JP2001160418A - Lithium ion rechargeable battery - Google Patents
Lithium ion rechargeable batteryInfo
- Publication number
- JP2001160418A JP2001160418A JP34220499A JP34220499A JP2001160418A JP 2001160418 A JP2001160418 A JP 2001160418A JP 34220499 A JP34220499 A JP 34220499A JP 34220499 A JP34220499 A JP 34220499A JP 2001160418 A JP2001160418 A JP 2001160418A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- positive electrode
- manganese oxide
- lithium ion
- secondary 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.)
- Abandoned
Links
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、正極を改良したリ
チウムイオン二次電池に関する。The present invention relates to a lithium ion secondary battery having an improved positive electrode.
【０００２】[0002]
【従来の技術】最近、電子機器の急激な小型化に伴な
い、その電源として小型で軽量かつ高エネルギー密度
で、さらにくり返し充放電が可能な二次電池の開発が高
まっている。このような要望を満たす二次電池として
は、リチウム二次電池が注目されている。このリチウム
二次電池は、負極であるリチウムの電位が極めて卑であ
るため、電池の電圧が高く、かつリチウムの体積、重量
エネルギー密度が高いことから、高エネルギー密度化が
可能である。2. Description of the Related Art In recent years, with the rapid miniaturization of electronic equipment, the development of secondary batteries that are small, lightweight, have a high energy density and can be repeatedly charged and discharged has been increasingly used as power sources. As a secondary battery satisfying such demands, a lithium secondary battery has attracted attention. In this lithium secondary battery, since the potential of lithium as the negative electrode is extremely low, the voltage of the battery is high, and the volume and weight energy density of lithium are high, so that high energy density can be achieved.
【０００３】従来のリチウム二次電池としては、コバル
ト酸化物、ニッケル酸化物、マンガン酸化物等の活物質
を含む正極を備えたものが知られている。特に、ＬｉＭ
ｎ2Ｏ4で代表されるスピネル型結晶構造を持つリチウム
マンガン酸化物は他の活物質に比べて環境的に無害であ
り、資源的にも豊富でかつ安価で、さらに過充電時の安
全性が高い等の優れた特性を有する。As a conventional lithium secondary battery, a lithium secondary battery having a positive electrode containing an active material such as cobalt oxide, nickel oxide, and manganese oxide is known. In particular, LiM
Lithium manganese oxide having a spinel-type crystal structure represented by n 2 O 4 is environmentally harmless compared to other active materials, is abundant and inexpensive in terms of resources, and is safe in overcharging. And has excellent characteristics such as high.
【０００４】しかしながら、ＬｉＭｎ2Ｏ4で代表される
スピネル型結晶構造を持つリチウムマンガン酸化物を活
物質として含む正極を備えたリチウム二次電池は、携帯
電話やノートブック型パソコンへの適用において、電池
容量に加えて使用条件、保存環境上の点から、高温貯蔵
における容量劣化、つまりサイクル特性に問題があっ
た。However, lithium secondary batteries having a positive electrode containing lithium manganese oxide having a spinel-type crystal structure represented by LiMn 2 O 4 as an active material have been used in mobile phones and notebook personal computers. In addition to battery capacity, in terms of use conditions and storage environment, there was a problem in capacity deterioration in high-temperature storage, that is, cycle characteristics.
【０００５】このようなことから、スピネル型リチウム
マンガン酸化物の１６ｄサイトの一部を他の遷移金属、
例えばＣｏ，Ｎｉ，Ｆｅ等で置換したＬｉＭｎ2-xＭｅx
Ｏ4（Ｍｅ＝Ｃｏ，Ｎｉ，Ｆｅ）が開発されている。[0005] From this, a part of the 16d site of the spinel-type lithium manganese oxide is replaced with another transition metal,
For example, LiMn 2-x Me x substituted with Co, Ni, Fe, etc.
