JPH0458457A - Nonaqueous electrolyte battery - Google Patents
Nonaqueous electrolyte batteryInfo
- Publication number
- JPH0458457A JPH0458457A JP2167628A JP16762890A JPH0458457A JP H0458457 A JPH0458457 A JP H0458457A JP 2167628 A JP2167628 A JP 2167628A JP 16762890 A JP16762890 A JP 16762890A JP H0458457 A JPH0458457 A JP H0458457A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- battery
- lithium
- positive electrode
- current collector
- 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
Links
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 6
- 229910052796 boron Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 239000003792 electrolyte Substances 0.000 claims description 9
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 8
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229910000733 Li alloy Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000001989 lithium alloy Substances 0.000 claims description 3
- -1 lithium metal Chemical compound 0.000 claims description 3
- YZSKZXUDGLALTQ-UHFFFAOYSA-N [Li][C] Chemical compound [Li][C] YZSKZXUDGLALTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 2
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 abstract 1
- 229910000070 arsenic hydride Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 5
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、内部抵抗が小さく保存特性に優れ、更に二次
電池とした場合には、上記特性に加えて優れたサイクル
特性を有する非水系電解液電池に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is directed to a non-woven fabric that has low internal resistance and excellent storage characteristics, and when used as a secondary battery, has excellent cycle characteristics in addition to the above characteristics. Regarding aqueous electrolyte batteries.
（ロ）従来の技術
非水系電解液電池は、電圧が高く、エネルギー密度も高
いことからメモリーバックアップ用電源からカメラ用電
源まで広い分野において普及している。(b) Conventional technology Non-aqueous electrolyte batteries have high voltage and high energy density, and are therefore widely used in a wide range of fields, from memory backup power supplies to camera power supplies.
しかし非水系電解液電池は、負極活物質に活性の高いリ
チウムを使用しているため、種々の物質と反応しやすい
。従来から非水系電解液電池の電解液には、比較的安定
であるプロピレンカーボネートやエチレンカーボネート
などが用いられてきたが、電池の高温長期の保存におい
ては徐々にではあるがリチウムと電解液との反応が生じ
、様々な電池性能の劣化をひき起こしてしまう。However, since non-aqueous electrolyte batteries use highly active lithium as the negative electrode active material, they tend to react with various substances. Traditionally, propylene carbonate and ethylene carbonate, which are relatively stable, have been used as the electrolyte for non-aqueous electrolyte batteries, but when batteries are stored at high temperatures for long periods of time, the lithium and electrolyte gradually degrade. Reactions occur, causing various types of deterioration in battery performance.
例えは−次電池とした場合には、保存中に内部抵抗の上
昇が生じ、高率放電特性劣化につながってしまう。また
二次電池とした場合には、デンドライトが生じやすくな
るため、サイクル特性の劣化を生じる。そのため、非水
系電解液電池の負極には、リチウム合金あるいはリチウ
ムとの複合体が使用されるが、十分な特性が得られなか
った。For example, in the case of a secondary battery, internal resistance increases during storage, leading to deterioration of high rate discharge characteristics. Furthermore, when used as a secondary battery, dendrites are likely to occur, resulting in deterioration of cycle characteristics. For this reason, lithium alloys or composites with lithium are used for the negative electrodes of non-aqueous electrolyte batteries, but sufficient characteristics have not been obtained.
（ハ）発明が解決しようとする課題
本発明は、−次電池においては内部抵抗が／Ｊ＼さく保
存特性に優れ、二次電池においては前記特性に加えて、
サイクル特性に優れた非水系電解液電池を提供しようと
するものである。(c) Problems to be Solved by the Invention The present invention provides that a secondary battery has a low internal resistance and excellent storage characteristics, and a secondary battery has, in addition to the above characteristics,
The present invention aims to provide a non-aqueous electrolyte battery with excellent cycle characteristics.
（ニ）課題を解決するだめの手段
本発明の非水系電解液電池は、リチウム金属、リチウム
合金、リチウム・カーボン複合体等のリチウムを含有す
る負極と、正極と、有機溶媒及び溶質からなる寛解液と
を備えた電池であって、前記リチウムを含有する負極の
表面を、Ａｓ、Ｐ、Ｂ、Ｎから選択された少なくとも１
つを含む気体で処理したことを特徴とするものである。(d) Means for Solving the Problems The non-aqueous electrolyte battery of the present invention comprises a negative electrode containing lithium such as lithium metal, lithium alloy, lithium-carbon composite, etc., a positive electrode, an organic solvent, and a solute. The surface of the negative electrode containing lithium is coated with at least one selected from As, P, B, and N.
It is characterized by being treated with a gas containing:
また、前記正極としては、二酸化マンガン、リチウム含
有マンガン酸化物、リチウム含有コバルト酸化物を用い
るのが好ましい。Further, as the positive electrode, it is preferable to use manganese dioxide, lithium-containing manganese oxide, or lithium-containing cobalt oxide.
（ホ）作 用
本発明の如く、リチウムを含有する負極の表面を、Ａｓ
、Ｐ、Ｂ、Ｎから選択された少なくとも１つを含む気体
で処理することにより、種々の電池特性が向上する。こ
の理由は明かではないが、前記処理により、負極の表面
に電解液との反応を抑制する被膜が形成されるためであ
ると考えられる。(e) Effect As in the present invention, the surface of the negative electrode containing lithium is coated with As
, P, B, and N, various battery characteristics are improved. Although the reason for this is not clear, it is thought that the above treatment forms a film on the surface of the negative electrode that suppresses reaction with the electrolyte.
従来、リチウムを負極活物質として用いた電池の溶質と
して、Ｌ ＋ Ａ ｓ Ｆ ｉや、ＬｉＰＦ６を使用し
た場合、負極表面に電池内で同様の被膜が形成されるこ
とが考えられる。このように、これら（容質を電解液に
加え電池内で被膜を形成させる場合に；ま、前記被膜の
厚みを規制できないという欠点がある。Conventionally, when L + As F i or LiPF6 is used as a solute in a battery using lithium as a negative electrode active material, a similar film may be formed on the surface of the negative electrode within the battery. As described above, when these substances are added to the electrolyte to form a film within the battery, there is a drawback that the thickness of the film cannot be controlled.
しかし、本発明の如く、Ａｓ、Ｐ、Ｂ、Ｎから選択され
た少なくとも１つを含む気体で処理する場合には、気体
の濃度、処理時間を規制することにより、被膜の厚みを
規制することができるという特徴がある。However, when processing with a gas containing at least one selected from As, P, B, and N as in the present invention, the thickness of the film can be controlled by regulating the concentration of the gas and the processing time. It has the characteristic of being able to
（へ）実施例
本発明の実施例を、第１図に示す扁平型非水系電解液電
池に基づいて、以下に説明する。(f) Example An example of the present invention will be described below based on a flat type non-aqueous electrolyte battery shown in FIG.
実施例１には一次電池の場合、実施例２には一次電池の
場合について、記述する。Example 1 describes the case of a primary battery, and Example 2 describes the case of a primary battery.
（実施例１）
第１図は、本発明に係る扁平型の非水系電解液−次電池
の縦断面図である。(Example 1) FIG. 1 is a longitudinal sectional view of a flat non-aqueous electrolyte secondary battery according to the present invention.
第１図中、リチウム金属から成る負極１は、負極集電体
２の内面に圧着きれており、この負極集電体２はフェラ
イト系ステンレス鋼（ＳＵＳ４３０）から成る断面略コ
字状の負極缶３の内底面に固着されている。上記負極缶
３の周端は、ポリプロピレン製の絶縁バッキング４の内
部に固定されており、絶縁バッキング４の外周には、ス
テンレスから成り上記負極缶３とは反対方向に断面略コ
字状を成す正極缶５が固定されている。この正極缶５の
内底面には、正極集電体６が固定されており、この正極
集電体６の内面には正極７が固定されている。この正極
７と、前記負極１との間には、電解液が含浸されたセパ
レータ８が介装されている。ところで前記正極７は、３
５０〜４３０°Ｃの温度範囲で熱処理した二酸化マンガ
ンを活物質として用い、この二酸化マンガンと、導電剤
としてのカーボン粉末と、結着剤としてのフッ素樹脂粉
末とを、それぞれ８５：１０：５の重量比で混合した後
、この混合物を加圧成形し、２５０〜３５０°Ｃで熱処
理して作製したものである。In FIG. 1, a negative electrode 1 made of lithium metal is crimped onto the inner surface of a negative electrode current collector 2, and this negative electrode current collector 2 is made of ferritic stainless steel (SUS430) and has a substantially U-shaped cross section. It is fixed to the inner bottom surface of 3. The peripheral end of the negative electrode can 3 is fixed inside an insulating backing 4 made of polypropylene, and the outer periphery of the insulating backing 4 is made of stainless steel and has a substantially U-shaped cross section in the opposite direction to the negative electrode can 3. A positive electrode can 5 is fixed. A positive electrode current collector 6 is fixed to the inner bottom surface of the positive electrode can 5, and a positive electrode 7 is fixed to the inner surface of the positive electrode current collector 6. A separator 8 impregnated with an electrolyte is interposed between the positive electrode 7 and the negative electrode 1. By the way, the positive electrode 7 is 3
Manganese dioxide heat-treated in a temperature range of 50 to 430°C is used as an active material, and this manganese dioxide, carbon powder as a conductive agent, and fluororesin powder as a binder are mixed in a ratio of 85:10:5, respectively. After mixing in a weight ratio, this mixture was pressure-molded and heat-treated at 250 to 350°C.
一方、本発明の要点である前記負極１は、リチウムを、
常圧のＡｓＨ，（Ａｓを含む気体）に１時間さらした後
、所定寸法に打ち抜くことにより作製した。この処理の
時間は、数分から１時間程度が好ましい。On the other hand, the negative electrode 1, which is the main point of the present invention, contains lithium,
It was produced by exposing it to AsH (a gas containing As) at normal pressure for 1 hour, and then punching it out to a predetermined size. The time for this treatment is preferably about several minutes to one hour.
また電解液としては、プロピレンカーボネート（ＰＣ）
と、ジメトキシエタン（ＤＭＥ）とを、５：５の割合で
混合した混合系有機溶媒に、ＬｉＣＦ 、 Ｓ Ｏ，を
１モル／ｊ２溶解させたものを用いた。In addition, as an electrolyte, propylene carbonate (PC)
A mixed organic solvent containing dimethoxyethane (DME) and dimethoxyethane (DME) in a ratio of 5:5 was used, in which 1 mol/j2 of LiCF and SO were dissolved.
尚、電池径は２０Ｉ、電池厚は２．５ｍｎ、電池容量は
１３０ ｍＡｈである。The battery diameter is 20I, the battery thickness is 2.5 mm, and the battery capacity is 130 mAh.
このようにして作製した電池を、以下本発明電池Ａと称
する。The battery thus produced is hereinafter referred to as the battery A of the present invention.
一方、比較例としてＡ ｓ Ｈｓで処理していないリチ
ウムを用いた電池を製制し、比較電池Ｘとする。On the other hand, as a comparative example, a battery using lithium that was not treated with A s Hs was manufactured and designated as comparative battery X.
上記本発明電池Ａ及び比較電池Ｘにおいて初期の高率放
電特性と、保存後の高率放電特性とを調べた。その結果
を、第２図及び第３図に示す。The initial high rate discharge characteristics and the high rate discharge characteristics after storage of the above-mentioned invention battery A and comparative battery X were investigated. The results are shown in FIGS. 2 and 3.
ここで第２図は、電池組立後直ちに、温度２５°Ｃ１負
荷３００Ωで放電したときの高率放電特性であり、また
第３図は、電池組立後、６０℃で３力月間保存した後、
温度２５°Ｃ１負荷３００Ωで放電したときの高率放電
特性を示す図である。Here, Figure 2 shows the high rate discharge characteristics when the battery is discharged at a temperature of 25°C and a load of 300Ω immediately after assembly, and Figure 3 shows the high rate discharge characteristics when the battery is stored at 60°C for 3 months after assembly.
FIG. 3 is a diagram showing high rate discharge characteristics when discharging at a temperature of 25° C. and a load of 300Ω.
第２図及び第３図より明かなように、Ａ ｓ Ｈｍで処
理したリチウムを負極として用いた本発明電池Ａは、比
較電池Ｘに比べて、初期、保存後とも優れた高率放電特
性を示すことがわかる。As is clear from FIGS. 2 and 3, the battery A of the present invention, which uses lithium treated with As Hm as the negative electrode, has excellent high-rate discharge characteristics both initially and after storage, compared to the comparative battery X. I understand what is shown.
（実施例２）
ここで作製した非水系二次電池の構成は、第１図に示す
扁平型電池と同じであるが、正極活物質には充電可能な
マンガン酸化物を用いている。また電解液には、プロピ
レンカーボネート（ＰＣ）とエチレンカーボネート（Ｅ
Ｃ）とを、それぞれ５：５の割合で混合した混合系有機
溶媒に、ＬｉＣＦ、Ｓ Ｏ，を１モル／ｊ２溶解させた
ものを用いている。(Example 2) The configuration of the non-aqueous secondary battery produced here is the same as that of the flat battery shown in FIG. 1, but a rechargeable manganese oxide is used as the positive electrode active material. In addition, the electrolyte contains propylene carbonate (PC) and ethylene carbonate (E
LiCF and SO2 were dissolved in a mixed organic solvent in a ratio of 5:5.
そして負極に、ＰＨ，で処理したリチウムを用いた電池
を本発明電池Ｂ、処理しないリチウムを用いた電池を比
較電池Ｙとした。A battery using lithium treated with PH as a negative electrode was designated as Invention Battery B, and a battery using untreated lithium was designated as Comparative Battery Y.
これらの電池を用い、電池のサイクル特性を比較した。Using these batteries, the cycle characteristics of the batteries were compared.
このサイクル試験の条件は、充放電電流２ｍＡで３時間
とし、放電時間内に２．ＯＶに達した電池をその電池寿
命とした。そして電池組立直後にサイクル試験した結果
を第４図に、６０°Ｃで３力月間の保存後にサイクル試
験した結果を第５図に、それぞれ示す。第４図、第５図
より、本発明電池Ｂは、比較電池Ｙに比べて、初期、保
存後とも、サイクル特性に優れていることがわかる。The conditions for this cycle test were a charge/discharge current of 2 mA for 3 hours, and 2. The battery that reached OV was defined as its battery life. Figure 4 shows the results of a cycle test immediately after battery assembly, and Figure 5 shows the results of a cycle test after storage at 60°C for 3 months. From FIG. 4 and FIG. 5, it can be seen that the battery B of the present invention has excellent cycle characteristics compared to the comparative battery Y both at the initial stage and after storage.
（ト〉 発明の詳細
な説明したように、本発明の非水系電解液電池は、リチ
ウムを含有する負極の表面を、Ａｓ、Ｐ、Ｂ、Ｎから選
択された少なくとも１つを含む気体で処理しているので
、−次電池とした場合には内部抵抗が小さく保存特性に
優れ、また二次電池とした場合には上記特性に加えてサ
イクル特性に優れた電池が提供でき、その工業的価値は
極めて大きい。(G) As described in detail, the non-aqueous electrolyte battery of the present invention is characterized in that the surface of the negative electrode containing lithium is treated with a gas containing at least one selected from As, P, B, and N. Therefore, when used as a secondary battery, it has low internal resistance and excellent storage characteristics, and when used as a secondary battery, it can provide a battery with excellent cycle characteristics in addition to the above characteristics, and its industrial value is high. is extremely large.
第１図は本発明の扁平型非水系電解液電池の縦断面図、
第２図は初期の放電特性図、第３図は保存後の放電特性
図、第４図は初期のサイクル特性図、第５図は保存後の
サイクル特性図である。
１・・・負極、２・・・負極集電体、３・・・負極缶、
４・・・絶縁バッキング、５・・・正極缶、６・・・正
極集電体、７・・・正極、８・・・セパレータ、
Ａ、Ｂ・・・本発明電池、Ｘ、Ｙ・・・比較電池。
第１図
第２図FIG. 1 is a longitudinal cross-sectional view of a flat non-aqueous electrolyte battery of the present invention;
FIG. 2 is an initial discharge characteristic diagram, FIG. 3 is a discharge characteristic diagram after storage, FIG. 4 is an initial cycle characteristic diagram, and FIG. 5 is a cycle characteristic diagram after storage. 1... Negative electrode, 2... Negative electrode current collector, 3... Negative electrode can,
4... Insulating backing, 5... Positive electrode can, 6... Positive electrode current collector, 7... Positive electrode, 8... Separator, A, B... Present invention battery, X, Y...・Comparison battery. Figure 1 Figure 2
Claims (2)
ン複合体等のリチウムを含有する負極と、正極と、有機
溶媒及び溶質からなる電解液とを備えた電池であって、 前記リチウムを含有する負極の表面を、Ａｓ、Ｐ、Ｂ、
Ｎから選択された少なくとも１つを含む気体で処理した
ことを特徴とする非水系電解液電池。(1) A battery comprising a negative electrode containing lithium such as lithium metal, a lithium alloy, or a lithium-carbon composite, a positive electrode, and an electrolyte consisting of an organic solvent and a solute, the battery comprising the negative electrode containing lithium. The surface is As, P, B,
A non-aqueous electrolyte battery, characterized in that it is treated with a gas containing at least one selected from N.
ガン酸化物、リチウム含有コバルト酸化物から選択され
た少なくとも１つであることを特徴とする請求項（１）
記載の非水系電解液電池。(2) Claim (1) characterized in that the positive electrode is at least one selected from manganese dioxide, lithium-containing manganese oxide, and lithium-containing cobalt oxide.
The described non-aqueous electrolyte battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167628A JP2925665B2 (en) | 1990-06-26 | 1990-06-26 | Non-aqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167628A JP2925665B2 (en) | 1990-06-26 | 1990-06-26 | Non-aqueous electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0458457A true JPH0458457A (en) | 1992-02-25 |
| JP2925665B2 JP2925665B2 (en) | 1999-07-28 |
Family
ID=15853313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2167628A Expired - Fee Related JP2925665B2 (en) | 1990-06-26 | 1990-06-26 | Non-aqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2925665B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018047456A1 (en) * | 2016-09-12 | 2018-03-15 | パナソニックＩｐマネジメント株式会社 | Lithium battery |
-
1990
- 1990-06-26 JP JP2167628A patent/JP2925665B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018047456A1 (en) * | 2016-09-12 | 2018-03-15 | パナソニックＩｐマネジメント株式会社 | Lithium battery |
| JPWO2018047456A1 (en) * | 2016-09-12 | 2019-01-31 | パナソニックＩｐマネジメント株式会社 | Lithium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2925665B2 (en) | 1999-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |