JP2003142091A - Nonaqueous electrolyte secondary battery - Google Patents
Nonaqueous electrolyte secondary batteryInfo
- Publication number
- JP2003142091A JP2003142091A JP2001336620A JP2001336620A JP2003142091A JP 2003142091 A JP2003142091 A JP 2003142091A JP 2001336620 A JP2001336620 A JP 2001336620A JP 2001336620 A JP2001336620 A JP 2001336620A JP 2003142091 A JP2003142091 A JP 2003142091A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- positive electrode
- secondary battery
- electrolyte secondary
- composite oxide
- 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.)
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Classifications
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- 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
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、正極と負極と非
水電解質とを備えた非水電解質二次電池に係り、特に、
正極に用いる材料を改善し、過放電になるのを容易に制
御できるようにした点に特徴を有するものである。TECHNICAL FIELD The present invention relates to a non-aqueous electrolyte secondary battery provided with a positive electrode, a negative electrode and a non-aqueous electrolyte, and more particularly,
The material is characterized in that the material used for the positive electrode is improved so that over-discharge can be easily controlled.
【０００２】[0002]
【従来の技術】近年、高出力，高エネルギー密度の新型
電池の１つとして、非水電解質を用いて、リチウムの酸
化，還元を利用した高起電力の非水電解質二次電池が利
用されるようになった。2. Description of the Related Art In recent years, a high electromotive force non-aqueous electrolyte secondary battery utilizing oxidation and reduction of lithium using a non-aqueous electrolyte is used as one of new type batteries with high output and high energy density. It became so.
【０００３】ここで、このような非水電解質二次電池に
おいては、その正極の材料として、リチウムイオンの吸
蔵，放出が可能なリチウム・遷移金属複合酸化物が用い
られており、一般には、リチウム・コバルト複合酸化物
のＬｉＣｏＯ2 等が広く利用されている。In such a non-aqueous electrolyte secondary battery, a lithium-transition metal composite oxide capable of absorbing and desorbing lithium ions is used as a material for its positive electrode, and generally lithium. -Cobalt composite oxides such as LiCoO 2 are widely used.
【０００４】しかし、リチウム・コバルト複合酸化物の
原料となるコバルトは資源の埋蔵量が少なく、高価であ
るため、正極の材料として、他のリチウム・遷移金属複
合酸化物を使用することが要望され、このようなリチウ
ム・遷移金属複合酸化物として、安価でかつ資源の埋蔵
量の豊富な材料であるマンガンを用いたリチウム・マン
ガン複合酸化物が検討されるようになった。However, since cobalt, which is a raw material of the lithium-cobalt composite oxide, has a small reserve of resources and is expensive, it is desired to use another lithium-transition metal composite oxide as a material for the positive electrode. As such a lithium / transition metal composite oxide, a lithium / manganese composite oxide using manganese, which is a material that is inexpensive and has a rich reserve of resources, has been studied.
【０００５】しかし、このようなリチウム・マンガン複
合酸化物を非水電解質二次電池における正極の材料に使
用した場合、この非水電解質二次電池において充放電を
繰り返して行うと、リチウム・マンガン複合酸化物から
マンガンが溶出して次第に容量が低下し、充放電サイク
ル特性が悪いという問題があった。However, when such a lithium-manganese composite oxide is used as a material for a positive electrode in a non-aqueous electrolyte secondary battery, the lithium-manganese composite oxide is obtained by repeatedly charging and discharging the non-aqueous electrolyte secondary battery. There is a problem that manganese is eluted from the oxide and the capacity is gradually reduced, resulting in poor charge / discharge cycle characteristics.
【０００６】このため、近年においては、特許第３０２
４６３６号公報に示されるように、非水電解質二次電池
における正極の材料に、リチウム・マンガン複合酸化物
とリチウム・ニッケル複合酸化物とを混合させたものを
用い、充放電によってリチウム・マンガン複合酸化物か
らマンガンが溶出するのを抑制して、充放電サイクル特
性を向上させることが提案されている。Therefore, in recent years, the patent No. 302
As disclosed in Japanese Patent No. 4636, a mixture of a lithium-manganese composite oxide and a lithium-nickel composite oxide is used as a material for a positive electrode in a non-aqueous electrolyte secondary battery, and a lithium-manganese composite is formed by charging and discharging. It has been proposed to suppress the elution of manganese from the oxide and improve the charge / discharge cycle characteristics.
