JPS62291859A - Cylindrical alkaline battery - Google Patents
Cylindrical alkaline batteryInfo
- Publication number
- JPS62291859A JPS62291859A JP61135703A JP13570386A JPS62291859A JP S62291859 A JPS62291859 A JP S62291859A JP 61135703 A JP61135703 A JP 61135703A JP 13570386 A JP13570386 A JP 13570386A JP S62291859 A JPS62291859 A JP S62291859A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- polyvinyl alcohol
- boric acid
- positive electrode
- alkaline 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
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 22
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004327 boric acid Substances 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000007864 aqueous solution Substances 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 17
- 239000000203 mixture Substances 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 208000005422 Foreign-Body reaction Diseases 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- H01M50/44—Fibrous material
-
- 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
-
- 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
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- 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
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline 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】
３、発明の詳細な説明
産業上の利用分野
本発明は、正極活物質に酸化水銀や二酸化マンガンなど
を用いる円筒形アルカリ電池に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a cylindrical alkaline battery using mercury oxide, manganese dioxide, or the like as a positive electrode active material.
従来の技術
円筒形アルカリ電池は、古くから医療用機器や各種測定
器などの電源として広く利用されている。BACKGROUND OF THE INVENTION Cylindrical alkaline batteries have been widely used as power sources for medical equipment and various measuring instruments for a long time.
この円筒形アルカリ電池に用いられるセパレータは、ポ
リビニルアルコールの皮膜を表面に形成した樹脂繊維ま
たは一切の表面処理を加えない樹脂繊維の薄布からなり
、第３図の４に示すように開口先端部をもつ有底円筒形
に成形されて電池の正極体の中空部へ挿入され、その内
部に充填されたゲル状亜鉛やその他の負極側構成材と組
合わされて、電池を構成していた。The separator used in this cylindrical alkaline battery is made of resin fibers with a polyvinyl alcohol film formed on the surface or a thin cloth of resin fibers without any surface treatment. It was formed into a cylindrical shape with a bottom and inserted into the hollow part of the positive electrode body of the battery, and was combined with gelled zinc and other negative electrode side constituent materials filled inside to form the battery.
発明が解決しようとする問題点
しかしながら上記のセパレータを用いた電池は、ごく微
量の異種金属などがセパレータ外面に付着していた場合
、あるいは既に正極合剤に混在していた場合、高温保存
中に開路電圧や残存電気容量が著しく劣化した。Problems to be Solved by the Invention However, batteries using the above-mentioned separators may suffer during high-temperature storage if very small amounts of dissimilar metals adhere to the outer surface of the separator or if they are already mixed in the positive electrode mixture. The open circuit voltage and residual capacitance deteriorated significantly.
本発明は上記問題点に鑑み、ごく微量の異種金属などが
前述のように混入した場合でも、電池特性の劣化を抑制
する円筒形アルカリ電池を提供するものである。In view of the above problems, the present invention provides a cylindrical alkaline battery that suppresses deterioration of battery characteristics even when a very small amount of a different metal is mixed in as described above.
問題点を解決するための手段
この目的を達成するためて、本発明はセパレータとして
、耐アルカリ性の樹脂繊維にポリビニルアルコールと、
添加剤としての硼酸を溶解した水溶液を含浸させた後、
一定時間乾燥することにより皮膜を表面に形成した薄布
を用いること°を特徴とする円筒形アルカリ電池である
。Means for Solving the Problems In order to achieve this object, the present invention uses polyvinyl alcohol and alkali-resistant resin fibers as a separator.
After impregnation with an aqueous solution containing boric acid as an additive,
This cylindrical alkaline battery is characterized by using a thin cloth with a film formed on its surface by drying for a certain period of time.
作用
このような電池であれば、少量の異種金属などが前述の
ように混入した電池であっても、用いるセパレータの表
面に硼酸とポリビニルアルコールとが化学結合して増粘
し、ゲル化度が増し、ポリビニルアルコール単独の場合
より耐水接着力のより強く、かつセパレータ内部へのポ
リビニルアルコールの不必要な浸透を防ぐ皮膜が形成さ
れ、電解液存在下で起こる混入物と正極合剤との化学反
応を阻止しうるものであり、セパレータ表面が強化され
て電池の保存特性が向上する。Function In such a battery, even if a small amount of different metals are mixed in as mentioned above, the boric acid and polyvinyl alcohol will chemically bond to the surface of the separator used, increasing the viscosity, and reducing the degree of gelation. A film is formed that has stronger water-resistant adhesion than polyvinyl alcohol alone and prevents unnecessary penetration of polyvinyl alcohol into the separator, and prevents chemical reactions between contaminants and the positive electrode mixture that occur in the presence of the electrolyte. This strengthens the separator surface and improves the storage characteristics of the battery.
実施例
以下、本発明の実施例を図により説明する。第２図は従
来および本発明により得られたセパレータを用いた円筒
形水銀電池（高さ１６．Ｂｕｇ、外径１６゜４朋）の半
断面図である。この電池の一般的な製造法は、正極合剤
１を正極ケース２内に正極リング３と共に挿入して加圧
成型する。そして有底円筒形セパレータ４を、成型した
正極合剤１の中空部に挿入し、さらにこのセパレータ４
の内部に氷化亜鉛粉末とゲル化剤とアルカリ電解液とを
混合したゲル状亜鉛負極６の所定量を充填した後、集電
子８を溶接した封口板７と絶縁ガスケット８からなる負
榎端子キャップを装填し、正極ケース２の開口縁部を封
口して電池を構成している。こうちセパレータに本発明
の特徴があり、第１図ａに示すようにセパレータ４は耐
アルカリ性樹脂繊維を、ポリビニルアルコール２．６重
量％および硼酸０．２重量％を溶解した水溶液に含浸さ
せた後、４５℃で１２時間乾燥することにより得られる
ポリビニルアルコールと、添加剤としての硼酸から成る
皮膜４瓢を表面に形成した薄布からなる。上記に説明し
た本発明によるセパレータと、従来のセパレータを各々
用いて実施例の円筒形水銀電池を組立てた。その際、セ
パレータの外側面と正極合剤の内側面との隙間に黄銅粉
末の約５岬を混入させて１００個ずつ組立てた。電池完
成後４５℃の温度下で下表の日程により開路電圧とご負
荷抵抗６２Ωで端子電圧０，９ Ｖ Ｋなるまでの連続
放電持続時間を試験した結果、下表のごとく本発明品に
著しい効果が得られた。開路電圧のデータは試験数１０
０の平均値、持続時間のデータは試験数６の平均値であ
る。EXAMPLES Hereinafter, examples of the present invention will be explained with reference to the drawings. FIG. 2 is a half-sectional view of a cylindrical mercury battery (height: 16 mm, outer diameter: 16.degree. 4 mm) using separators obtained according to the conventional method and the present invention. A general method for manufacturing this battery is to insert a positive electrode mixture 1 into a positive electrode case 2 together with a positive electrode ring 3 and to mold the positive electrode mixture under pressure. Then, a bottomed cylindrical separator 4 is inserted into the hollow part of the molded positive electrode mixture 1, and the separator 4
A negative terminal consisting of a sealing plate 7 and an insulating gasket 8 to which a current collector 8 is welded is filled with a predetermined amount of a gelled zinc negative electrode 6 made of a mixture of frozen zinc powder, a gelling agent, and an alkaline electrolyte. A battery is constructed by loading the cap and sealing the opening edge of the positive electrode case 2. The Kochi separator has a feature of the present invention, and as shown in FIG. It consists of a thin cloth with a film formed on its surface consisting of polyvinyl alcohol obtained by drying at 45° C. for 12 hours and boric acid as an additive. Cylindrical mercury batteries of Examples were assembled using the above-described separator according to the present invention and the conventional separator. At that time, about 5 capes of brass powder were mixed into the gap between the outer surface of the separator and the inner surface of the positive electrode mixture, and 100 separators were assembled. After the battery was completed, we tested the continuous discharge duration until the terminal voltage reached 0.9 VK at an open circuit voltage and a load resistance of 62 Ω according to the schedule shown in the table below at a temperature of 45°C after the battery was completed. It worked. Open circuit voltage data is from 10 tests
The average value of 0 and the duration data are the average values of 6 tests.
次に本発明における各々の特徴について述べる○セパレ
ータ表面に形成するポリビニルアルコールと硼酸から成
る皮膜の面積であるが、前記実施薄布の両面としたが、
特に正極合剤と混入物による反応がセパレータ表面に対
して強い攻撃となるため、第１図すのように正極側表面
、つまり薄布の折曲げ後、外側になる面のみに皮膜を形
成してもよい。Next, we will describe each feature of the present invention. ○ The area of the film made of polyvinyl alcohol and boric acid formed on the surface of the separator is on both sides of the thin fabric mentioned above.
In particular, since the reaction between the positive electrode mixture and contaminants causes a strong attack on the separator surface, a film is formed only on the positive electrode side surface, that is, the outer surface after the thin cloth is bent, as shown in Figure 1. You can.
次にポリビニルアルコールと硼酸との水溶液の濃度であ
るが、ポリビニルアルコールの重合度やケン化度により
水溶液性や帯電性および耐水接着力が異なる。しかし、
共通して言えることは前記濃度が高いほどセパレータ表
面は異物反応に対して強化されるが、電池の短絡電流は
低下し、逆に前記濃度が低いほどこれらの特性は逆の傾
向となる。またポリビニルアルコールと硼酸との混合重
量比率であるが、これもポリビニルアルコールの物性水
準により水溶液のゲル化度や相溶性、耐水接着力が異な
る。しかし、共通して言えることは添加剤の重量比率が
高いほど耐水接着力が強くなす、セパレータ内部へのポ
リビニルアルコールの不必要な浸透を防ぎ、セパレータ
の表面が強化さるため生産性も低下する。逆に添加剤の
重量比率が低いほどこれらの特性は逆の傾向となる。Next, regarding the concentration of the aqueous solution of polyvinyl alcohol and boric acid, the aqueous solubility, charging property, and water-resistant adhesive strength vary depending on the degree of polymerization and saponification of the polyvinyl alcohol. but,
What can be said in common is that the higher the concentration is, the more the separator surface is strengthened against foreign body reactions, but the short circuit current of the battery is lowered, and conversely, the lower the concentration is, the opposite tendency of these characteristics is. Regarding the mixing weight ratio of polyvinyl alcohol and boric acid, the degree of gelation, compatibility, and water-resistant adhesive strength of the aqueous solution also vary depending on the physical property level of the polyvinyl alcohol. However, what can be said in common is that the higher the weight ratio of the additive, the stronger the water-resistant adhesive strength, which prevents unnecessary penetration of polyvinyl alcohol into the separator, and which strengthens the surface of the separator, which also reduces productivity. Conversely, as the weight ratio of the additive is lower, these properties tend to be opposite.
従って物性がすべて異なる主なポリビニルアルコール４
品種と硼酸の混合重量比率による前述の黄銅粉末混入試
験を行ない、開路電圧が１．３５０Ｖ未満となった電池
数と短絡電流について４６℃保存下１６日後の結果を次
表に示す。表中のｐｖム重量％は水溶液１ｏｏに対する
値で、硼酸重量％はｐｖム１ｏｏに対する値である。Therefore, the main polyvinyl alcohols with all different physical properties 4
The above-mentioned brass powder mixing test was conducted depending on the product type and the mixing weight ratio of boric acid, and the results of the number of batteries with an open circuit voltage of less than 1.350 V and the short circuit current after 16 days of storage at 46°C are shown in the following table. In the table, the weight percent of pvum is a value for 100 of the aqueous solution, and the weight percent of boric acid is a value for 100 of pvum.
なお、試験数は１００個で、各欄のデータとも上段が電
圧劣化数、下段が短絡電流人の平均値である。The number of tests was 100, and the data in each column shows the number of voltage deteriorations in the upper row and the average value of short circuit current in the lower row.
（以 下 余 白）
これによりポリビニルアルコールと硼酸から成る水溶液
の濃度は、ポリビニルアルコールが１．０〜４．０重量
％硼酸はその１５重量％以下の範囲が適当であった。な
お、この範囲をセパレータ面積１ｍ’ｆｉたりの塗工量
に換算すると７．６〜３Ｊｊ９であった。また硼酸のか
わりに硼砂を用いてもかまわないが、天然産の場合、純
度に問題があり、混合重量比率を設定しにくいが、硼酸
よりも少量でゲル化しやすい長所もある。(Margin below) As a result, the appropriate concentration of the aqueous solution consisting of polyvinyl alcohol and boric acid is 1.0 to 4.0% by weight of polyvinyl alcohol and 15% by weight or less of boric acid. In addition, when this range was converted into the coating amount per 1 m'fi of separator area, it was 7.6-3Jj9. Also, borax may be used instead of boric acid, but if it is a natural product, there is a problem with purity and it is difficult to set the mixing weight ratio, but it also has the advantage that it gels more easily in a small amount than boric acid.
発明の効果
以上のように本発明はセパレータの材料となる樹脂繊維
の薄布にポリビニルアルコールと、硼酸から成る皮膜を
形成することにより、量産化を容易にし、かつ電池特性
も向上することができるものである。Effects of the Invention As described above, the present invention facilitates mass production and improves battery characteristics by forming a film made of polyvinyl alcohol and boric acid on a thin resin fiber cloth used as a separator material. It is something.
第１図ａ、ｂは本発明におけるセパレータを示す断面図
、第２図は従来および本発明における円筒形アルカリ電
池の半断面図、第３図は従来のセパレータを示す断面図
である。
１・・・・・・正極合剤、２・・・・・・正極ケース、
３・・・・・・正極リング、４・・・・・・セパレータ
、４２Ｌ・・・・・・ポリビニルアルコールと硼酸から
成る皮膜、６・・・・・・ゲル状亜鉛負極、６・・・・
・・集電子、７・・・・・・封口板、８・・・・・・絶
縁ガスケット。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第３
図1A and 1B are sectional views showing a separator according to the present invention, FIG. 2 is a half sectional view of a conventional cylindrical alkaline battery and a cylindrical alkaline battery according to the present invention, and FIG. 3 is a sectional view showing a conventional separator. 1... Positive electrode mixture, 2... Positive electrode case,
3... Positive electrode ring, 4... Separator, 42L... Film consisting of polyvinyl alcohol and boric acid, 6... Gel-like zinc negative electrode, 6...・
...Collector, 7...Sealing plate, 8...Insulating gasket. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
figure
Claims (2)
ら成る皮膜を表面に形成したセパレータを用いることを
特徴とする円筒形アルカリ電池。(1) A cylindrical alkaline battery characterized by using a separator whose surface is coated with a film made of polyvinyl alcohol and boric acid as an additive.
の薄布に１．０〜４．０重量％のポリビニルアルコール
と、ポリビニルアルコールの１５重量％以下の硼酸を溶
解した水溶液を含浸させた後、一定時間乾燥したもので
ある特許請求の範囲第１項記載の円筒形アルカリ電池。(2) After the film on the surface of the separator is formed by impregnating a thin cloth of alkali-resistant resin fiber with an aqueous solution containing 1.0 to 4.0% by weight of polyvinyl alcohol and 15% by weight or less of boric acid in the polyvinyl alcohol, The cylindrical alkaline battery according to claim 1, which is dried for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61135703A JPS62291859A (en) | 1986-06-11 | 1986-06-11 | Cylindrical alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61135703A JPS62291859A (en) | 1986-06-11 | 1986-06-11 | Cylindrical alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62291859A true JPS62291859A (en) | 1987-12-18 |
Family
ID=15157916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61135703A Pending JPS62291859A (en) | 1986-06-11 | 1986-06-11 | Cylindrical alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62291859A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009527091A (en) * | 2006-02-16 | 2009-07-23 | エルジー・ケム・リミテッド | Electrochemical element with improved heat resistance |
| US7740984B2 (en) | 2004-06-04 | 2010-06-22 | Rovcal, Inc. | Alkaline cells having high capacity |
-
1986
- 1986-06-11 JP JP61135703A patent/JPS62291859A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7740984B2 (en) | 2004-06-04 | 2010-06-22 | Rovcal, Inc. | Alkaline cells having high capacity |
| JP2009527091A (en) * | 2006-02-16 | 2009-07-23 | エルジー・ケム・リミテッド | Electrochemical element with improved heat resistance |
| US9017878B2 (en) | 2006-02-16 | 2015-04-28 | Lg Chem, Ltd. | Lithium secondary battery with enhanced heat-resistance |
| EP3460877A1 (en) * | 2006-02-16 | 2019-03-27 | LG Chem, Ltd. | Lithium secondary battery with enhanced heat-resistance |
| US10305138B2 (en) | 2006-02-16 | 2019-05-28 | Lg Chem, Ltd. | Lithium secondary battery with enhanced heat-resistance |
| US10879556B2 (en) | 2006-02-16 | 2020-12-29 | Lg Chem, Ltd. | Lithium secondary battery with enhanced heat-resistance |
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