JPS6264063A - Nonaqueous electrolyte battery - Google Patents
Nonaqueous electrolyte batteryInfo
- Publication number
- JPS6264063A JPS6264063A JP20485485A JP20485485A JPS6264063A JP S6264063 A JPS6264063 A JP S6264063A JP 20485485 A JP20485485 A JP 20485485A JP 20485485 A JP20485485 A JP 20485485A JP S6264063 A JPS6264063 A JP S6264063A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- binder
- battery
- cupric oxide
- 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
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
げ)産業上の利用分野
本発明は正極活物質として酸化第2銅を用−る非水電解
液電池C;係り、特に正極の改良C;関するものである
。DETAILED DESCRIPTION OF THE INVENTION G) Industrial Field of Application The present invention relates to a non-aqueous electrolyte battery C using cupric oxide as a positive electrode active material, and more particularly to an improvement in the positive electrode.
(→従来の技術
非水電解液電池は高エネルギー密度會有し、且自己放電
が少ないという利点のため区二注目されており、その代
表的なものとして特公昭57−4064号公報に開示さ
れている二酸化マンガン−リチウム系非水電解液電池が
ある。(→Conventional technology) Non-aqueous electrolyte batteries have attracted much attention due to their advantages of high energy density and low self-discharge, and a representative example of this is disclosed in Japanese Patent Publication No. 57-4064. There is a manganese dioxide-lithium non-aqueous electrolyte battery.
ところで、この種電池l二用いる正極は一般C二は活物
質に導電剤及び結着剤を添加混合した正極合剤を加圧成
型して作成している。ここで結着剤は電極の機械的強度
の面から不可欠なるものの、電池反応の面から云えば電
子の移動を阻害し電導度を低下させるので好ましくない
ものである。By the way, the positive electrode used in this type of battery C2 is generally prepared by pressure molding a positive electrode mixture prepared by adding and mixing an active material with a conductive agent and a binder. Although the binder is indispensable from the viewpoint of mechanical strength of the electrode, it is undesirable from the viewpoint of battery reaction since it inhibits the movement of electrons and lowers the conductivity.
前記先行技術(特公昭57−4064号公報)によれば
正極活物質として二酸化マンガンを用い4・O
る場合、結着剤は亀重量憾添加されている。According to the prior art (Japanese Patent Publication No. 57-4064), when manganese dioxide is used as the positive electrode active material, a small amount of the binder is added.
(ハ)発明が解決しようとする問題点
本発明は酸化第2銅を正極活物質とする非水電解液電池
の電池特性の改善を目的とする。(c) Problems to be Solved by the Invention The present invention aims to improve the battery characteristics of a non-aqueous electrolyte battery using cupric oxide as a positive electrode active material.
に)問題点を解決するための手段
本発f!Aは酸化第2銅を活物質とする正極に結着剤と
してフッ素樹脂を05〜2.0重量%添加したことt−
特徴とする。) The method to solve the problem was originally f! A indicates that 05 to 2.0% by weight of fluororesin is added as a binder to a positive electrode containing cupric oxide as an active material.t-
Features.
(ホ)作 用
本発明C二よれば正極の機械的強度を低下させることな
く内部抵抗の増大全抑制することができ電池特性の改善
が計れる。(E) Effect According to the present invention C2, the increase in internal resistance can be completely suppressed without reducing the mechanical strength of the positive electrode, and the battery characteristics can be improved.
(へ)実 施 例 以下本発明の実施倒置;ついて詳述する。(f) Implementation example The implementation of the present invention will be described in detail below.
市販%級の酸化第2銅′89重″i%c導寛剤としての
黒鉛10重量幅及び結着剤としてのフッ素樹脂粉末1.
0重量%を加え混合した後、この正極合剤を約2トン/
−の圧力で加圧成型して径15.On1厚み1.1uの
成型体を得、この成型体t200〜300℃の温度で熱
処理して正極とする。Commercially available % cupric oxide '89 weight'' i%c graphite as a relaxing agent and fluororesin powder as a binder 1.
After adding 0% by weight and mixing, this positive electrode mixture was mixed at a rate of about 2 tons/
- Pressure molded at a pressure of 15. A molded body having a thickness of 1.1 u is obtained, and this molded body is heat-treated at a temperature of t200 to 300°C to form a positive electrode.
負極はリチウム板を約Q、 (、mgの厚み6二圧延し
、このリチウム圧延板を径15.O1jMに打抜いたも
の’に用いた。電解液はプロピレンカーボネートと1゜
2ジメトキシエタンとの混合溶媒C;過塩素酸すチウム
t1モル/l溶解させたものを用い、又セノくレータと
してポリプロピレン不織布を用いて直径20.011、
厚み2.5 a OJ本発Il!11電池(A)’(e
作成した0
尚、比較のためにフッ素樹脂を添加せず、酸化第2銅9
0重蓋鳴C二導電剤としての黒鉛10重量%t−添加混
合したるもの全正極合剤とし、その他は本発明と同様の
第1の比較電池(B)、及び酸化第2銅85重量%C;
結着剤としてのフッ素樹脂5重量%、導電剤としての黒
鉛10重量%全大々添加混合したるものrLE極合剤と
しその他は本発明と同様の第2の比較電池(C) 全作
成した。For the negative electrode, a lithium plate was rolled to a thickness of about Q, (mg), and this lithium rolled plate was punched out to a diameter of 15.0 mm.The electrolyte was a mixture of propylene carbonate and 1°2 dimethoxyethane. Mixed solvent C: using a solution of 1 mol/l of stium perchlorate, and using a polypropylene nonwoven fabric as a cenolator, with a diameter of 20.011 mm,
Thickness 2.5a OJ original Il! 11 Battery (A)' (e
For comparison, cupric oxide 9 was prepared without adding fluororesin.
The first comparison battery (B), which was the same as the present invention except that 10% by weight of graphite as a conductive agent and mixed with t- was used as the total positive electrode mixture, and 85% by weight of cupric oxide. %C;
5% by weight of fluororesin as a binder and 10% by weight of graphite as a conductive agent were all added and mixed rLE polar mixture was used and the rest was the same as the present invention Second comparative battery (C) All were prepared. .
第1図はこれらの電池を温度60℃で6ケ月保存した後
、温度20℃における1にΩ負荷での放ir:特性全示
し、′dc2図は温度60℃、湿度90%の条件下で保
存した時の内部抵抗の経時変化を示す。Figure 1 shows all the characteristics of these batteries after being stored at 60°C for 6 months, with a load of 1Ω at 20°C, and Figure 2 shows the characteristics of these batteries under conditions of 60°C and 90% humidity. It shows the change in internal resistance over time during storage.
又第6図、第4図及び第5図は結着剤(フッ素樹脂)の
添加量に対する放電容量、電池膨れ及び内部抵抗の関係
を示す。Further, FIGS. 6, 4, and 5 show the relationship between the amount of binder (fluororesin) added and the discharge capacity, battery swelling, and internal resistance.
@1図及び第2図から本発明電池(A)は比較電池CB
)(C) (ニルして電池特性が改善されているのがわ
かる。@ From Figures 1 and 2, the present invention battery (A) is the comparison battery CB.
) (C) (It can be seen that the battery characteristics have been improved.
この理由を考察するに、酸化第2銅は二酸化マンガンC
ニルして成型性が良好であるため、結着剤の添加量全滅
じても機械的強度?損うことがないと共【二、結着剤の
添加量が減じられるため正極の電導度が向上し内部抵抗
の上昇が抑制されることに起因すると考えられる。Considering the reason for this, cupric oxide is manganese dioxide C
Because it has good moldability, it maintains mechanical strength even if the amount of binder added is completely destroyed. This is thought to be due to the fact that since the amount of binder added is reduced, the conductivity of the positive electrode is improved and the increase in internal resistance is suppressed.
又、添〃口瀘としては第3図乃至第5図からα5〜2.
0重量幅の範囲が好ましいことがわかる。In addition, α5-2.
It can be seen that the range of 0 weight width is preferable.
(ト)発明の効果
上述した如く、酸化第2銅金主活物質とする正極を用い
た非水電s*’vit池≦二おいて、正極g:添加する
結着剤としてのフッ素樹脂の添加量f!:o、 s〜2
.0重量%とすること(二より、!池特性を改善しうる
tのであり、その工業的価値は極めて大である。(g) Effects of the invention As mentioned above, in a non-aqueous battery using a positive electrode mainly made of cupric oxide gold active material, positive electrode g: addition of fluororesin as a binder. Amount f! :o, s~2
.. Setting it to 0% by weight (secondly, it is possible to improve the pond properties), and its industrial value is extremely large.
第1図は温度60℃で6ケ月保存後、温度20℃で1に
Ω負荷での’IE池の放電特性図、第2図は温度60℃
、湿度90%f二おける電池の内部抵抗の経時変化を示
す図、第6図乃至iXS図は結着剤(フッ素樹脂)の添
加量C二対する放電容量、電池膨れ及び内部抵抗の関係
會示す図である。
(A)・・・本発明電池、CB)(C)・・・比較電池
。Figure 1 shows the discharge characteristics of an 'IE cell at a temperature of 20°C and a 1Ω load after storage for 6 months at a temperature of 60°C.
Figures 6 to iXS diagrams show the relationship between discharge capacity, battery swelling, and internal resistance with respect to the amount of binder (fluororesin) added. It is a diagram. (A)...Battery of the present invention, CB) (C)...Comparison battery.
Claims (1)
いはリチウム合金を活物質とする負極と、非水電解液と
を備えるものであって、前記正極に結着剤としてフッ素
樹脂を0.5〜2.0重量%添加したことを特徴とする
非水電解液電池。(1) A positive electrode containing cupric oxide as the main active material, a negative electrode containing lithium or a lithium alloy as the active material, and a non-aqueous electrolyte, the positive electrode containing a fluororesin as a binder. A nonaqueous electrolyte battery characterized in that 0.5 to 2.0% by weight is added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20485485A JPS6264063A (en) | 1985-09-17 | 1985-09-17 | Nonaqueous electrolyte battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20485485A JPS6264063A (en) | 1985-09-17 | 1985-09-17 | Nonaqueous electrolyte battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6264063A true JPS6264063A (en) | 1987-03-20 |
Family
ID=16497494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20485485A Pending JPS6264063A (en) | 1985-09-17 | 1985-09-17 | Nonaqueous electrolyte battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6264063A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55154071A (en) * | 1979-05-17 | 1980-12-01 | Hitachi Maxell Ltd | Non-aqueous electrolyte cell |
-
1985
- 1985-09-17 JP JP20485485A patent/JPS6264063A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55154071A (en) * | 1979-05-17 | 1980-12-01 | Hitachi Maxell Ltd | Non-aqueous electrolyte cell |
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