【０００７】しかし、上記のように正極の材料に、リチ
ウム・マンガン複合酸化物とリチウム・ニッケル複合酸
化物とを混合させたものを用いた場合、放電末期におい
て正極の電位が急激に低下し、十分な容量を有する非水
電解質二次電池を得るために放電深度を深くすると、過
放電になりやすく、これにより非水電解質二次電池が劣
化して容量が著しく低下し、充放電サイクル特性が著し
く低下するという問題があった。However, when the material of the positive electrode as described above is a mixture of the lithium-manganese composite oxide and the lithium-nickel composite oxide, the potential of the positive electrode drops sharply at the end of discharge, If the depth of discharge is increased in order to obtain a non-aqueous electrolyte secondary battery having a sufficient capacity, over-discharge tends to occur, which causes the non-aqueous electrolyte secondary battery to deteriorate and its capacity to significantly decrease, resulting in charge / discharge cycle characteristics. There was a problem of a significant decrease.
【０００８】[0008]
【発明が解決しようとする課題】この発明は、正極と負
極と非水電解質とを備えた非水電解質二次電池における
上記のような様々な問題を解決することを課題とするも
のであり、特に、正極の材料にリチウム・マンガン複合
酸化物とリチウム・ニッケル複合酸化物とを用いた場合
において、放電末期における正極の電位が急激に低下す
るのを抑制し、十分な容量を有する非水電解質二次電池
を得るために放電深度を深くした場合においても、過放
電による容量低下を容易に制御することができると共
に、充放電サイクル特性にも優れた非水電解質二次電池
が得られるようにすることを課題とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above various problems in a non-aqueous electrolyte secondary battery having a positive electrode, a negative electrode and a non-aqueous electrolyte, In particular, when a lithium-manganese composite oxide and a lithium-nickel composite oxide are used as the material for the positive electrode, a nonaqueous electrolyte having a sufficient capacity is suppressed by suppressing a sharp decrease in the positive electrode potential at the end of discharge. Even when the depth of discharge is increased to obtain a secondary battery, it is possible to easily control the capacity decrease due to over-discharging and to obtain a non-aqueous electrolyte secondary battery with excellent charge-discharge cycle characteristics. The task is to do so.
【０００９】[0009]
【課題を解決するための手段】この発明においては、上
記のような課題を解決するため、正極と負極と非水電解
質とを備えた非水電解質二次電池において、上記の正極
の材料に、リチウム・マンガン複合酸化物とリチウム・
ニッケル複合酸化物とを混合焼結させた焼結材料を用い
るようにしたのである。According to the present invention, in order to solve the above problems, in a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, the material of the positive electrode is: Lithium-manganese composite oxide and lithium
That is, a sintering material obtained by mixing and sintering the nickel composite oxide was used.
【００１０】そして、この発明における非水電解質二次
電池のように、正極の材料に、リチウム・マンガン複合
酸化物とリチウム・ニッケル複合酸化物とを混合焼結さ
せた焼結材料を用いると、リチウム・マンガン複合酸化
物とリチウム・ニッケル複合酸化物とを単に混合させた
だけのものを用いる場合に比べて、放電末期における正
極の電位の低下が緩やかになり、放電深度を深くした場
合においても、過放電による容量低下を容易に制御する
ことができ、充放電サイクル特性に優れた非水電解質二
次電池が得られるようになる。Then, as in the non-aqueous electrolyte secondary battery of the present invention, if a sintered material obtained by mixing and sintering a lithium-manganese composite oxide and a lithium-nickel composite oxide is used as the material of the positive electrode, Compared to the case of using a mixture of lithium-manganese composite oxide and lithium-nickel composite oxide, the decrease in the potential of the positive electrode at the end of discharge becomes slower, and even when the discharge depth is deepened. In addition, it is possible to easily control the capacity decrease due to over-discharge, and to obtain a non-aqueous electrolyte secondary battery having excellent charge / discharge cycle characteristics.
