JP2999857B2 - Non-aqueous electrolyte secondary battery - Google Patents
Non-aqueous electrolyte secondary batteryInfo
- Publication number
- JP2999857B2 JP2999857B2 JP3164456A JP16445691A JP2999857B2 JP 2999857 B2 JP2999857 B2 JP 2999857B2 JP 3164456 A JP3164456 A JP 3164456A JP 16445691 A JP16445691 A JP 16445691A JP 2999857 B2 JP2999857 B2 JP 2999857B2
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- lithium
- secondary battery
- electrolyte secondary
- aqueous electrolyte
- 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.)
- Expired - Fee Related
Links
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims description 17
- 229910052744 lithium Inorganic materials 0.000 claims description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
- 150000001450 anions Chemical class 0.000 claims description 11
- 239000003575 carbonaceous material Substances 0.000 claims description 11
- -1 p-toluenesulfonic acid ion Chemical class 0.000 claims description 5
- 229910000733 Li alloy Inorganic materials 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 239000001989 lithium alloy Substances 0.000 claims description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N p-toluenesulfonic acid Substances CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 description 7
- 150000004706 metal oxides Chemical class 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 5
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- GCPXMJHSNVMWNM-UHFFFAOYSA-N arsenous acid Chemical compound O[As](O)O GCPXMJHSNVMWNM-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 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
Landscapes
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、正極と、リチウム金
属、リチウム合金或るいはリチウムを吸蔵放出可能な炭
素材料からなる負極と、非水電解液とを備えた非水電解
液二次電池に係り、特に正極の改良に関する。The present invention relates to a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode made of a lithium metal, a lithium alloy or a carbon material capable of inserting and extracting lithium, and a non-aqueous electrolyte. In particular, the present invention relates to improvement of a positive electrode.
【０００２】[0002]
【従来の技術】リチウム金属を負極とした非水電解液二
次電池は、そのエネルギ−密度が大きいことから特に研
究が盛んである。2. Description of the Related Art A non-aqueous electrolyte secondary battery using lithium metal as a negative electrode has been actively studied because of its high energy density.
【０００３】しかしながら、負極活物質であるリチウム
が、充電の際に負極表面に樹枝状に析出して正極に接
し、内部短絡を引き起こすため充放電サイクルが極めて
短いという問題があった。この対策として、リチウムと
合金化する金属、例えばアルミニウムを用いて、リチウ
ム−アルミニウム合金を形成し、これを負極としたり、
溶質としてＬｉＡｓＦ6を溶解した電解液を用いて、リ
チウムの充放電効率を向上させ、サイクル特性の向上を
図る方法が考えられているが、前者の方法では作動電圧
が低下するという欠点が、後者の方法では過放電等によ
り、電解液が分解すると、亜砒酸が生じる場合があり、
安全性の面で問題がある。[0003] However, there has been a problem that the charge / discharge cycle is extremely short since lithium, which is a negative electrode active material, precipitates in a dendritic manner on the surface of the negative electrode during charging and contacts the positive electrode, causing an internal short circuit. As a countermeasure, using a metal alloying with lithium, for example, aluminum, a lithium-aluminum alloy is formed, and this is used as a negative electrode,
There has been considered a method of improving the charge and discharge efficiency of lithium and improving the cycle characteristics by using an electrolyte in which LiAsF 6 is dissolved as a solute, but the former method has a disadvantage that the operating voltage is reduced. In the method of the above, when the electrolytic solution is decomposed due to overdischarge or the like, arsenous acid may be generated,
There is a problem in terms of safety.
【０００４】これらの欠点を改善するために、カ−ボン
系の物質を負極として用いる方法が考え出されたが、こ
の場合は、カ−ボンの密度が低いために、単位体積当り
に保持できるカ−ボン量が限られ、正極に高電圧で作動
する活物質を用いないとエネルギ−密度が低下し、その
ような高電圧では電解液が分解する上に缶材の腐食も激
しいという問題がある。In order to improve these drawbacks, a method using a carbon-based material as a negative electrode has been devised. In this case, however, the density of carbon is low, so that it can be maintained per unit volume. If the amount of carbon is limited and the positive electrode does not use an active material that operates at a high voltage, the energy density is reduced. At such a high voltage, the electrolyte is decomposed and the can material is corroded severely. is there.
