JP3349247B2 - Lithium aluminum alloy for negative electrode of organic electrolyte battery and method for producing the same - Google Patents
Lithium aluminum alloy for negative electrode of organic electrolyte battery and method for producing the sameInfo
- Publication number
- JP3349247B2 JP3349247B2 JP04995494A JP4995494A JP3349247B2 JP 3349247 B2 JP3349247 B2 JP 3349247B2 JP 04995494 A JP04995494 A JP 04995494A JP 4995494 A JP4995494 A JP 4995494A JP 3349247 B2 JP3349247 B2 JP 3349247B2
- Authority
- JP
- Japan
- Prior art keywords
- ppm
- aluminum alloy
- lithium aluminum
- nitrogen concentration
- 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 - Lifetime
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
- Battery Electrode And Active Subsutance (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、有機電解質電池負極用
に使用されるリチウムアルミニウム合金およびその製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lithium aluminum alloy used for a negative electrode of an organic electrolyte battery and its production.
About the method .
【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、通常、打抜きや切断等の
ラインに掛けられ、その後集電体もしくはセパレーター
等と接合され、有機電解質用負極として供給される。2. Description of the Related Art A lithium aluminum alloy tape used for a lithium battery or the like is usually applied to a line such as punching or cutting, and then joined to a current collector or a separator and supplied as a negative electrode for an organic electrolyte. .
【０００３】しかるに、リチウムアルミニウム合金テー
プは元来軟らかい性質を持っているので、打抜きや切断
時においてラインに掛けられる際にテープに伸びが生
じ、テープ厚みが変わり使用できないという問題があ
る。[0003] However, since the lithium aluminum alloy tape originally has a soft property, there is a problem that the tape is stretched when it is hung on a line at the time of punching or cutting, so that the thickness of the tape changes and the tape cannot be used.
【０００４】また、高い伸びのためリチウムに新たな活
性面が出てラインのローラ等に付着し易いという欠点を
持っていた。このためラインのテープに掛けられる張力
に微妙な調整が必要とされ、取り扱いが困難なものであ
った。Another drawback is that the lithium has a new active surface due to its high elongation and easily adheres to the line rollers and the like. For this reason, fine adjustment of the tension applied to the tape on the line was required, and handling was difficult.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、これら従来
技術の課題を解消し、伸び率を低減した有機電解質電池
用リチウムアルミニウム合金およびその製造方法を提供
することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art and to provide a lithium aluminum alloy for an organic electrolyte battery having a reduced elongation and a method for producing the same.
【０００６】[0006]
【課題を達成するための手段】本発明者等は、上記目的
に沿って鋭意検討の結果、リチウムアルミニウム合金イ
ンゴットおよびこれを押し出し加工することにより得ら
れるリチウムアルミニウム合金テープの窒素濃度および
アルミニウム濃度をそれぞれ一定濃度以上とすることに
より、両者の相互作用によって伸び率が減少することを
知見し、本発明に到達した。Means for Achieving the Object The present inventors have conducted intensive studies in accordance with the above-mentioned objects and found that the nitrogen concentration and the aluminum concentration of a lithium aluminum alloy ingot and a lithium aluminum alloy tape obtained by extruding the same were reduced. It has been found that the elongation rate decreases due to the interaction between the two by setting each to a certain concentration or more, and the present invention has been reached.
【０００７】すなわち、本発明は、窒素濃度が２００〜
５００ｐｐｍ、アルミニウム濃度が９００〜１２００ｐ
ｐｍで残部がリチウムからなることを特徴とする有機電
解質電池負極用リチウムアルミニウム合金にある。That is, according to the present invention, the nitrogen concentration is 200 to
500 ppm, aluminum concentration 900-1200 p
The organic photoelectric the balance being composed of lithium pm
It is in the lithium aluminum alloy for the negative electrode of the disintegrated battery .
