JPS63124364A - Nonaqueous electrolyte battery - Google Patents

Nonaqueous electrolyte battery

Info

Publication number
JPS63124364A
JPS63124364A JP61270734A JP27073486A JPS63124364A JP S63124364 A JPS63124364 A JP S63124364A JP 61270734 A JP61270734 A JP 61270734A JP 27073486 A JP27073486 A JP 27073486A JP S63124364 A JPS63124364 A JP S63124364A
Authority
JP
Japan
Prior art keywords
lithium
battery
positive electrode
active material
tin
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
Application number
JP61270734A
Other languages
Japanese (ja)
Other versions
JPH0665029B2 (en
Inventor
Chikanori Ishibashi
石橋 親典
Kazuo Moriwaki
森脇 和郎
Sanehiro Furukawa
古川 修弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP61270734A priority Critical patent/JPH0665029B2/en
Publication of JPS63124364A publication Critical patent/JPS63124364A/en
Publication of JPH0665029B2 publication Critical patent/JPH0665029B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/48Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00Primary cells; Manufacture thereof
    • H01M6/14Cells with non-aqueous electrolyte
    • H01M6/16Cells with non-aqueous electrolyte with organic electrolyte

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

PURPOSE:To improve the high rate discharge performance and the storage performance of a nonaqueous electrolyte battery in which cupric oxide is used as positive active material and lithium or lithium alloy is used as negative active material by adding a composite sulfide of copper and tin to a positive electrode. CONSTITUTION:20 wt.% CuSnS, 5 wt.% graphite serving as conductor, and 5 wt.% fluorine resin powder serving as binder are added to 70 wt.% cupric oxide, and the mixture is molded at a pressure of about 2 ton/cm<2> in a 15mm diameter, 1.1mm thick molding. The molding is heated at 200-300 deg.C to form a positive electrode 1. A lithium plate is rolled in an about 0.6mm thick sheet, then blanked in a 15mm diameter disk to form a negative electrode 4. An electrolyte is prepared by dissolving lithium perchlorate in a mixture solvent of propylene carbonate and 1,2-dimethoxyethane in a ratio of 1 mol/l.

Description

【発明の詳細な説明】 イ、産業上の利用分野 本発明は酸化第二銅を正極活物質とする非水電解液電池
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a non-aqueous electrolyte battery using cupric oxide as a positive electrode active material.

口、従来の技術 酸化第二銅を正極活物質とし、リチウム又はリチウム合
金を負極活物質とする非水電解液電池は例えば特公昭5
9−33935号公報で公知であり、その電池電圧は約
1.4V程度であるので電子機器の電源に汎用されてい
るアルカリ乾電池、水銀電池或いは銀電池等と互換使用
しうる利点がある。
Conventional technology A non-aqueous electrolyte battery using cupric oxide as a positive electrode active material and lithium or a lithium alloy as a negative electrode active material was developed, for example, by
It is known from Japanese Patent No. 9-33935, and since its battery voltage is about 1.4 V, it has the advantage that it can be used interchangeably with alkaline dry batteries, mercury batteries, silver batteries, etc. that are commonly used as power sources for electronic devices.

ところが、この種電池は高率放電において、初期の電池
電圧が落込む、又保存時において電池内に侵入する水分
によってリチウム負極の表面に不働態膜が生成し、内部
抵抗が増大して電池性能が低下すると云った問題がある
However, in this type of battery, the initial battery voltage drops during high-rate discharge, and a passive film is formed on the surface of the lithium negative electrode due to moisture entering the battery during storage, increasing internal resistance and impairing battery performance. There is a problem that the amount of energy decreases.

ハ、発明が解決しようとする問題点 零発+3Aは酸化第二銅を正極活物質とし、リチウム又
はリチウム合金を負極活物質とする非水電解液電池の高
率放電特性及び保存特性の改善を計るものである。
C. Problems to be Solved by the Invention Zero-fire +3A aims to improve the high rate discharge characteristics and storage characteristics of a non-aqueous electrolyte battery that uses cupric oxide as a positive electrode active material and lithium or a lithium alloy as a negative electrode active material. It is something to measure.

二、問題点を解決するだめの手段 本発明は酸化第二銅を活物質とする正極VCjIii1
と錫の複合硫化物を添加したこと全要旨とする。
2. Means for solving the problems The present invention provides a positive electrode VCjIiii1 using cupric oxide as an active material.
The entire summary is that a composite sulfide of tin and tin was added.

尚、銅と錫の複合硫化物の添加量は正極に対して5〜4
0重量%の範囲が好ましい。
In addition, the amount of the composite sulfide of copper and tin added is 5 to 4 to the positive electrode.
A range of 0% by weight is preferred.

又、銅と錫の複合硫化物はCuxSnyszで示される
ものであって、特にCu5nS2、Cu5n2S4或い
はCu25nS4が好ましい。
Further, the composite sulfide of copper and tin is represented by CuxSnysz, and Cu5nS2, Cu5n2S4 or Cu25nS4 is particularly preferred.

ホ、作 用 酸化第二銅のみ全正極活物質とした場合、高率放電(l
kΩ負荷)で約1.25Vの作動電圧全示し、且放電初
期に電圧の落込みが認められる。
E. Effect When only cupric oxide is used as the entire positive electrode active material, high rate discharge (l
The total operating voltage was approximately 1.25 V under a kΩ load, and a drop in voltage was observed at the beginning of discharge.

一方銅と錫の複合硫化物のみを正極活物質とした場合に
は高率放電で平担性は悪いものの放電初期に約1.4V
の作#電圧を示し、且放電初期の電圧落込みは認められ
ない。但し重量当りの理論エネルギーはリチウム負極と
組合せた場合、酸化第二銅が570 mAh/Pである
のに対し銅と錫の複合硫化物は約500 mAh/#で
あり、放電容量について云えば酸化第二銅の方が大きい
On the other hand, when only a composite sulfide of copper and tin is used as the positive electrode active material, the discharge rate is high and the flatness is poor, but the initial discharge voltage is about 1.4V.
shows the operating voltage, and no voltage drop is observed at the beginning of discharge. However, when combined with a lithium negative electrode, the theoretical energy per weight is 570 mAh/P for cupric oxide, while the composite sulfide of copper and tin is about 500 mAh/P. Cupric is larger.

依って、酸化第二銅と、銅と錫の複合硫化物とを併用す
ることにより、放電初期の電圧の落込みがなく、且放電
容量も比較的大きい電池を得ることができる。
Therefore, by using cupric oxide and a composite sulfide of copper and tin together, it is possible to obtain a battery that does not have a drop in voltage at the initial stage of discharge and has a relatively large discharge capacity.

又、銅と錫の複合硫化物の放電によって錫が生成し、こ
の錫がリチウム負極と反応して負極表面に錫或いは錫−
リチウム合金の被膜が形成され、リチウムと水との反応
による不働恵膜の生成全阻止し内部抵抗の増大が抑制さ
れる。
In addition, tin is generated by the discharge of a composite sulfide of copper and tin, and this tin reacts with the lithium negative electrode to form tin or tin-tin on the negative electrode surface.
A lithium alloy film is formed, completely inhibiting the formation of a passive film due to the reaction between lithium and water, and suppressing an increase in internal resistance.

へ、実施例 実施例1 市販特級の酸化第二銅70重量優に、添加剤としてのG
uSn8220重量、導電剤としての黒鉛5重量%及び
結着剤としてのフッ素樹脂粉末5重量96を加えて混合
した後、この混合物全約2トン/ cm2の圧力で加圧
成型して径15.0mm、厚み1.1 mmの成型体金
部、この成型体を200〜300℃の温度で熱処理して
正極とする。
Examples Example 1 Commercially available special grade cupric oxide 70% G as an additive
After adding and mixing 8220 uSn, 5% by weight of graphite as a conductive agent, and 5% by weight of fluororesin powder as a binder, the mixture was press-molded at a pressure of about 2 tons/cm2 to a diameter of 15.0 mm. , a metal part of the molded body having a thickness of 1.1 mm, and this molded body is heat-treated at a temperature of 200 to 300°C to form a positive electrode.

負極はリチウム板を約0.6mmの厚みに圧延しこのリ
チウム圧延板を径15.0mmに打抜いたものである。
The negative electrode was made by rolling a lithium plate to a thickness of about 0.6 mm, and punching out the rolled lithium plate to a diameter of 15.0 mm.

電解液はプロピレンカーボネートと1゜2ジメトキシエ
タンとの混合溶媒に過塩素酸リチウムを1e、TI//
l溶解させ念ものを用い、又セパレータはポリプロピレ
ン不織布を用いて直径20゜0mm、厚み2.5 mm
の本発明電池(At)(i7作成した。
The electrolyte is 1e of lithium perchlorate in a mixed solvent of propylene carbonate and 1゜2 dimethoxyethane, TI//
l Dissolved material was used, and the separator was made of polypropylene nonwoven fabric with a diameter of 20°0 mm and a thickness of 2.5 mm.
A battery of the present invention (At) (i7) was prepared.

第1図は本発明電池の縦断面図を示し、本発明の要旨と
する正極+11は正極缶(2)の内底面に固着せる正極
集電体(3)に圧接されている。一方すチウム負極+4
11″i負極缶(6)の内底面に固着せる負極集電体;
6)に圧着されている。(7)はセパレータ、(8)は
絶縁バッキングである。
FIG. 1 shows a longitudinal sectional view of a battery according to the present invention, in which a positive electrode +11, which is the gist of the present invention, is pressed into contact with a positive electrode current collector (3) fixed to the inner bottom surface of a positive electrode can (2). On the other hand, lithium negative electrode +4
11″i negative electrode current collector fixed to the inner bottom surface of the negative electrode can (6);
6) is crimped. (7) is a separator, and (8) is an insulating backing.

実 施 例2 添加剤としてCu5nS2の代わりにCu5n2S4’
に用いることを除いて他l−j実施例1と同様の本発明
電池(A2)i作成した。
Example 2 Cu5n2S4' instead of Cu5nS2 as an additive
A battery of the present invention (A2) was prepared in the same manner as in Example 1 except that it was used for the following.

実 施 例3 添加剤としてCu5nS2の代わりKCu2Sn84を
用いることを除いて他は実施例1と同様の本発明電池(
A8)を作成した。
Example 3 A battery of the present invention was prepared as in Example 1 except that KCu2Sn84 was used instead of Cu5nS2 as an additive.
A8) was created.

比較例l Cu5nS2を添加せず酸化第二銅単独を活物質とする
ことを除いて他は実施例1と同様の比較電池(B)を作
成した。
Comparative Example 1 A comparative battery (B) was prepared in the same manner as in Example 1 except that Cu5nS2 was not added and cupric oxide alone was used as the active material.

比較例2 酸化第二銅を用いずCu5nS2単独を活物質とするこ
七を除いて他は実施例1と同様の比較電池(Qを作成し
た。
Comparative Example 2 A comparative battery (Q) was prepared in the same manner as in Example 1 except that cupric oxide was not used and Cu5nS2 alone was used as the active material.

尚、本発明電池及び比較電池はいずれも電池組立後、開
路電圧を下げる目的で電池容量の約496を予じめ放電
して完成電池とした。
In addition, after the battery of the present invention and the comparative battery were assembled, the battery was pre-discharged to about 496% of the battery capacity for the purpose of lowering the open circuit voltage to obtain a completed battery.

第2図は本発明電池(A1)と比較電池(B)(C)と
の温度25℃、負荷1に、Qにおける放電特性比較図を
示し、第2図より本発明電池(A1)は比較電池(B)
(C)に比して放電初期の電圧落込みがなく、且高容量
を有することがわかる。
Figure 2 shows a comparison diagram of the discharge characteristics of the battery of the present invention (A1) and comparative batteries (B) and (C) at a temperature of 25°C and a load of 1. Battery (B)
It can be seen that, compared to (C), there is no voltage drop at the initial stage of discharge and it has a high capacity.

第3図は銅と錫の複合硫化物の添加量と、電池の放電容
量との関係全示し、添加量としては正極に対して5〜4
0重量%の範囲が好ましいことがわかる。
Figure 3 shows the relationship between the amount of copper and tin composite sulfide added and the discharge capacity of the battery.
It can be seen that a range of 0% by weight is preferable.

