効量が低減する懸念があり、そのため
粘性剤の分解温度での第１の熱処理工程は酸化雰
囲気下で行うように配慮されているものの、金属
酸化物との反応も併行して起ることである。 The present invention relates to an improvement of the above conventional method. The problem with this conventional method lies in the first heat treatment step at the decomposition temperature of the viscous agent. In other words, when a metal oxide is used as an active material, since the decomposition of a viscous agent is a reaction with oxygen, there is a concern that this metal oxide will participate in the reaction and reduce the effective amount of the active material. Although consideration is given to performing the first heat treatment step at the decomposition temperature in an oxidizing atmosphere, a reaction with the metal oxide also occurs concurrently.
本発明は斯る点に鑑みてなされたものであり、
その要旨とするところは粘性剤の分解温度近傍の
温度で熱分解により酸素を生成する酸素生成剤を
添加することにより、極板製造時、特に粘性剤の
分解温度での第１の熱処理工程における前述の問
題点を解消するものである。 The present invention has been made in view of these points,
The gist of this is that by adding an oxygen generating agent that generates oxygen through thermal decomposition at a temperature close to the decomposition temperature of the viscous agent, it is possible to improve This solves the above-mentioned problems.
以下本発明の実施例を詳述する。 Examples of the present invention will be described in detail below.
二酸化マンガン（活物質）、アセチレンブラツ
ク（導電剤）、４フツ化エチレン−６フツ化プロ
ピレン共重合樹脂（結着剤）及び酸化銀（酸素生
成剤）を90：７：２：１の比率で混合する。この
混合物に濃度10％のポリビニールアルコール水溶
液（粘性剤）を２重量％加え混練してペースト状
とし、このペーストをステンレス網よりなる極板
芯体に塗着、乾燥した後、酸化雰囲気下において
粘性剤の分解温度（約220℃）で30分間熱処理
し、ついで真空或いは不活性雰囲気において結着
剤の融点（約300℃）で90分間熱処理して正極板
とする。 Manganese dioxide (active material), acetylene black (conductive agent), tetrafluoroethylene-hexafluoropropylene copolymer resin (binder) and silver oxide (oxygen generator) in a ratio of 90:7:2:1. Mix. 2% by weight of a 10% polyvinyl alcohol aqueous solution (viscosity agent) was added to this mixture and kneaded to form a paste.The paste was applied to the electrode plate core made of stainless steel mesh, dried, and then placed in an oxidizing atmosphere. Heat treatment is performed for 30 minutes at the decomposition temperature of the viscous agent (approximately 220°C), and then for 90 minutes at the melting point of the binder (approximately 300°C) in a vacuum or inert atmosphere to obtain a positive electrode plate.
尚、粘性剤として本実施例のようにポリビニー
ルアルコール（分解温度約220℃）を用いる場合
には酸素生成剤として酸化クロムも適用しうる。 Note that when polyvinyl alcohol (decomposition temperature: about 220° C.) is used as the viscosity agent as in this example, chromium oxide can also be used as the oxygen generating agent.
図は本発明法により得た正極板を用いリチウム
負極と組合せて作成した非水電解液電池（容量
100mAH）の12KΩ定負荷放電特性を従来電池と
比較したものである。は本発明電池、は従来
電池である。 The figure shows a non-aqueous electrolyte battery (capacity:
100mAH) 12KΩ constant load discharge characteristics compared to conventional batteries. is a battery of the present invention, and is a conventional battery.
図より本発明電池に依れば電池容量が改善され
ていることが解かる。 It can be seen from the figure that the battery capacity of the battery of the present invention is improved.
この理由を考察するに、本発明法においては粘
性剤の分解温度での第１の熱処理工程に際して、
添加した酸素生成剤が活物質である金属酸化物よ
り優先的に粘性剤との反応に関与するため金属酸
化物と粘性剤との反応が阻止され活物質として作
用する金属酸化物の有効量の低下が抑制されるた
めである。 Considering the reason for this, in the method of the present invention, during the first heat treatment step at the decomposition temperature of the viscous agent,
Since the added oxygen generating agent participates in the reaction with the viscosity agent preferentially over the metal oxide which is the active material, the reaction between the metal oxide and the viscosity agent is inhibited and the effective amount of the metal oxide acting as the active material is reduced. This is because the decrease is suppressed.
