JP2798752B2 - Manufacturing method of non-aqueous electrolyte secondary battery - Google Patents
Manufacturing method of non-aqueous electrolyte secondary batteryInfo
- Publication number
- JP2798752B2 JP2798752B2 JP1320319A JP32031989A JP2798752B2 JP 2798752 B2 JP2798752 B2 JP 2798752B2 JP 1320319 A JP1320319 A JP 1320319A JP 32031989 A JP32031989 A JP 32031989A JP 2798752 B2 JP2798752 B2 JP 2798752B2
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- battery
- negative electrode
- positive electrode
- spare
- 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
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、再充電可能な活物質を含む正極と、電解液
が含浸されたセパレータと、リチウム−アルミニウム合
金から成る負極とが電池缶内に装填された非水電解液二
次電池の製造方法に関し、特に負極の製造方法に関す
る。The present invention relates to a method for loading a positive electrode containing a rechargeable active material, a separator impregnated with an electrolyte, and a negative electrode made of a lithium-aluminum alloy into a battery can. In particular, the present invention relates to a method for manufacturing a negative electrode.
従来の技術 この種の二次電池の正極活物質としてはMoO3、V2O5、
MnO2、LixMnOy、Ti,Mo或いはNbの硫化物などが提案され
ており、一部実用化されている。一方、負極活物質とし
ては、リチウムやリチウム合金が用いられているが、放
電容量充放電サイクル特性の点でリチウム−アルミニウ
ム合金が特に優れている。 2. Description of the Related Art MoO 3 , V 2 O 5 ,
MnO 2 , LixMnOy, sulfides of Ti, Mo or Nb and the like have been proposed, and some of them have been put to practical use. On the other hand, lithium or a lithium alloy is used as the negative electrode active material, and a lithium-aluminum alloy is particularly excellent in terms of discharge capacity and charge / discharge cycle characteristics.
ところで、上記リチウム−アルミニウム合金の製造方
法としては、アルミニウムにリチウムを電気化学的にド
ープさせる方法や、アルミニウムとリチウムとを接触さ
せて合金化する方法が一般的に用いられている。この場
合、リチウム−アルミニウム合金中のリチウム濃度とし
ては、放電容量，充放電特性の点から原子比で数10％含
有されていることが必要となる。ところが、このように
多量のリチウムを含有するリチウム−アルミニウム合金
は水分との反応性が高くなるため、水分を除去した雰囲
気中で作成，取り扱うことが必要となる。このため、製
造工程が煩雑となって電池の製造コストが高騰する。加
えて、取扱中にリチウム−アルミニウム合金が微量の水
と反応して変性することにより電池性能が低下する等の
課題を有していた。By the way, as a method for producing the lithium-aluminum alloy, a method of electrochemically doping aluminum with lithium or a method of bringing aluminum into contact with lithium to form an alloy is generally used. In this case, the lithium concentration in the lithium-aluminum alloy needs to be several tens% in terms of atomic ratio in terms of discharge capacity and charge / discharge characteristics. However, such a lithium-aluminum alloy containing a large amount of lithium has a high reactivity with moisture, and thus needs to be prepared and handled in an atmosphere from which moisture has been removed. For this reason, the manufacturing process becomes complicated and the manufacturing cost of the battery rises. In addition, there is a problem that the lithium-aluminum alloy reacts with a small amount of water to be denatured during handling, thereby lowering battery performance.
そこで、電池内の電解液中でリチウムとアルミニウム
とを接触させ、リチウム−アルミニウム合金を作成する
ような方法が考えられる。Therefore, a method is considered in which lithium and aluminum are brought into contact with each other in an electrolytic solution in a battery to form a lithium-aluminum alloy.
発明が解決しようとする課題 しかしながら、このように接触させて合金化する方法
では、アルミニウムとリチウムとの間に電解液が介在し
難くなることから、合金化に非常に長時間（約数百時間
以上）を要し、やはり電池の製造コストが高騰するとい
う課題を有していた。However, in the method of contacting and alloying as described above, since it is difficult for the electrolyte to intervene between aluminum and lithium, the alloying takes a very long time (about several hundred hours). Above), which also raises the problem that the manufacturing cost of the battery rises.
本発明はかかる現状に鑑みてなされたものであり、電
池性能を低下させることなく短時間且つ低コストで電池
を作製することができる非水電解液二次電池の製造方法
を提供することを目的とする。The present invention has been made in view of such circumstances, and has as its object to provide a method for manufacturing a nonaqueous electrolyte secondary battery that can manufacture a battery in a short time and at low cost without lowering battery performance. And
課題を解決するための手段 本発明は上記目的を達成するために、再充電可能な活
物質を含む正極と、電解液が含浸されたセパレータと、
リチウム−アルミニウム合金から成る負極とが電池缶内
に装填された非水電解液二次電池の製造方法において、
電池缶の負極側から順に、原子比でリチウムを約10％含
むリチウム−アルミニウム合金から成る予備負極と、前
記セパレータと、前記正極とを配置すると共に、上記予
備負極とセパレータとの間又はセパレータと正極との間
に金属リチウム配置する第１ステップと、前記正極内に
リチウムを取り込む第２ステップと、充電を行って前記
正極内のリチウムを予備負極内に取り込む第３ステップ
とを有することを特徴とする。Means for Solving the Problems The present invention achieves the above object, a positive electrode containing a rechargeable active material, a separator impregnated with an electrolyte,
A method for producing a non-aqueous electrolyte secondary battery in which a negative electrode made of a lithium-aluminum alloy is loaded in a battery can,
In order from the negative electrode side of the battery can, a spare negative electrode made of a lithium-aluminum alloy containing about 10% of lithium in an atomic ratio, the separator, and the positive electrode are arranged, and between the spare negative electrode and the separator or between the spare negative electrode and the separator. A first step of arranging metallic lithium between the positive electrode, a second step of taking lithium into the positive electrode, and a third step of performing charging to take lithium in the positive electrode into a spare negative electrode. And
作用 上記方法において、第１ステップでセパレータと正極
との間に金属リチウムを配置した場合には、そのまま放
置しておくと正極とリチウムとが短絡し、リチウムが正
極活物質中に取り込まれることになる。この際、正極合
剤中には充分な電解液が含まれているため、この反応は
短時間で生じる。次いで、第３ステップに示すように充
電を行えば、上記の如く正極中に取り込まれたリチウム
が予備負極に取り込まれることになる。これによって、
原子比でリチウムを数十％含む（放電容量や充放電特性
の点から優れる）リチウム−アルミニウム合金から成る
負極が作成されることになる。また、この第３ステップ
の如く充電によりリチウム−アルミニウム合金を作成す
れば、放置により作成する場合に比べて時間を格段に短
縮することが可能となる。In the above method, in the case where metallic lithium is disposed between the separator and the positive electrode in the first step, if left as it is, the positive electrode and lithium are short-circuited, and lithium is taken into the positive electrode active material. Become. At this time, since the positive electrode mixture contains a sufficient electrolytic solution, this reaction occurs in a short time. Next, if charging is performed as shown in the third step, lithium taken into the positive electrode as described above will be taken into the spare negative electrode. by this,
A negative electrode made of a lithium-aluminum alloy containing several tens% of lithium in atomic ratio (excellent in terms of discharge capacity and charge / discharge characteristics) is produced. Further, if the lithium-aluminum alloy is prepared by charging as in the third step, the time can be remarkably shortened as compared with the case where the lithium-aluminum alloy is prepared by leaving it unattended.
このように本発明の製造方法では、電池内部でリチウ
ム−アルミニウム合金を作成するのでリチウムが水分と
反応せず、電池性能が低下することがない。加えて、上
記の如く第２ステップ及び第３ステップは短時間で終了
するので、電池の製造コストが高騰することもない。As described above, in the manufacturing method of the present invention, since the lithium-aluminum alloy is formed inside the battery, lithium does not react with moisture, and the battery performance does not deteriorate. In addition, since the second and third steps are completed in a short time as described above, the manufacturing cost of the battery does not increase.
尚、予備負極としてリチウムを含有しない金属アルミ
ニウムを用いた場合には、負極容量が正極から取り込む
リチウムの容量だけになってしまうため、負極の容量不
足となり充放電サイクル特性が低下する。したがって、
予備負極には予め原子比で約10％程度リチウムを含有す
るリチウム−アルミニウム合金を用いることが必要とな
る。この場合、リチウムの含有量は少ないので合金は通
常の空気中でも安定であって、水分を除去した特殊な雰
囲気中で取り扱う必要もない。したがって、製造コスト
を高騰させることなく電池を作製することが可能であ
る。Note that, when metal aluminum containing no lithium is used as the spare negative electrode, the negative electrode capacity is only the capacity of lithium taken in from the positive electrode, and the capacity of the negative electrode becomes insufficient, and the charge / discharge cycle characteristics are reduced. Therefore,
It is necessary to use a lithium-aluminum alloy containing about 10% lithium in atomic ratio in advance for the spare negative electrode. In this case, since the content of lithium is small, the alloy is stable in ordinary air, and does not need to be handled in a special atmosphere from which moisture has been removed. Therefore, a battery can be manufactured without increasing the manufacturing cost.
また、リチウムの容量が正極の放電容量よりも大きい
場合には、残存リチウムと接触している正極表面上で電
解液の分解反応が生じる。このため、リチウムの容量は
正極の放電容量よりも小さいことが望ましい。When the capacity of lithium is larger than the discharge capacity of the positive electrode, a decomposition reaction of the electrolytic solution occurs on the surface of the positive electrode in contact with the remaining lithium. Therefore, it is desirable that the capacity of lithium is smaller than the discharge capacity of the positive electrode.
一方、セパレータと予備負極との間に金属リチウムを
配置した場合には、第２ステップで放電を行なうことに
よりリチウムが正極中に取り込まれ、この後は上記と同
様の放電により負極内にリチウムが取り込まれることに
なる。そして、この場合にも上記と同様の作用を奏す
る。On the other hand, when metallic lithium is disposed between the separator and the spare negative electrode, lithium is taken into the positive electrode by performing a discharge in the second step, and thereafter lithium is stored in the negative electrode by the same discharge as described above. Will be captured. In this case, the same operation as described above is achieved.
実施例 本発明の実施例を、第１図〜第４図に基づいて、以下
に説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS.
〔実施例１〕 第１図に示すように、リチウム−アルミニウム合金か
ら成る負極２は負極集電体７の内面に圧着されており、
この負極集電体７はステンレスから成る断面略コ字状の
負極缶５の内底面に固着されている。上記負極缶５の周
端はポリプロピレン製の絶縁パッキング８の内部に固定
されており、絶縁パッキング８の外周にはステンレスか
ら成り上記負極缶５とは反対方向に断面略コ字状を成す
正極缶４が固定されている。この正極缶４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１が固定されている。この正極１と前記負極
２との間には、電解液が含浸されポリプロピレン製微多
孔膜から成るセパレータ３が介装されている。尚、上記
電解液としては、プロピレンカーボネートとジメトキシ
エタンとの混合溶媒に過塩素酸リチウムを１モル／の
割合で溶解したものを用いている。また、電池寸法は直
径24.0mm、厚み3.0mmである。Example 1 As shown in FIG. 1, a negative electrode 2 made of a lithium-aluminum alloy was pressed on the inner surface of a negative electrode current collector 7,
The negative electrode current collector 7 is fixed to the inner bottom surface of the negative electrode can 5 made of stainless steel and having a substantially U-shaped cross section. A peripheral end of the negative electrode can 5 is fixed inside a polypropylene insulating packing 8, and a positive electrode can made of stainless steel is formed around the outer periphery of the insulating packing 8 and has a substantially U-shaped cross section in a direction opposite to the negative electrode can 5. 4 is fixed. A positive electrode current collector 6 is fixed to the inner bottom surface of the positive electrode can 4, and the positive electrode 1 is fixed to the inner surface of the positive electrode current collector 6. Between the positive electrode 1 and the negative electrode 2, a separator 3 made of a polypropylene microporous film impregnated with an electrolytic solution is interposed. Note that, as the electrolytic solution, a solution obtained by dissolving lithium perchlorate at a ratio of 1 mol / in a mixed solvent of propylene carbonate and dimethoxyethane is used. The battery dimensions are 24.0 mm in diameter and 3.0 mm in thickness.
ところで、上記構造の非水電解液二次電池は、以下の
ようにして作製した。By the way, the non-aqueous electrolyte secondary battery having the above structure was manufactured as follows.
先ず、正極１を以下のようにして作成する。 First, the positive electrode 1 is prepared as follows.
平均粒径30μｍ以下の化学二酸化マンガン50gと、LiO
H14gとを乳鉢にて混合した後、空気中において375℃で2
0時間熱処理する。これにより、Li2MnO3を含有するMnO2
が得られる。次に、このようにして得られた活物質粉末
と、導電剤としてのアセチレンブラックと、結着剤とし
てのフッ素樹脂粉末とを重量比で90:6:4の割合で混合し
て正極合剤を作成する。次いで、この正極合剤を２トン
/cm2で直径20mmに加圧成型した後、250℃で熱処理する
ことにより正極１を作製した。50 g of chemical manganese dioxide with an average particle size of 30 μm or less, and LiO
After mixing with H14g in a mortar, 2
Heat treatment for 0 hour. Thereby, MnO 2 containing Li 2 MnO 3
Is obtained. Next, the active material powder thus obtained, acetylene black as a conductive agent, and a fluororesin powder as a binder were mixed at a weight ratio of 90: 6: 4 to mix the positive electrode mixture. Create Next, 2 tons of this positive electrode mixture
A positive electrode 1 was produced by press-molding to a diameter of 20 mm at / cm 2 and heat-treating at 250 ° C.
尚、上記正極１を1mAで放電した時に、電極電位がリ
チウムに対して1Vとなるまでの放電容量は120mAhであっ
た。When the positive electrode 1 was discharged at 1 mA, the discharge capacity until the electrode potential became 1 V with respect to lithium was 120 mAh.
一方、電池缶に装着する前の予備負極は、予めリチウ
ムを原子比で10％含有するリチウム−アルミニウム合金
をメルティングによりシート状にした後、直径20mmに打
ち抜くことにより作成した。On the other hand, the spare negative electrode before being attached to the battery can was prepared by previously forming a lithium-aluminum alloy containing 10% of lithium by atomic ratio into a sheet by melting, and then punching the sheet into a 20 mm diameter.
更に、シート状のリチムウを直径20mmに打ち抜くこと
により金属リチウムを作成した。尚、この金属リチウム
の容量は100mAhである。Further, metal lithium was prepared by punching a sheet-shaped lithium to a diameter of 20 mm. The capacity of this metallic lithium is 100 mAh.
しかる後、第２図に示すように、正極缶４と負極缶５
とから構成される空間内に、負極缶５側から順に、予備
負極９と、セパレータ３と、金属リチウム10と、正極１
とを装着する。この後、このようにして作製した予備電
池を20時間放置する。この際、金属リチウム10と正極１
とが電解液中で接触して短絡状態となるので、リチウム
が正極１内に取り込まれることになる。次いで、予備電
池を電流3mAで3.5Vまで充電する。これにより、上記の
如く正極１中に取り込まれたリチウムが予備負極９中に
取り込まれて、リチウムを数十％含有する負極２（放電
容量は150mAh）が作成される。尚、上記放電充電の時間
は約50時間である。Thereafter, as shown in FIG. 2, the positive electrode can 4 and the negative electrode can 5
In the space constituted by the following, in order from the negative electrode can 5 side, the spare negative electrode 9, the separator 3, the metallic lithium 10, and the positive electrode 1
And are attached. Thereafter, the spare battery thus manufactured is left for 20 hours. At this time, metallic lithium 10 and positive electrode 1
Are brought into contact with each other in the electrolyte to form a short circuit state, so that lithium is taken into the positive electrode 1. Next, the spare battery is charged to 3.5 V at a current of 3 mA. As a result, the lithium taken into the positive electrode 1 as described above is taken into the spare negative electrode 9, and the negative electrode 2 containing several tens% of lithium (discharge capacity is 150 mAh) is produced. The discharging and charging time is about 50 hours.
このようにして作製した電池を、以下（A1）電池と称
する。The battery fabricated in this manner is hereinafter referred to as (A 1 ) battery.
第３図に示すように、金属リチウム10をセパレータ３
と予備負極９の間に配置すると共に、予備電池を放置す
る代わりに3mAの電流を放電する他は、上記実施例Ｉと
同様にして電池を作製した。尚、この場合の放電と充電
との合計時間は約70時間であり、且つ負極２の放電容量
は150mAhであった。As shown in FIG.
A battery was fabricated in the same manner as in Example I above, except that the battery was disposed between the battery and the spare negative electrode 9 and a current of 3 mA was discharged instead of leaving the spare battery. In this case, the total time of the discharge and the charge was about 70 hours, and the discharge capacity of the negative electrode 2 was 150 mAh.
このようにして作製した電池を、以下（A2）電池と称
する。The battery fabricated in this manner is hereinafter referred to as (A 2 ) battery.
予備負極９として、予めリチウムを10％（原子比）含
有するリチウム−アルミニウム合金の代わりに金属アル
ミニウムを用いると共に、これを容量150mAhのリチウム
と接触させる他は、上記実施例IIと同様にして電池を作
製した。但し、この場合には、予備電池を100時間放置
するのみで、その後の充電は行っていない。As the spare negative electrode 9, a battery was prepared in the same manner as in Example II except that aluminum was used instead of a lithium-aluminum alloy previously containing 10% (atomic ratio) of lithium and was contacted with lithium having a capacity of 150 mAh. Was prepared. However, in this case, only the spare battery is left for 100 hours, and no subsequent charging is performed.
このようにして作製した電池を、以下（X1）電池と称
する。The battery fabricated in this manner is hereinafter referred to as (X 1 ) battery.
放置時間を500時間とする他は、上記比較例Ｉと同様
にして電池を作製した。A battery was prepared in the same manner as in Comparative Example I except that the standing time was changed to 500 hours.
このようにして作製した電池を、以下（X2）電池と称
する。The battery fabricated in this manner is hereinafter referred to as (X 2 ) battery.
予備負極９として、予めリチウムを10％（原子比）含
有するLi−Al合金の代わりに金属アルミニウムを用いる
他は、上記実施例Ｉと同様にして電池を作製した。尚、
この場合には、その後の放置，充電は実施例Ｉと同様の
条件で行っている。また、このようにして作成した負極
であるリチウム−アルミニウム合金の放電容量は60mAh
であった。A battery was fabricated in the same manner as in Example I above, except that metallic aluminum was used instead of the Li-Al alloy containing 10% lithium (atomic ratio) in advance as the spare negative electrode 9. still,
In this case, the subsequent leaving and charging are performed under the same conditions as in Example I. Further, the discharge capacity of the lithium-aluminum alloy as the negative electrode thus produced was 60 mAh.
Met.
このようにして作製した電池を、以下（X3）電池と称
する。The battery fabricated in this manner is hereinafter referred to as (X 3 ) battery.
上記本発明の方法で製造した（A1）電池，（A2）電池
と比較例の方法で製造した（X1）電池〜（X3）電池との
充放電サイクル特性を調べたので、その結果を第４図に
示す。尚、この場合の実験条件は、電流3mAで４時間放
置した後、電流3mAで充電終止電圧3.5Vになるまで充電
するという条件である。The charge / discharge cycle characteristics of the batteries (A 1 ) and (A 2 ) manufactured by the method of the present invention and the batteries (X 1 ) to (X 3 ) manufactured by the method of the comparative example were examined. The results are shown in FIG. In this case, the experimental conditions were such that the battery was left at a current of 3 mA for 4 hours and then charged at a current of 3 mA until the charging end voltage reached 3.5 V.
第４図より明らかなように、（A1）電池，（A2）電池
は（X1）電池〜（X3）電池に比べて充放電サイクル特性
が格段に改良されていることが認められる。As is clear from FIG. 4, the (A 1 ) battery and the (A 2 ) battery have remarkably improved charge / discharge cycle characteristics as compared with the (X 1 ) to (X 3 ) batteries. .
これは、（X1）電池，（X2）電池では、予備電池を単
に放置するだけであるので充分に合金化がされず、また
（X3）電池では予備負極９にアルミニウム単体を用いる
ため負極容量が小さくなる。これに対して、（A1）電
池，（A2）電池では、予備電池を放置した後に充電を行
っているので十分に合金化がなされると共に、予備負極
９として原子比でリチウムを10％含有するリチウム−ア
ルミニウム合金を用いているので、負極２の容量が大き
くなる。これらのことから上記の如く充放電サイクル特
性が格段に改良されることになる。This is because the (X 1 ) battery and the (X 2 ) battery are not alloyed sufficiently because the spare battery is simply left alone, and the (X 3 ) battery uses aluminum alone for the spare anode 9. The negative electrode capacity becomes smaller. On the other hand, in the (A 1 ) battery and the (A 2 ) battery, since the spare battery was charged after being left, alloying was sufficiently performed, and lithium was used as the spare anode 9 in an atomic ratio of 10%. Since the contained lithium-aluminum alloy is used, the capacity of the negative electrode 2 is increased. From these facts, the charge / discharge cycle characteristics are remarkably improved as described above.
尚、上記実施例においては、正極活物質としてLi2MnO
3を含有するMnO2を用いたが、これに限定するものでも
なく、MnO2,V2O5,MoS2等充放電可能な物質を用いた場合
であっても上記と同様の効果を奏する。In the above embodiment, Li 2 MnO was used as the positive electrode active material.
Although MnO 2 containing 3 was used, the present invention is not limited to this, and even when a chargeable / dischargeable substance such as MnO 2 , V 2 O 5 , MoS 2 is used, the same effects as described above are exerted. .
また、正極活物質としてMnO2やMoS2等を用いた場合に
は、一度深い深度まで放電することが必要となるが、本
発明の製造方法であればこの処理も同時に行なうことが
できるので、さらに製造コストを低減することが可能と
なる。In addition, when MnO 2 or MoS 2 is used as the positive electrode active material, it is necessary to discharge once to a deep depth, but if the manufacturing method of the present invention, this process can be performed at the same time. Further, the manufacturing cost can be reduced.
発明の効果 以上説明したように本発明によれば、低コスト且つ短
時間で充放電サイクル特性に優れた電池を作製すること
が可能となるという効果を奏する。Effects of the Invention As described above, according to the present invention, it is possible to manufacture a battery having excellent charge / discharge cycle characteristics at low cost and in a short time.
第１図は本発明の製造方法により作製された非水電解液
二次電池の半断面図、第２図は実施例Ｉの製造工程を示
す半断面図、第３図は実施例IIの製造工程を示す半断面
図、第４図は本発明の方法で製造した（A1）電池，
（A2）電池と比較例の方法で製造した（X1）電池〜
（X3）電池との充放電サイクル特性を示すグラフであ
る。 １……正極、２……負極、３……セパレータ、９……予
備負極、10……金属リチウム。FIG. 1 is a half-sectional view of a non-aqueous electrolyte secondary battery manufactured by the manufacturing method of the present invention, FIG. 2 is a half-sectional view showing a manufacturing process of Example I, and FIG. half sectional view showing a step, Fig. 4 was produced by the method of the present invention (a 1) cells,
(A 2 ) Battery and (X 1 ) Battery Produced by Method of Comparative Example
(X 3) is a graph showing the charge-discharge cycle characteristics of the battery. 1 ... Positive electrode, 2 ... Negative electrode, 3 ... Separator, 9 ... Preliminary negative electrode, 10 ... Metal lithium.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 4/00 - 4/04 H01M 4/36 - 4/62 H01M 10/36 - 10/40Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01M 4/00-4/04 H01M 4/36-4/62 H01M 10/36-10/40
Claims (1)
が含浸されたセパレータと、リチウム−アルミニウム合
金から成る負極とが電池缶内に装填された非水電解液二
次電池の製造方法において、 電池缶の負極側から順に、原子比でリチウムを約10％含
むリチウム−アルミニウム合金から成る予備負極と、前
記セパレータと、前記正極とを配置すると共に、上記予
備負極とセパレータとの間又はセパレータと正極との間
に金属リチウムを配置する第１ステップと、 前記正極内にリチウムを取り込む第２ステップと、 充電を行って前記正極内のリチウムを予備負極内に取り
込む第３ステップと、 を有することを特徴とする非水電解液二次電池の製造方
法。1. Production of a non-aqueous electrolyte secondary battery in which a positive electrode containing a rechargeable active material, a separator impregnated with an electrolyte, and a negative electrode made of a lithium-aluminum alloy are loaded in a battery can. In the method, in order from a negative electrode side of a battery can, a spare negative electrode made of a lithium-aluminum alloy containing about 10% of lithium by an atomic ratio, the separator, and the positive electrode are arranged, and a space between the spare negative electrode and the separator is provided. Or a first step of arranging metallic lithium between the separator and the positive electrode; a second step of taking lithium in the positive electrode; a third step of charging and taking lithium in the positive electrode into a spare negative electrode; A method for producing a non-aqueous electrolyte secondary battery, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320319A JP2798752B2 (en) | 1989-12-08 | 1989-12-08 | Manufacturing method of non-aqueous electrolyte secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1320319A JP2798752B2 (en) | 1989-12-08 | 1989-12-08 | Manufacturing method of non-aqueous electrolyte secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03182057A JPH03182057A (en) | 1991-08-08 |
| JP2798752B2 true JP2798752B2 (en) | 1998-09-17 |
Family
ID=18120161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1320319A Expired - Fee Related JP2798752B2 (en) | 1989-12-08 | 1989-12-08 | Manufacturing method of non-aqueous electrolyte secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2798752B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089782C (en) * | 1997-11-11 | 2002-08-28 | 中国科学院长春应用化学研究所 | Method for preparing positive electrode material of lithium secondary cell |
-
1989
- 1989-12-08 JP JP1320319A patent/JP2798752B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03182057A (en) | 1991-08-08 |
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