【０００５】又、正極に金属酸化物を用いた非水電解液
二次電池は、金属酸化物がかなり比重が大きいため、電
池の軽量化には問題がある。[0005] A nonaqueous electrolyte secondary battery using a metal oxide for the positive electrode has a problem in reducing the weight of the battery because the metal oxide has a considerably large specific gravity.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記問題点に
着目してなされたものであり、電池を軽量化し、単位重
量当りのエネルギ−密度の大きい非水電解液二次電池を
提供するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a non-aqueous electrolyte secondary battery having a reduced weight and a high energy density per unit weight. It is.
【０００７】[0007]
【課題を解決するための手段】本発明は、正極と、リチ
ウム金属、リチウム合金或いはリチウムを吸蔵放出可能
な炭素材料からなる負極と、非水電解液とを備えた非水
電解液二次電池において、前記正極が炭素材料からなり
この炭素材料にイオン式量が過塩素酸イオンのイオン式
量以上である巨大アニオンを正極作製段階であらかじめ
ドープしたものであることを特徴とする。 The present invention provides a positive electrode, a lithium battery,
Can absorb and release metal, lithium alloy or lithium
Non-aqueous system comprising a negative electrode made of a flexible carbon material and a non-aqueous electrolyte
In the electrolyte secondary battery, the positive electrode is made of a carbon material.
This carbon material has an ionic formula of perchlorate ion
Large anions in excess of the amount
It is characterized by being doped.
【０００８】[0008]
【作用】コ−クスは比重が１前後であり、従来非水電解
液二次電池の正極活物質として用いられている金属酸化
物（比重３〜７）に比べて大幅に軽い。又、容量的にも
２００ｍＡｈ／ｇ以上の容量があり、金属酸化物と同等
以上の容量を有する。更に、作動電圧も３Ｖ以上と高
い。The coke has a specific gravity of about 1, and is much lighter than metal oxides (specific gravity 3 to 7) conventionally used as a positive electrode active material of a nonaqueous electrolyte secondary battery. Further, it has a capacity of 200 mAh / g or more in terms of capacity, and has a capacity equal to or more than that of a metal oxide. Further, the operating voltage is as high as 3 V or more.
【０００９】従って、このタイプの電池は、同エネルギ
−量の金属酸化物を用いた電池に比べ、軽量化が可能で
ある。Therefore, this type of battery can be reduced in weight as compared with a battery using a metal oxide having the same energy amount.
【００１０】ここで、巨大アニオンをド−プしたコ−ク
スを正極として用いた場合、アニオンが脱ド−プでき
ず、代わりにカチオンであるリチウムイオンが正極に入
ることで電気的に中性が保たれる。従って、電池の充放
電反応にはリチウムの移動が起こるだけで、正極に金属
酸化物を用いた非水電解液電池と同様、シンプルな電池
系となる。Here, when coke doped with a giant anion is used as a positive electrode, the anion cannot be undoped, and instead lithium ions, which are cations, enter the positive electrode, and are electrically neutralized. Is kept. Therefore, only the movement of lithium occurs in the charge / discharge reaction of the battery, and the battery becomes a simple battery system like a non-aqueous electrolyte battery using a metal oxide for the positive electrode.
【００１１】尚、巨大アニオンとしては、パラトルエン
スルホン酸イオン、ポリビニルスルホン酸イオン、過硫
酸イオン等のアニオンが挙げられる。[0011] As the giant anion, p-toluenesulfonic acid ion, polyvinyl sulfonic acid ion, and anions such as persulfate ion.
【００１２】[0012]
【実施例】以下に、本発明の実施例につき詳述する。Embodiments of the present invention will be described below in detail.
【００１３】［実施例１］図１に、本発明の一実施例と
しての扁平型非水電解液二次電池の縦断面図を示す。Embodiment 1 FIG. 1 is a longitudinal sectional view of a flat nonaqueous electrolyte secondary battery as one embodiment of the present invention.
【００１４】１は負極であり、負極缶２の内底面に固着
せる負極集電体３に圧着されている。４は本発明の要旨
とする正極であって、正極缶５の内底面に固着せる正極
集電体６に圧着されている。７はセパレ−タであって、
プロピレンカ−ボネ−トに、溶質としてトリフルオロメ
タンスルホン酸リチウムを溶解した電解液が含浸されて
いる。８は絶縁パッキングである。Reference numeral 1 denotes a negative electrode, which is pressure-bonded to a negative electrode current collector 3 fixed to the inner bottom surface of a negative electrode can 2. Reference numeral 4 denotes a positive electrode according to the gist of the present invention, which is press-bonded to a positive electrode current collector 6 fixed to the inner bottom surface of a positive electrode can 5. 7 is a separator,
An electrolyte in which lithium trifluoromethanesulfonate is dissolved as a solute is impregnated in propylene carbonate. 8 is an insulating packing.