酸素生成剤として用いた酸化銀は平衡酸素分圧
（Ag2O2Ag＋１／２O2）が高く温度上昇にともなつて
分解し酸素を放出する。又酸化クロムも約200℃
で分解して酸素を放出するものである。 Silver oxide used as an oxygen generating agent has a high equilibrium oxygen partial pressure (Ag 2 O2Ag+1/2O 2 ) and decomposes to release oxygen as the temperature rises. Chromium oxide also has a temperature of about 200℃.
It decomposes and releases oxygen.
上述した如く、本発明による電池用電極板の製
造法によれば、粘性剤の分解温度での第１の熱処
理工程時において活物質となる金属酸化物より優
先的に酸素生成剤が粘性剤との反応に関与して活
物質の有効量の低下を抑制しうるため電池容量の
増大が計れると共に酸素生成剤より酸素を放出す
る反応は発熱を伴うものであるため雰囲気の温度
を高めることになり、粘性剤の分解反応を促進さ
せる効果をもたらし熱処理時間の短縮が計れる等
の利点を奏しその工業的価値は極めて大である。 As described above, according to the method for manufacturing a battery electrode plate according to the present invention, the oxygen generating agent is preferentially converted into a viscosity agent over the metal oxide serving as an active material during the first heat treatment step at the decomposition temperature of the viscosity agent. By participating in the reaction, it is possible to suppress the decrease in the effective amount of the active material, thereby increasing the battery capacity, and since the reaction of releasing oxygen from the oxygen generating agent is accompanied by heat generation, it increases the temperature of the atmosphere. , it has the effect of accelerating the decomposition reaction of the viscous agent and has advantages such as shortening the heat treatment time, and its industrial value is extremely large.
図面は本発明法で得た正極板を用いた電池と従
来電池との放電特性比較図である。
The drawing is a comparison diagram of discharge characteristics between a battery using a positive electrode plate obtained by the method of the present invention and a conventional battery.
Claims (1)
溶液及び該粘性剤の分解温度近傍の温度で熱分解
により酸素を生成する酸素生成剤を加えてペース
トを形成し、このペーストを極板芯体に塗着、乾
燥した後、前記粘性剤の分解温度で熱処理し、つ
いで前記結着剤の融点温度で熱処理することを特
徴とする電池用電極板の製造法。1 A paste is formed by adding a binder, a viscosity agent solution, and an oxygen generating agent that generates oxygen through thermal decomposition at a temperature near the decomposition temperature of the viscosity agent to an active material made of a metal oxide, and this paste is applied to an electrode plate. 1. A method for producing a battery electrode plate, which comprises applying the coating material to a core body, drying it, and then heat-treating it at the decomposition temperature of the viscous agent, and then heat-treating it at the melting point temperature of the binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16540179A JPS5688261A (en) | 1979-12-18 | 1979-12-18 | Manufacture of electrode plate for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16540179A JPS5688261A (en) | 1979-12-18 | 1979-12-18 | Manufacture of electrode plate for battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5688261A JPS5688261A (en) | 1981-07-17 |
| JPS6226552B2 true JPS6226552B2 (en) | 1987-06-09 |
Family
ID=15811700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16540179A Granted JPS5688261A (en) | 1979-12-18 | 1979-12-18 | Manufacture of electrode plate for battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5688261A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62200659A (en) * | 1986-02-27 | 1987-09-04 | Toshiba Battery Co Ltd | Manufacturing method of positive electrode for non-aqueous electrolyte battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5446344A (en) * | 1977-09-20 | 1979-04-12 | Sanyo Electric Co | Method of producing positive plate for nonnaqueous battery |
| JPS5475534A (en) * | 1977-11-30 | 1979-06-16 | Hitachi Ltd | Cell |
-
1979
- 1979-12-18 JP JP16540179A patent/JPS5688261A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5688261A (en) | 1981-07-17 |
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