O 4 (Me = Co, Ni, Fe) has been developed.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、スピネ
ル型リチウムマンガン酸化物のスピネル中のマンガンの
一部を他の遷移金属で置換した場合には、高温貯蔵によ
って生じるマンガンの溶出量が減少するものの、充電容
量も減少する。However, when part of manganese in the spinel of the spinel-type lithium manganese oxide is replaced by another transition metal, the amount of manganese eluted due to high-temperature storage is reduced. The charge capacity also decreases.
【０００７】本発明は、リチウムマンガン酸化物を含む
正極を備え、高温貯蔵における容量劣化を抑制したリチ
ウムイオン二次電池を提供しようとするものである。An object of the present invention is to provide a lithium ion secondary battery provided with a positive electrode containing lithium manganese oxide and capable of suppressing capacity deterioration during high-temperature storage.
【０００８】[0008]
【課題を解決するための手段】本発明に係わるリチウム
イオン二次電池は、活物質としてのリチウムマンガン酸
化物および五酸化二リンを含む正極と、リチウムイオン
の吸蔵・放出が可能な材料を含む負極と、非水電解液と
を具備したことを特徴とするものである。A lithium ion secondary battery according to the present invention includes a positive electrode containing lithium manganese oxide and diphosphorus pentoxide as active materials, and a material capable of inserting and extracting lithium ions. A negative electrode and a non-aqueous electrolyte are provided.
【０００９】本発明に係わるリチウムイオン二次電池に
おいて、前記五酸化二リンは、前記リチウムマンガン酸
化物に対して１．０〜６．０質量％配合することが好ま
しい。In the lithium ion secondary battery according to the present invention, it is preferable that the phosphorus pentoxide is incorporated in an amount of 1.0 to 6.0% by mass based on the lithium manganese oxide.
【００１０】[0010]
【発明の実施の形態】以下、本発明に係わるリチウムイ
オン二次電池を図１を参照して詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a lithium ion secondary battery according to the present invention will be described in detail with reference to FIG.
【００１１】例えばステンレス鋼製の正極缶１内には、
正極２が収納されている。この正極２が接する前記正極
缶１の内面には、例えばコロイダルカーボンのような集
電体を被覆するしてもよい。セパレ―タ３は、前記正極
２上に配置されている。前記セパレータ３には、非水電
解液が含浸保持されている。負極４は、前記セパレータ
３上に配置されている。前記正極缶１の開口部には、絶
縁ガスケット５を介して負極缶６が設けられており、こ
の負極缶６および前記正極缶１のかしめ加工により前記
正極缶１および前記負極缶６内に前記正極２、セパレ―
タ４および負極４が密閉されている。なお、前記負極４
が接する前記負極缶６の内面はエキスパンドメタルよう
な集電体を配置してもよい。For example, in a positive electrode can 1 made of stainless steel,
The positive electrode 2 is housed. The inner surface of the positive electrode can 1 in contact with the positive electrode 2 may be coated with a current collector such as colloidal carbon. The separator 3 is disposed on the positive electrode 2. The separator 3 is impregnated with a non-aqueous electrolyte. The negative electrode 4 is disposed on the separator 3. At the opening of the positive electrode can 1, a negative electrode can 6 is provided via an insulating gasket 5. By caulking the negative electrode can 6 and the positive electrode can 1, the negative electrode can 6 is inserted into the positive electrode can 1 and the negative electrode can 6. Positive electrode 2, separation
The anode 4 and the anode 4 are sealed. The negative electrode 4
A current collector such as an expanded metal may be disposed on the inner surface of the negative electrode can 6 where the negative electrode can contacts.
【００１２】次に、前記正極２、負極４およびセパレー
タ３および非水電解液について詳細に説明する。Next, the positive electrode 2, the negative electrode 4, the separator 3, and the non-aqueous electrolyte will be described in detail.