【００１１】ここで、正極の材料に用いる上記のリチウ
ム・ニッケル複合酸化物としては、例えば、組成式Ｌｉ
a Ｎｉx Ｍ1-x Ｏ2 （但し、Ｍは、Ｂ，Ｍｇ，Ａｌ，Ｔ
ｉ，Ｍｎ，Ｖ，Ｆｅ，Ｃｏ，Ｃｕ，Ｚｎ，Ｇａ，Ｙ，Ｚ
ｒ，Ｎｂ，Ｍｏ，Ｉｎから選択される１種以上の遷移元
素であり、１≦ａ≦１．５，０＜ｘ≦１を満たす。）で
表されるものを使用することができ、特に、組成式Ｌｉ
a Ｎｉx Ｃｏy ＭｎzＯ2 （但し、１≦ａ≦１．５，０
＜ｘ≦１，０≦ｙ≦１，０≦ｚ≦１を満たす。）で表さ
れるものを使用することが好ましい。Here, as the above-mentioned lithium-nickel composite oxide used for the material of the positive electrode, for example, the composition formula Li
a Ni x M 1-x O 2 (where M is B, Mg, Al, T
i, Mn, V, Fe, Co, Cu, Zn, Ga, Y, Z
It is one or more kinds of transition elements selected from r, Nb, Mo and In, and satisfies 1 ≦ a ≦ 1.5 and 0 <x ≦ 1. ), The composition formula Li can be used.
a Ni x Co y Mn z O 2 (however, 1 ≦ a ≦ 1.5,0
<X ≦ 1,0 ≦ y ≦ 1,0 ≦ z ≦ 1 is satisfied. It is preferable to use the one represented by
【００１２】また、正極の材料に用いる上記のリチウム
・マンガン複合酸化物としては、例えば、組成式Ｌｉ
1+b Ｍｎc Ｍ’d Ｏ4 （但し、Ｍ’は、Ｍｇ，Ａｌ，Ｔ
ｉ，Ｆｅ，Ｃｒからなる群から選択される１種以上の元
素であり、０≦ｂ≦１，１≦ｃ≦２，０≦ｄ≦１を満た
す。）で表されるものを使用することができ、特に、組
成式Ｌｉ1+b Ｍｎc Ｍ’dＯ4 （但し、０≦ｂ≦０．
５，１≦ｃ≦２，０≦ｄ≦１を満たす。）で表されるも
のを使用することが好ましい。As the above-mentioned lithium-manganese composite oxide used for the material of the positive electrode, for example, the composition formula Li
1 + b Mn c M'd O 4 (where M'is Mg, Al, T
It is at least one element selected from the group consisting of i, Fe, and Cr, and satisfies 0 ≦ b ≦ 1,1 ≦ c ≦ 2,0 ≦ d ≦ 1. ) Can be used, and in particular, the composition formula Li 1 + b Mn c M ′ d O 4 (provided that 0 ≦ b ≦ 0.
5, 1 ≦ c ≦ 2, 0 ≦ d ≦ 1 are satisfied. It is preferable to use the one represented by
【００１３】また、上記のリチウム・ニッケル複合酸化
物とリチウム・マンガン複合酸化物とを混合させるにあ
たっては、リチウム・ニッケル複合酸化物とリチウム・
マンガン複合酸化物との重量比を１：９〜９：１の範囲
にすることが好ましく、より好ましくは、６：４になる
ようにする。In mixing the lithium-nickel composite oxide and the lithium-manganese composite oxide, the lithium-nickel composite oxide and the lithium-manganese composite oxide are mixed.
The weight ratio with the manganese composite oxide is preferably in the range of 1: 9 to 9: 1, and more preferably 6: 4.
【００１４】また、このようにリチウム・ニッケル複合
酸化物とリチウム・マンガン複合酸化物とを混合させて
焼結させるにあたり、焼成温度が低いと、リチウム・ニ
ッケル複合酸化物とリチウム・マンガン複合酸化物とが
十分に焼結されない一方、焼成温度が高くなり過ぎる
と、リチウム・ニッケル複合酸化物やリチウム・マンガ
ン複合酸化物における酸素が脱離して劣化するため、焼
成温度を２００〜９００℃、好ましくは４００〜６００
℃にして焼結させるようにする。When the lithium-nickel composite oxide and the lithium-manganese composite oxide are mixed and sintered as described above, if the firing temperature is low, the lithium-nickel composite oxide and the lithium-manganese composite oxide are mixed. When and are not sufficiently sintered, if the firing temperature is too high, oxygen in the lithium-nickel composite oxide or the lithium-manganese composite oxide is desorbed and deteriorates. Therefore, the firing temperature is 200 to 900 ° C., preferably 400-600
C. and sinter.
【００１５】[0015]
【実施例】以下、この発明に係る非水電解質二次電池に
ついて、実施例を挙げて具体的に説明すると共に、この
実施例における非水電解質二次電池の場合、放電末期に
おいて正極の電位が急激に低下するのが抑制されること
を、比較例を挙げて明らかにする。なお、この発明にお
ける非水電解質二次電池は、下記の実施例に示したもの
に限定されず、その要旨を変更しない範囲において適宜
変更して実施できるものである。EXAMPLES Hereinafter, the non-aqueous electrolyte secondary battery according to the present invention will be specifically described with reference to Examples, and in the case of the non-aqueous electrolyte secondary battery in this Example, the positive electrode potential at the end of discharge is It will be clarified that the sharp decrease is suppressed by giving a comparative example. The non-aqueous electrolyte secondary battery according to the present invention is not limited to the ones shown in the following examples, and can be implemented by appropriately changing it without departing from the scope of the invention.
【００１６】（実施例１）実施例１においては、正極を
作製するにあたって、ＬｉＮｉ0.4 Ｃｏ0.3 Ｍｎ 0.3 Ｏ
2 とＬｉ1.1 Ｍｎ1.9 Ｏ4 とを６：４の重量比でらいか
い混合させ、これをペレット状に成形した後、５００℃
の大気雰囲気中で焼成してＬｉＮｉ0.4 Ｃｏ0.3 Ｍｎ
0.3 Ｏ2 とＬｉ1.1 Ｍｎ1.9 Ｏ4 とが混合焼結された焼
結材料を得た。(Example 1) In Example 1, the positive electrode was
In manufacturing, LiNi0.4Co0.3Mn 0.3O
2And Li1.1Mn1.9OFourDo you want to have a 6: 4 weight ratio?
And mix it to form pellets, then 500 ℃
In the air atmosphere of LiNi0.4Co0.3Mn
0.3O2And Li1.1Mn1.9OFourAnd mixed and sintered
I got the binding material.
【００１７】そして、この焼結材料と導電剤の人造黒鉛
とを９：１の重量比で混合させて正極合剤を得た。Then, the sintered material and artificial graphite as a conductive agent were mixed at a weight ratio of 9: 1 to obtain a positive electrode mixture.
【００１８】次いで、この正極合剤と結着剤のポリフッ
化ビニリデンとが９５：５の重量比になるようにして、
この正極合剤にポリフッ化ビニリデンが５重量％のＮ−
メチル−２−ピロリドン溶液を加え、これを混練してス
ラリーを調製し、このスラリーを厚み２０μｍのアルミ
ニウム箔の両面にドクターブレード法により塗布し、こ
れを１５０℃で２時間真空乾燥させて正極を作製した。Next, the positive electrode mixture and the polyvinylidene fluoride binder are set in a weight ratio of 95: 5,
Polyvinylidene fluoride containing 5% by weight of N-
Methyl-2-pyrrolidone solution was added, and this was kneaded to prepare a slurry, and this slurry was applied on both sides of an aluminum foil having a thickness of 20 μm by the doctor blade method, and this was vacuum dried at 150 ° C. for 2 hours to give a positive electrode. It was made.
【００１９】（比較例１）比較例１においては、正極を
作製するにあたって、上記の実施例１の場合と同様に、
ＬｉＮｉ0.4 Ｃｏ0.3 Ｍｎ0.3 Ｏ2 とＬｉ1.1 Ｍｎ1.9
Ｏ4 とを６：４の重量比でらいかい混合させる一方、こ
れを焼成させないで使用し、その後は、上記の実施例１
の場合と同様にして正極を作製した。(Comparative Example 1) In Comparative Example 1, in producing a positive electrode, as in the case of Example 1 described above,
LiNi 0.4 Co 0.3 Mn 0.3 O 2 and Li 1.1 Mn 1.9
O 4 was mixed gently in a weight ratio of 6: 4, while it was used without being calcined and thereafter used in Example 1 above.
A positive electrode was prepared in the same manner as in.
【００２０】そして、図１に示すように、上記の実施例
１及び比較例１において作製した各正極を作用極１１に
用いる一方、負極となる対極１２と参照極１３とにそれ
ぞれ金属リチウムを用い、また非水電解液１４として
は、エチレンカーボネートとジエチルカーボネートとを
１：１の体積比で混合させた混合溶媒にヘキサフルオロ
リン酸リチウムＬｉＰＦ6 を１ｍｏｌ／ｌの割合で溶解
させたものを使用して、実施例１及び比較例１の各試験
用電池を作製した。As shown in FIG. 1, the positive electrodes prepared in Example 1 and Comparative Example 1 are used for the working electrode 11, while metallic lithium is used for the counter electrode 12 and the reference electrode 13 which are negative electrodes. As the non-aqueous electrolyte solution 14, used is one in which lithium hexafluorophosphate LiPF 6 is dissolved at a ratio of 1 mol / l in a mixed solvent in which ethylene carbonate and diethyl carbonate are mixed at a volume ratio of 1: 1. Then, the test batteries of Example 1 and Comparative Example 1 were produced.
【００２１】そして、上記の各正極を作用極１１に使用
した実施例１及び比較例１の各試験用電池において、充
電電流０．７５ｍＡ／ｃｍ2 で充電終止電圧が４．３Ｖ
になるまで充電させた後、充電電流０．２５ｍＡ／ｃｍ
2 で充電終止電圧が４．３Ｖになるまで充電させた。そ
の後、実施例１及び比較例１の各試験用電池を放電電流
０．７５ｍＡ／ｃｍ2 で放電終止電圧が３．１Ｖになる
まで放電させ、放電時における参照極１３に対する各正
極１１の電位と、放電深度（％）との関係を調べ、実施
例１の試験用電池における結果を実線で、比較例１の試
験用電池における結果を破線で図２に示した。In each of the test batteries of Example 1 and Comparative Example 1 in which each of the above positive electrodes was used as the working electrode 11, the charging end voltage was 4.3 V at a charging current of 0.75 mA / cm 2.
Charging current of 0.25mA / cm
It was charged at 2 until the end-of-charge voltage reached 4.3V. After that, the test batteries of Example 1 and Comparative Example 1 were discharged at a discharge current of 0.75 mA / cm 2 until the discharge end voltage became 3.1 V, and the potential of each positive electrode 11 with respect to the reference electrode 13 at the time of discharge. The results for the test battery of Example 1 are shown by solid lines, and the results for the test battery of Comparative Example 1 are shown by broken lines in FIG.
【００２２】この結果、実施例１の試験用電池において
は、放電深度が１００％に近づいた時点における正極の
電位の低下が、比較例１の試験用電池に比べて緩やかに
なっており、実施例１の試験用電池の場合、比較例１の
試験用電池に比べて、過放電になるのを容易に抑制する
ことができた。As a result, in the test battery of Example 1, the decrease in the potential of the positive electrode when the depth of discharge approached 100% was slower than that of the test battery of Comparative Example 1. In the case of the test battery of Example 1, over-discharging could be suppressed more easily than the test battery of Comparative Example 1.
【００２３】[0023]
【発明の効果】以上詳述したように、この発明における
非水電解質二次電池においては、その正極の材料に、リ
チウム・マンガン複合酸化物とリチウム・ニッケル複合
酸化物とを混合焼結させた焼結材料を用いるようにした
ため、リチウム・マンガン複合酸化物とリチウム・ニッ
ケル複合酸化物とを単に混合させただけのものを用いた
場合に比べて、放電末期における正極の電位の低下が緩
やかになった。As described above in detail, in the non-aqueous electrolyte secondary battery according to the present invention, the material of the positive electrode is the mixture of the lithium-manganese composite oxide and the lithium-nickel composite oxide and sintering. Since the sintering material is used, the decrease in the positive electrode potential at the end of discharge is slower than in the case of using a mixture of lithium-manganese composite oxide and lithium-nickel composite oxide. became.
【００２４】この結果、この発明における非水電解質二
次電池においては、放電深度を深くした場合において
も、過放電による容量低下を容易に制御することがで
き、充放電サイクル特性に優れた非水電解質二次電池が
得られるようになった。As a result, in the non-aqueous electrolyte secondary battery of the present invention, even when the depth of discharge is increased, the capacity decrease due to over-discharge can be easily controlled, and the non-aqueous electrolyte excellent in charge / discharge cycle characteristics can be obtained. An electrolyte secondary battery has come to be obtained.
【図１】この発明の実施例１及び比較例１において作製
した試験用電池の概略説明図である。FIG. 1 is a schematic explanatory view of test batteries produced in Example 1 and Comparative Example 1 of the present invention.
【図２】上記の実施例１及び比較例１の試験用電池の放
電時における正極の電位と放電深度（％）との関係を示
した図である。FIG. 2 is a graph showing the relationship between the positive electrode potential and the depth of discharge (%) during discharge of the test batteries of Example 1 and Comparative Example 1 described above.
【符号の説明】 １１ 作用極（正極） １２ 対極（負極） １３ 参照極 １４ 非水電解液[Explanation of symbols] 11 Working electrode (positive electrode) 12 counter electrode (negative electrode) 13 reference pole 14 Non-aqueous electrolyte
───────────────────────────────────────────────────── フロントページの続き (72)発明者 能間 俊之 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 米津 育郎 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 Ｆターム(参考） 5H029 AJ02 AJ03 AJ05 AK03 AL12 AM03 AM05 AM07 CJ02 CJ08 HJ02 5H050 AA04 AA07 AA08 BA16 BA17 CA08 CA09 CB12 GA02 GA10 HA02 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toshiyuki Noma 2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture Within Yo Denki Co., Ltd. (72) Inventor Ikuro Ikuro 2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture Within Yo Denki Co., Ltd. F-term (reference) 5H029 AJ02 AJ03 AJ05 AK03 AL12 AM03 AM05 AM07 CJ02 CJ08 HJ02 5H050 AA04 AA07 AA08 BA16 BA17 CA08 CA09 CB12 GA02 GA10 HA02
Claims (3)
電解質二次電池において、上記の正極の材料に、リチウ
ム・マンガン複合酸化物とリチウム・ニッケル複合酸化
物とを混合焼結させた焼結材料を用いたことを特徴とす
る非水電解質二次電池。1. A non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the material for the positive electrode is mixed and sintered with a lithium-manganese composite oxide and a lithium-nickel composite oxide. A non-aqueous electrolyte secondary battery characterized by using a sintered material.
において、前記のリチウム・ニッケル複合酸化物とし
て、組成式Ｌｉa Ｎｉx Ｃｏy Ｍｎz Ｏ2 （但し、１≦
ａ≦１．５，０＜ｘ≦１，０≦ｙ≦１，０≦ｚ≦１を満
たす。）で表されるものを用いたことを特徴とする非水
電解質二次電池。2. The non-aqueous electrolyte secondary battery according to claim 1, wherein the lithium-nickel composite oxide has a composition formula of Li a Ni x Co y Mn z O 2 (where 1 ≦
It satisfies a ≦ 1.5, 0 <x ≦ 1,0 ≦ y ≦ 1,0 ≦ z ≦ 1. ) The non-aqueous electrolyte secondary battery characterized by using what is represented by these.
次電池において、前記のリチウム・マンガン複合酸化物
として、Ｌｉ1+b Ｍｎc Ｍ’d Ｏ4 （但し、Ｍ’は、Ｍ
ｇ，Ａｌ，Ｔｉ，Ｆｅ，Ｃｒからなる群から選択される
１種以上の元素であり、０≦ｂ≦０．５，１≦ｃ≦２，
０≦ｄ≦１を満たす。）を用いたこを特徴とする非水電
解質二次電池。3. The non-aqueous electrolyte secondary battery according to claim 1, wherein the lithium-manganese composite oxide is Li 1 + b Mn c M ′ d O 4 (where M ′ is M
One or more elements selected from the group consisting of g, Al, Ti, Fe, Cr, 0 ≦ b ≦ 0.5, 1 ≦ c ≦ 2
0 ≦ d ≦ 1 is satisfied. ) Is used for the non-aqueous electrolyte secondary battery.
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|---|---|---|---|
| JP2001336620A JP4049571B2 (en) | 2001-11-01 | 2001-11-01 | Nonaqueous electrolyte secondary battery |
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| JP4049571B2 JP4049571B2 (en) | 2008-02-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003081698A1 (en) * | 2002-03-27 | 2003-10-02 | Yuasa Corporation | Active substance of positive electrode and nonaqueous electrolyte battery containing the same |
| JP2007220630A (en) * | 2006-02-20 | 2007-08-30 | Sony Corp | Positive electrode active material and battery |
| WO2013137510A1 (en) * | 2012-03-13 | 2013-09-19 | 주식회사 엘앤에프신소재 | Method for manufacturing anode active material for lithium secondary battery, anode active material for lithium secondary battery, and lithium secondary battery |
| WO2013137509A1 (en) * | 2012-03-13 | 2013-09-19 | 주식회사 엘앤에프신소재 | Method for manufacturing anode active material for lithium secondary battery, anode active material for lithium secondary battery, and lithium secondary battery |
| US20130337302A1 (en) * | 2005-05-13 | 2013-12-19 | Kabushiki Kaisha Toshiba | Nonaqueous electrolyte battery containing a negative electrode of lithium-titanium composite oxide, battery pack and vehicle |
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2001
- 2001-11-01 JP JP2001336620A patent/JP4049571B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003081698A1 (en) * | 2002-03-27 | 2003-10-02 | Yuasa Corporation | Active substance of positive electrode and nonaqueous electrolyte battery containing the same |
| US7691535B2 (en) | 2002-03-27 | 2010-04-06 | Gs Yuasa Corporation | Active substance of positive electrode and non-aqueous electrolyte battery containing the same |
| US20130337302A1 (en) * | 2005-05-13 | 2013-12-19 | Kabushiki Kaisha Toshiba | Nonaqueous electrolyte battery containing a negative electrode of lithium-titanium composite oxide, battery pack and vehicle |
| JP2007220630A (en) * | 2006-02-20 | 2007-08-30 | Sony Corp | Positive electrode active material and battery |
| WO2013137510A1 (en) * | 2012-03-13 | 2013-09-19 | 주식회사 엘앤에프신소재 | Method for manufacturing anode active material for lithium secondary battery, anode active material for lithium secondary battery, and lithium secondary battery |
| WO2013137509A1 (en) * | 2012-03-13 | 2013-09-19 | 주식회사 엘앤에프신소재 | Method for manufacturing anode active material for lithium secondary battery, anode active material for lithium secondary battery, and lithium secondary battery |
| US9917297B2 (en) | 2012-03-13 | 2018-03-13 | L&F Material Co., Ltd. | Method for preparing positive electrode active material for lithium secondary battery |
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