JPS58111267A - Nonaqueous electrolyte battery - Google Patents
Nonaqueous electrolyte batteryInfo
- Publication number
- JPS58111267A JPS58111267A JP56211781A JP21178181A JPS58111267A JP S58111267 A JPS58111267 A JP S58111267A JP 56211781 A JP56211781 A JP 56211781A JP 21178181 A JP21178181 A JP 21178181A JP S58111267 A JPS58111267 A JP S58111267A
- Authority
- JP
- Japan
- Prior art keywords
- nonaqueous electrolyte
- positive electrode
- discharge
- active mass
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/502—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese for non-aqueous cells
-
- 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)
- Inorganic Chemistry (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】
本発明はリチウム、ナトリウム勢の軽金属を活物質とす
る負極と、非水電解液と、二酸化マンガンを活物質とす
る正極とを備え九非水電清涼電池に関する本のである。[Detailed Description of the Invention] The present invention is a book related to nine non-hydroelectric refresh batteries comprising a negative electrode using a light metal such as lithium or sodium as an active material, a non-aqueous electrolyte, and a positive electrode using manganese dioxide as an active material. .
非水電解液電池は電池電圧が高い、高エネルギー密度を
有する、自己放電が少ない等の数多くの利点を有し、加
えて正極活物質として二酸化マンガンを用いれば他の正
極活物質に比して安価であシ且安定性に優れるものであ
る。Non-aqueous electrolyte batteries have many advantages such as high battery voltage, high energy density, and low self-discharge.In addition, if manganese dioxide is used as the positive electrode active material, it will be more efficient than other positive electrode active materials. It is inexpensive and has excellent stability.
而して上記したようにこの種電池は数多くの利点を有す
るものの放電の際、放電の進行に伴う放電生成物の増加
によシ内部抵抗が増加し、放電後期においては放電特性
の平担性が維持できず実質的に容量が低減することとな
る。As mentioned above, although this type of battery has many advantages, during discharge, the internal resistance increases due to the increase in discharge products as the discharge progresses, and the discharge characteristics become flat in the late stage of discharge. cannot be maintained, resulting in a substantial reduction in capacity.
本発明は斯る点に鑑みてなされたものであシ、その要旨
とするところは二酸化マンガン正極活物質に酸化コバル
トを添加することによシ放電後期における内部抵抗の増
加を抑制して放電特性の平担性を改善し、以って電池容
量の増大を計るものである。The present invention has been made in view of this point, and its gist is to suppress the increase in internal resistance in the late stage of discharge and improve the discharge characteristics by adding cobalt oxide to the manganese dioxide positive electrode active material. The aim is to improve the flatness of the battery, thereby increasing battery capacity.
以下本発明の実施例について詳述する。Examples of the present invention will be described in detail below.
〔実施例１〕
正極の作成；市販二酸化マンガンを空気中において３５
０〜４５０℃の温度で熱処理したものを活物質とし、こ
の活物質に酸化・コバル）（Ｃｏｄ）を１０重量％混合
した正極合剤と、導電剤としてのアセチレンブラック及
び黒鉛と、結着剤としてのフッ素樹脂粉末とを９０：５
：５の重量比率で混合した混合物を約２トン／−の圧で
加圧成型した發、２５０〜３００℃の温度で熱＃＆環し
て径１５■、厚み１．１■の正極を得る。[Example 1] Preparation of positive electrode; commercially available manganese dioxide was placed in air at 35%
An active material that has been heat-treated at a temperature of 0 to 450°C is used, a positive electrode mixture in which 10% by weight of cobal oxide (Cod) is mixed with this active material, acetylene black and graphite as conductive agents, and a binder. 90:5 with fluororesin powder as
A mixture mixed at a weight ratio of :5 was pressure molded at a pressure of about 2 tons/-, and heated and ringed at a temperature of 250 to 300°C to obtain a positive electrode with a diameter of 15 cm and a thickness of 1.1 cm. .
２ジメトキシエタンとＯ混会有機溶謀に過塩素酸リチウ
ムを溶解しえものであシ、これをポリプロピレン不織布
よ）なるセパレータに食浸して用いた。Lithium perchlorate was dissolved in an organic solvent mixed with dimethoxyethane and O, and this was used by soaking it into a separator made of polypropylene nonwoven fabric.
〔実施例２〕
実施例１における酸化；パルト単独に代えて酸正極及び
電池を作成した。[Example 2] Oxidation in Example 1: An acid positive electrode and a battery were created in place of Palt alone.
又、比較のために酸化コバルトを添加しない従来の二酸
化マンガン正極を用いて比較電池を作成した。In addition, for comparison, a comparative battery was prepared using a conventional manganese dioxide positive electrode to which no cobalt oxide was added.