【００１３】（１）正極２ この正極２は、活物質としてのリチウムマンガン酸化物
（例えばＬｉＭｎ2Ｏ4）、特にスピネル型結晶構造のリ
チウムマンガン酸化物、五酸化二リン（Ｐ2Ｏ5）導電材
および結着材を含む混合物を加圧成形することにより作
製される。(1) Positive electrode 2 This positive electrode 2 is made of lithium manganese oxide (eg, LiMn 2 O 4 ) as an active material, particularly lithium manganese oxide having a spinel type crystal structure, diphosphorus pentoxide (P 2 O 5 ) It is produced by press-molding a mixture containing a conductive material and a binder.
【００１４】前記五酸化二リンは、前記リチウムマンガ
ン酸化物に対して１．０〜６．０質量％の範囲で配合さ
れることが好ましい。前記五酸化二リンの前記リチウム
マンガン酸化物に対する配合割合を１．０質量％未満に
すると、その配合効果である容量劣化の抑制を十分に達
成することが困難になる。一方、前記五酸化二リンの前
記リチウムマンガン酸化物に対する配合割合が６．０質
量％を超えると、正極自体の容量低下を招く虞がある。Preferably, the phosphorus pentoxide is blended in an amount of 1.0 to 6.0% by mass based on the lithium manganese oxide. When the mixing ratio of the phosphorus pentoxide to the lithium manganese oxide is less than 1.0% by mass, it is difficult to sufficiently achieve the effect of the mixing, that is, the suppression of the capacity deterioration. On the other hand, when the mixing ratio of the phosphorus pentoxide to the lithium manganese oxide exceeds 6.0% by mass, the capacity of the positive electrode itself may be reduced.
【００１５】前記導電材としては、例えば黒鉛等を用い
ることができる。As the conductive material, for example, graphite or the like can be used.
【００１６】前記結着材としては、例えばポリテトラフ
ルオロエチレン等を用いることができる。As the binder, for example, polytetrafluoroethylene or the like can be used.
【００１７】前記活物質と導電材と結着剤と五酸化二リ
ンとの混合割合は、９０：７：３：５〜１００：１０：
１：１にすることが好ましい。The mixing ratio of the active material, the conductive material, the binder, and diphosphorus pentoxide is 90: 7: 3: 5 to 100: 10:
Preferably, it is 1: 1.
【００１８】（２）負極４ この負極４は、リチウムイオンの吸蔵・放出が可能な材
料、導電剤および結着剤からなる混合物を加圧成形する
ことにより作製される。(2) Negative Electrode 4 The negative electrode 4 is produced by press-molding a mixture comprising a material capable of inserting and extracting lithium ions, a conductive agent and a binder.
【００１９】前記リチウムイオンの吸蔵・放出が可能な
材料としては、金属リチウム、リチウム合金または炭素
質材料を挙げることができる。この炭素質材料として
は、例えば人造黒鉛、天然黒鉛、熱分解炭素、コーク
ス、樹脂焼成体、メソフェーズ小球体、メソフェーズ系
ピッチ等を用いることができる。Examples of the material capable of inserting and extracting lithium ions include lithium metal, a lithium alloy and a carbonaceous material. As the carbonaceous material, for example, artificial graphite, natural graphite, pyrolytic carbon, coke, resin fired body, mesophase small sphere, mesophase pitch and the like can be used.
【００２０】前記導電材としては、例えばアセチレンブ
ラック、カーボンブラック等を用いることができる。As the conductive material, for example, acetylene black, carbon black or the like can be used.
【００２１】前記結着剤としては、例えばスチレン・ブ
タジエンラテックス（ＳＢＲ）、カルボキシメチルセル
ロース（ＣＭＣ）、ポリテトラフルオロエチレン（ＰＴ
ＦＥ）、ポリフッ化ビニリデン（ＰＶＤＥ）、エチレン
−プロピレン−ジエン共重合体（ＥＰＤＭ）、ニトリル
−ブタジエンゴム（ＮＢＲ）、フッ化ビニリデン−ヘキ
サフルオロプロピレン共重合体、フッ化ビニリデン−ヘ
キサフルオロプロピレン−テトラフルオロエチレン３元
系共重合体、ポリトリフルオロエチレン（ＰＴｒＦ
Ｅ）、フッ化ビニリデン−トリフルオロエチレン共重合
体、フッ化ビニリデン−テトラフルオロエチレン共重合
体等を用いることができる。Examples of the binder include styrene-butadiene latex (SBR), carboxymethylcellulose (CMC), and polytetrafluoroethylene (PTC).
FE), polyvinylidene fluoride (PVDE), ethylene-propylene-diene copolymer (EPDM), nitrile-butadiene rubber (NBR), vinylidene fluoride-hexafluoropropylene copolymer, vinylidene fluoride-hexafluoropropylene-tetra Fluoroethylene terpolymer, polytrifluoroethylene (PTrF
E), a vinylidene fluoride-trifluoroethylene copolymer, a vinylidene fluoride-tetrafluoroethylene copolymer, or the like can be used.
【００２２】（３）セパレータ３ このセパレータ３は、例えばポリプロピレン不織布、微
孔性ポリエチレンフィルム等からなる。(3) Separator 3 The separator 3 is made of, for example, a polypropylene nonwoven fabric, a microporous polyethylene film, or the like.
【００２３】（４）非水電解液 この非水電解液は、非水溶媒に電解質を溶解した組成を
有する。(4) Non-aqueous electrolyte This non-aqueous electrolyte has a composition in which an electrolyte is dissolved in a non-aqueous solvent.
【００２４】前記非水溶媒としては、例えばエチレンカ
ーボネート（ＥＣ）、プロピレンカーボネート（Ｐ
Ｃ）、ブチレンカーボネート（ＢＣ）、ジメチルカーボ
ネート（ＤＭＣ）、ジエチルカーボネート（ＤＥＣ）、
エチルメチルカーボネート（ＥＭＣ）、γ−ブチロラク
トン（γ−ＢＬ）、スルホラン、アセトニトリル、１，
２−ジメトキシエタン、１，３−ジメトキシプロパン、
ジメチルエーテル、テトラヒドロフラン（ＴＨＦ）、２
−メチルテトラヒドロフラン等を挙げることができる。
これらの溶媒は、１種または２種以上の混合物の形態で
用いることができる。Examples of the non-aqueous solvent include ethylene carbonate (EC) and propylene carbonate (P
C), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DEC),
Ethyl methyl carbonate (EMC), γ-butyrolactone (γ-BL), sulfolane, acetonitrile, 1,
2-dimethoxyethane, 1,3-dimethoxypropane,
Dimethyl ether, tetrahydrofuran (THF), 2
-Methyltetrahydrofuran and the like.
These solvents can be used in the form of one kind or a mixture of two or more kinds.
【００２５】前記電解質としては、例えばホウフッ化リ
チウム（ＬｉＢＦ4 ）、六フッ化リン酸リチウム（Ｌｉ
ＰＦ6 ）、過塩素酸リチウム（ＬｉＣｌＯ4 ）、六フッ
化砒素リチウム（ＬｉＡｓＦ6 ）、トリフルオロメタン
スルホン酸リチウム（ＬｉＣＦ3 ＳＯ3 ）、塩化アルミ
ニウムリチウム（ＬｉＡｌＣｌ）、リチウムフルオロメ
タンスルホン酸イミド［ＬｉＮ（ＣＦ3ＳＯ2）2］から
選ばれる１種または２種以上のリチウム塩を挙げること
ができる。Examples of the electrolyte include lithium borofluoride (LiBF 4 ) and lithium hexafluorophosphate (Li
PF 6 ), lithium perchlorate (LiClO 4 ), lithium arsenic hexafluoride (LiAsF 6 ), lithium trifluoromethanesulfonate (LiCF 3 SO 3 ), lithium aluminum chloride (LiAlCl), lithium fluoromethanesulfonimide [LiN (CF 3 SO 2 ) 2 ], and one or more lithium salts.
【００２６】前記電解質の非水溶媒に対する溶解量は、
０．５〜１．５モル／ｌとすることが望ましい。The amount of the electrolyte dissolved in the non-aqueous solvent is as follows:
It is desirably 0.5 to 1.5 mol / l.
【００２７】以上説明した本発明に係わるリチウムイオ
ン二次電池は、活物質としてのリチウムマンガン酸化物
および五酸化二リンを含む正極と、リチウムイオンの吸
蔵・放出が可能な材料を含む負極と、非水電解液とを具
備した構造を有する。The lithium ion secondary battery according to the present invention described above comprises a positive electrode containing lithium manganese oxide and diphosphorus pentoxide as active materials, a negative electrode containing a material capable of inserting and extracting lithium ions, And a non-aqueous electrolyte.
【００２８】このような構成によれば、前記五酸化二リ
ンが非水電解液中または外界からの微量の水分を吸収す
る作用を有するため、水分の存在による前記活物質の劣
化を抑制できる。したがって、かかる正極を備えたリチ
ウム二次電池は高温貯蔵時における容量劣化が抑制さ
れ、サイクル特性が向上される。According to such a configuration, the diphosphorus pentoxide has a function of absorbing a small amount of water in the non-aqueous electrolyte or from the outside, so that deterioration of the active material due to the presence of water can be suppressed. Therefore, in a lithium secondary battery provided with such a positive electrode, capacity deterioration during high-temperature storage is suppressed, and cycle characteristics are improved.
【００２９】特に、前記五酸化二リンを前記リチウムマ
ンガン酸化物に対して１．０〜６．０質量％の範囲で配
合された正極を備えたリチウムイオン二次電池は高温貯
蔵時における容量劣化がより効果的に抑制されるため、
さらにサイクル特性が向上される。In particular, a lithium ion secondary battery provided with a positive electrode in which the above-mentioned diphosphorus pentoxide is blended in the range of 1.0 to 6.0% by mass with respect to the above-mentioned lithium manganese oxide has a capacity deterioration during high-temperature storage. Is more effectively suppressed,
Further, the cycle characteristics are improved.
【００３０】[0030]
【実施例】以下、本発明の好ましい実施例を詳細に説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail.
【００３１】（実施例１） ＜正極の作製＞まず、リチウムマンガン酸化物粉末と導
電材としてのカーボンブラックと結着剤としてのポリテ
トラフルオロエチレン粉末と五酸化二リンとを重量比で
９０：７：３：５の割合で均一に配合した。得られた混
合物を５０００ｋｇ／ｃｍ2で直径１６ｍｍ、厚さ０．
５ｍｍのペレット状に加圧成形して正極を作製した。Example 1 <Preparation of Positive Electrode> First, a lithium manganese oxide powder, carbon black as a conductive material, polytetrafluoroethylene powder as a binder, and diphosphorus pentoxide were mixed in a weight ratio of 90: It was blended uniformly at a ratio of 7: 3: 5. The obtained mixture was weighed at 5000 kg / cm 2 , 16 mm in diameter and 0.3 mm in thickness.
A positive electrode was produced by pressure molding into a 5 mm pellet.
【００３２】＜負極の作製＞金属リチウムを打ち抜き加
工するすることにより直径１６ｍｍ、厚さ１．２ｍｍの
負極を作製した。<Preparation of Negative Electrode> A negative electrode having a diameter of 16 mm and a thickness of 1.2 mm was prepared by punching metallic lithium.
【００３３】次いで、前記正極をステンレス鋼からなる
正極缶に収納し、かつ前記負極をステンレス鋼からなる
負極缶に収納し、さらにこれら正負極間にホウフッ化リ
ン酸リチウム（ＬｉＰＦ6）をエチレンカーボネートお
よびメチルエチルカーボネートの混合溶媒（混合体積比
率２：１）に１．０モル／Ｌ溶解した組成の非水電解液
が含浸されたポリプロピレン不織布からなるセパレータ
を配置することにより前述した図１に示す構造のコイン
型リチウム二次電池を組み立てた。Next, the positive electrode was accommodated in a positive electrode can made of stainless steel, the negative electrode was accommodated in a negative electrode can made of stainless steel, and lithium borofluorophosphate (LiPF 6 ) was added between the positive and negative electrodes. FIG. 1 described above by disposing a separator made of a polypropylene nonwoven fabric impregnated with a non-aqueous electrolyte having a composition of 1.0 mol / L dissolved in a mixed solvent of methyl ethyl carbonate and methyl ethyl carbonate (mixing volume ratio 2: 1). A coin-type lithium secondary battery having a structure was assembled.
【００３４】（比較例１）正極としてのリチウムマンガ
ン酸化物粉末とカーボンブラック（導電材）とポリテト
ラフルオロエチレン粉末（結着剤）とを重量比で９０：
７：３の割合で均一に配合した混合物を直径１６ｍｍ、
厚さ０．５ｍｍのペレット状に加圧成形したものを用い
た以外、実施例１と同様で、前述した図１に示す構造の
コイン型リチウム二次電池を組み立てた。Comparative Example 1 A lithium manganese oxide powder as a positive electrode, carbon black (conductive material) and polytetrafluoroethylene powder (binder) were mixed at a weight ratio of 90:
A mixture uniformly mixed at a ratio of 7: 3 is 16 mm in diameter,
A coin-type lithium secondary battery having the above-described structure shown in FIG. 1 was assembled in the same manner as in Example 1, except that a compact formed into a pellet having a thickness of 0.5 mm was used.
【００３５】得られた実施例１および比較例１の二次電
池について、６０℃、４．３Ｖの充電状態で７日間貯蔵
した後の残存容量を調べた。その結果を下記表１に示
す。With respect to the obtained secondary batteries of Example 1 and Comparative Example 1, the remaining capacity after storage for 7 days at 60 ° C. and 4.3 V was examined. The results are shown in Table 1 below.
【００３６】[0036]
【表１】 [Table 1]
【００３７】前記表１から明らかなように正極中に五酸
化二リンを含有する実施例１の二次電池は、正極中に五
酸化二リンを含有しない比較例１の二次電池に比べて高
温保存後の残存容量が高い値を示すことがわかる。As is clear from Table 1, the secondary battery of Example 1 in which the positive electrode contains diphosphorus pentoxide is compared with the secondary battery of Comparative Example 1 in which the positive electrode does not contain diphosphorus pentoxide. It can be seen that the residual capacity after high-temperature storage shows a high value.
【００３８】[0038]
【発明の効果】以上詳述したように本発明によれば、リ
チウムマンガン酸化物を含む正極を備え、高温貯蔵にお
ける容量劣化を抑制し、携帯電話やノートブック型パソ
コン等の電源として有用な高性能のリチウムイオン二次
電池を提供することができる。As described in detail above, according to the present invention, a positive electrode containing a lithium manganese oxide is provided, which suppresses capacity deterioration during high-temperature storage, and is useful as a power source for a cellular phone, a notebook type personal computer and the like. A high performance lithium ion secondary battery can be provided.
【図１】本発明におけるコイン型リチウムイオン二次電
池を示す断面図。FIG. 1 is a sectional view showing a coin-type lithium ion secondary battery according to the present invention.
１…正極缶、 ２…正極、 ３…セパレータ、 ４…負極、 ６…負極缶。 DESCRIPTION OF SYMBOLS 1 ... Positive electrode can, 2 ... Positive electrode, 3 ... Separator, 4 ... Negative electrode, 6 ... Negative electrode can.
Claims (2)
および五酸化二リンを含む正極と、リチウムイオンの吸
蔵・放出が可能な材料を含む負極と、非水電解液とを具
備したことを特徴とするリチウムイオン二次電池。1. A positive electrode comprising a lithium manganese oxide and diphosphorus pentoxide as active materials, a negative electrode comprising a material capable of inserting and extracting lithium ions, and a non-aqueous electrolyte. Lithium ion secondary battery.
ガン酸化物に対して１．０〜６．０質量％配合されるこ
とを特徴とする請求項１記載のリチウムイオン二次電
池。2. The lithium ion secondary battery according to claim 1, wherein the phosphorus pentoxide is incorporated in an amount of 1.0 to 6.0% by mass based on the lithium manganese oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34220499A JP2001160418A (en) | 1999-12-01 | 1999-12-01 | Lithium ion rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34220499A JP2001160418A (en) | 1999-12-01 | 1999-12-01 | Lithium ion rechargeable battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001160418A true JP2001160418A (en) | 2001-06-12 |
Family
ID=18351933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34220499A Abandoned JP2001160418A (en) | 1999-12-01 | 1999-12-01 | Lithium ion rechargeable battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001160418A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100393684B1 (en) * | 2001-10-25 | 2003-08-06 | 삼성에스디아이 주식회사 | A positive active material for lithium secondary battery and a method of preparing same |
| KR100424637B1 (en) * | 2001-10-25 | 2004-03-24 | 삼성에스디아이 주식회사 | A thin film for lithium secondary battery and a method of preparing the same |
| KR100424646B1 (en) * | 2001-06-14 | 2004-03-31 | 삼성에스디아이 주식회사 | Active material for battery and a method of preparing same |
| KR100437339B1 (en) * | 2002-05-13 | 2004-06-25 | 삼성에스디아이 주식회사 | A method of preparing active material for battery and active material prepared therefrom |
| KR100437340B1 (en) * | 2002-05-13 | 2004-06-25 | 삼성에스디아이 주식회사 | Method of preparing positive active material for rechargeable lithium battery |
| KR100441520B1 (en) * | 2002-05-28 | 2004-07-23 | 삼성에스디아이 주식회사 | A positive active material for lithium secondary battery and a method of preparing same |
| JP2005149786A (en) * | 2003-11-12 | 2005-06-09 | Sanyo Electric Co Ltd | Lithium secondary battery and its manufacturing method |
| JP2008091196A (en) * | 2006-10-02 | 2008-04-17 | Samsung Sdi Co Ltd | Lithium secondary battery |
-
1999
- 1999-12-01 JP JP34220499A patent/JP2001160418A/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100424646B1 (en) * | 2001-06-14 | 2004-03-31 | 삼성에스디아이 주식회사 | Active material for battery and a method of preparing same |
| KR100393684B1 (en) * | 2001-10-25 | 2003-08-06 | 삼성에스디아이 주식회사 | A positive active material for lithium secondary battery and a method of preparing same |
| KR100424637B1 (en) * | 2001-10-25 | 2004-03-24 | 삼성에스디아이 주식회사 | A thin film for lithium secondary battery and a method of preparing the same |
| KR100437339B1 (en) * | 2002-05-13 | 2004-06-25 | 삼성에스디아이 주식회사 | A method of preparing active material for battery and active material prepared therefrom |
| KR100437340B1 (en) * | 2002-05-13 | 2004-06-25 | 삼성에스디아이 주식회사 | Method of preparing positive active material for rechargeable lithium battery |
| KR100441520B1 (en) * | 2002-05-28 | 2004-07-23 | 삼성에스디아이 주식회사 | A positive active material for lithium secondary battery and a method of preparing same |
| JP2005149786A (en) * | 2003-11-12 | 2005-06-09 | Sanyo Electric Co Ltd | Lithium secondary battery and its manufacturing method |
| JP2008091196A (en) * | 2006-10-02 | 2008-04-17 | Samsung Sdi Co Ltd | Lithium secondary battery |
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