【０００８】本発明のリチウムアルミニウム合金インゴ
ットまたはテープ中の窒素濃度は２００ｐｐｍ以上、好
ましくは２００〜５００ｐｐｍ、さらに好ましくは２０
０〜３００ｐｐｍである。このように窒素濃度を２００
ｐｐｍ以上に調整することによって、リチウムアルミニ
ウム合金テープの伸び率が低減するので、打抜きや切断
時においてラインに掛けられる際に伸びが生じ、厚みが
変わり規格外になったりすることはなくなる。窒素濃度
が２００ｐｐｍ未満の場合は打抜きや切断等のラインに
てテンション（張力）がかけられた際、伸びが生じるこ
とがあり、上記したような効果は得られない。窒素濃度
の上限は特に限定されないが、電池性能に影響を与えな
い窒素濃度とすることが肝要であり、この観点から５０
０ｐｐｍ以下、さらには３００ｐｐｍ以下が望ましい。The nitrogen concentration in the lithium aluminum alloy ingot or the tape of the present invention is 200 ppm or more, preferably 200 to 500 ppm, more preferably 20 ppm.
0 to 300 ppm. Thus, when the nitrogen concentration is 200
By adjusting the content to ppm or more, the elongation rate of the lithium-aluminum alloy tape is reduced, so that elongation occurs when the tape is hung on a line at the time of punching or cutting, so that the thickness does not change and the thickness does not become out of specification. If the nitrogen concentration is less than 200 ppm, elongation may occur when tension is applied in a line such as punching or cutting, and the above-described effects cannot be obtained. Although the upper limit of the nitrogen concentration is not particularly limited, it is important that the nitrogen concentration does not affect the battery performance.
0 ppm or less, further preferably 300 ppm or less is desirable.
【０００９】また、本発明のリチウムアルミニウム合金
インゴットまたはテープ中のアルミニウム濃度は９００
ｐｐｍ以上、好ましくは９００〜１２００ｐｐｍであ
る。アルミニウム濃度が９００ｐｐｍ未満の場合には、
打抜きや切断等のラインにてテンション（張力）がかけ
られた際に伸びが生じる。The aluminum concentration in the lithium aluminum alloy ingot or tape of the present invention is 900
ppm or more, preferably 900 to 1200 ppm. When the aluminum concentration is less than 900 ppm,
Elongation occurs when tension is applied in a line such as punching or cutting.
【００１０】このように窒素濃度を２００ｐｐｍ以上に
調整し、かつアルミニウム濃度を９００ｐｐｍ以上にす
ることにより、窒素とアルミニウムに相互作用が生じ、
リチウムアルミニウム合金テープの伸び率を減少させる
ので、打抜きや切断時においてラインに掛けられる際に
伸びが生じ、厚みが変わり規格外になったりすることは
なくなる。By adjusting the nitrogen concentration to 200 ppm or more and the aluminum concentration to 900 ppm or more, the interaction between nitrogen and aluminum occurs,
Since the elongation rate of the lithium aluminum alloy tape is reduced, elongation occurs when the tape is hung on a line at the time of punching or cutting, so that the thickness does not change and the thickness does not exceed the standard.
【００１１】そして、上述のように、窒素濃度が２００
ｐｐｍ以上、アルミニウム濃度が９００ｐｐｍ以上のい
ずれか一方だけの条件しか満たしていない場合は、この
ような相互作用は得られず、打抜きや切断等のラインに
てテンション（張力）がかけられた際に伸びが生じるこ
とがあり、このような効果は得られない。As described above, the nitrogen concentration is 200
When only one of the conditions of at least ppm and at least 900 ppm of aluminum is satisfied, such an interaction cannot be obtained, and when tension is applied in a line such as punching or cutting. Elongation may occur, and such an effect cannot be obtained.
【００１２】本発明のリチウムアルミニウム合金テープ
は、リチウムアルミニウム合金ブロックを押し出し加工
することにより得られるが、このようなリチウムアルミ
ニウム合金ブロックの製造方法は、次の通りである。The lithium aluminum alloy tape of the present invention can be obtained by extruding a lithium aluminum alloy block. A method for manufacturing such a lithium aluminum alloy block is as follows.