【００１５】次に電極の作成例について詳述する。Next, an example of forming an electrode will be described in detail.
【００１６】４００メッシュパスしたコ−クスを加圧成
形し、成型体を作成した。この成型体を正極に、リチウ
ム金属を負極に用い、パラトルエンスルホン酸リチウム
を溶解したプロピレンカ−ボネ−ト溶液中で充電して、
正極内にパラトルエンスルホン酸リチウムのアニオンを
ド−プした。これをａ1電極と称する。A coke having passed a 400 mesh pass was subjected to pressure molding to prepare a molded body. Using this molded body as a positive electrode and lithium metal as a negative electrode, charging in a propylene carbonate solution in which lithium paratoluenesulfonate was dissolved,
An anion of lithium paratoluenesulfonate was doped in the positive electrode. This is called a 1 electrode.
【００１７】次に、成型体の１つを正極に、リチウム金
属を負極に用い、溶質として過塩素酸リチウムを溶解し
たプロピレンカ−ボネ−ト溶液中で放電して、正極内に
リチウムをド−プした。これをａ2電極と称する。Next, one of the molded bodies is used as a positive electrode, and lithium metal is used as a negative electrode. Discharge is performed in a propylene carbonate solution in which lithium perchlorate is dissolved as a solute, and lithium is doped in the positive electrode. - This is referred to as a 2 electrode.
【００１８】ａ1電極を正極に、ａ2電極を負極に用いて
本発明電池Ａを作製した。A battery A of the present invention was prepared using the a 1 electrode as a positive electrode and the a 2 electrode as a negative electrode.
【００１９】［実施例２］実施例１で作製した成型体の
１つを正極に、リチウム金属を負極に用い、ポリビニル
スルホン酸リチウムを溶解したプロピレンカ−ボネ−ト
溶液中で充電して、正極内にポリビニルスルホン酸リチ
ウムのアニオンをド−プした。これをｂ電極とする。こ
のｂ電極を電池の正極とする以外は、前記実施例１と同
様の電池を作製し、これを本発明電池Ｂとする。Example 2 One of the molded bodies prepared in Example 1 was used as a positive electrode, lithium metal was used as a negative electrode, and charged in a propylene carbonate solution in which lithium polyvinyl sulfonate was dissolved. An anion of lithium polyvinyl sulfonate was doped in the positive electrode. This is referred to as an “b” electrode. A battery was prepared in the same manner as in Example 1 except that the b electrode was used as the positive electrode of the battery, and this was designated as Battery B of the present invention.
【００２０】［実施例３］実施例１で作製した成型体の
１つを正極に、リチウム金属を負極に用い、過硫酸リチ
ウムを溶解したプロピレンカ−ボネ−ト溶液中で充電し
て、正極内に過硫酸リチウムのアニオンをド−プした。
これをｃ電極とする。このｃ電極を電池の正極とする以
外は、前記実施例１と同様の電池を作製し、これを本発
明電池Ｃとする。Example 3 One of the molded bodies prepared in Example 1 was used as a positive electrode, lithium metal was used as a negative electrode, and charged in a propylene carbonate solution in which lithium persulfate was dissolved. An anion of lithium persulfate was doped therein.
This is called the c electrode. A battery was prepared in the same manner as in Example 1 except that the c electrode was used as the positive electrode of the battery, and this was designated as Battery C of the present invention.
【００２１】［比較例１］正極にＬｉＣｏＯ2を用いた
以外は実施例１と同様の電池を作製し、これを比較電池
Ｄとした。Comparative Example 1 A battery similar to that of Example 1 was prepared except that LiCoO 2 was used for the positive electrode, and this was designated as Comparative Battery D.
【００２２】本発明電池Ａ〜Ｃ、比較電池Ｄは、すべて
容量３３３ｍＡｈ、作動電圧３.６Ｖともに同一であっ
た。The batteries A to C of the present invention and the comparative battery D all had the same capacity of 333 mAh and the same operating voltage of 3.6 V.