又、第4図は本発明電池(A1)(A2 )(A8)と
比較電池(B)とを温度60℃、湿度90%で保存した
時の内部抵抗の径時変化を示す。第4図より本発明電池
は高温、高湿下で保存しても内部抵抗の増大は抑制され
ているのがわかる。
Moreover, FIG. 4 shows the change in internal resistance over time when the batteries of the present invention (A1, A2, A8) and the comparative battery (B) were stored at a temperature of 60° C. and a humidity of 90%. From FIG. 4, it can be seen that the increase in internal resistance of the battery of the present invention is suppressed even when stored at high temperature and high humidity.

ト、発明の効果 上述した如く、リチウム又1tiリチウム合金を活物質
とする負極と、非水電解液と、酸化第二銅全活物質とす
る正極とを備えた非水電解液電池において、正極に銅と
錫の複合硫化物を添加することにより高率放電特性及び
保存特性を改善することができるものであり、この種電
池の用途拡大に資するところ極めて犬である。
G. Effects of the Invention As described above, in a nonaqueous electrolyte battery comprising a negative electrode made of lithium or a 1ti lithium alloy as an active material, a nonaqueous electrolyte, and a positive electrode made entirely of cupric oxide as an active material, the positive electrode By adding a composite sulfide of copper and tin to the battery, the high rate discharge characteristics and storage characteristics can be improved, which is extremely helpful in expanding the uses of this type of battery.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明電池の半断面図、第2図は電池の高率放
電特性図、第3図は銅と錫の複合硫化物の添加量と電池
の放電容量との関係を示す図、第4図は電池の内部抵抗
の経時変化を示す図である。 (1)・・・正極、(2)・・・正極缶、(3)・・・
正極集電体、(4)・・・負極、(6)・・・負極缶、
(6)・・・負極集電体、(7)・・・セパレータ、(
8)・・・絶縁バッキング。
FIG. 1 is a half-sectional view of the battery of the present invention, FIG. 2 is a high rate discharge characteristic diagram of the battery, and FIG. 3 is a diagram showing the relationship between the amount of copper and tin composite sulfide added and the discharge capacity of the battery. FIG. 4 is a diagram showing the change over time in the internal resistance of the battery. (1)...Positive electrode, (2)...Positive electrode can, (3)...
Positive electrode current collector, (4)... negative electrode, (6)... negative electrode can,
(6)...Negative electrode current collector, (7)...Separator, (
8)...Insulating backing.

Claims (2)

【特許請求の範囲】[Claims] (1)リチウム又はリチウム合金を活物質とする負極と
、非水電解液と、酸化第二銅を活物質とする正極とを備
えるものであって、前記正極に銅と錫の複合硫化物を添
加したことを特徴とする非水電解液電池。
(1) A device comprising a negative electrode using lithium or a lithium alloy as an active material, a nonaqueous electrolyte, and a positive electrode using cupric oxide as an active material, the positive electrode comprising a composite sulfide of copper and tin. A non-aqueous electrolyte battery characterized by the addition of additives.
(2)前記複合硫化物の添加量が正極に対して5〜40
重量%であることを特徴とする特許請求の範囲第(1)
項記載の非水電解液電池。
(2) The amount of the composite sulfide added is 5 to 40% relative to the positive electrode.
Claim No. (1) characterized in that it is % by weight.
The non-aqueous electrolyte battery described in .
JP61270734A 1986-11-13 1986-11-13 Non-aqueous electrolyte battery Expired - Fee Related JPH0665029B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61270734A JPH0665029B2 (en) 1986-11-13 1986-11-13 Non-aqueous electrolyte battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61270734A JPH0665029B2 (en) 1986-11-13 1986-11-13 Non-aqueous electrolyte battery

Publications (2)

Publication Number Publication Date
JPS63124364A true JPS63124364A (en) 1988-05-27
JPH0665029B2 JPH0665029B2 (en) 1994-08-22

Family

ID=17490219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61270734A Expired - Fee Related JPH0665029B2 (en) 1986-11-13 1986-11-13 Non-aqueous electrolyte battery

Country Status (1)

Country Link
JP (1) JPH0665029B2 (en)

Also Published As

Publication number Publication date
JPH0665029B2 (en) 1994-08-22

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