JPS59860A - Nonaqueous electrolyte cell - Google Patents
Nonaqueous electrolyte cellInfo
- Publication number
- JPS59860A JPS59860A JP57110155A JP11015582A JPS59860A JP S59860 A JPS59860 A JP S59860A JP 57110155 A JP57110155 A JP 57110155A JP 11015582 A JP11015582 A JP 11015582A JP S59860 A JPS59860 A JP S59860A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- glass fiber
- thin film
- fiber separator
- battery
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/454—Separators, membranes or diaphragms characterised by the material having a layered structure comprising a non-fibrous layer and a fibrous layer superimposed on one another
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
-
- 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)
- Cell Separators (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は例えばリチウムの如き′軽金属を活物質とする
負極と、金属の酸化物、硫化物或いはハロゲン炭素化物
等を活物質とする正極と、非水系の電解液とを備えた非
水電解液電池に関するものである。Detailed Description of the Invention Technical Field The present invention relates to a negative electrode using a light metal such as lithium as an active material, a positive electrode using a metal oxide, sulfide, or halogen carbonide as an active material, and a non-aqueous electrolyzer. The present invention relates to a non-aqueous electrolyte battery equipped with a liquid.
背 景 技 術
このｆｉ！池の具体例としては正極活物質として、二酸
化マンガン、酸化第二銅、フッ化炭素及びクロム酸銀を
用いるものが提案され且実用化に至りている。Background technology This fi! As a specific example of a positive electrode active material, one using manganese dioxide, cupric oxide, carbon fluoride, and silver chromate has been proposed and put into practical use.
さて、このｌ’４［池においては電解液量が不足すると
内部抵抗が増大して電池電圧の低下を来すものであり、
特にこの現象は放電末期において顕著である。従ってこ
のような不都合を解消するだめには保液性の優れた七パ
レータ部材が望まれる。Now, in this l'4 cell, when the amount of electrolyte is insufficient, the internal resistance increases and the battery voltage decreases.
This phenomenon is particularly noticeable at the end of discharge. Therefore, in order to eliminate such inconveniences, a seven-parator member with excellent liquid retention properties is desired.
一般に５この種電池においてはセパレータ部材としてポ
リプロピレン不織布が用いられているが、その保液性は
充分満足し得友るものではない。Generally, polypropylene nonwoven fabric is used as a separator member in this type of battery, but its liquid retention properties are not completely satisfactory.
一方、近年においては密閉型鉛蓄電池に極めて保液性の
高いガラス繊維セパレータが適用されて、いる（特公昭
５２−４００１２号公報参照）。On the other hand, in recent years, glass fiber separators with extremely high liquid retention properties have been applied to sealed lead-acid batteries (see Japanese Patent Publication No. 52-40012).
そこで、本発明者等は上記ガラス繊維セパレータを非水
電解液電池に適用して実験検討したところ、；ｊポリプ
ロピレン不織布の場合に比して保液量が増大して電池特
性が改善されることを確認しだが、一方新たな問題点を
見出した。Therefore, the present inventors applied the above-mentioned glass fiber separator to a non-aqueous electrolyte battery and conducted an experimental study, and found that; compared with the case of polypropylene nonwoven fabric, the amount of liquid retained increases and the battery characteristics are improved. However, we discovered a new problem.
即ち、負極活物質としてのリチウムとガラス繊維とが化
学反応を起し電池特性が劣下することである。その主た
る反応はリチウムイオンとガラス繊維を構成するナトリ
ウムのイオンとが置換ジリチウム負極表面にナトリウム
が析出するものと考見られ、その結Ｗとして内部抵抗が
増大して電池特性が劣下すると考えられる。That is, lithium as a negative electrode active material and glass fiber cause a chemical reaction, resulting in deterioration of battery characteristics. The main reaction is thought to be that lithium ions and sodium ions constituting the glass fiber precipitate sodium on the surface of the substituted dilithium negative electrode, and as a result of this, internal resistance increases and battery characteristics deteriorate. .
発明の開示
本発明は十へ１．問題点を解消すべくなされたものであ
り、その要旨とするところは、少くとも負極とガラス繊
維セパレータとの間に微孔性薄膜を配設する点にあり、
負極とガラス繊維セパレータとが直接接するのを阻１に
して反応を抑制することによシ、ガラス繊維セパレータ
の使用に、よる利点のみ生かし、欠点を抑制してこの種
電池の特性の向−トを計るものである。DISCLOSURE OF THE INVENTION The present invention is as follows:1. This was done to solve the problem, and its gist is that at least a microporous thin film is provided between the negative electrode and the glass fiber separator.
