JPH1154122A - Lithium ion secondary battery - Google Patents
Lithium ion secondary batteryInfo
- Publication number
- JPH1154122A JPH1154122A JP9221965A JP22196597A JPH1154122A JP H1154122 A JPH1154122 A JP H1154122A JP 9221965 A JP9221965 A JP 9221965A JP 22196597 A JP22196597 A JP 22196597A JP H1154122 A JPH1154122 A JP H1154122A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- composite oxide
- active material
- cobalt
- mixture
- 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.)
- Withdrawn
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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
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
(57)【要約】
【課題】 正極活物質としては、リチウムコバルト複合
酸化物、リチウムニッケル複合酸化物、リチウムマンガ
ン複合酸化物、リチウムニッケルコバルトアルミ複合酸
化物などが知られており、それぞれ特徴を有するもの
の、高価、大電流性能に劣る、大電流での放電容量が小
さい等の欠点を有し問題があった。本発明は、３種の複
合酸化物を混合使用し、リチウムマンガン複合酸化物を
基本とする安価かつ高容量でサイクル特性の優れた正極
活物質を備える電池を提供することにある。
【解決手段】 リチウム化合物を活物質とする正極を備
えたリチウムイオン電池において、活物質が、リチウム
コバルト複合酸化物、リチウムニッケルコバルトアルミ
複合酸化物及びリチウムマンガン複合酸化物の３種混合
物からなるリチウムイオン二次電池。
(57) [Summary] [Problem] As a positive electrode active material, lithium cobalt composite oxide, lithium nickel composite oxide, lithium manganese composite oxide, lithium nickel cobalt aluminum composite oxide and the like are known, each of which has characteristics. However, it has disadvantages such as being expensive, inferior in large current performance, and having a small discharge capacity at large current. An object of the present invention is to provide a battery including a cathode active material which is inexpensive, has a high capacity, and has excellent cycle characteristics based on a lithium manganese composite oxide, using a mixture of three types of composite oxides. SOLUTION: In a lithium ion battery provided with a positive electrode using a lithium compound as an active material, the active material is lithium comprising a mixture of three kinds of lithium cobalt composite oxide, lithium nickel cobalt aluminum composite oxide and lithium manganese composite oxide. Ion secondary battery.
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、リチウム化合物
を活物質とする正極を備えたリチウムイオン二次電池に
属する。The present invention relates to a lithium ion secondary battery provided with a positive electrode using a lithium compound as an active material.
【０００２】[0002]
【従来の技術】リチウムイオンを炭素などのホスト物質
（ここでホスト物質とは、リチウムイオンを吸蔵及び放
出できる物質をいう。）に吸蔵させたインターカレーシ
ョン化合物を負極材料とするリチウムイオン電池は、高
エネルギー密度を有し、且つ軽量であるうえ、金属リチ
ウムを使用していないので安全性が高い。従って、携帯
用無線電話、携帯用パソコン、携帯用ビデオカメラ等の
小型携帯電子機器用の電源として広範な利用が期待され
ている。2. Description of the Related Art Lithium-ion batteries using an intercalation compound in which lithium ions are occluded in a host material such as carbon (here, a host material is a material that can occlude and release lithium ions) are used as a negative electrode material. It has high energy density, is lightweight, and has high safety because it does not use lithium metal. Therefore, it is expected to be widely used as a power source for small portable electronic devices such as portable radio telephones, portable personal computers, and portable video cameras.
【０００３】リチウムイオン電池は、上記ホスト物質を
含む負極合剤を負極集電体に保持してなる負極板と、リ
チウムコバルト複合酸化物やリチウムニッケル複合酸化
物のようにリチウムイオンと可逆的に電気化学反応をす
る正極活物質を含む正極合剤を正極集電体に保持してな
る正極板と、電解質を保持するとともに負極板と正極板
との間に介在して両極の短絡を防止するセパレータとを
備えている。電解質は通常ＬｉＣｌＯ4 、ＬｉＰＦ6 等
のリチウム塩を溶解した非プロトン性の有機溶媒からな
るが、固体電解質でも良い。ただし、電解質が固体の場
合はセパレータは必須でない。A lithium ion battery has a negative electrode plate in which a negative electrode mixture containing the above host material is held on a negative electrode current collector, and a reversible lithium ion such as a lithium cobalt composite oxide or a lithium nickel composite oxide. A positive electrode plate that holds a positive electrode mixture containing a positive electrode active material that undergoes an electrochemical reaction on a positive electrode current collector, and holds an electrolyte and intervenes between a negative electrode plate and a positive electrode plate to prevent a short circuit between both electrodes. And a separator. The electrolyte is usually made of an aprotic organic solvent in which a lithium salt such as LiClO 4 or LiPF 6 is dissolved, but may be a solid electrolyte. However, when the electrolyte is solid, the separator is not essential.
【０００４】[0004]
【発明が解決しようとする課題】正極活物質としては、
上記のリチウムコバルト複合酸化物及びリチウムニッケ
ル複合酸化物の他に、リチウムマンガン複合酸化物も知
られている。このうちリチウムコバルト複合酸化物は、
安定した放電電圧で高い放電容量を得ることができるう
えに、放電により電子伝導性が発現する（LiCoO 2 の導
電率は10-2S ／cm） ため導電助剤は３％以下で十分性
能を発揮するが、高価である。リチウムニッケル複合酸
化物は、放電容量が最も大きいが、放電に伴って電圧が
降下するので、大電流性能に劣る。As the positive electrode active material,
In addition to the above-described lithium cobalt composite oxide and lithium nickel composite oxide, a lithium manganese composite oxide is also known. Among them, lithium cobalt composite oxide is
A high discharge capacity can be obtained at a stable discharge voltage, and electron conductivity is developed by discharging (LiCoO 2 conductivity is 10 -2 S / cm). Demonstrates, but is expensive. The lithium-nickel composite oxide has the largest discharge capacity, but is inferior in large current performance because the voltage drops with discharge.
【０００５】この点、リチウムマンガン複合酸化物は、
安価で、高温でも分解し難く安全である。従って、電気
自動車などの１０Ａｈ以上の容量が必要とされる電池に
有利である。In this regard, lithium manganese composite oxides
Inexpensive, hard to break down even at high temperatures, and safe. Therefore, it is advantageous for a battery requiring a capacity of 10 Ah or more, such as an electric vehicle.
【０００６】しかし、リチウムマンガン複合酸化物は、
電子伝導性がリチウムコバルト複合酸化物のそれより２
桁以上低いので導電助剤としての炭素などを５％以上
（通常は１０％）添加しなければならず、その結果、エ
ネルギー密度が低い。放電容量が小さい、特に大電流で
の放電容量が小さい等の欠点を有し、また充放電時の膨
張収縮による導電マトリックスの崩壊による抵抗増によ
り、サイクル特性の劣化が大きい。等の多くの課題を有
する。[0006] However, lithium manganese composite oxide is
Electron conductivity is 2 more than that of lithium cobalt composite oxide
Since it is lower than an order of magnitude, carbon or the like as a conductive additive must be added in an amount of 5% or more (usually 10%), and as a result, the energy density is low. It has disadvantages such as a small discharge capacity, particularly a small discharge capacity at a large current, and a large deterioration in cycle characteristics due to an increase in resistance due to collapse of a conductive matrix due to expansion and contraction during charging and discharging. And so on.
【０００７】また、正極活物質としてリチウムニッケル
コバルトアルミ複合酸化物を使用するものもあるが、ハ
イレート放電性能は改善されない。[0007] In some cases, a lithium nickel cobalt aluminum composite oxide is used as the positive electrode active material, but the high rate discharge performance is not improved.
【０００８】それ故、この発明の目的は、３種の複合酸
化物を混合使用することにより、リチウムマンガン複合
酸化物を基本とする安価かつ高容量でサイクル特性の優
れた正極活物質を備える電池を提供することにある。Accordingly, an object of the present invention is to provide a low-cost, high-capacity, positive-electrode active material having excellent cycle characteristics based on a lithium-manganese composite oxide by mixing and using three types of composite oxides. Is to provide.
【０００９】[0009]
【課題を解決するための手段】本発明は、リチウム化合
物を活物質とする正極を備えたリチウムイオン電池にお
いて、活物質が、リチウムコバルト複合酸化物、リチウ
ムニッケルコバルトアルミ複合酸化物及びリチウムマン
ガン複合酸化物の３種混合物からなることを特徴とす
る。また、３種混合物中のリチウムマンガン複合酸化物
の含有量を２０％以上、３種混合物中のリチウムニッケ
ルコバルトアルミ複合酸化物とリチウムコバルト複合酸
化物との合計含有量を４０重量％以上、７０重量％以
下、３種混合物中のリチウムコバルト複合酸化物の含有
量を１０重量％以上とすることを特徴とする。According to the present invention, there is provided a lithium ion battery provided with a positive electrode using a lithium compound as an active material, wherein the active material comprises a lithium cobalt composite oxide, a lithium nickel cobalt aluminum composite oxide, and a lithium manganese composite oxide. It is characterized by comprising a mixture of three kinds of oxides. In addition, the content of the lithium manganese composite oxide in the three-type mixture is 20% or more, and the total content of the lithium nickel cobalt aluminum composite oxide and the lithium cobalt composite oxide in the three-type mixture is 40% by weight or more, 70% or more. It is characterized in that the content of the lithium-cobalt composite oxide in the mixture of three or less by weight is 10% by weight or more.
【００１０】[0010]
【発明の実施の形態】本発明によるリチウムイオン電池
では、活物質がリチウムコバルト複合酸化物、リチウム
ニッケルコバルトアルミ複合酸化物及びリチウムマンガ
ン複合酸化物の３種混合物からなり、３種混合物中のリ
チウムマンガン複合酸化物の含有量を２０％以上、リチ
ウムニッケルコバルトアルミ複合酸化物とリチウムコバ
ルト複合酸化物との合計含有量を４０重量％以上、７０
重量％以下、リチウムコバルト複合酸化物の含有量を１
０重量％以上とする。このようにすることにより、リチ
ウムコバルト複合酸化物の高容量と電子伝導性、リチウ
ムニッケルコバルトアルミ複合酸化物の高容量、リチウ
ムマンガン複合酸化物の低価格と導電助剤量の低減化が
発現し、容量、サイクル、価格の全ての面でバランスの
とれた正極を得ることができ、特にハイレート特性が向
上する。安全性は低下しない。また、リチウムコバルト
複合酸化物、リチウムニッケルコバルトアルミ複合酸化
物混合系もしくは単独系より低コストとなる。BEST MODE FOR CARRYING OUT THE INVENTION In a lithium ion battery according to the present invention, the active material is composed of a mixture of lithium cobalt composite oxide, lithium nickel cobalt aluminum composite oxide and lithium manganese composite oxide. The content of manganese composite oxide is 20% or more, and the total content of lithium nickel cobalt aluminum composite oxide and lithium cobalt composite oxide is 40% by weight or more, 70% or more.
Weight% or less, the content of lithium cobalt composite oxide is 1
0% by weight or more. By doing so, the high capacity and electron conductivity of the lithium-cobalt composite oxide, the high capacity of the lithium-nickel-cobalt-aluminum composite oxide, the low price of the lithium-manganese composite oxide, and the reduction in the amount of the conductive auxiliary agent are exhibited. Thus, a positive electrode that is balanced in all aspects of capacity, cycle, and price can be obtained, and in particular, high-rate characteristics are improved. Safety does not decrease. Further, the cost is lower than that of a lithium cobalt composite oxide, a lithium nickel cobalt aluminum composite oxide mixed system or a single system.
【００１１】３種混合物中のリチウムマンガン複合酸化
物の含有量が２０重量％未満であると実電池においてリ
チウムマンガン複合酸化物の安全性が発揮され難くなる
ので、２０重量％以上が好ましい。また、リチウムニッ
ケルコバルトアルミ複合酸化物とリチウムコバルト複合
酸化物との合計含有量は４０重量％以上が好ましい。こ
れ以上であるとき、特に大電流放電容量が高くなるから
である。If the content of the lithium-manganese composite oxide in the three-component mixture is less than 20% by weight, the safety of the lithium-manganese composite oxide is hardly exhibited in an actual battery. The total content of the lithium nickel cobalt aluminum composite oxide and the lithium cobalt composite oxide is preferably 40% by weight or more. This is because, when it is more than this, the large current discharge capacity becomes particularly high.
【００１２】更にリチウムマンガン複合酸化物の平均粒
径をｄｍ、リチウムニッケルコバルトアルミ複合酸化物
及びリチウムコバルト複合酸化物の各平均粒径のうちｄ
ｍに近い方の平均粒径をｄｎｃとするとき、ｄｍとｄｎ
ｃとの差が０．５μｍ以上であると好ましい。粒径に差
をつけることにより、最密に充填され、その結果結着剤
を減らすことができるからである。The average particle diameter of the lithium manganese composite oxide is dm, and the average particle diameter of the lithium nickel cobalt aluminum composite oxide and the lithium cobalt composite oxide is d.
When the average particle size closer to m is dnc, dm and dn
It is preferable that the difference from c is 0.5 μm or more. This is because by providing a difference in the particle size, the particles can be packed most closely, and as a result, the binder can be reduced.
【００１３】[0013]
［実施例１］これは、本発明のビーカー試験での実施例
である。平均粒径１μｍの市販のＬｉＭｎ2 Ｏ4 、同
１．５μｍの市販のＬｉＣｏＯ2 及び同０．７μｍの市
販のＬｉＮｉ(1-X-Y) ＣｏX ＡｌY Ｏ2 を表１に示す割
合で混合し、混合物９１重量部に結着剤であるポリフッ
化ビニリデン６重量部と導電剤であるアセチレンブラッ
ク３重量部を混合してＮ−メチル−２−ピロリドンを適
宜加えペースト状に調整した後、その合剤を厚さ２０μ
ｍのアルミニウム箔の両面に塗布し、乾燥し加圧するこ
とによって、正極板を作成した。[Example 1] This is an example of the beaker test of the present invention. A commercially available LiMn 2 O 4 having an average particle diameter of 1 μm, a commercially available LiCoO 2 having an average particle diameter of 1.5 μm, and a commercially available LiNi (1-XY) Co X Al Y O 2 having an average particle diameter of 0.7 μm were mixed at a ratio shown in Table 1. Then, 91 parts by weight of the mixture were mixed with 6 parts by weight of polyvinylidene fluoride as a binder and 3 parts by weight of acetylene black as a conductive agent, and N-methyl-2-pyrrolidone was added as appropriate to form a paste. 20μ thick agent
m was applied to both sides of an aluminum foil, dried and pressed to form a positive electrode plate.
【００１４】この正極板をＬｉ金属からなる負極板とと
もに、ＬｉＣｌＯ4 を１ｍｏｌ／ｌ含むエチレンカーボ
ネート：ジエチルカーボネート＝１：１（体積比）の混
合液からなる電解液に浸けた。The positive electrode plate and the negative electrode plate made of Li metal were immersed in an electrolytic solution comprising a mixed solution of ethylene carbonate: diethyl carbonate = 1: 1 (volume ratio) containing 1 mol / l of LiClO 4 .
【００１５】正極板に１ｍＡで終止電圧４．１Ｖまでの
定電流充電した後、１ｍＡ（放電率０．２Ｃ）、５ｍＡ
（同１Ｃ）又は１０ｍＡ（同２Ｃ）の定電流で終止電圧
３．０Ｖまで放電した。そのときの放電容量を表１に併
記するとともに図１に打点した。図１で縦軸が放電容
量、横軸が上記混合物中の（Ｎｉ＋Ｃｏ）割合を示す。
また、表１で（Ｎｉ＋Ｃｏ）欄、ＮｉＣｏＡｌ欄、Ｃｏ
欄及びＭｎ欄は、各々（ＬｉＮｉ(1-X-Y) ＣｏX ＡｌY
Ｏ2 ＋ＬｉＣｏＯ2 ）、ＬｉＮｉ(1-X-Y) ＣｏX ＡｌY
Ｏ2 、ＬｉＣｏＯ2 及びＬｉＭｎ2 Ｏ4 の重量比を示
す。The positive electrode was charged at a constant current of 1 mA up to a final voltage of 4.1 V, and then charged at 1 mA (discharge rate 0.2 C) and 5 mA.
The battery was discharged to a final voltage of 3.0 V at a constant current of (1C) or 10 mA (2C). The discharge capacity at that time is also shown in Table 1 and plotted in FIG. In FIG. 1, the vertical axis shows the discharge capacity, and the horizontal axis shows the (Ni + Co) ratio in the mixture.
In Table 1, (Ni + Co) column, NiCoAl column, Co
Column and Mn column are (LiNi (1-XY) Co X Al Y
O 2 + LiCoO 2 ), LiNi (1-XY) Co X Al Y
The weight ratio of O 2 , LiCoO 2 and LiMn 2 O 4 is shown.
【００１６】[0016]
【表１】 図１に見られるように、ＬｉＣｏＯ2 及びＬｉＮｉ
(1-X-Y) ＣｏX ＡｌY Ｏ2の合計含有量が４０重量％以
上で放電容量が高くなった。特にＬｉＣｏＯ2 の含有量
が２０重量％以上で放電率２Ｃの高率放電特性が良かっ
た。[Table 1] As seen in FIG. 1, LiCoO 2 and LiNi
The discharge capacity was increased when the total content of (1-XY) Co X Al Y O 2 was 40% by weight or more. In particular, when the LiCoO 2 content was 20% by weight or more, the high-rate discharge characteristics with a discharge rate of 2C were good.
【００１７】［実施例２］これは、本発明の実電池での
実施例である。正極板は、実施例１で作成したものを使
用した。負極板４は、厚さ２０μｍの銅箔からなる集電
体の両面に、ホスト物質としてのグラファイト（黒鉛）
８６部と結着剤としてのポリフッ化ビニリデン１４部と
を混合しペースト状に調製した合剤を塗布し、乾燥し加
圧することによって製作された。[Embodiment 2] This is an embodiment of an actual battery of the present invention. The positive electrode plate used in Example 1 was used. The negative electrode plate 4 is made of graphite (graphite) as a host material on both surfaces of a current collector made of a copper foil having a thickness of 20 μm.
86 parts and 14 parts of polyvinylidene fluoride as a binder were mixed, and a mixture prepared in the form of a paste was applied, dried, and pressed to produce.
【００１８】セパレータは、ポリエチレン微多孔膜であ
る。また、電解液は、ＬｉＰＦ6 を１ｍｏｌ／ｌ含むエ
チレンカーボネート：ジエチルカーボネート＝１：１
（体積比）の混合液である。The separator is a microporous polyethylene membrane. The electrolyte was ethylene carbonate: diethyl carbonate = 1: 1 containing 1 mol / l of LiPF 6.
(Volume ratio).
【００１９】電池要素の各々の寸法は、正極板が厚さ２
００μｍ、幅１７５ｍｍで、セパレータが厚さ３５μ
ｍ、幅２００ｍｍで、負極板が厚さ１５０μｍ、幅１８
０ｍｍとなっており、順に重ね合わせてポリエチレンの
巻芯を中心として、その周囲に長円渦状に巻いた後、電
池ケースに収納した。電池ケースは、直径６６ｍｍ、高
さ２２０ｍｍの円筒形で、材質はステンレス３０４であ
る。電池ケースの蓋上部には電解液注入用の孔が、底部
には安全弁が各々設けられている。The dimensions of each of the battery elements are such that the positive electrode plate has a thickness of 2 mm.
00 μm, width 175 mm, separator 35 μm thick
m, width 200 mm, negative plate 150 μm thick, width 18
The length was 0 mm, and they were superposed in order and wound around the polyethylene core in an elliptical shape around the core, and then stored in a battery case. The battery case has a cylindrical shape with a diameter of 66 mm and a height of 220 mm, and is made of stainless steel 304. A hole for injecting an electrolyte is provided at the top of the lid of the battery case, and a safety valve is provided at the bottom.
【００２０】電池の側面から釘を貫通させたところ、正
極活物質中のＬｉＭｎ2 Ｏ4 含有量が１０重量％以下の
電池で安全弁が作動した。２０重量％以上のものは作動
しなかった。When a nail was penetrated from the side of the battery, the safety valve operated with a battery having a LiMn 2 O 4 content of 10% by weight or less in the positive electrode active material. Those with more than 20% by weight did not work.
【００２１】[0021]
【発明の効果】安価で安全で高率放電容量の高い電池を
得ることができる。According to the present invention, a battery which is inexpensive, safe and has a high discharge capacity can be obtained.