図はこれら電池の２０℃におけるＳ、６ Ｋ ｎ定負荷
放電時の放電特性及び内部抵抗特性であシ、図中（４）
は実施例１による本発明電池、（Ｂ）は実施例２による
本発明電池、（Ｃ）は比較電池の鳩舎を夫々示す。The figure shows the discharge characteristics and internal resistance characteristics of these batteries when discharging at a constant load of S, 6 Kn at 20°C, (4) in the figure.
(B) shows the invention battery according to Example 1, (C) shows the pigeon coop of the comparative battery.
図より明白なるように本発明電池に依れば放電後期にお
ける内部抵抗の増加が抑制され、放電特性の平担性が改
善されている。As is clear from the figure, according to the battery of the present invention, the increase in internal resistance in the late stage of discharge is suppressed, and the flatness of the discharge characteristics is improved.
この理由を考察するに、正極に添加した酸化コバルトが
二酸化マンガン活物質の放電反応と併行して還元されて
導電性に優れ九金属コバルトが生成するため内部抵抗の
増加が抑制されるものであると考えられる。The reason for this is that the cobalt oxide added to the positive electrode is reduced in parallel with the discharge reaction of the manganese dioxide active material, producing nine-metal cobalt with excellent conductivity, which suppresses the increase in internal resistance. it is conceivable that.
尚、酸化ロバルトは内部抵抗の増加を抑制するための添
加剤であシ、その添加量を多くすると活物質量が少くな
って容量が低減するため、その添加量は活物質量に対し
て約１〜４０重量−が適切である。Note that robalt oxide is an additive to suppress the increase in internal resistance, and if the amount added is increased, the amount of active material decreases and the capacity is reduced, so the amount added is approximately equal to the amount of active material. 1 to 40% by weight is suitable.
上述した如く、本発明は二酸化マンガンを正極活物質と
して用いる非水電解液、電池に関するものであシ、正極
に酸化コバルトを添加することＫよシ内部抵抗の増加を
抑制して放電後期における放電特性の平担性を改善し、
以って電池容量の増大を計るものであシその工業的価値
は極めて大である。As mentioned above, the present invention relates to a non-aqueous electrolyte and a battery that use manganese dioxide as a positive electrode active material, and the addition of cobalt oxide to the positive electrode suppresses the increase in internal resistance and improves discharge in the latter stage of discharge. Improve the flatness of characteristics,
Therefore, it is intended to increase battery capacity, and its industrial value is extremely large.
図面は本発明電池と比較電池との放電特性及び内部抵抗
特性の比較図である・The drawing is a comparison diagram of the discharge characteristics and internal resistance characteristics of the battery of the present invention and a comparative battery.
Claims (1)
極と、非水電湊筐と、二酸化マンガンを活物質とする正
極とを備え、前記正極に酸化コバルトを添加したことを
４１徽とする非水電解液電池。 ■ 酸化コバルトの添加量が正極活物質量に対して約１
〜４０重量−であることを特徴とする特許請求の範Ｓ第
■項記載の非水電解液電池。[Claims] ■ A negative electrode comprising a light metal such as lithium or sodium as an active material, a non-aqueous electrolyte casing, and a positive electrode comprising manganese dioxide as an active material, and cobalt oxide is added to the positive electrode. A non-aqueous electrolyte battery. ■ The amount of cobalt oxide added is approximately 1% relative to the amount of positive electrode active material.
The non-aqueous electrolyte battery according to claim S, item (2), characterized in that the non-aqueous electrolyte battery has a weight of -40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56211781A JPS58111267A (en) | 1981-12-23 | 1981-12-23 | Nonaqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56211781A JPS58111267A (en) | 1981-12-23 | 1981-12-23 | Nonaqueous electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58111267A true JPS58111267A (en) | 1983-07-02 |
Family
ID=16611487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56211781A Pending JPS58111267A (en) | 1981-12-23 | 1981-12-23 | Nonaqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58111267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0815604A1 (en) * | 1995-02-13 | 1998-01-07 | Duracell Inc. | Additives for primary electrochemical cells having manganese dioxide cathodes |
-
1981
- 1981-12-23 JP JP56211781A patent/JPS58111267A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0815604A1 (en) * | 1995-02-13 | 1998-01-07 | Duracell Inc. | Additives for primary electrochemical cells having manganese dioxide cathodes |
| EP0815604A4 (en) * | 1995-02-13 | 1999-12-29 | Duracell Inc | Additives for primary electrochemical cells having manganese dioxide cathodes |
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