By preventing direct contact between the negative electrode and the glass fiber separator and suppressing the reaction, it is possible to take advantage of the advantages of using the glass fiber separator and suppress its disadvantages, thereby improving the characteristics of this type of battery. It measures the
発明を実施するための最良の形態 以−ト本発明の一実施例を図面に基づき説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will now be described based on the drawings.
（］）は酸化第二銅を活物質とする正極であって、４電
剤及び結着剤を含む正極合剤を正極集電リング（２）内
に加圧成型したものであり、正極端子兼用外装缶（３）
の内底面にａ、を設されている。（４）はリチウム圧延
板よりなる負極であって、負極端子兼用封口蓋（５）の
内底面に負極集電体（６）を介して圧着されている。（
７）はＩＥ負極間に介在されたガラス繊維セパレータ、
（８）は絶縁バッキングである。( ) is a positive electrode that uses cupric oxide as an active material, and is a positive electrode mixture containing a 4-electrode agent and a binder that is pressure-molded inside the positive electrode current collector ring (2). Dual-purpose exterior can (3)
A is provided on the inner bottom surface. (4) is a negative electrode made of a rolled lithium plate, which is crimped to the inner bottom surface of the sealing lid (5) which also serves as a negative electrode terminal via a negative electrode current collector (6). (
7) is a glass fiber separator interposed between the IE negative electrodes;
(8) is an insulating backing.
而して（９）は負極（４）とガラス繊維セパレータ（７
）との間、及び°正極（１）とガラス繊維セパレータ（
７）トの而に配設された微孔性薄膜である。この微孔性
薄膜としてはイオンを透過しうる数μ以下の微細孔ヲ有
するポリプロピレン薄膜或いはポリエチレン薄膜が適し
、その−例としては商品名“ジ：Ｌ″ｙガード”「ポリ
プヲスチックス株式会社」が挙げられる。Therefore, (9) is a negative electrode (4) and a glass fiber separator (7).
), and between the positive electrode (1) and the glass fiber separator (
7) A microporous thin film disposed between the top and bottom. As this microporous thin film, a polypropylene thin film or a polyethylene thin film having micropores of a few microns or less that are permeable to ions is suitable, examples of which include products under the trade name "L"y Guard" and "Polypstics Co., Ltd." can be mentioned.
上記せる構造の本発明電池（Ａ）の効果を調べるために
、微孔性薄膜を用いず且セパレータ部材としてポリプロ
ピレン不織布を用いた比較電池（ｐ）と、微孔性薄膜を
用いず且セパレータ部材としてガラス繊維を用いた比較
電池（０）とを作成した。In order to investigate the effects of the battery of the present invention (A) having the above structure, we compared a comparative battery (p) that did not use a microporous thin film and used a polypropylene nonwoven fabric as a separator member, and a comparative battery that did not use a microporous thin film and used a separator member. A comparative battery (0) using glass fiber was created as a comparison battery.
第２図及び第３図はこれら電池の特性比較図であシ、第
２図は６．６にΩ負荷の初期放電特性、第６図はこれら
の電池を６０°Ｃの恒温槽で裸存し６ケ月後取シ出して
ろ、６にΩ負荷で放電した時の保存特性を夫々示す。Figures 2 and 3 are comparison diagrams of the characteristics of these batteries. Figure 2 shows the initial discharge characteristics of a 6.6Ω load, and Figure 6 shows the characteristics of these batteries when they were left exposed in a thermostatic oven at 60°C. After 6 months, take them out. Figure 6 shows the storage characteristics when discharged under an Ω load.
第２図の初期放電特性によると、本発明電池（Ａ）及び
比較電池（Ｃ）の如くセパレータ部材としてガラス繊維
を用いたものは、比較電池（Ｂ）ノＩｎ＋ （セパレー
タ部材としてポリプロピレン不織布を用いる場合に比し
作動電圧が高く、且容量が増大している。この理由はセ
パレータ部材の保液性の１［４異に起因している。According to the initial discharge characteristics shown in FIG. The operating voltage is higher and the capacity is increased compared to the case.This is due to the difference in liquid retention of the separator member.
又、第３図の保存特性では本発明電池（Ａ）に比して比
較電池（Ｃ）の劣下が著しい。この理由は比較電池（Ｃ
）においては負極とガラス繊維セパレータとが直接接し
ているだめ化学反応を起し、内部抵抗が増大したことに
よるものである。Furthermore, in the storage characteristics shown in FIG. 3, the comparison battery (C) is significantly inferior to the battery of the present invention (A). The reason for this is the comparison battery (C
), the negative electrode and the glass fiber separator were in direct contact with each other, causing a chemical reaction that increased the internal resistance.
本発明電池によれば、負極とガラス繊維セパレータとの
間に微孔性薄膜を配設したので負極とガラス繊維との化
学反応を抑制することができ電池性能の向上が計れる。According to the battery of the present invention, since the microporous thin film is disposed between the negative electrode and the glass fiber separator, the chemical reaction between the negative electrode and the glass fibers can be suppressed and the battery performance can be improved.
又、微孔性薄膜にょシ正極活物質の脱落物が負極に泳動
することを阻止しうる利点があり、斯る利点は本実施例
で示したようにガラス繊維セパレータと正極との間にも
微孔性薄膜を配設すればよシ有益となるものである。In addition, the microporous thin film has the advantage of being able to prevent the deposits of the positive electrode active material from migrating to the negative electrode, and as shown in this example, this advantage also exists between the glass fiber separator and the positive electrode. It would be even more beneficial to provide a microporous membrane.
尚、ガラス、ｍ維セパレータと微孔性薄膜とは組立前に
予、じめ熱溶着等により１体化して用いることもできる
。Incidentally, the glass, m-fiber separator and microporous thin film can be used by being integrated by heat welding or the like before assembly.
第１図は本発明電池の縦断面図、第２図及び第３図は杢
発明電池の放電特性を示し、第２図は初期特性、第３図
は保存特性を夫々示す。
（１）・・・・・・正極、（３）・旧・・正極端子兼用
外装缶、（４）・・・・・・負極、（５）・・・・・・
負極端子兼用封口蓋、（７）・旧・・ガラス繊維セパレ
ータ、（９）・旧・・微孔性薄膜、（Ａ）・・・・・・
本発明電池、ＣＢ）（０）・・・・・・比較電池。FIG. 1 is a longitudinal sectional view of the battery of the present invention, FIGS. 2 and 3 show the discharge characteristics of the battery of the present invention, FIG. 2 shows the initial characteristics, and FIG. 3 shows the storage characteristics, respectively. (1)...Positive electrode, (3) Old...Positive terminal outer can, (4)...Negative electrode, (5)...
Sealing lid for negative electrode terminal, (7) Old...Glass fiber separator, (9) Old... Microporous thin film, (A)...
Battery of the present invention, CB) (0) Comparative battery.
Claims (1)
間に介在せるガラス繊維セパレータと、少くとも前記負
極とセパレータとの間に配設された微孔性薄膜とを備え
た非水電解液電池。■A nonaqueous electrolyte comprising a negative electrode using a light metal as an active material, a positive electrode, a glass fiber separator interposed between these positive and negative electrodes, and a microporous thin film disposed at least between the negative electrode and the separator. liquid battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57110155A JPS59860A (en) | 1982-06-25 | 1982-06-25 | Nonaqueous electrolyte cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57110155A JPS59860A (en) | 1982-06-25 | 1982-06-25 | Nonaqueous electrolyte cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59860A true JPS59860A (en) | 1984-01-06 |
Family
ID=14528441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57110155A Pending JPS59860A (en) | 1982-06-25 | 1982-06-25 | Nonaqueous electrolyte cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59860A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54154040A (en) * | 1978-05-25 | 1979-12-04 | Matsushita Electric Industrial Co Ltd | Separator for lead storage battery |
| JPS55146873A (en) * | 1979-05-01 | 1980-11-15 | Hitachi Maxell Ltd | Organic electrolyte battery |
-
1982
- 1982-06-25 JP JP57110155A patent/JPS59860A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54154040A (en) * | 1978-05-25 | 1979-12-04 | Matsushita Electric Industrial Co Ltd | Separator for lead storage battery |
| JPS55146873A (en) * | 1979-05-01 | 1980-11-15 | Hitachi Maxell Ltd | Organic electrolyte battery |
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