【図１】ＬｉＣｏＯ2 及びＬｉＮｉ(1-X-Y) ＣｏX Ａｌ
Y Ｏ2 の合計含有量と放電容量との関係を測定したグラ
フFIG. 1 LiCoO 2 and LiNi (1-XY) Co X Al
Graph measuring the relationship between the total content of Y 2 O 2 and the discharge capacity
Claims (4)
えたリチウムイオン電池において、活物質が、リチウム
コバルト複合酸化物、リチウムニッケルコバルトアルミ
複合酸化物及びリチウムマンガン複合酸化物の３種混合
物からなることを特徴とするリチウムイオン二次電池。1. A lithium ion battery provided with a positive electrode using a lithium compound as an active material, wherein the active material comprises a mixture of three kinds of lithium cobalt composite oxide, lithium nickel cobalt aluminum composite oxide, and lithium manganese composite oxide. A lithium ion secondary battery characterized by the above-mentioned.
化物の含有量が２０％以上である請求項１に記載のリチ
ウムイオン二次電池。2. The lithium ion secondary battery according to claim 1, wherein the content of the lithium manganese composite oxide in the three-type mixture is 20% or more.
トアルミ複合酸化物とリチウムコバルト複合酸化物との
合計含有量が、４０重量％以上、７０重量％以下である
請求項１に記載のリチウムイオン二次電池。3. The lithium ion secondary battery according to claim 1, wherein the total content of the lithium-nickel-cobalt-aluminum composite oxide and the lithium-cobalt composite oxide in the triple mixture is 40% by weight or more and 70% by weight or less. Next battery.
化物の含有量が１０重量％以上である請求項３に記載の
リチウムイオン二次電池。4. The lithium ion secondary battery according to claim 3, wherein the content of the lithium-cobalt composite oxide in the three-component mixture is 10% by weight or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9221965A JPH1154122A (en) | 1997-08-04 | 1997-08-04 | Lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9221965A JPH1154122A (en) | 1997-08-04 | 1997-08-04 | Lithium ion secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1154122A true JPH1154122A (en) | 1999-02-26 |
| JPH1154122A5 JPH1154122A5 (en) | 2005-05-26 |
Family
ID=16774947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9221965A Withdrawn JPH1154122A (en) | 1997-08-04 | 1997-08-04 | Lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1154122A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000052773A1 (en) * | 1999-03-01 | 2000-09-08 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary cell |
| JP2006523368A (en) * | 2003-04-03 | 2006-10-12 | ヴァレンス テクノロジー インコーポレーテッド | Electrodes containing mixed particles |
| JP2007258122A (en) * | 2006-03-27 | 2007-10-04 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| JP2007294397A (en) * | 2006-03-27 | 2007-11-08 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| JP2007294396A (en) * | 2006-03-27 | 2007-11-08 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| KR101370675B1 (en) * | 2006-03-20 | 2014-03-04 | 히다치 막셀 가부시키가이샤 | Non-aqueous secondary battery and method of using the same |
-
1997
- 1997-08-04 JP JP9221965A patent/JPH1154122A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000052773A1 (en) * | 1999-03-01 | 2000-09-08 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary cell |
| US6746800B1 (en) | 1999-03-01 | 2004-06-08 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary battery |
| EP1174937A4 (en) * | 1999-03-01 | 2006-05-17 | Sanyo Electric Co | Nonaqueous electrolyte secondary cell |
| EP1885011A3 (en) * | 1999-03-01 | 2008-02-20 | Sanyo Electric Co., Ltd. | Nonaqueous electrolyte secondary battery |
| JP2006523368A (en) * | 2003-04-03 | 2006-10-12 | ヴァレンス テクノロジー インコーポレーテッド | Electrodes containing mixed particles |
| KR101370675B1 (en) * | 2006-03-20 | 2014-03-04 | 히다치 막셀 가부시키가이샤 | Non-aqueous secondary battery and method of using the same |
| US9077035B2 (en) | 2006-03-20 | 2015-07-07 | Hitachi Maxell, Ltd. | Nonaqueous secondary battery and method of using the same |
| JP2007258122A (en) * | 2006-03-27 | 2007-10-04 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| JP2007294397A (en) * | 2006-03-27 | 2007-11-08 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| JP2007294396A (en) * | 2006-03-27 | 2007-11-08 | Hitachi Maxell Ltd | Non-aqueous secondary battery and method of using the same |
| US8137840B2 (en) | 2006-03-27 | 2012-03-20 | Hitachi Maxell Energy, Ltd. | Nonaqueous secondary battery and method of using the same |
| KR101369322B1 (en) * | 2006-03-27 | 2014-03-04 | 히다치 막셀 가부시키가이샤 | Non-aqueous secondary battery and method of using the same |
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