【００１３】すなわち、本発明の有機電解質電池負極用
リチウムアルミニウム合金の製造方法は、窒素濃度１〜
２００ｐｐｍ未満のリチウムアルミニウム合金と窒素濃
度２００ｐｐｍ以上のリチウムアルミニウム合金を加熱
溶解、混合後、鋳造して得られたインゴットの不要部分
を切削し、窒素濃度２００〜５００ｐｐｍ、アルミニウ
ム濃度９００〜１２００ｐｐｍのインゴットを得ること
を特徴とする。That is, the method for producing a lithium aluminum alloy for an anode of an organic electrolyte battery according to the present invention comprises the steps of:
After heating and melting a lithium aluminum alloy having a nitrogen concentration of less than 200 ppm and a lithium aluminum alloy having a nitrogen concentration of 200 ppm or more and mixing, unnecessary portions of an ingot obtained by casting are cut, and a nitrogen concentration of 200 to 500 ppm and an aluminum concentration of 900 to 1200 ppm are obtained. It is characterized by obtaining an ingot.
【００１４】このように本発明では、低窒素含有リチウ
ムアルミニウム合金インゴット、具体的には窒素濃度１
〜２００ｐｐｍ未満のリチウムアルミニウム合金インゴ
ットと高窒素含有リチウムアルミニウム合金インゴッ
ト、具体的には窒素濃度２００ｐｐｍ以上のリチウムア
ルミニウム合金インゴットをそれぞれ調製し、これらの
リチウムアルミニウム合金インゴットの所定量を加熱溶
解、混合した後、鋳造によってインゴットを作製する。
そして、このインゴットの不要部分を切削し、本発明の
窒素濃度２００ｐｐｍ以上、かつアルミニウム濃度９０
０ｐｐｍ以上のリチウムアルミニウム合金インゴットを
得るものである。As described above, in the present invention, a low nitrogen-containing lithium aluminum alloy ingot, specifically, a nitrogen concentration of 1
A lithium aluminum alloy ingot of less than ~ 200 ppm and a high nitrogen-containing lithium aluminum alloy ingot, specifically a lithium aluminum alloy ingot having a nitrogen concentration of 200 ppm or more were prepared, and a predetermined amount of these lithium aluminum alloy ingots were heated and melted and mixed. Then, an ingot is produced by casting.
Unnecessary portions of the ingot were cut off, and the nitrogen concentration of the present invention was 200 ppm or more and the aluminum concentration was 90 ppm.
The purpose is to obtain a lithium aluminum alloy ingot of 0 ppm or more.
【００１５】この高窒素含有リチウムアルミニウム合金
インゴットは、リチウムアルミニウム合金を加熱溶解さ
せ、窒素ガスを吹き込みながら鋳造することにより得ら
れる。The high nitrogen-containing lithium aluminum alloy ingot can be obtained by heating and melting a lithium aluminum alloy and casting it while blowing nitrogen gas.
【００１６】[0016]
【実施例】以下、実施例等に基づき本発明を具体的に説
明する。The present invention will be specifically described below based on examples and the like.
【００１７】実施例１ （リチウムアルミニウム合金インゴットの製造）リチウ
ムアルミニウム合金（アルミニウム濃度１０００ｐｐ
ｍ）３００ｇを２２０℃に加熱溶解させ、２００リット
ル／ｍｉｎにて窒素ガスを約４０分間吹き込みながらイ
ンゴットを鋳造した。得られたインゴットを分析すると
窒素濃度は２０９０ｐｐｍであり、高窒素含有リチウム
アルミニウム合金インゴツトが得られた。 Example 1 (Production of lithium aluminum alloy ingot) Lithium aluminum alloy (aluminum concentration: 1000 pp)
m) 300 g was heated and melted at 220 ° C., and an ingot was cast while blowing nitrogen gas at 200 liter / min for about 40 minutes. When the obtained ingot was analyzed, the nitrogen concentration was 2,090 ppm, and a high nitrogen-containing lithium aluminum alloy ingot was obtained.
【００１８】次に、この高窒素含有リチウムアルミニウ
ム合金インゴツト（窒素濃度２０９０ｐｐｍ、アルミニ
ウム濃度１０００ｐｐｍ）６１０ｇと、予め調製した低
窒素含有リチウムアルミニウム合金インゴット（窒素濃
度３０ｐｐｍ、アルミニウム濃度１０００ｐｐｍ）２１
５ｇとを所定容器に投入し、２２０℃まで加熱溶解、混
合した後、鋳造によってリチウムアルミニウム合金イン
ゴットを得た。Next, 610 g of this high nitrogen-containing lithium aluminum alloy ingot (nitrogen concentration 2090 ppm, aluminum concentration 1000 ppm) and a previously prepared low nitrogen content lithium aluminum alloy ingot (nitrogen concentration 30 ppm, aluminum concentration 1000 ppm) 21
5 g was put into a predetermined container, heated and melted to 220 ° C., mixed, and then cast to obtain a lithium aluminum alloy ingot.
【００１９】このようにして得られたリチウムアルミニ
ウム合金インゴットを上から５等分して窒素濃度を分析
すると、上から１７７ｐｐｍ、２１０ｐｐｍ、２
４７ｐｐｍ、２７９ｐｐｍ、５７３ｐｐｍであり、
上部（）と下部（）をカットすることにより、窒素
濃度の最も好ましい範囲である２００〜３００ｐｐｍの
リチウムアルミニウム合金インゴッドが得られることが
判った。The lithium aluminum alloy ingot obtained in this manner was divided into five equal parts from the top and analyzed for nitrogen concentration.
47 ppm, 279 ppm, 573 ppm,
It was found that by cutting the upper part () and the lower part (), a lithium aluminum alloy ingot of 200 to 300 ppm, which is the most preferable range of the nitrogen concentration, can be obtained.
【００２０】実施例２〜４および比較例１〜２ （リチウムアルミニウム合金テープの調製）実施例１と
同様の方法によって得られた窒素濃度１０ｐｐｍ、アル
ミニウム濃度１０００ｐｐｍのアルミニウムリチウム合
金インゴットを厚み０．２ｍｍ、幅２３ｍｍ程度に押し
出し加工を行なってテープ化した（比較例１）。 Examples 2 to 4 and Comparative Examples 1 and 2 (Preparation of lithium aluminum alloy tape) An aluminum lithium alloy ingot having a nitrogen concentration of 10 ppm and an aluminum concentration of 1000 ppm obtained by the same method as in Example 1 was 0.2 mm thick. And extruded into a tape having a width of about 23 mm (Comparative Example 1).
【００２１】上記と同様にして得られた窒素濃度１００
ｐｐｍ、２００ｐｐｍ、３００ｐｐｍ、５００ｐｐｍ
で、アルミニウム濃度１０００ｐｐｍのアルミニウムリ
チウム合金インゴットをそれぞれ押し出し加工を行なっ
てテープ化した（比較例２および実施例２〜４）。この
アルミニウム濃度１０００ｐｐｍの各アルミニウムリチ
ウム合金テープのThe nitrogen concentration of 100 obtained in the same manner as above
ppm, 200ppm, 300ppm, 500ppm
Then, an aluminum lithium alloy ingot having an aluminum concentration of 1000 ppm was extruded into tapes (Comparative Example 2 and Examples 2 to 4). This aluminum lithium alloy tape having an aluminum concentration of 1000 ppm
【００２２】伸び率を評価した。測定は、バネ秤で５１
７ｇの一定荷重を掛け、秒当りの伸び率を測定した。各
窒素濃度の時間当りの伸び率を図１に示す。また、１２
０秒、３００秒の際の窒素濃度と伸び率の関係を図２に
示す。The elongation was evaluated. The measurement was performed using a spring balance.
A constant load of 7 g was applied, and the elongation rate per second was measured. FIG. 1 shows the elongation rate of each nitrogen concentration per hour. Also, 12
FIG. 2 shows the relationship between the nitrogen concentration and the elongation at 0 and 300 seconds.
【００２３】この図１〜２から、窒素濃度と伸び率に相
関があり、窒素濃度が上がると伸び率が低下することが
分かる。From FIGS. 1 and 2, it can be seen that there is a correlation between the nitrogen concentration and the elongation, and that the elongation decreases as the nitrogen concentration increases.
【００２４】[0024]
【発明の効果】以上説明したように、本発明のリチウム
アルミニウム合金テープは、伸び率が低減されているの
で、打抜きや切断時においてラインに掛けられる際に伸
びが生じ、厚みが変わり規格外になったりすることがな
くなる。As described above, since the lithium aluminum alloy tape of the present invention has a reduced elongation, the tape is stretched when it is hung on a line at the time of punching or cutting, and its thickness changes to a value outside the specification. No more.
【図１】 各窒素濃度の時間当りの伸び率を示すグラ
フ。FIG. 1 is a graph showing an elongation rate per hour of each nitrogen concentration.
【図２】 窒素濃度と伸び率の関係を示すグラフ。FIG. 2 is a graph showing the relationship between nitrogen concentration and elongation.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−232661（ＪＰ，Ａ) 特開 平１−184295（ＪＰ，Ａ) 特開 昭59−228360（ＪＰ，Ａ) 特開 昭60−165330（ＪＰ，Ａ) 特開 昭64−39333（ＪＰ，Ａ) 特開 平７−80627（ＪＰ，Ａ) 特開 平４−136145（ＪＰ，Ａ) 特開 平４−128352（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 1/02 - 1/03 C22C 24/00 H01M 4/00 - 4/40 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-232661 (JP, A) JP-A-1-184295 (JP, A) JP-A-59-228360 (JP, A) JP-A-60-1985 165330 (JP, A) JP-A-64-39333 (JP, A) JP-A-7-80627 (JP, A) JP-A-4-136145 (JP, A) JP-A-4-128352 (JP, A) (58) Field surveyed (Int.Cl. 7 , DB name) C22C 1/02-1/03 C22C 24/00 H01M 4/00-4/40
Claims (2)
ミニウム濃度が９００〜１２００ｐｐｍで残部がリチウ
ムからなることを特徴とする有機電解質電池負極用リチ
ウムアルミニウム合金。A nitrogen concentration of 200 to 500 ppm, an aluminum concentration of 900 to 1200 ppm and a balance of lithium
A lithium aluminum alloy for a negative electrode of an organic electrolyte battery, comprising:
ムアルミニウム合金と窒素濃度２００ｐｐｍ以上のリチ
ウムアルミニウム合金を加熱溶解、混合後、鋳造して得
られたインゴットの不要部分を切削し、窒素濃度２００
〜５００ｐｐｍ、アルミニウム濃度９００〜１２００ｐ
ｐｍのインゴットを得ることを特徴とする有機電解質電
池負極用リチウムアルミニウム合金の製造方法。2. An unnecessary part of an ingot obtained by casting and melting a lithium aluminum alloy having a nitrogen concentration of less than 1 to 200 ppm and a lithium aluminum alloy having a nitrogen concentration of 200 ppm or more by heating and mixing, and cutting the nitrogen concentration to a nitrogen concentration of 200 ppm.
~ 500 ppm, aluminum concentration 900 ~ 1200 p
pm ingot to obtain an organic electrolyte
A method for producing a lithium aluminum alloy for a negative electrode of a pond .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04995494A JP3349247B2 (en) | 1993-05-11 | 1994-02-24 | Lithium aluminum alloy for negative electrode of organic electrolyte battery and method for producing the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-132529 | 1993-05-11 | ||
| JP13252993 | 1993-05-11 | ||
| JP04995494A JP3349247B2 (en) | 1993-05-11 | 1994-02-24 | Lithium aluminum alloy for negative electrode of organic electrolyte battery and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0726343A JPH0726343A (en) | 1995-01-27 |
| JP3349247B2 true JP3349247B2 (en) | 2002-11-20 |
Family
ID=26390388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04995494A Expired - Lifetime JP3349247B2 (en) | 1993-05-11 | 1994-02-24 | Lithium aluminum alloy for negative electrode of organic electrolyte battery and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3349247B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11217788B2 (en) * | 2019-04-16 | 2022-01-04 | Board Of Trustees Of Northern Illinois University | Doped lithium anode, battery having a doped lithium anode, and methods of use thereof |
-
1994
- 1994-02-24 JP JP04995494A patent/JP3349247B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726343A (en) | 1995-01-27 |
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