【００２３】表１に、各電池の重量と、単位重量当りの
エネルギ−密度を示す。比較電池Ｄは重量当りのエネル
ギ−密度が８０Ｗｈ／Ｋｇであるのに対し、本発明電池
Ａ〜Ｃは１２０〜１５０Ｗｈ／Ｋｇと大幅に大きいこと
が分かる。Table 1 shows the weight of each battery and the energy density per unit weight. It can be seen that the comparative battery D has an energy density per weight of 80 Wh / Kg, while the batteries A to C of the present invention have a significantly large energy density of 120 to 150 Wh / Kg.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【発明の効果】本発明は、正極と、リチウム金属、リチ
ウム合金或いはリチウムを吸蔵放出可能な炭素材料から
なる負極と、非水電解液とを備えた非水電解液二次電池
において、前記正極が炭素材料からなりこの炭素材料に
イオン式量が過塩素酸イオンのイオン式量以上である巨
大アニオンを正極作製段階であらかじめドープしたもの
であるので、金属酸化物を正極とする場合に比して、比
重が小さく、容量は同等以上であるため、単位重量当た
りの電池のエネルギー密度が向上し、その工業的価値は
非常に大きい。 According to the present invention, a positive electrode, lithium metal, lithium
Alloys or carbon materials that can store and release lithium
-Aqueous electrolyte secondary battery comprising negative electrode and non-aqueous electrolyte
In the above, the positive electrode is made of a carbon material,
The ionic quantity is greater than the ionic quantity of perchlorate ion
Large anions pre-doped at the cathode preparation stage
Since it is, the metal oxide as compared to the case where a positive electrode, a specific gravity is small, the capacity is equal to or higher, unit weight per
Ri energy density is improved batteries, its industrial value is very large.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の扁平型非水電解液二次電池の縦断面図
である。FIG. 1 is a longitudinal sectional view of a flat type nonaqueous electrolyte secondary battery of the present invention.
１ 負極 ２ 負極缶 ３ 負極集電体 ４ 正極 ５ 正極缶 ６ 正極集電体 ７ セパレ−タ ８ 絶縁パッキング REFERENCE SIGNS LIST 1 negative electrode 2 negative electrode can 3 negative electrode current collector 4 positive electrode 5 positive electrode can 6 positive electrode current collector 7 separator 8 insulating packing
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−36967（ＪＰ，Ａ) 特開 平５−6764（ＪＰ，Ａ) 特開 平２−82466（ＪＰ，Ａ) 特開 平２−252760（ＪＰ，Ａ) 特開 昭62−82669（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 4/02 H01M 4/04 H01M 4/58 H01M 10/40 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-36967 (JP, A) JP-A-5-6764 (JP, A) JP-A-2-82466 (JP, A) JP-A-2- 252760 (JP, A) JP-A-62-82669 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 4/02 H01M 4/04 H01M 4/58 H01M 10/40
Claims (3)
いはリチウムを吸蔵放出可能な炭素材料からなる負極
と、非水電解液とを備えた非水電解液二次電池におい
て、前記正極が炭素材料からなりこの炭素材料にイオン
式量が過塩素酸イオンのイオン式量以上である巨大アニ
オンを正極作製段階であらかじめドープしたものである
ことを特徴とする非水電解液二次電池。A positive electrode and a lithium metal, a lithium alloy or
There is a negative electrode comprising lithium from absorbing and desorbing carbon material capable, in a non-aqueous electrolyte secondary battery comprising a nonaqueous electrolyte, the positive electrode is made of carbon material ions to the carbon material
Giant ani whose formula weight is greater than or equal to that of perchlorate ion
ON is pre-doped in the positive electrode fabrication stage
Non-aqueous electrolyte secondary battery, characterized in that.
ホン酸イオン、ポリビニルスルホン酸イオン、過硫酸イ
オンより選ばれたアニオンであることを特徴とする請求
項１記載の非水電解液二次電池。Wherein said giant anion, p-toluenesulfonic acid ion, polyvinyl sulfonic acid ions, persulfate Lee
The non-aqueous electrolyte secondary battery according to claim 1 , wherein the anion is selected from ON .
ことを特徴とする請求項１記載の非水電解液二次電池。3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the carbon material of the positive electrode is coke .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3164456A JP2999857B2 (en) | 1991-07-04 | 1991-07-04 | Non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3164456A JP2999857B2 (en) | 1991-07-04 | 1991-07-04 | Non-aqueous electrolyte secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0513068A JPH0513068A (en) | 1993-01-22 |
| JP2999857B2 true JP2999857B2 (en) | 2000-01-17 |
Family
ID=15793525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3164456A Expired - Fee Related JP2999857B2 (en) | 1991-07-04 | 1991-07-04 | Non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2999857B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024042919A1 (en) * | 2022-08-23 | 2024-02-29 | パナソニックＩｐマネジメント株式会社 | Non-aqueous electrolyte secondary battery |
-
1991
- 1991-07-04 JP JP3164456A patent/JP2999857B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0513068A (en) | 1993-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |