JP3376792B2 - Manufacturing method of organic electrolyte battery - Google Patents
Manufacturing method of organic electrolyte batteryInfo
- Publication number
- JP3376792B2 JP3376792B2 JP33001595A JP33001595A JP3376792B2 JP 3376792 B2 JP3376792 B2 JP 3376792B2 JP 33001595 A JP33001595 A JP 33001595A JP 33001595 A JP33001595 A JP 33001595A JP 3376792 B2 JP3376792 B2 JP 3376792B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- organic electrolyte
- electrolyte battery
- lithium aluminum
- concentration
- 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
-
- Y02E60/12—
Landscapes
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、テープ状のリチウ
ムアルミ合金を負極に用いた有機電解質電池の製造法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape-shaped lithium
The present invention relates to a method for manufacturing an organic electrolyte battery using a aluminum alloy as a negative electrode .
【０００２】[0002]
【従来の技術】リチウム電池等に使用されているリチウ
ムアルミニウム合金テープは、元来柔らかい性質を持っ
ているので、打ち抜きや切断といった加工の際、伸びが
生じやすいという問題点があった。そこで伸びを防ぐた
めに、特開平７−２６３４３号公報記載のように、リチ
ウムアルミニウム合金中の窒素濃度を高めるなどして、
伸び率を減少させるような方法が考えられていた。2. Description of the Related Art A lithium aluminum alloy tape used for a lithium battery or the like has a soft property by nature, and thus has a problem that elongation tends to occur during processing such as punching and cutting. Therefore, in order to prevent elongation, as described in JP-A-7-26343, the nitrogen concentration in the lithium aluminum alloy is increased,
A method of reducing the growth rate has been considered.
【０００３】[0003]
【発明が解決しようとする課題】しかし、窒素濃度が高
いリチウムアルミ合金を負極活物質として用いた有機電
解質電池は、電池を高温で保存した場合、リチウムアル
ミ合金の変色変質が起こり、電池の内部抵抗が増加する
といった問題、ならびに前記合金の伸び率の減少に伴
い、工程中において合金テープの切断不良率を増加させ
るといった問題があった。 However, in an organic electrolyte battery using a lithium aluminum alloy having a high nitrogen concentration as a negative electrode active material, when the battery is stored at a high temperature, the lithium aluminum alloy is discolored and deteriorated to cause internal deterioration of the battery. With the problem of increased resistance, as well as the decrease in elongation of the alloy,
Increase the cutting failure rate of the alloy tape during the process.
There is that the kind of problem.
【０００４】本発明は、これら従来の課題を解消し、リ
チウムアルミニウム合金の低い伸び率を維持し、高温保
存特性を改良した有機電解質電池の製造法を得ることを
目的とする。[0004] The present invention is to solve these conventional problems, Li
It is an object of the present invention to obtain a method for manufacturing an organic electrolyte battery in which the low elongation of a titanium aluminum alloy is maintained and the high temperature storage characteristics are improved.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の有機電解質電池の製造法は、窒素濃度が
１〜２０ｐｐｍ未満で、かつアルミニウム濃度が０．１
％以上のリチウムアルミニウム合金を、窒素濃度が２５
０ｐｐｍ以下である不活性ガス中で加熱溶解させる工程
を有し、窒素濃度が１５０ｐｐｍ以下、かつアルミニウ
ム濃度が０．１％以上であるリチウムアルミニウム合金
のインゴットを形成する点に特徴を有する。この製造法
によれば、詳細な作用は不明であるが、窒素濃度を極少
としたリチウムアルミニウム合金を、窒素濃度が２５０
ｐｐｍ以下に調整された不活性ガスの雰囲気下で加熱、
溶解させることで、前記合金の窒素濃度が高められるも
のである。 Was to achieve the above object, there is provided a means for solving]
Therefore, the manufacturing method of the organic electrolyte battery of the present invention is
1 to less than 20 ppm and an aluminum concentration of 0.1
% Of lithium aluminum alloy with a nitrogen concentration of 25
Step of heating and dissolving in an inert gas of 0 ppm or less
With a nitrogen concentration of 150 ppm or less and an aluminum concentration of 0.1% or more
It is characterized in that it forms an ingot. This manufacturing method
According to the authors, the detailed effect is unknown, but the nitrogen concentration is extremely low.
The lithium aluminum alloy with
heating in an atmosphere of inert gas adjusted to ppm or less,
By melting, the nitrogen concentration of the alloy can be increased.
Of.
【０００６】また、上記工程で作成されたリチウムアル
ミニウム合金のインゴットを押し出し成形した後、テー
プ状に加圧圧延する工程を有しており、この加圧圧延を
施す工程を窒素雰囲気中で行う点にも特徴を有する。 Further, the lithium al produced in the above process
After extruding a minium alloy ingot,
It has a process of pressure rolling into a strip shape.
Another feature is that the applying step is performed in a nitrogen atmosphere.
【０００７】[0007]
【発明の実施の形態】本発明に係るリチウムアルミニウ
ム合金を用いた有機電解質電池は、窒素濃度が１５０ｐ
ｐｍ以下と低く、電池を高温で保存したときの内部抵抗
の上昇を防ぐことができ、しかもアルミニウム濃度が
０．１％以上であるため、リチウムアルミニウム合金を
テープ状に加工する際の伸び率を低減することができ
る。BEST MODE FOR CARRYING OUT THE INVENTION An organic electrolyte battery using a lithium aluminum alloy according to the present invention has a nitrogen concentration of 150 p.
Since it is as low as pm or less, it is possible to prevent an increase in internal resistance when the battery is stored at a high temperature, and since the aluminum concentration is 0.1% or more, the elongation rate when processing the lithium aluminum alloy into a tape shape is improved. It can be reduced.
【０００８】[0008]
【実施例】以下、本発明の一実施例のリチウムアルミニ
ウム合金を用いた有機電解質電池およびそのリチウムア
ルミニウム合金の製造法について詳述する。EXAMPLES An organic electrolyte battery using a lithium aluminum alloy and a method for producing the lithium aluminum alloy according to one example of the present invention will be described in detail below.
【０００９】リチウムアルミニウム合金のインゴット
を、窒素を含む不活性ガス中で加圧圧延して得られた各
種リチウムアルミニウム合金テープａ，ｂ，ｃ，ｄの、
窒素含有量を（表１）に示す。Various lithium aluminum alloy tapes a, b, c, d obtained by pressure rolling an ingot of a lithium aluminum alloy in an inert gas containing nitrogen,
The nitrogen content is shown in (Table 1).
【００１０】[0010]
【表１】 [Table 1]
【００１１】これらのリチウムアルミニウム合金（ａ〜
ｄ）を負極として用い、二酸化マンガンを活物質とする
正極を用いて、直径１７ｍｍ、高さ３５ｍｍの電気容量
１３００ｍＡｈの円筒形スパイラル有機電解液電池（Ａ
〜Ｄ）を組み立てた。These lithium aluminum alloys (a to
d) is used as a negative electrode and a positive electrode using manganese dioxide as an active material is used, and a cylindrical spiral organic electrolyte battery (A having a diameter of 17 mm and a height of 35 mm and an electric capacity of 1300 mAh) (A
~ D) was assembled.
【００１２】さらに電池Ａ〜Ｄを８５℃中で１カ月保存
した後の、電池の内部抵抗を（表２）に示す。Further, the internal resistance of the batteries A to D after storage at 85 ° C. for one month is shown in (Table 2).
【００１３】[0013]
【表２】 [Table 2]
【００１４】（表２）より、電池Ａ，Ｂ，Ｄに示される
ようにリチウムアルミニウム合金テープ中の窒素濃度を
１５０ｐｐｍ以下にしたものａ，ｂ，ｄは、電池を高温
保存したときの内部抵抗の上昇が抑制できることが明ら
かになった。From Table 2, as shown in batteries A, B, and D, the lithium aluminum alloy tapes whose nitrogen concentration is 150 ppm or less are a, b, and d, which are internal resistances when the batteries are stored at high temperature. It was revealed that the rise of the can be suppressed.
【００１５】このような、窒素濃度を有するリチウムア
ルミ合金は、窒素濃度が１〜２０ｐｐｍ未満で、かつア
ルミニウム濃度が０．１０％以上のリチウムアルミニウ
ム合金インゴットを窒素濃度が２５０ｐｐｍ以下の不活
性ガスを２００ｌ／分吹き込む雰囲気中で、２２０〜２
５０℃に加熱し溶解させ、押し出し成形してインゴット
を得る。このインゴットを窒素ガス雰囲気中で所定の厚
みに加圧圧延する処理を行ってリチウムアルミニウム合
金のテープを作製するものである。Such a lithium aluminum alloy having a nitrogen concentration is a lithium aluminum alloy ingot having a nitrogen concentration of 1 to less than 20 ppm and an aluminum concentration of 0.10% or more, and an inert gas having a nitrogen concentration of 250 ppm or less. 220-2 in an atmosphere of 200 l / min.
It is heated to 50 ° C. to be melted, and extrusion molding is performed to obtain an ingot. It is to produce a tape of the lithium aluminum alloy by performing a process of pressure rolled to a predetermined thickness of the ingot in nitrogen gas atmosphere.
【００１６】また、次にリチウムアルミニウム合金のａ
〜ｄそれぞれの加工工程での切断不良率を（表３）に示
す。Next, a of lithium aluminum alloy
Table 3 shows the cutting failure rates in each of the processing steps.
【００１７】[0017]
【表３】 [Table 3]
【００１８】（表３）より、電池Ａ，Ｂ，Ｃに示される
ようにリチウムアルミニウム合金中のアルミニウム濃度
が０．１％以上であると、切断伸びによる不良を抑制す
る効果のあることがわかる。From Table 3, it can be seen that, as shown in batteries A, B and C, when the aluminum concentration in the lithium aluminum alloy is 0.1% or more, there is an effect of suppressing defects due to cutting elongation. .
【００１９】[0019]
【発明の効果】以上の説明から明らかなように、本発明
の製造法によって作製される有機電解液電池は、窒素濃
度が１５０ｐｐｍ以下、かつアルミニウム濃度が０．１
％以上に調整されたリチウムアルミニウム合金を負極と
して用いることにより、電池を高温で保存したときの内
部抵抗の上昇が抑制でき、しかもリチウムアルミニウム
合金テープを加工するときの伸び率が低減され、工程に
おける切断不良率が極めて小さくなるものである。As is apparent from the above description , the present invention
The organic electrolyte battery manufactured by the manufacturing method of No. 1 has a nitrogen concentration of 150 ppm or less and an aluminum concentration of 0.1.
% Of the lithium aluminum alloy used as the negative electrode can suppress the increase in internal resistance when the battery is stored at high temperature, and further reduce the elongation rate when processing the lithium aluminum alloy tape. The cutting failure rate is extremely small.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 4/00 - 4/26 C22C 1/02 B22D 1/00 - 23/00 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) H01M 4/00-4/26 C22C 1/02 B22D 1/00-23/00
Claims (2)
アルミニウム濃度が０．１％以上のリチウムアルミニウ
ム合金を、窒素濃度が２５０ｐｐｍ以下である不活性ガ
ス中で加熱溶解させて、窒素濃度が１５０ｐｐｍ以下に
あり、かつアルミニウム濃度が０．１％以上であるリチ
ウムアルミ合金を作成し、テープ状に加圧圧延すること
を特徴とする有機電解液電池の製造法。1. A nitrogen concentration of 150 ppm is obtained by heating and melting a lithium aluminum alloy having a nitrogen concentration of 1 to less than 20 ppm and an aluminum concentration of 0.1% or more in an inert gas having a nitrogen concentration of 250 ppm or less. less than
Lithium with aluminum concentration of 0.1% or more
A method for manufacturing an organic electrolyte battery, which comprises forming an aluminum-aluminum alloy and rolling it under pressure into a tape.
実施する請求項１記載の有機電解液電池の製造法。 2. Pressure rolling into a tape form in a nitrogen atmosphere
The method for producing an organic electrolyte battery according to claim 1, which is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33001595A JP3376792B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of organic electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33001595A JP3376792B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of organic electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09167615A JPH09167615A (en) | 1997-06-24 |
| JP3376792B2 true JP3376792B2 (en) | 2003-02-10 |
Family
ID=18227826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33001595A Expired - Fee Related JP3376792B2 (en) | 1995-12-19 | 1995-12-19 | Manufacturing method of organic electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3376792B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4508756B2 (en) * | 2004-07-16 | 2010-07-21 | 三洋電機株式会社 | Lithium primary battery |
-
1995
- 1995-12-19 JP JP33001595A patent/JP3376792B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09167615A (en) | 1997-06-24 |
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